This page has only limited features, please log in for full access.

Dr. Georgios Bampos
University of Patras, Department of Chemical Engineering

Basic Info


Research Keywords & Expertise

0 electrocatalyst
0 Advanced oxidation processes (AOPs)
0 Catalysis & catalytic materials
0 Electrocatalysis and fuel cells
0 Materials analysis and characterization

Fingerprints

electrocatalyst

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Review
Published: 22 August 2021 in Environments
Reads 0
Downloads 0

Nowadays, the research on the environmental applications of electrochemistry to remove recalcitrant and priority pollutants and, in particular, drugs from the aqueous phase has increased dramatically. This literature review summarizes the applications of electrochemical oxidation in recent years to decompose pharmaceuticals that are often detected in environmental samples such as carbamazapine, sulfamethoxazole, tetracycline, diclofenac, ibuprofen, ceftazidime, ciprofloxacin, etc. Similar to most physicochemical processes, efficiency depends on many operating parameters, while the combination with either biological or other physicochemical methods seems particularly attractive. In addition, various strategies such as using three-dimensional electrodes or the electrosynthesis of hydrogen peroxide have been proposed to overcome the disadvantages of electrochemical oxidation. Finally, some guidelines are proposed for future research into the applications of environmental electrochemistry for the degradation of xenobiotic compounds and micropollutants from environmental matrices. The main goal of the present review paper is to facilitate future researchers to design their experiments concerning the electrochemical oxidation processes for the degradation of micropollutants/emerging contaminants, especially, some specific drugs considering, also, the existing limitations of each process.

ACS Style

Georgios Bampos; Athanasia Petala; Zacharias Frontistis. Recent Trends in Pharmaceuticals Removal from Water Using Electrochemical Oxidation Processes. Environments 2021, 8, 85 .

AMA Style

Georgios Bampos, Athanasia Petala, Zacharias Frontistis. Recent Trends in Pharmaceuticals Removal from Water Using Electrochemical Oxidation Processes. Environments. 2021; 8 (8):85.

Chicago/Turabian Style

Georgios Bampos; Athanasia Petala; Zacharias Frontistis. 2021. "Recent Trends in Pharmaceuticals Removal from Water Using Electrochemical Oxidation Processes." Environments 8, no. 8: 85.

Journal article
Published: 27 July 2021 in Nanomaterials
Reads 0
Downloads 0

The propane steam reforming (PSR) reaction was investigated over catalysts derived from LaNiO3 (LN), La0.8Sr0.2NiO3 (LSN), and noble metal-substituted LNMx and LSNMx (M = Ru, Rh; x = 0.01, 0.1) perovskites. The incorporation of foreign cations in the A and/or B sites of the perovskite structure resulted in an increase in the specific surface area, a shift of XRD lines toward lower diffraction angles, and a decrease of the mean primary crystallite size of the parent material. Exposure of the as-prepared samples to reaction conditions resulted in the in situ development of new phases including metallic Ni and La2O2CO3, which participate actively in the PSR reaction. The LN-derived catalyst exhibited higher activity compared to LSN, and its performance for the title reaction did not change appreciably following partial substitution of Ru for Ni. In contrast, incorporation of Ru and, especially, Rh in the LSN perovskite matrix resulted in the development of catalysts with significantly enhanced catalytic performance, which improved by increasing the noble metal content. The best results were obtained for the LSNRh0.1-derived sample, which exhibited excellent long-term stability for 40 hours on stream as well as high propane conversion (XC3H8 = 92%) and H2 selectivity (SH2 = 97%) at 600 °C.

ACS Style

Theodora Ramantani; Georgios Bampos; Andreas Vavatsikos; Georgios Vatskalis; Dimitris Kondarides. Propane Steam Reforming over Catalysts Derived from Noble Metal (Ru, Rh)-Substituted LaNiO3 and La0.8Sr0.2NiO3 Perovskite Precursors. Nanomaterials 2021, 11, 1931 .

AMA Style

Theodora Ramantani, Georgios Bampos, Andreas Vavatsikos, Georgios Vatskalis, Dimitris Kondarides. Propane Steam Reforming over Catalysts Derived from Noble Metal (Ru, Rh)-Substituted LaNiO3 and La0.8Sr0.2NiO3 Perovskite Precursors. Nanomaterials. 2021; 11 (8):1931.

