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Nik Raihan Nik Yusoff, is a senior lecturer at the Department of Sustainable and Natural Resources, Faculty of Earth Science, Universiti Malaysia Kelantan (UMK). She obtained her PhD from Brunel University, London in the field of water and waste water treatment. She is currently involved in promoting plant waste for the activated carbon production in removing pollutant from textile waste. She is also passionate in photocatalytic degradation of pesticide. She is also currently participating in national innovation exhibitions and won several medals such as “Best Women Inventor Award”, Gold, Silver and Bronze medal. She also used to be involved at the administration level as she was appointed as a Deputy Dean for Research and Innovation due to her leadership skills. She is also a registered chemist with the Malaysian Institute of Chemistry (IKM) since 2018.
The contamination of water by heavy metals is a worldwide environmental problem. Phytoremediation and constructed wetlands have become increasingly popular as more sustainable and environmentally friendly techniques of removing heavy metals from the wastewater. This study, therefore, investigated the phytoremediation of nickel by Alocasia puber (A. puber) in a constructed wetlands (CW) microcosm. This study identified the optimum conditions for nickel (Ni) removal from wastewater using response surface methodology (RSM) with central composite design (CCD). Two operational variables were assessed: exposure time and initial Ni concentration. The optimum conditions for the maximum removal of Ni from water were an exposure time of 10 days and 99.76 mg/L initial Ni concentration. The results indicated that 95.6% removal was achieved under the optimized conditions, with a high correlation coefficient (R2 = 0.97) between the statistical model and the experimental data. Field emission scanning electron microscopy images showed anatomical changes in the A. puber samples due to Ni exposure, and transmission electron microscopy images revealed some internal damages in the A. puber, but visual Ni toxicity symptoms, such as necrosis and chlorosis, were not observed in the A. puber. This study demonstrated that A. puber planted in a constructed wetland microcosm was able to remediate wastewater contaminated with Ni.
Najaa Syuhada Mohamad Thani; Rozidaini Mohd Ghazi; Ikarastika Rahayu Abdul Wahab; Mohamad Faiz Mohd Amin; Zulhazman Hamzah; Nik Raihan Nik Yusoff. Optimization of Phytoremediation of Nickel by Alocasia puber Using Response Surface Methodology. Water 2020, 12, 2707 .
AMA StyleNajaa Syuhada Mohamad Thani, Rozidaini Mohd Ghazi, Ikarastika Rahayu Abdul Wahab, Mohamad Faiz Mohd Amin, Zulhazman Hamzah, Nik Raihan Nik Yusoff. Optimization of Phytoremediation of Nickel by Alocasia puber Using Response Surface Methodology. Water. 2020; 12 (10):2707.
Chicago/Turabian StyleNajaa Syuhada Mohamad Thani; Rozidaini Mohd Ghazi; Ikarastika Rahayu Abdul Wahab; Mohamad Faiz Mohd Amin; Zulhazman Hamzah; Nik Raihan Nik Yusoff. 2020. "Optimization of Phytoremediation of Nickel by Alocasia puber Using Response Surface Methodology." Water 12, no. 10: 2707.
This study investigated the effect of activating agent on activated carbon preparation and potential chemical oxygen demand (COD) reduction using activated carbons (AC) prepared. Zinc chloride, phosphoric acid and potassium hydroxide were utilized in impregnation of bamboo and rice husk. Result of SEM-EDX, FTIR as well as COD reduction were compared and discussed. The SEM displayed highest porosity in AC using KOH activation. FTIR analysis displayed obvious difference for each activation. AC using KOH activation obtained highest COD reduction.
Mohd Zazmiezi Mohd Alias; Rozidaini Mohd Ghazi; Nik Raihan Nik Yusoff; Mohd Hafiz Jamaludin. Effect of Activation Agents on COD Reduction Using Activated Carbon from Agricultural Residue. Materials Science Forum 2020, 1010, 453 -458.
AMA StyleMohd Zazmiezi Mohd Alias, Rozidaini Mohd Ghazi, Nik Raihan Nik Yusoff, Mohd Hafiz Jamaludin. Effect of Activation Agents on COD Reduction Using Activated Carbon from Agricultural Residue. Materials Science Forum. 2020; 1010 ():453-458.
