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Sanei A, Dashtian K, Yousefi Seyf J, Seidi F, Kolvari E. Biomass derived reduced-graphene-oxide supported α-Fe 2O 3/ZnO S-scheme heterostructure: Robust photocatalytic wastewater remediation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 332:117377. [PMID: 36739771 DOI: 10.1016/j.jenvman.2023.117377] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/12/2023] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
The emergence of new diseases and the unplanned industrialization of cities have led to new diseases and the subsequent use of antibiotics. Hence the remediation of wastewater containing antibiotics and their severe pollution has raised serious concerns in recent years. Herein coral-shaped α-Fe2O3/ZnO/reduced graphene oxide (r-GO)-like carbon heterojunction in-situ were prepared from basil seed as a sustainable biomass resource and applied for the photodegradation of the oxytetracycline (OTC) as a typical antibiotic in a helical plug flow photoreactor (HPFPR) via persulfate activation under visible light irradiation. Spectroscopy and electrochemical results confirmed the tunable band structure and quick light absorption, superior charge separation and transfer, satisfactory charge carrier lifetime, and long-term stability for the prepared photocatalyst. The 98% degradation efficiency was achieved for OTC within 90 min fitted by a first-order kinetic model with the rate constant of 0.1248 min-1. The finding proves that HPFPR exhibited a higher degradation rate of OTC by 2.3 times compared to the batch reactor. The 3D computational fluid dynamics (CFD) model confirmed the outstanding performance of the HPFPR. Scavenging experiments integrated with mott Schottky and DRS results revealed that rGO intensifies the S-scheme charge carrier transfer and built-in electric field and reduces the recombination. Finally, this work has substantial potential for the in-situ synthesis of environmental-friendly and large-scale metal oxide heterojunctions in natural carbon supports as well as scale-up and gives novel insights from molecular and engineering points of view into the wastewater remediation processes and clean water production.
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Affiliation(s)
- Armin Sanei
- Department of Chemistry, Semnan University, P.O. Box 35131-19111, Semnan, Iran
| | - Kheibar Dashtian
- Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Jaber Yousefi Seyf
- Department of Chemical Engineering, Hamedan University of Technology, Hamedan, Iran
| | - Farzad Seidi
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, 210037, China
| | - Eskandar Kolvari
- Department of Chemistry, Semnan University, P.O. Box 35131-19111, Semnan, Iran.
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Visible light-responsive vanadium-based metal–organic framework supported pepsin with high oxidase mimic activity for food spoilage monitoring. Mikrochim Acta 2022; 189:448. [DOI: 10.1007/s00604-022-05554-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 10/28/2022] [Indexed: 11/19/2022]
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Xiao W, Wang L, Wei X, Li J. Chitosan-based molecularly imprinted photoelectric sensor with ZnO/Bi 2O 3/Bi 2S 3 sensing layer for thiamethoxam determination. Mikrochim Acta 2022; 189:247. [PMID: 35676546 DOI: 10.1007/s00604-022-05326-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/30/2022] [Indexed: 10/18/2022]
Abstract
A molecularly imprinted photoelectrochemical sensor with high sensitivity and stable structure was constructed and applied to detect thiamethoxam pesticide. ZnO/Bi2O3/Bi2S3 heterojunction photoelectric material was formed on the fluorine-doped tin oxide (FTO) electrode by seed layer growth, drip coating, and in situ ion exchange. A chitosan-imprinted polymer membrane was prepared using chitosan as the functional monomer, glutaraldehyde as the cross-linking agent, and thiamethoxam as the template molecule. The photoelectric material was characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive x-ray spectroscopy analyses. The electron transfer mechanism of Z-type heterojunction was verified by ultraviolet-visible curve and Mott-Schottky curve. When thiamethoxam was re-adsorbed on the imprinted membrane, the current recorded at 0 V (vs. Ag/AgCl) was reduced because the thiamethoxam molecule blocked the electron transfer. The molecularly imprinted sensor exhibited a linear relationship to thiamethoxam concentration in the range from 7.0 × 10-13 mol/L to 7.0 × 10-10 mol/L and the detection limit was 3.32 × 10-13 mol/L, which is lower than the values reported by other detection methods. Most pesticides, such as propoxur and isoprocarband carbaryl, do not interfere with the determination. The sensor also showed good practicability and suitability for the determination of trace thiamethoxam in environmental water and soil leaching solutions, with a recovery of 99.6-102.1% (RSD < 3.74%). A novel molecularly imprinted photoelectrochemical (MI-PEC) sensor with high sensitivity and selectivity for the determination of thiamethoxam (TMX) was developed. A Z-type heterojunction ZnO/Bi2O3/Bi2S3 photoelectric material was synthesized for the first time. The MI-PEC sensor was prepared with ZnO/Bi2O3/Bi2S3 as the sensitive material and MI membrane as the recognition element. The sensor exhibits an extremely sensitive response to thiamethoxam with a detection limit of 3.32 × 10-13 mol/L due to the excellent photoelectrochemical properties of ZnO/Bi2O3/Bi2S3.
