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Jolly Bhadra
Young Scientists Center (YSC), Qatar University, Doha 2713, Qatar

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Journal article
Published: 21 March 2021 in Sustainability
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Sports has the potential to integrate with different scientific subjects, including materials science and engineering, making it an ideal approach to enhance the students’ affinity toward sustainable education in science, technology, engineering, and mathematics (STEM). Amid gradual educational reformations in the state of Qatar, a distinctive STEM program titled, “Science in Sports” (SIS) was launched to investigate STEM integrated learning in secondary school students. The participant students, 248 students (112 females and 136 males) from 15 different government-operated (public) secondary schools, from rural and urban areas, were given STEM workshops on one of the sports materials, during this pilot study, resultantly challenging them to engineer a sports product. The study employed a mixed-method study in which quantitative approaches were applied to analyze the program effectiveness, with a t-test statistical analysis performed over data collected from a period of five continuous years from 2012 to 2017 in five different cycles. A more dominant data collection included pre and post surveys, substantiating observations of the program facilitator and their schoolteachers were included in this research and development (R&D) study to review the student learning behavior for a qualitative approach. Moreover, the results of the strength, weakness, opportunities, and threats (SWOT) analysis provided an overview of the program’s effectiveness in implicating the engagement of the students in exhibiting their prototypical skills in engineering sports products along with STEM literacy. Apart from understanding the scientific concepts/principles applied in simple sports applications, student attitudes toward STEM fields augmented, as witnessed by the student productivity.

ACS Style

Ruba Ali; Jolly Bhadra; Nitha Siby; Zubair Ahmad; Noora Al-Thani. A STEM Model to Engage Students in Sustainable Science Education through Sports: A Case Study in Qatar. Sustainability 2021, 13, 3483 .

AMA Style

Ruba Ali, Jolly Bhadra, Nitha Siby, Zubair Ahmad, Noora Al-Thani. A STEM Model to Engage Students in Sustainable Science Education through Sports: A Case Study in Qatar. Sustainability. 2021; 13 (6):3483.

Chicago/Turabian Style

Ruba Ali; Jolly Bhadra; Nitha Siby; Zubair Ahmad; Noora Al-Thani. 2021. "A STEM Model to Engage Students in Sustainable Science Education through Sports: A Case Study in Qatar." Sustainability 13, no. 6: 3483.

Journal article
Published: 05 March 2021 in Sustainability
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An unprecedented turn in educational pedagogies due to the COVID-19 pandemic has significantly affected the students’ learning process worldwide. This article describes developing a STEM-based online course during the schools’ closure in the COVID-19 epidemic to combat the virtual science classroom’s limitations that could promise an active STEM learning environment. This learning model of the online STEM-based course successfully developed and exercised on 38 primary–preparatory students helped them to overcome the decline in their learning productivity. Various digital learning resources, including PowerPoint presentations, videos, online simulations, interactive quizzes, and innovative games, were implemented as instructional tools to achieve the respective content objectives. A feedback mechanism methodology was executed to improve online instructional delivery and project learners’ role in a student-centered approach, thereby aiding in the course content’s qualitative assessment. The students’ learning behavior provided concrete insights into the program’s positive outcomes, witnessing minimal student withdrawals and maximum completed assignments. Conclusions had been drawn from the course assessment (by incorporating both synchronous and asynchronous means), student feedback, and SWOT analysis to evaluate the course’s effectiveness.

ACS Style

Azza Abouhashem; Rana Abdou; Jolly Bhadra; Nitha Siby; Zubair Ahmad; Noora Al-Thani. COVID-19 Inspired a STEM-Based Virtual Learning Model for Middle Schools—A Case Study of Qatar. Sustainability 2021, 13, 2799 .

AMA Style

Azza Abouhashem, Rana Abdou, Jolly Bhadra, Nitha Siby, Zubair Ahmad, Noora Al-Thani. COVID-19 Inspired a STEM-Based Virtual Learning Model for Middle Schools—A Case Study of Qatar. Sustainability. 2021; 13 (5):2799.

Chicago/Turabian Style

Azza Abouhashem; Rana Abdou; Jolly Bhadra; Nitha Siby; Zubair Ahmad; Noora Al-Thani. 2021. "COVID-19 Inspired a STEM-Based Virtual Learning Model for Middle Schools—A Case Study of Qatar." Sustainability 13, no. 5: 2799.