Chicago/Turabian StyleMohd Zazmiezi Mohd Alias; Rozidaini Mohd Ghazi; Nik Raihan Nik Yusoff; Mohd Hafiz Jamaludin. 2020. "Effect of Activation Agents on COD Reduction Using Activated Carbon from Agricultural Residue." Materials Science Forum 1010, no. : 453-458.
Lignocellulosic materials are generally considered hydrophilic due to the high density of hydroxyl groups. The use of lignocellulosic materials in hydrophobic systems thus require surface modification. Therefore, in this study, cellulose (MCC) and sawdust (SD) have been pretreated with ionic liquid, 1-butyl-3-methylimidazolium chloride (BMIMCl) prior to surface modification with cationic surfactant, hexadecyl trimethylammonium bromide (CTAB). The effect of BMIMCl pretreatment prior to surface modification has been investigated. Crystallinity, functional group changes, morphology and thermal stability of the sawdust and cellulose upon BMIMCl pretreatment and surface modification have been studied using x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and thermogravimetric Analysis (TGA). XRD results showed that the structure of lignocellulosic materials became more amorphous upon pretreatment with BMIMCl. FTIR results indicated that the modification of lignocellulosic is more efficient in BMIMCl-pretreated samples. Percentage of decomposition is higher for the BMIMCl-pretreated and CTAB modified samples.
Asanah Radhi; Abdullah Othman; Muhammad Afif Aziz; Nik Raihan Nik Yusoff. Surface Modification of 1-Butyl-3-Methylimidazolium Chloride -Treated Lignocellulosic Materials. Materials Science Forum 2020, 1010, 526 -531.
AMA StyleAsanah Radhi, Abdullah Othman, Muhammad Afif Aziz, Nik Raihan Nik Yusoff. Surface Modification of 1-Butyl-3-Methylimidazolium Chloride -Treated Lignocellulosic Materials. Materials Science Forum. 2020; 1010 ():526-531.
Chicago/Turabian StyleAsanah Radhi; Abdullah Othman; Muhammad Afif Aziz; Nik Raihan Nik Yusoff. 2020. "Surface Modification of 1-Butyl-3-Methylimidazolium Chloride -Treated Lignocellulosic Materials." Materials Science Forum 1010, no. : 526-531.
Textile industry is commonly use dyes in colouring process which become the major dye wastewater source that leads to serious pollution in the environment. The disposed dyes can lead to serious harm to the water users and life in the aquatic because of the dye properties. Hence, the dye adsorption by activated carbon prepared from foxtail palm fruit was studied. The objectives of this study were: 1) to prepare activated carbon from foxtail fruit palm and 2) to study the effect of contact time, adsorbent dosage and initial concentration of dye usage toward the efficiency of the prepared activated carbon. Nitric acid was used as activating agent in this experiment, with impregnation time of overnight and 500 °C of 2.5 hours carbonization. The adsorption capability of foxtail fruit palm activated carbon as activated carbon was determined with the use of a dye called methylene blue. The results showed that 5 g of activated carbon was used to reduce 97.1% of 2 mg/L methylene blue with 150 minutes contact time. This result aligns with the SEM result which indicated that the produce activated carbon is rich with well-developed and irregular size of pores ranging between 1.585 μm to 7.556 μm. This study indicates that activated carbon from foxtail palm fruits could be utilized as an alternative activated carbon to treat dye wastewater.
Nik Raihan Nik Yusoff; Syafiqa Jauna Mohamed Jefry; Yin Teng Lai; Nurul Syazana Abdul Halim; Noor Syuhadah Subki. Methylene Blue Removal Using Foxtail Palm Fruits as Potential Activated Carbon. Materials Science Forum 2020, 1010, 477 -482.
AMA StyleNik Raihan Nik Yusoff, Syafiqa Jauna Mohamed Jefry, Yin Teng Lai, Nurul Syazana Abdul Halim, Noor Syuhadah Subki. Methylene Blue Removal Using Foxtail Palm Fruits as Potential Activated Carbon. Materials Science Forum. 2020; 1010 ():477-482.