Chicago/Turabian Style

Theodora Ramantani; Georgios Bampos; Andreas Vavatsikos; Georgios Vatskalis; Dimitris Kondarides. 2021. "Propane Steam Reforming over Catalysts Derived from Noble Metal (Ru, Rh)-Substituted LaNiO3 and La0.8Sr0.2NiO3 Perovskite Precursors." Nanomaterials 11, no. 8: 1931.

Journal article
Published: 01 September 2020 in Catalysis Today
Reads 0
Downloads 0
ACS Style

Georgios Bampos; Labrini Sygellou; Symeon Bebelis. Oxygen reduction reaction activity of Pd-based bimetallic electrocatalysts in alkaline medium. Catalysis Today 2020, 355, 685 -697.

AMA Style

Georgios Bampos, Labrini Sygellou, Symeon Bebelis. Oxygen reduction reaction activity of Pd-based bimetallic electrocatalysts in alkaline medium. Catalysis Today. 2020; 355 ():685-697.

Chicago/Turabian Style

Georgios Bampos; Labrini Sygellou; Symeon Bebelis. 2020. "Oxygen reduction reaction activity of Pd-based bimetallic electrocatalysts in alkaline medium." Catalysis Today 355, no. : 685-697.

Journal article
Published: 30 January 2020 in Catalysis Today
Reads 0
Downloads 0

This study reports the heterogeneous activation of sodium persulfate (SPS) by La0.8Sr0.2CoO3-δ (LSC) perovskite oxide for the degradation of sulfamethoxazole (SMX), a representative antibiotic agent. LSC was synthesized by a combustion method and characterized with respect to its physicochemical characteristics by means of nitrogen isotherm absorption (BET), X-ray diffraction (XRD), scanning electron microscopy (SEM/EDS) and transmission electron microscopy (TEM/HRTEM). LSC showed high activity towards SPS activation, resulting in complete SMX degradation in short time periods. The effect of SPS (100-500 mg/L), catalyst (100-500 mg/L) and SMX (0.125-0.5 mg/L) concentrations, as well as initial solution pH on SMX removal was studied. Apart from ultrapure water (UPW), additional experiments were conducted in bottled water (BW) and secondary treated wastewater (WW), showing the existence of retarding phenomena in SMX degradation. In order to further investigate these phenomena, experiments in UPW spiked with bicarbonate or chloride ions and humic acid were also carried out. The role of reactive oxygen species (sulfate and hydroxyl radicals) was determined with the use of suitable scavengers (methanol, t-butanol). Catalyst stability was assessed for five consecutive runs showing LSC superior recyclability. Coupling activators (LSC with simulated solar irradiation) resulted in faster SMX degradation in a synergistic rather than cumulative way.

ACS Style

C. Gkika; A. Petala; Z. Frontistis; G. Bampos; D. Hela; I. Konstantinou; D. Mantzavinos. Heterogeneous activation of persulfate by lanthanum strontium cobaltite for sulfamethoxazole degradation. Catalysis Today 2020, 361, 130 -138.

AMA Style

C. Gkika, A. Petala, Z. Frontistis, G. Bampos, D. Hela, I. Konstantinou, D. Mantzavinos. Heterogeneous activation of persulfate by lanthanum strontium cobaltite for sulfamethoxazole degradation. Catalysis Today. 2020; 361 ():130-138.

Chicago/Turabian Style

C. Gkika; A. Petala; Z. Frontistis; G. Bampos; D. Hela; I. Konstantinou; D. Mantzavinos. 2020. "Heterogeneous activation of persulfate by lanthanum strontium cobaltite for sulfamethoxazole degradation." Catalysis Today 361, no. : 130-138.