Journal article
Published: 08 December 2020 in Molecules
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Despite the remarkable progress in perovskite solar cells (PSCs), their instability and rapid degradation over time still restrict their commercialization. A 2D capping layer has been proved to overcome the stability issues; however, an in-depth understanding of the complex degradation processes over a prolonged time at PSC interfaces is crucial for improving their stability. In the current work, we investigated the stability of a triple cation 3D ([(FA0.83MA0.17)Cs0.05]Pb(I0.83Br0.17)3) and 2D/3D PSC fabricated by a layer-by-layer deposition technique (PEAI-based 2D layer over triple cation 3D perovskite) using a state-of-art characterization technique: electrochemical impedance spectroscopy (EIS). A long-term stability test over 24 months was performed on the 3D and 2D/3D PSCs with an initial PCE of 18.87% and 20.21%, respectively, to suggest a more practical scenario. The current-voltage (J-V) and EIS results showed degradation in both the solar cell types; however, a slower degradation rate was observed in 2D/3D PSCs. Finally, the quantitative analysis of the key EIS parameters affected by the degradation in 3D and 2D/3D PSCs were discussed.

ACS Style

Sumayya M. Abdulrahim; Zubair Ahmad; Jolly Bhadra; Noora Jabor Al-Thani. Long-Term Stability Analysis of 3D and 2D/3D Hybrid Perovskite Solar Cells Using Electrochemical Impedance Spectroscopy. Molecules 2020, 25, 5794 .

AMA Style

Sumayya M. Abdulrahim, Zubair Ahmad, Jolly Bhadra, Noora Jabor Al-Thani. Long-Term Stability Analysis of 3D and 2D/3D Hybrid Perovskite Solar Cells Using Electrochemical Impedance Spectroscopy. Molecules. 2020; 25 (24):5794.

Chicago/Turabian Style

Sumayya M. Abdulrahim; Zubair Ahmad; Jolly Bhadra; Noora Jabor Al-Thani. 2020. "Long-Term Stability Analysis of 3D and 2D/3D Hybrid Perovskite Solar Cells Using Electrochemical Impedance Spectroscopy." Molecules 25, no. 24: 5794.

Review
Published: 20 August 2020 in Nanomaterials
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The future photovoltaic technologies based on perovskite materials are aimed to build low tech, truly economical, easily fabricated, broadly deployable, and trustworthy solar cells. Hole transport material (HTM) free perovskite solar cells (PSCs) are among the most likely architectures which hold a distinctive design and provide a simple way to produce large-area and cost-effective manufacture of PSCs. Notably, in the monolithic scheme of the HTM-free PSCs, all layers can be printed using highly reproducible and morphology-controlled methods, and this design has successfully been demonstrated for industrial-scale fabrication. In this review article, we comprehensively describe the recent advancements in the different types of mesoporous (nanostructured) and planar HTM-free PSCs. In addition, the effect of various nanostructures and mesoporous layers on their performance is discussed using the electrochemical impedance spectroscopy (EIS) technique. We bring together the different perspectives that researchers have developed to interpret and analyze the EIS data of the HTM-free PSCs. Their analysis using the EIS tool, the limitations of these studies, and the future work directions to overcome these limitations to enhance the performance of HTM-free PSCs are comprehensively considered.

ACS Style

Sumayya M. Abdulrahim; Zubair Ahmad; Jolly Bahadra; Noora J. Al-Thani. Electrochemical Impedance Spectroscopy Analysis of Hole Transporting Material Free Mesoporous and Planar Perovskite Solar Cells. Nanomaterials 2020, 10, 1635 .

AMA Style

Sumayya M. Abdulrahim, Zubair Ahmad, Jolly Bahadra, Noora J. Al-Thani. Electrochemical Impedance Spectroscopy Analysis of Hole Transporting Material Free Mesoporous and Planar Perovskite Solar Cells. Nanomaterials. 2020; 10 (9):1635.

Chicago/Turabian Style

Sumayya M. Abdulrahim; Zubair Ahmad; Jolly Bahadra; Noora J. Al-Thani. 2020. "Electrochemical Impedance Spectroscopy Analysis of Hole Transporting Material Free Mesoporous and Planar Perovskite Solar Cells." Nanomaterials 10, no. 9: 1635.