Chicago/Turabian StyleNik Raihan Nik Yusoff; Syafiqa Jauna Mohamed Jefry; Yin Teng Lai; Nurul Syazana Abdul Halim; Noor Syuhadah Subki. 2020. "Methylene Blue Removal Using Foxtail Palm Fruits as Potential Activated Carbon." Materials Science Forum 1010, no. : 477-482.
In this study, the photocatalytic activity of the prepared TiO2/Al2O3/G nanocomposite photocatalyst was evaluated by applying the photocatalyst for photocatalytic degradation of metamifop, an active ingredient in commercial herbicide, Nominee®-M. The result indicated that X-Ray Diffraction (XRD) result of the prepared photocatalyst showed that TiO2 was in anatase crystalline state and Fourier Transform infrared (FTIR) spectra confirmed the presence of hydroxyl group observed in the range 3291 to 3378 cm−1 attributed to the OH vibrations of an adsorbed water molecule (OH stretching-Al-OH). The highest photocatalytic degradation of 5 mg/L metamifop was 97.8% using 20 mg of TiO2/Al2O3/G nanocomposite photocatalyst assisted with 2 L/min of air flow rate. The prepared photocatalyst was significantly potential to be applied for the photocatalytic degradation of metamifop.
Nik Raihan Nik Yusoff; Chok Yun Peng; Mahani Yusoff; Siti Nur Huda Mohd Nor. Photocatalytic degradation of metamifop using TiO2/Al2O3/G nanocomposite. AIP Conference Proceedings 2019, 2068, 020034 .
AMA StyleNik Raihan Nik Yusoff, Chok Yun Peng, Mahani Yusoff, Siti Nur Huda Mohd Nor. Photocatalytic degradation of metamifop using TiO2/Al2O3/G nanocomposite. AIP Conference Proceedings. 2019; 2068 (1):020034.
Chicago/Turabian StyleNik Raihan Nik Yusoff; Chok Yun Peng; Mahani Yusoff; Siti Nur Huda Mohd Nor. 2019. "Photocatalytic degradation of metamifop using TiO2/Al2O3/G nanocomposite." AIP Conference Proceedings 2068, no. 1: 020034.
Limited success for Aedes control program has impelled the necessities for new insecticide search. Hence, alternative plant compounds may be competent to overcome the pesticide resistance problem and to lead a chemical-free environment. Following go-green conceptions, larvicidal effects of the Azolla pinnata extracts using methanol and acetone solvent against Aedes albopictus late 3rd instar larvae were evaluated. The A. pinnata fresh plant from Kuala Krai, Kelantan, Malaysia (5° 31′ N 102° 12′ E) was used for crude extraction with Soxhlet apparatus using methanol and acetone solvents. Next, larvicidal test following WHO guidelines was tested against late 3rd instar to early 4th instar larvae of Ae. albopictus mosquitoes. Meanwhile, the chemical composition of extracts and their structures have been identified using GCMS-QP2010 Ultra (Shimadzu) fitted with Rtx-5MS capillary column (30 m × 0.25 mm inner diameter, ×0.25 μm film thickness; maximum temperature, 370°C), coupled to QP2010 Ultra (Shimadzu) MS. Results of methanol solvent showed the highest larvicidal activity against late 3rd instar to early 4th instar Ae. albopictus larvae with LC50 and LC95 values of 867 ppm and 1293 ppm at 24 hours, respectively, and 647 ppm and 972 ppm at 48 hours, respectively. Meanwhile, acetone solvent compounds were recorded with LC50 and LC95 values of 1072 ppm and 1302 ppm at 24 hours, respectively, and 904 ppm and 1126 ppm at 48 hours, respectively. Finally, the chemical composition of A. pinnata plant extracts has been characterized for 35 active compounds from methanol solvent and 37 active compounds with acetone solvent. In conclusion, A. pinnata plant bioactive molecules are efficient and could be developed as an eco-friendly, “go-green” approach for mosquitoes' larvicidal control programs. Thus, our study suggests that future research can be conducted on A. pinnata bioactive ingredients against Ae. albopictus larvae in small-scale field trials as botanical insecticide for environmentally friendly approach.