Journal article
Published: 15 October 2019 in Applied Catalysis A: General
Reads 0
Downloads 0

Reformate gas mixtures introduced into PEM fuel cells may contain traces of CO which can irreversibly poison electrocatalysts. A means to eliminate such traces of CO from reformate mixtures via reactive adsorption onto solid catalysts is described. The reactive adsorption/desorption characteristics of CO were investigated over Pd/CeO2 catalysts with respect of Pd loading and adsorption temperature employing in situ FTIR and transient MS techniques. Results showed that CO adsorption is enhanced with increasing Pd content or decreasing adsorption temperature. Production of CO2 during CO-TPD occurs in a bifuntional manner with the participation of both the metallic phase and the support. Although the adsorption of CO is limited upon interaction of 0.25%Pd/CeO2 catalyst with a reformate mixture, results demonstrate that elimination of residual CO, present in the exit of methanation (or oxidation) reactor, is feasible via successive cycles of CO adsorption and oxidation at 40 °C.

ACS Style

Georgios Bampos; Panagiota Bika; Paraskevi Panagiotopoulou; Xenophon E. Verykios. Reactive adsorption of CO from low CO concentrations streams on the surface of Pd/CeO2 catalysts. Applied Catalysis A: General 2019, 588, 117305 .

AMA Style

Georgios Bampos, Panagiota Bika, Paraskevi Panagiotopoulou, Xenophon E. Verykios. Reactive adsorption of CO from low CO concentrations streams on the surface of Pd/CeO2 catalysts. Applied Catalysis A: General. 2019; 588 ():117305.

Chicago/Turabian Style

Georgios Bampos; Panagiota Bika; Paraskevi Panagiotopoulou; Xenophon E. Verykios. 2019. "Reactive adsorption of CO from low CO concentrations streams on the surface of Pd/CeO2 catalysts." Applied Catalysis A: General 588, no. : 117305.

Research article
Published: 28 February 2019 in Environmental Science and Pollution Research
Reads 0
Downloads 0

In the present work, the sonocatalytic degradation of butylparaben was investigated using Pd immobilized on carbon black as the sonocatalyst. The presence of 25 mg/L 10Pd/C significantly increased the removal rate of butylparaben and the observed kinetic constant increased from 0.0126 to 0.071 min−1, while the synergy index between sonolysis and adsorption was 70.7%. The BP degradation followed pseudo-first-order kinetics with the apparent kinetic constant decreased from 0.071 to 0.030 min−1 when the initial concentration of butylparaben increased from 0.5 to 2 mg/L. The process was being favored slightly under alkaline conditions. The presence of organic matter (20 mg/L humic acid) reduced the apparent kinetic constant more than two times. The addition of chlorides up to 250 mg/L did not significantly reduce the rate of reaction, while the presence of 250 mg/L bicarbonates reduced the observed kinetic constant from 0.071 to 0.0472 min−1. The prepared catalyst retains the efficiency after five subsequent experiments since the apparent kinetic constant was only slightly decreased from 0.071 to 0.059 min−1.

ACS Style

Georgios Bampos; Zacharias Frontistis. Sonocatalytic degradation of butylparaben in aqueous phase over Pd/C nanoparticles. Environmental Science and Pollution Research 2019, 26, 11905 -11919.

AMA Style

Georgios Bampos, Zacharias Frontistis. Sonocatalytic degradation of butylparaben in aqueous phase over Pd/C nanoparticles. Environmental Science and Pollution Research. 2019; 26 (12):11905-11919.

Chicago/Turabian Style

Georgios Bampos; Zacharias Frontistis. 2019. "Sonocatalytic degradation of butylparaben in aqueous phase over Pd/C nanoparticles." Environmental Science and Pollution Research 26, no. 12: 11905-11919.

Review article
Published: 13 February 2019 in Catalysis Today
Reads 0
Downloads 0

In this study, carbon black (CB) was employed as a heterogeneous activator for the conversion of sodium persulfate (SPS) to reactive species for the degradation of drug diclofenac (DCF). Experiments were performed at DCF concentrations between 0.5 and 4 mg/L, CB concentrations between 25 and 75 mg/L and SPS concentrations between 25 and 200 mg/L. Degradation rates, based on pseudo-first order kinetics, generally increased with decreasing DCF and increasing CB concentrations. The rate also increased with increasing SPS concentration up to 50 mg/L and decreased at higher values due to scavenging effects. Besides experiments in ultrapure water (UPW), real matrices were tested (i.e. bottled water (BW), surface water (SW), secondary treated wastewater (WW)), as well as UPW spiked with bicarbonate (50-500 mg/L), chloride (100-500 mg/L) or humic acid (10-20 mg/L). Degradation rates decreased with increasing matrix complexity, while the addition of chloride or humic acid was detrimental to the process; on the contrary, bicarbonate at 500 mg/L enhanced DCF degradation rate nearly five-fold. The effect of initial solution pH was also studied in the range 3-9.5 showing that degradation was not pH-sensitive. Experiments were also performed activating SPS by simulated solar radiation or 20 kHz ultrasound with or without CB. Coupling activators (i.e. CB with solar light or CB with ultrasound) favored DCF degradation in a synergistic way, with the level of synergy being 45-50%.