Journal article
Published: 01 December 2019 in Arabian Journal of Chemistry
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This work presents a method on the preparation and performance of four silver (Ag) concentrations in polyaniline (PANI) and polyvinyl alcohol (PVA) nanocomposite blend (PNPAg). The synthesis of Ag nanoparticles is first performed by photo reduction and then aniline is polymerized in Ag-PVA matrix. Morphological analysis by SEM and TEM reveals formation of nanoparticles with diameter 30–70nm. Nanocomposites with lower Ag concentrations have highly aligned PNPAg nanofibers of diameter 50–80nm and agglomeration for the one with higher concentrations. In addition, FTIR spectra show a systematic change in its characteristic peaks with increase in Ag contents. The crystallinity study depicts the tetragonal crystal structure of metallic nanocomposites having same particle sizes as obtained in SEM and TEM. In order to explore the possible applications of these nanocomposites in electronic industry, their electrical properties are investigated. The in-plane I-V characteristics indicate a transition of polymer nanocomposites from non-ohmic to ohmic material with increase of Ag content. The room temperature electrical conductivities are found to be in the range of 4.74×10−4 to 3.96×10−2S/m with no major difference in activation energy for all nanocomposites

ACS Style

J. Bhadra; N.J. Al-Thani; S. Karmakar; N.K. Madi. Photo-reduced route of polyaniline nanofiber synthesis with embedded silver nanoparticles. Arabian Journal of Chemistry 2019, 12, 4848 -4860.

AMA Style

J. Bhadra, N.J. Al-Thani, S. Karmakar, N.K. Madi. Photo-reduced route of polyaniline nanofiber synthesis with embedded silver nanoparticles. Arabian Journal of Chemistry. 2019; 12 (8):4848-4860.

Chicago/Turabian Style

J. Bhadra; N.J. Al-Thani; S. Karmakar; N.K. Madi. 2019. "Photo-reduced route of polyaniline nanofiber synthesis with embedded silver nanoparticles." Arabian Journal of Chemistry 12, no. 8: 4848-4860.

Original article
Published: 01 March 2019 in Emergent Materials
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This work presents an extensively detailed study on preparation and performance of four different hydrochloric acid–doped polyaniline (PANI) blends. The blends are obtained by changing four different polymers, viz. polyvinyl alcohol (PVA), polystyrene (PS), polyvinyl chloride (PVC), and sodium alginate (SA) keeping PANI concentration constant. Finally, the blend films deposited on substrates are used to characterize the surface, structural morphology, chemical interaction (SEM and FTIR), thermal properties (TGA and DSC), and mechanical properties by tensile testing. The morphological analysis shows uniform chemical blending of PANI with all three insulating matrices except in PVC matrix. FTIR and TGA results also suffice the fact that PANI particle has a chemical interaction with polymer backbones. Electrical conductivity study of PANI blend reveals that PANI-PVA forms the highest conducting blend with the conductivity of order of 10−2 S/cm and PANI-PVC has the lowest at 10−13S/cm.

ACS Style

Jolly Bhadra; Noora Al-Thani. Advances in blends preparation based on electrically conducting polymer. Emergent Materials 2019, 2, 67 -77.

AMA Style

Jolly Bhadra, Noora Al-Thani. Advances in blends preparation based on electrically conducting polymer. Emergent Materials. 2019; 2 (1):67-77.

Chicago/Turabian Style

Jolly Bhadra; Noora Al-Thani. 2019. "Advances in blends preparation based on electrically conducting polymer." Emergent Materials 2, no. 1: 67-77.

Book chapter
Published: 01 January 2017 in Micro and Nano Fibrillar Composites (MFCs and NFCs) from Polymer Blends
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ACS Style

H.P.S. Abdul Khalil; A. Abdulkareem; M.M. Abolhasani; J. Abraham; N. Al-Thani; S. Azimi; J. Bhadra; J.-H. Chang; J. Cherusseri; Z.Z. Denchev; N.V. Dencheva; R. Dungani; R. Hemanth; K. Jayanarayanan; K. Joseph; I. Kelnar; S. Loganathan; H.J. Maria; R.K. Mishra; J. Mishra; G.C. Nayak; A.F. Owolabi; M.T. Ramesan; Chaturbhuj K. Saurabh; B.-S. Seo; A. Shaji; T. Sharika; K. Suhailath; B. Suresha; S. Thomas; S.K. Tiwari. List of contributors. Micro and Nano Fibrillar Composites (MFCs and NFCs) from Polymer Blends 2017, 1 .