Rajiv Ravi; Nor Shaida Husna Zulkrnin; Nurul Nadiah Rozhan; Nik Raihan Nik Yusoff; Mohd Sukhairi Mat Rasat; Muhammad Iqbal Ahmad; Zulhazman Hamzah; Intan H. Ishak; Mohamad Faiz Mohd Amin. Evaluation of Two Different Solvents for Azolla pinnata Extracts on Chemical Compositions and Larvicidal Activity against Aedes albopictus (Diptera: Culicidae). Journal of Chemistry 2018, 2018, 1 -8.
AMA StyleRajiv Ravi, Nor Shaida Husna Zulkrnin, Nurul Nadiah Rozhan, Nik Raihan Nik Yusoff, Mohd Sukhairi Mat Rasat, Muhammad Iqbal Ahmad, Zulhazman Hamzah, Intan H. Ishak, Mohamad Faiz Mohd Amin. Evaluation of Two Different Solvents for Azolla pinnata Extracts on Chemical Compositions and Larvicidal Activity against Aedes albopictus (Diptera: Culicidae). Journal of Chemistry. 2018; 2018 ():1-8.
Chicago/Turabian StyleRajiv Ravi; Nor Shaida Husna Zulkrnin; Nurul Nadiah Rozhan; Nik Raihan Nik Yusoff; Mohd Sukhairi Mat Rasat; Muhammad Iqbal Ahmad; Zulhazman Hamzah; Intan H. Ishak; Mohamad Faiz Mohd Amin. 2018. "Evaluation of Two Different Solvents for Azolla pinnata Extracts on Chemical Compositions and Larvicidal Activity against Aedes albopictus (Diptera: Culicidae)." Journal of Chemistry 2018, no. : 1-8.
The resistance problem of dengue vectors to different classes of insecticides that are used for public health has raised concerns about vector control programmes. Hence, the discovery of alternative compounds that would enhance existing tools is important for overcoming the resistance problem of using insecticides in vectors and ensuring a chemical-free environment. The larvicidal effects of Azolla pinnata extracts by using two different extraction methods with methanol solvent against Aedes in early 4th instar larvae was conducted. The fresh Azolla pinnata plant from Kuala Krai, Kelantan, Malaysia was used for crude extraction using Soxhlet and maceration methods. Then, the chemical composition of extracts and its structure were identified using GCMS-QP2010 Ultra (Shimadzu). Next, following the WHO procedures for larval bioassays, the extracts were used to evaluate the early 4th instar larvae of Aedes mosquito vectors. The larvicidal activity of Azolla pinnata plant extracts evidently affected the early 4th instar larvae of Aedes aegypti mosquito vectors. The Soxhlet extraction method had the highest larvicidal effect against Ae. aegypti early 4th instar larvae, with LC50 and LC95 values of 1093 and 1343 mg/L, respectively. Meanwhile, the maceration extraction compounds were recorded with the LC50 and LC95 values of 1280 and 1520 mg/L, respectively. The larvae bioassay test for Ae. albopictus showed closely similar values in its Soxhlet extraction, with LC50 and LC95 values of 1035 and 1524 mg/L, compared with the maceration extraction LC50 and LC95 values of 1037 and 1579 mg/L, respectively. The non-target organism test on guppy fish, Poecilia reticulata, showed no mortalities and posed no toxic effects. The chemical composition of the Azolla pinnata plant extract has been found and characterized as having 18 active compounds for the Soxhlet method and 15 active compounds for the maceration method. Our findings showed that the crude extract of A. pinnata bioactive molecules are effective and have the potential to be developed as biolarvicides for Aedes mosquito vector control. This study recommends future research on the use of active ingredients isolated from A. pinnata extracts and their evaluation against larvicidal activity of Aedes in small-scale field trials for environmentally safe botanical insecticide invention.