ACS Style

Sofia Dimitriadou; Zacharias Frontistis; Athanasia Petala; Georgios Bampos; Dionissios Mantzavinos. Carbocatalytic activation of persulfate for the removal of drug diclofenac from aqueous matrices. Catalysis Today 2019, 355, 937 -944.

AMA Style

Sofia Dimitriadou, Zacharias Frontistis, Athanasia Petala, Georgios Bampos, Dionissios Mantzavinos. Carbocatalytic activation of persulfate for the removal of drug diclofenac from aqueous matrices. Catalysis Today. 2019; 355 ():937-944.

Chicago/Turabian Style

Sofia Dimitriadou; Zacharias Frontistis; Athanasia Petala; Georgios Bampos; Dionissios Mantzavinos. 2019. "Carbocatalytic activation of persulfate for the removal of drug diclofenac from aqueous matrices." Catalysis Today 355, no. : 937-944.

Journal article
Published: 06 November 2018 in Applied Catalysis B: Environmental
Reads 0
Downloads 0

A series of La0.8Sr0.2CoxFe1-xO3-δ (LSCF) perovskite oxides, including La0.8Sr0.2CoO3-δ (LSC) and La0.8Sr0.2FeO3-δ (LSF), were synthesized via a combustion method and, mixed with carbon black at a mass ratio 3:1, were studied towards their oxygen reduction reaction (ORR) activity in 0.1 M KOH solution at room temperature, using the thin-film rotating disk electrode (RDE) technique. The highest and lowest ORR (specific and mass) activities among the tested electrocatalysts were exhibited by LSC and LSF, respectively. Increasing Co content and at the same time decreasing Fe content in the LSCF composition, resulted in ORR specific activity enhancement as well as in an increase in the number of transferred electrons, from ca. 2 (for LSF) to ca. 4 (for LSC), implying a change in the ORR mechanism. The observed change in ORR activity of the perovskite/C electrocatalysts upon gradual substitution of iron by cobalt was associated with induced changes in the surface B-sites electronic structure and in surface oxygen vacancy formation.

ACS Style

Alexandros Safakas; Georgios Bampos; Symeon Bebelis. Oxygen reduction reaction on La0.8Sr0.2CoxFe1-xO3-δ perovskite/carbon black electrocatalysts in alkaline medium. Applied Catalysis B: Environmental 2018, 244, 225 -232.

AMA Style

Alexandros Safakas, Georgios Bampos, Symeon Bebelis. Oxygen reduction reaction on La0.8Sr0.2CoxFe1-xO3-δ perovskite/carbon black electrocatalysts in alkaline medium. Applied Catalysis B: Environmental. 2018; 244 ():225-232.

Chicago/Turabian Style

Alexandros Safakas; Georgios Bampos; Symeon Bebelis. 2018. "Oxygen reduction reaction on La0.8Sr0.2CoxFe1-xO3-δ perovskite/carbon black electrocatalysts in alkaline medium." Applied Catalysis B: Environmental 244, no. : 225-232.