AMA Style

H.P.S. Abdul Khalil, A. Abdulkareem, M.M. Abolhasani, J. Abraham, N. Al-Thani, S. Azimi, J. Bhadra, J.-H. Chang, J. Cherusseri, Z.Z. Denchev, N.V. Dencheva, R. Dungani, R. Hemanth, K. Jayanarayanan, K. Joseph, I. Kelnar, S. Loganathan, H.J. Maria, R.K. Mishra, J. Mishra, G.C. Nayak, A.F. Owolabi, M.T. Ramesan, Chaturbhuj K. Saurabh, B.-S. Seo, A. Shaji, T. Sharika, K. Suhailath, B. Suresha, S. Thomas, S.K. Tiwari. List of contributors. Micro and Nano Fibrillar Composites (MFCs and NFCs) from Polymer Blends. 2017; ():1.

Chicago/Turabian Style

H.P.S. Abdul Khalil; A. Abdulkareem; M.M. Abolhasani; J. Abraham; N. Al-Thani; S. Azimi; J. Bhadra; J.-H. Chang; J. Cherusseri; Z.Z. Denchev; N.V. Dencheva; R. Dungani; R. Hemanth; K. Jayanarayanan; K. Joseph; I. Kelnar; S. Loganathan; H.J. Maria; R.K. Mishra; J. Mishra; G.C. Nayak; A.F. Owolabi; M.T. Ramesan; Chaturbhuj K. Saurabh; B.-S. Seo; A. Shaji; T. Sharika; K. Suhailath; B. Suresha; S. Thomas; S.K. Tiwari. 2017. "List of contributors." Micro and Nano Fibrillar Composites (MFCs and NFCs) from Polymer Blends , no. : 1.

Articles
Published: 27 March 2016 in DESALINATION AND WATER TREATMENT
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Nanocomposites of polyaniline (PANI) with three different concentrations of micrometre-sized sawdust are prepared in aqueous media via chemical casting method at room temperature. Thereafter, the removal efficiency of the obtained composites for lead (Pb) ion from aqueous solutions is studied. The influence of sawdust concentrations on chemical structure and morphology of the composites is investigated by Fourier transform infrared spectroscopy and scanning electron microscopy. In order to investigate the removal efficiency of nanocomposites, a number of studies are performed, such as influence of pH, contact time, metal loading and nanocomposite concentrations. Our investigation suggests that the optimum conditions to obtain the highest efficiency are 5% of sawdust in nanocomposite, pH 5 and 3 min equilibrium time. A novel method of positron annihilation measurement is performed in order to study the mechanism behind adsorption of PANI and composites. Results obtained from positron annihilation are also consistent with that of adsorption experiments. Furthermore, the adsorption kinetic has been studied using the Langmuir adsorption isotherm and the Freundlich adsorption isotherm models; among the two models, Freundlich adsorption isotherm model is found to be better with respect to equilibrium aspect.

ACS Style

N.J. Al-Thani; J. Bhadra; D. Abdulmalik; I. Al-Qaradawi; A. Alashraf; N.K. Madi. Positron annihilation study on polyaniline nanocomposite used for Pb(II) ion removal. DESALINATION AND WATER TREATMENT 2016, 57, 27374 -27385.

AMA Style

N.J. Al-Thani, J. Bhadra, D. Abdulmalik, I. Al-Qaradawi, A. Alashraf, N.K. Madi. Positron annihilation study on polyaniline nanocomposite used for Pb(II) ion removal. DESALINATION AND WATER TREATMENT. 2016; 57 (56):27374-27385.

Chicago/Turabian Style

N.J. Al-Thani; J. Bhadra; D. Abdulmalik; I. Al-Qaradawi; A. Alashraf; N.K. Madi. 2016. "Positron annihilation study on polyaniline nanocomposite used for Pb(II) ion removal." DESALINATION AND WATER TREATMENT 57, no. 56: 27374-27385.

Journal article
Published: 27 February 2016 in Journal of Vinyl and Additive Technology
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This research work presents a simple and effective way for preparation of polyaniline (PANI) nanofiber composites mixed with polyvinyl alcohol or polystyrene (PS) and their application for lead (Pb) removal from an aqueous medium. Interestingly, PANI/PS porous nanofibers show excellent performance as a one-step Pb removal technique from aqueous solutions. The efficiency of Pb removal is found to be more than 95%, which is pretty higher than the previously reported values of other nanocomposites, as Pb removal adsorbents. Furthermore, when pure PANI nanofibers cannot remove Pb in an efficient way, this is a straightforward method for separation from the solution. This is attributable to the high surface area of PANI-PS composites. This study also provides a simple and effective way for the development of new environmental cleaning materials. The PANI/PS composite nanofiber could be a good candidate for efficient Pb removal from wastewater and for deep purification of polluted water. The composite materials have been investigated in terms of morphology, chemical structure, thermal behavior, and defect evolution using Scanning Electron Microscopy, Fourier Transform Infrared Spectroscopy, Differential Scanning Calorimetry, Thermal Gravimetric Analysis, and Positron Annihilation Spectroscopy, respectively. To measure the adsorption capacity and intensity of adsorption, the adsorption data were fitted in Langmuir, and Freundlich models. J. VINYL ADDIT. TECHNOL., 2016. © 2016 Society of Plastics Engineers