Rajiv Ravi; Nor Shaida Husna Zulkrnin; Nurul Nadiah Rozhan; Nik Raihan Nik Yusoff; Mohd Sukhairi Mat Rasat; Muhammad Iqbal Ahmad; Intan H. Ishak; Mohamad Faiz Mohd Amin. Chemical composition and larvicidal activities of Azolla pinnata extracts against Aedes (Diptera:Culicidae). PLOS ONE 2018, 13, e0206982 .
AMA StyleRajiv Ravi, Nor Shaida Husna Zulkrnin, Nurul Nadiah Rozhan, Nik Raihan Nik Yusoff, Mohd Sukhairi Mat Rasat, Muhammad Iqbal Ahmad, Intan H. Ishak, Mohamad Faiz Mohd Amin. Chemical composition and larvicidal activities of Azolla pinnata extracts against Aedes (Diptera:Culicidae). PLOS ONE. 2018; 13 (11):e0206982.
Chicago/Turabian StyleRajiv Ravi; Nor Shaida Husna Zulkrnin; Nurul Nadiah Rozhan; Nik Raihan Nik Yusoff; Mohd Sukhairi Mat Rasat; Muhammad Iqbal Ahmad; Intan H. Ishak; Mohamad Faiz Mohd Amin. 2018. "Chemical composition and larvicidal activities of Azolla pinnata extracts against Aedes (Diptera:Culicidae)." PLOS ONE 13, no. 11: e0206982.
In this study, Al2O3-graphene nanoplatelets (GNP) nanocomposite was evaluated on its properties and performance towards methyl orange (MO) dye. Al2O3-GNP nanocomposite was prepared by conventional hydrothermal at 200°C for 24 h. The result showed the crystallite size of Al2O3 is decreased and internal strain increased with the increased GNP content. The particle size of nanocomposite becomes larger with the increment GNP amount in the nanocomposite. Nanocomposite with lower graphene contents (20 wt%) and higher Al2O3 contents performed (80 wt%) the optimum for the MO absorption with efficiency of 75% in visible light.
Nur Farihah Mohamad Isa; Nik Raihan Nik Yusoff; Mohd Hasmizam Razali; Mahani Yusoff. Photocatalytic activity of hydrothermally synthesized Al2O3graphene nanocomposite. IOP Conference Series: Materials Science and Engineering 2018, 440, 012017 .
AMA StyleNur Farihah Mohamad Isa, Nik Raihan Nik Yusoff, Mohd Hasmizam Razali, Mahani Yusoff. Photocatalytic activity of hydrothermally synthesized Al2O3graphene nanocomposite. IOP Conference Series: Materials Science and Engineering. 2018; 440 (1):012017.
Chicago/Turabian StyleNur Farihah Mohamad Isa; Nik Raihan Nik Yusoff; Mohd Hasmizam Razali; Mahani Yusoff. 2018. "Photocatalytic activity of hydrothermally synthesized Al2O3graphene nanocomposite." IOP Conference Series: Materials Science and Engineering 440, no. 1: 012017.
Dengue is vector-borne diseases with 390 million infections per year extending over 120 countries of the world. Aedes aegypti (L.) (Diptera: Culicidae) is a primary vector for dengue viral infections for humans. Current focus on application of natural product against mosquito vectors has been the main priority for research due to its eco-safety. The extensive use of chemical insecticides has led to severe health problems, environmental pollution, toxic hazards to human and nontarget species, and development of insecticide resistance on mosquitoes. Azolla pinnata is an aquatic fern and predominantly used as feed in poultry industry and as fertilizer in agricultural field for enhancing the fertility of rice paddy soil. The present study was conducted to explore the larvicidal efficacy of A. pinnata using fresh and powdered form against late third-stage larvae (6 days, 5 mm in larvae body length) of Ae. aegypti (L.) (Diptera: Culicidae). The larvicidal bioassays were performed using World Health Organization standard larval susceptibility test method for different concentration for powdered and fresh A. pinnata. Powdered A. pinnata concentration used during larvicidal bioassay ranges from 500ppm to 2000ppm; meanwhile, fresh A. pinnata ranges from 500ppm to 9,000,000 ppm. The highest mortality was at 1853 ppm for powdered A. pinnata compared with fresh A. pinnata at 2,521,535 ppm, while the LC50 for both powdered and fresh A. pinnata recorded at 1262 ppm and 1853 ppm, respectively. Finally, the analysis of variance (ANOVA) showed significant difference on Ae. aegypti larval mortality (F=30.439, df=1, p≤0.001) and concentration (F=20.002, df=1, p≤0.001) compared to powdered and fresh A. pinnata at 24-hour bioassay test. In conclusion, the powdered A. pinnata serves as a good larvicidal agent against Ae. aegypti (L.) (Diptera: Culicidae) and this study provided information on the lethal concentration that may have potential for a more eco-friendly Aedes mosquito control program.
