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Fallah Talooki E, Ghorbani M, Rahimnejad M, Soleimani Lashkenari M. Assessment of the effective parameters for the enhancement of light-harvesting power in the photoelectrochemical microbial fuel cell. ENVIRONMENTAL TECHNOLOGY 2024; 45:3737-3750. [PMID: 37327312 DOI: 10.1080/09593330.2023.2227390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 06/12/2023] [Indexed: 06/18/2023]
Abstract
Photo-assisted microbial fuel cells (PMFCs) are novel bioelectrochemical systems that employ light to harvest bioelectricity and efficient contaminant reduction. In this study, the impact of different operational conditions on the electricity generation outputs in a photoelectrochemical double chamber configuration Microbial fuel cell using a highly useful photocathode are evaluated and their trends are compared with the photoreduction efficiency trends. As a photocathode, a binder-free photo electrode decorated with dispersed polyaniline nanofiber (PANI)-cadmium sulphide Quantum Dots (QDs) is prepared here to catalyse the chromium (VI) reduction reaction in a cathode chamber with an improvement in power generation performance. Bioelectricity generation is examined in various process conditions like photocathode materials, pH, initial concentration of catholyte, illumination intensity and time of illumination. Results show that, despite the harmful effect of the initial contaminant concentration on the reduction efficiency of the contaminant, this parameter exhibits a superior ability for improving the power generation efficiency in a Photo-MFC. Furthermore, the calculated power density under higher light irradiation intensity has experienced a significant increase, which is due to an increment in the number of photons produced and an increase in their chance of reaching the electrodes surface. On the other hand, additional results indicate that the power generation decreases with the rise of pH and has witnessed the same trend as the photoreduction efficiency.
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Affiliation(s)
- Elahe Fallah Talooki
- Faculty of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran
| | - Mohsen Ghorbani
- Faculty of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran
| | - Mostafa Rahimnejad
- Biofuel and Renewable Energy Research Center, Chemical Engineering Department, Babol Noshirvani University of Technology, Babol, Iran
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Hasanpour M, Motahari S, Jing D, Hatami M. Investigation of operation parameters on the removal efficiency of methyl orange pollutant by cellulose/zinc oxide hybrid aerogel. CHEMOSPHERE 2021; 284:131320. [PMID: 34198060 DOI: 10.1016/j.chemosphere.2021.131320] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 06/03/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
In this study, Cellulose/Zinc Oxide-x (CA/ZnO-x) hybrid aerogel with various concentrations of Zn2+ ion is synthesized through the hydrothermal method and used for organic pollutant removal. The CA/ZnO-x hybrid aerogel was characterized by XRD, UV-Visible, DRS, FTIR, FESEM, EDS, BET, LC-MS-MS analyses. In the present study, CA/ZnO-x hybrid aerogel as photocatalyst was used to investigate the influence of the photocatalytic degradation of methyl orange (MO) from an aqueous solution under UV irradiation. The morphology of CA/ZnO-x hybrid aerogels exhibited that the ZnO rice grain-like shape were successfully synthesized on the cellulose aerogel matrix. Also, the influence of various factors such as photocatalyst dosage, pH, initial concentration of MO, and irradiation intensity was investigated on the photocatalytic degradation rate of MO. The results revealed that the highest degradation efficiency and mineralization rate of MO were about 99.02% and 51.68%, respectively, after 90 min under UV irradiation using CA/ZnO-0.4 photocatalyst when pH = 3, C0 = 10 ppm, photocatalyst dose = 9 g L-1 under the 300 W UV light irradiation. Furthermore, the synthesized photocatalyst exhibited a considerable firmness and easily separated from an aqueous solution for reuse.
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Affiliation(s)
- Maryam Hasanpour
- Department of Polymer Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, 11155-4563, Tehran, Iran.
| | - Siamak Motahari
- Department of Polymer Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, 11155-4563, Tehran, Iran.
| | - Dengwei Jing
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Mohammad Hatami
- Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, 91775-1111, Iran.
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Liu YP, Lv YT, Guan JF, Khoso FM, Jiang XY, Chen J, Li WJ, Yu JG. Rational design of three-dimensional graphene/graphene oxide-based architectures for the efficient adsorption of contaminants from aqueous solutions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Impact of Doping and Additive Applications on Photocatalyst Textural Properties in Removing Organic Pollutants: A Review. Catalysts 2021. [DOI: 10.3390/catal11101160] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The effect of ion doping and the incorporation of additives on photocatalysts’ textural properties have been reviewed. Generally, it can be summarised that ion doping and additives have beneficial effects on photocatalytic efficiency and not all have an increase in the surface area. The excessive amount of dopants and additives will produce larger aggregated particles and also cover the mesoporous structures, thereby increasing the pore size (Pd) and pore volume (Pv). An excessive amount of dopants also leads to visible light shielding effects, thus influence photocatalytic performance. Ion doping also shows some increment in the surface areas, but it has been identified that synergistic effects of the surface area, porosity, and dopant amount contribute to the photocatalytic performance. It is therefore important to understand the effect of doping and the application of additives on the textural properties of photocatalysts, thus, their performance. This review will provide an insight into the development of photocatalyst with better performance for wastewater treatment applications.