Research article
Published: 08 May 2018 in Journal of Applied Electrochemistry
Reads 0
Downloads 0

A series of eight 10 wt% Pd–Zn/C electrocatalysts were synthesized via wet impregnation and compared concerning their activity for the oxygen reduction reaction (ORR) in 0.1 M HClO4 and room temperature, using the thin-film rotating disk electrode technique. The electrocatalysts differed in Pd:Zn mass ratio and reduction temperature. Pt/C, Pd/C and Zn/C electrocatalysts of 10 wt% metal loading, also prepared via wet impregnation and reduced at 300 °C, were used as reference. The highest activity among the Pd–Zn/C, Pd/C and Zn/C electrocatalyts was exhibited by Pd–Zn/C reduced at 300 °C and with a Pd:Zn mass ratio equal to 3:1. Its specific activity was higher than that of 10 wt% Pt/C (by ca. 3.5 times at 0.5 V vs. Ag/AgCl), whereas their mass activities were similar. On the contrary, the ORR specific activity of a 29 wt% Pd–Zn/C electrocatalyst reduced at 300 °C and with Pd:Zn mass ratio 3:1 was lower than that of a 29 wt% Pt/C electrocatalyst prepared in the same manner, by ca. 3.7 times at 0.5 V vs. Ag/AgCl, although their mass activities were similar above this potential. Both these catalysts were clearly less active than a commercial (TKK) 29 wt% Pt/C electrocatalyst.

ACS Style

Georgios Bampos; Dimitris I. Kondarides; Symeon Bebelis. Pd–Zn/C bimetallic electrocatalysts for oxygen reduction reaction. Journal of Applied Electrochemistry 2018, 48, 675 -689.

AMA Style

Georgios Bampos, Dimitris I. Kondarides, Symeon Bebelis. Pd–Zn/C bimetallic electrocatalysts for oxygen reduction reaction. Journal of Applied Electrochemistry. 2018; 48 (6):675-689.

Chicago/Turabian Style

Georgios Bampos; Dimitris I. Kondarides; Symeon Bebelis. 2018. "Pd–Zn/C bimetallic electrocatalysts for oxygen reduction reaction." Journal of Applied Electrochemistry 48, no. 6: 675-689.

Original paper
Published: 13 April 2017 in Topics in Catalysis
Reads 0
Downloads 0

Carbon-supported 7.5 wt% Pd–2.5 wt% M (M: Ag, Co, Cu, Fe, Ni, Zn) bimetallic catalysts were synthesized via wet impregnation and assessed as electrocatalysts for the oxygen reduction reaction (ORR) in acidic solution at room temperature, using the thin-film rotating disk electrode technique. Monometallic 10 wt% Pt/C and 10 wt% Pd/C catalysts, prepared via the same method, were used as reference materials. The highest activity for ORR among the tested electrocatalysts was exhibited by PdZn/C and the lowest by Pd/C and PdCu/C. The activity of the rest Pd-based electrocatalysts followed the descending order: PdNi/C > PdAg/C ≥ PdCo/C > PdFe/C. The specific activity of PdZn/C was higher than that of Pt/C (more than 3 times higher for potentials 0.35–0.5 V versus Ag/AgCl), whereas their mass activities were similar. PdNi/C and PdAg/C also exhibited higher specific activity than Pt/C for potentials lower than ca. 0.4 V versus Ag/AgCl, but their mass activity was lower. The high ORR activity of PdZn/C, which renders it a promising alternative to Pt-based cathodic electrocatalysts in PEMFCs, was associated with the presence of Pd–Zn alloy in the active phase, as revealed via XRD and TEM.

ACS Style

Georgios Bampos; Symeon Bebelis; Dimitris I. Kondarides; Xenophon Verykios. Comparison of the Activity of Pd–M (M: Ag, Co, Cu, Fe, Ni, Zn) Bimetallic Electrocatalysts for Oxygen Reduction Reaction. Topics in Catalysis 2017, 60, 1260 -1273.

AMA Style

Georgios Bampos, Symeon Bebelis, Dimitris I. Kondarides, Xenophon Verykios. Comparison of the Activity of Pd–M (M: Ag, Co, Cu, Fe, Ni, Zn) Bimetallic Electrocatalysts for Oxygen Reduction Reaction. Topics in Catalysis. 2017; 60 (15-16):1260-1273.

Chicago/Turabian Style

Georgios Bampos; Symeon Bebelis; Dimitris I. Kondarides; Xenophon Verykios. 2017. "Comparison of the Activity of Pd–M (M: Ag, Co, Cu, Fe, Ni, Zn) Bimetallic Electrocatalysts for Oxygen Reduction Reaction." Topics in Catalysis 60, no. 15-16: 1260-1273.