Nor Shaida Husna Zulkrnin; Nurul Nadiah Rozhan; Nur Amanina Zulkfili; Nik Raihan Nik Yusoff; Mohd Sukhairi Mat Rasat; Nor Hakimin Abdullah; Muhammad Iqbal Ahmad; Rajiv Ravi; Intan H. Ishak; Mohamad Faiz Mohd Amin. Larvicidal Effectiveness of Azolla pinnata against Aedes aegypti (Diptera: Culicidae) with Its Effects on Larval Morphology and Visualization of Behavioural Response. Journal of Parasitology Research 2018, 2018, 1 -5.
AMA StyleNor Shaida Husna Zulkrnin, Nurul Nadiah Rozhan, Nur Amanina Zulkfili, Nik Raihan Nik Yusoff, Mohd Sukhairi Mat Rasat, Nor Hakimin Abdullah, Muhammad Iqbal Ahmad, Rajiv Ravi, Intan H. Ishak, Mohamad Faiz Mohd Amin. Larvicidal Effectiveness of Azolla pinnata against Aedes aegypti (Diptera: Culicidae) with Its Effects on Larval Morphology and Visualization of Behavioural Response. Journal of Parasitology Research. 2018; 2018 ():1-5.
Chicago/Turabian StyleNor Shaida Husna Zulkrnin; Nurul Nadiah Rozhan; Nur Amanina Zulkfili; Nik Raihan Nik Yusoff; Mohd Sukhairi Mat Rasat; Nor Hakimin Abdullah; Muhammad Iqbal Ahmad; Rajiv Ravi; Intan H. Ishak; Mohamad Faiz Mohd Amin. 2018. "Larvicidal Effectiveness of Azolla pinnata against Aedes aegypti (Diptera: Culicidae) with Its Effects on Larval Morphology and Visualization of Behavioural Response." Journal of Parasitology Research 2018, no. : 1-5.
Irshad Ul Haq Bhat; Mohamad Nur Khairul Anwar; Nik Raihan Binti Nik Yusoff; Aweng A/l Eh Rak. Palladium catalyst for treatment of inorganic and organic pollutants in wastewater: a short review. Desalination and Water Treatment 2018, 131, 132 -140.
AMA StyleIrshad Ul Haq Bhat, Mohamad Nur Khairul Anwar, Nik Raihan Binti Nik Yusoff, Aweng A/l Eh Rak. Palladium catalyst for treatment of inorganic and organic pollutants in wastewater: a short review. Desalination and Water Treatment. 2018; 131 ():132-140.
Chicago/Turabian StyleIrshad Ul Haq Bhat; Mohamad Nur Khairul Anwar; Nik Raihan Binti Nik Yusoff; Aweng A/l Eh Rak. 2018. "Palladium catalyst for treatment of inorganic and organic pollutants in wastewater: a short review." Desalination and Water Treatment 131, no. : 132-140.