ACS Style

Nabil K. Madi; Jolly Bhadra; Noora J. Al‐Thani; Abdullah Alashraf; Dana Abdulmalik; Ilham Al‐Qaradawi. Adsorption study of Pb(II) in aqueous medium using polyaniline nanocomposites. Journal of Vinyl and Additive Technology 2016, 23, 1 .

AMA Style

Nabil K. Madi, Jolly Bhadra, Noora J. Al‐Thani, Abdullah Alashraf, Dana Abdulmalik, Ilham Al‐Qaradawi. Adsorption study of Pb(II) in aqueous medium using polyaniline nanocomposites. Journal of Vinyl and Additive Technology. 2016; 23 ():1.

Chicago/Turabian Style

Nabil K. Madi; Jolly Bhadra; Noora J. Al‐Thani; Abdullah Alashraf; Dana Abdulmalik; Ilham Al‐Qaradawi. 2016. "Adsorption study of Pb(II) in aqueous medium using polyaniline nanocomposites." Journal of Vinyl and Additive Technology 23, no. : 1.

Book chapter
Published: 24 December 2015 in Smart Polymer Nanocomposites
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Polyolefin composites (POCs) are defined as materials that contain two or more phases (chemically and physically) and have a distinct boundary. The careful combination of different systems results in improved structure and function over the individual constituents alone. Polyolefins have a wide range of applications, are inexpensive, and possess a diverse range of features (Robert et al. in Poly Compos 31:604–611, 2010 [1]; Gellert in Turley in Compos Part A Appl Sci 30:1259–1265, 1999 [2]). One of the primary advantages of polyolefins is that they are recyclable. Their properties can also be improved through composite engineering (Hugo et al. in Plast Rubber Compos 40:317–323, 2011 [3]). Polyolefins may be classified into different groups of thermoplastics and elastomers depending on the type of monomer and their structure (Soares and McKenna in Polyolefin reaction engineering, VCH Verlag GmbH & Co., Weinheim, 2012 [4]). Polyethylene (containing an ethylene monomer unit) and polypropylene (containing propylene monomer units) are two widely used polyolefins with diverse applications (Saman et al. in J Appl Polym Sci 124:1074–1080, 2012 [5]).

ACS Style

Noora J. Al-Thani; Jolly Bhadra; Khadija M. Zadeh. Polyolefin Composites and Nanocomposites. Smart Polymer Nanocomposites 2015, 157 -179.

AMA Style

Noora J. Al-Thani, Jolly Bhadra, Khadija M. Zadeh. Polyolefin Composites and Nanocomposites. Smart Polymer Nanocomposites. 2015; ():157-179.

Chicago/Turabian Style

Noora J. Al-Thani; Jolly Bhadra; Khadija M. Zadeh. 2015. "Polyolefin Composites and Nanocomposites." Smart Polymer Nanocomposites , no. : 157-179.

Journal article
Published: 01 May 2014 in Synthetic Metals
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ACS Style

J. Bhadra; N.K. Madi; N.J. Al-Thani; Somaya Al-Maadeed. Polyaniline/polyvinyl alcohol blends: Effect of sulfonic acid dopants on microstructural, optical, thermal and electrical properties. Synthetic Metals 2014, 191, 126 -134.

AMA Style

J. Bhadra, N.K. Madi, N.J. Al-Thani, Somaya Al-Maadeed. Polyaniline/polyvinyl alcohol blends: Effect of sulfonic acid dopants on microstructural, optical, thermal and electrical properties. Synthetic Metals. 2014; 191 ():126-134.

Chicago/Turabian Style

J. Bhadra; N.K. Madi; N.J. Al-Thani; Somaya Al-Maadeed. 2014. "Polyaniline/polyvinyl alcohol blends: Effect of sulfonic acid dopants on microstructural, optical, thermal and electrical properties." Synthetic Metals 191, no. : 126-134.