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Affiliation(s)
- Wei Xiao
- College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi, 541004, China
| | - Liangfeng Wang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi, 541004, China
| | - Xiaoping Wei
- College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi, 541004, China. .,Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, Guangxi, 541004, China.
| | - Jianping Li
- College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi, 541004, China. .,Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, Guangxi, 541004, China.
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Dashtian K, Hajati S, Ghaedi M. Molecular Imprinted Poly(2,5-benzimidazole)-Modified VO 2-CuWO 4 Homotype Heterojunction for Photoelectrochemical Dopamine Sensing. Anal Chem 2022; 94:6781-6790. [PMID: 35467838 DOI: 10.1021/acs.analchem.2c00485] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A photoactive molecularly imprinted poly(2,5-benzimidazole)-modified vanadium dioxide-cupric tungstate (VO2-CuWO4) as an efficient photosensitive n-n type-II heterojunction thin film was electrochemically deposited on Ti substrate for the selective and robust photoelectrochemical (PEC) bioanalysis of dopamine (DA). The optical absorption of n-VO2/n-CuWO4 type-II heterojunction was capably broadened toward the visible region, which permitted superior light-harvesting and robust carriers generation, separation, and transfer processes significantly enhancing the anodic photocurrent, as confirmed by a series of PEC analyses. Findings revealed that the as-prepared label-free MIP-PEC sensor can quantitatively monitor DA in a linear range of 1 nM to 200 μM with a detection limit of 0.15 nM. This MIP-PEC sensor showed robust selectivity under conditions with high concentrations of interfering substances, which can be recovered in the real samples of urine, cocoa chocolate, and diluted yogurt, indicating its promising potential applications in biological and food samples. This work not only featured the use of photoelectrically active MIP/VO2-CuWO4 for PEC detection of DA, but also provided a new horizon for the design and implementation of functional polymers/metal oxides heterojunction materials in the field of PEC sensors and biosensors.
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Affiliation(s)
- Kheibar Dashtian
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
| | - Shaaker Hajati
- Department of Semiconductors, Materials and Energy Research Center (MERC), Tehran 31787-316, Iran
| | - Mehrorang Ghaedi
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
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Lan D, Rong Y, Hou Y, Yan Y, Yu Z, Tu L, Chen S, Wei J, Li Z. N, S co-doped carbon quantum dots anchoring on copper-vacancy-rich Cu nanowires/Cu foam as the cathode in microbial fuel cells: Role of C-S-Cu active site. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 805:150340. [PMID: 34818762 DOI: 10.1016/j.scitotenv.2021.150340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/26/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023]
Abstract
Oxygen reduction reaction (ORR) electrocatalysts have been considered as one of the key components in microbial fuel cells (MFCs). Heteroatom-doped carbon quantum dots (CQDs) derived from biomass have attracted wide attention due to their rich functional groups, excellent properties, and environmental friendliness. Herein, orange-peels-derived N, S co-doped carbon quantum dots (N, S-CQDs) are in-situ anchored on copper-vacancy-rich Cu nanowires/Cu foam (V-Cu NWs/CF), obtaining the N, S-CQDs/Cu2O-Cu NWs, to catalyze ORR in MFCs. The interaction between N, S-CQDs and V-Cu NWs/CF from the N, S-CQDs/Cu2O-Cu NWs is bridged by the C-S-Cu bond, which is demonstrated to be the active site towards ORR and plays an important role in promoting electron transfer by in-situ Raman and X-ray photoelectron spectroscopy characterizations. In MFCs, the maximum power density (924.5 ± 32.5 mW·m-2) of N, S-CQDs/Cu2O-Cu NWs is 1.34 times that of Pt/C (686.5 ± 28.0 mW·m-2), and its long-term stability also outperforms the Pt/C. This study provides inspiration for synthesis of efficient ORR electrocatalysts with metal-ligand active sites creating by heteroatom-doped CQDs and cationic-metal-vacancy-rich materials.
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Affiliation(s)
- Danquan Lan
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Yiyuan Rong
- Guangxi Open University, Nanning 530004, China
| | - Yanping Hou
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China; Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Nanning 530004, China.
| | - Yimin Yan
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Zebin Yu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China; Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Nanning 530004, China
| | - Lingli Tu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Shuo Chen
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Jingwen Wei
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Zhihong Li
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
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