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Liu J, Wei X, Sun W, Guan X, Zheng X, Li J. Fabrication of S-scheme CdS-g-C 3N 4-graphene aerogel heterojunction for enhanced visible light driven photocatalysis. ENVIRONMENTAL RESEARCH 2021; 197:111136. [PMID: 33839114 DOI: 10.1016/j.envres.2021.111136] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/25/2021] [Accepted: 04/02/2021] [Indexed: 05/19/2023]
Abstract
Constructing S-scheme heterojunction photocatalysts reveals a greatly improved separation efficiency of photogenerated carriers and enhanced harvesting ability of solar energy in photocatalytic field. Herein, a ternary CdS-g-C3N4-GA heterojunction has been fabricated by a facile ultrasound strategy, which behaved as a S-scheme heterojunction with an intimate interface formed, and GA played as an electronic transportation platform to promote the separation of photo-induced charge carriers, which was certified through photoelectrochemical techniques. Density functional theory calculations revealed that the different component in ternary CdS-g-C3N4-GA heterojunction demonstrated an obvious difference of work function, resulting in the charge transfer from CdS to g-C3N4 through GA with S-scheme principle. In the optimized conditions, the S-scheme CdS-g-C3N4-GA heterojunction not only displayed greatly enhanced photocatalytic performances for degradation of dye and antibiotic wastewater, but also improved photocatalytic H2 production activity. In addition, the photocatalytic mechanism and driving force of charge transfer and separation in S-scheme CdS-g-C3N4-GA heterojunction were studied. This study offers a feasible strategy to construct a ternary S-scheme heterojunction for environmental and energy photocatalysis.
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Affiliation(s)
- Jianhui Liu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiangnan Wei
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Wanqing Sun
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Xinxin Guan
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.
| | - Xiucheng Zheng
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Jun Li
- Henan Institutes of Advanced Technology, Zhengzhou University, Zhengzhou, 450052, China.
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Guo Z, Feng Y, Zhang C, Huang G, Chi J, Yao Q, Zhang G, Chen X. Three dimensional graphene materials doped with heteroatoms for extraction and adsorption of environmental pollutants in wastewater. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, TOXICOLOGY AND CARCINOGENESIS 2021; 39:17-43. [PMID: 33554725 DOI: 10.1080/26896583.2020.1863725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Environmental pollution by heavy metal ions, organic pollutants, oils, pesticides or dyes is a ubiquitous problem adversely affecting human health and environmental ecology. Development and application novel adsorbents in full-scale treatment systems with effectiveness properties could effective ways to facilitate the extraction and adsorption of environment pollutants from wastewater. Graphene materials have drawn much attention due to their extraordinary electron mobilities, high surface areas, good thermal conductivities, and excellent mechanical properties. Three-dimensional graphene materials can provide the inherent advantages of 2D graphene sheets and exhibit micro/nanoporous structures, increased specific surface areas, high electron conductivities, fast mass transport kinetics, and strong mechanical strength. Potential applications for 3D graphene materials include environmental remediation, chemical and biological sensing, catalysis, and super capacitors. Recent advances in the applications of 3D functionalized graphene materials (3D FGMs) doped with heteroatoms for the extraction and adsorption of environmental pollutants in wastewater are summarized in this review.
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Affiliation(s)
- Zhiyong Guo
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
- Key Laboratory of environmental monitoring, Universities of Fujian Province, Fujian Province, China
| | - Yufeng Feng
- The First Affiliated Hospital of Xiamen University, Xiamen University, Xiamen, China
| | - Chen Zhang
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
| | - Guihua Huang
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
| | - Jinxin Chi
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
| | - Qiuhong Yao
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
| | - Guofeng Zhang
- Baotai Biological Technology Co. Ltd of Xiamen, Xiamen, China
| | - Xi Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China
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Li J, Lu T, Zhao Z, Xu R, Li Y, Huang Y, Yang C, Zhang S, Tang Y. Preparation of heterostructured ternary Cd/CdS/BiOCl photocatalysts for enhanced visible-light photocatalytic degradation of organic pollutants in wastewater. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108236] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Hasanpour M, Hatami M. Photocatalytic performance of aerogels for organic dyes removal from wastewaters: Review study. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113094] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Zhang JY, Zhang SH, Li J, Zheng XC, Guan XX. Constructing of 3D graphene aerogel-g-C3N4 metal-free heterojunctions with superior purification efficiency for organic dyes. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113242] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhang Y, Shao Q, Chen C, Jiang H, Su F, Hu Q, Guo Z. Microwave-hydrothermal synthesis of beta-bismuth (III) oxide nanopowders and their enhanced photocatalytic properties. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.05.068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Integration of CdS particles into sodium alginate aerogel with enhanced photocatalytic performance. Int J Biol Macromol 2019; 141:1111-1117. [DOI: 10.1016/j.ijbiomac.2019.09.064] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/28/2019] [Accepted: 09/09/2019] [Indexed: 02/07/2023]
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Efficient and selective removal of congo red by mesoporous amino-modified MIL-101(Cr) nanoadsorbents. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.08.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Saravanakumar K, Hu X, Vijayakumar S, Wang MH. Statistical Optimization to Augment the Photocatalytic Reduction of Brilliant Blue G-250 Using the Biogenic Semiconductor Nanorods: An Ecosafety Approach. J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01678-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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