Mechanochemical process was conducted to synthesis a series of metal oxide doped biomass carbon source followed by carbothermal reduction which obtained via the reaction between activated carbon (AC) and CuO precursor. Microstructure of single AC and CuO-doped activated carbon was conducted using Field Emission Scanning Electron Microscopy (FESEM). Thermal behavior was studied using thermogravimetric analyser and Differential Scanning Calorimetry (TGA and DSC) and crystallinity phase was analysed using X-ray diffraction (XRD). The results indicated that mechanochemical process and carbothermal reduction to synthesis CuO-doped AC have a significant effect in term of surface morphology, thermal decomposition and crystallinity. A significant difference of the surface morphology between AC and CuO-AC samples were observed. TGA/DSC analysis revealed that doping of CuO to AC has affected the exothermic and endothermic reaction of the samples. Doping of CuO to AC also brought a significant increase in the degree of crystallinity due to the carbothermal reduction of CuO into Cu. Production of CuO-doped AC was successfully characterized and revealed the potential enhancement for waste treatment.
Mohd Shafiq Shamsuddin; Muhammad Azwadi Sulaiman; Nik Raihan Nik Yusoff; Mahani Yusoff; Noor Syuhadah Subki. Morphology of CuO-Doped Activated Carbon from Kenaf Core Fiber. Solid State Phenomena 2017, 264, 169 -172.
AMA StyleMohd Shafiq Shamsuddin, Muhammad Azwadi Sulaiman, Nik Raihan Nik Yusoff, Mahani Yusoff, Noor Syuhadah Subki. Morphology of CuO-Doped Activated Carbon from Kenaf Core Fiber. Solid State Phenomena. 2017; 264 ():169-172.
Chicago/Turabian StyleMohd Shafiq Shamsuddin; Muhammad Azwadi Sulaiman; Nik Raihan Nik Yusoff; Mahani Yusoff; Noor Syuhadah Subki. 2017. "Morphology of CuO-Doped Activated Carbon from Kenaf Core Fiber." Solid State Phenomena 264, no. : 169-172.
A series of single carbon source and metal oxide assisted carbon source were prepared by mechanochemical process followed by carbothermal reduction which obtained via the reaction between activated carbon (AC) from rubber wood sawdust (Havea brasiliensis) and CuO precussor. Microstructure of the single AC and CuO assisted AC (CuO-AC) has been studied using Field Emission Scanning Electron Microscopy (FESEM). The products were further characterized using X-ray diffraction (XRD) and thermal analysis (TG and DTA). A significant difference of the microstructure between AC and CuO-AC samples were observed in FESEM micrograph. The micrograph of single AC in indicates porous structure with numerous pores present due to dehydration of volatile matters. Milling process and reduction of CuO by AC has contributed to the increasing formation of porous structure with nanopore size ranging from 100-200 nm. TG and DTA results revealed that single AC and CuO-AC have a significant difference in thermal decomposition and stability. Doping of CuO to AC has affected the exothermic and endothermic reaction of the samples. These were further being clarified by X-ray diffraction where phase analysis is studied. It was found that the addition of CuO to AC brought a significant increase in the degree of crystallinity which is accompanied by mechanochemical process followed by carbothermal reduction to produce Cu. Incomplete reduction also cause the formation of Cu2O. Production of CuO-AC were successfully characterized and revealed the potential enhancement for waste treatment.
Muhammad Azwadi Sulaiman; Mohd Shafiq Shamsuddin; Nik Raihan Nik Yusoff; Mahani Yusoff; Noor Syuhadah Subki. Microstructure of CuO Assisted Activated Carbon Adsorbent from Rubber Wood Sawdust Produced by Mechanochemical Processing. Solid State Phenomena 2017, 264, 215 -219.
AMA StyleMuhammad Azwadi Sulaiman, Mohd Shafiq Shamsuddin, Nik Raihan Nik Yusoff, Mahani Yusoff, Noor Syuhadah Subki. Microstructure of CuO Assisted Activated Carbon Adsorbent from Rubber Wood Sawdust Produced by Mechanochemical Processing. Solid State Phenomena. 2017; 264 ():215-219.
Chicago/Turabian StyleMuhammad Azwadi Sulaiman; Mohd Shafiq Shamsuddin; Nik Raihan Nik Yusoff; Mahani Yusoff; Noor Syuhadah Subki. 2017. "Microstructure of CuO Assisted Activated Carbon Adsorbent from Rubber Wood Sawdust Produced by Mechanochemical Processing." Solid State Phenomena 264, no. : 215-219.