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Ryu HD, Han H, Park TJ, Park JH, Kim YS. New findings on the occurrence, removal, and risk assessment of nonylphenol and octylphenol in industrial wastewater treatment plants in Korea. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132615. [PMID: 37757560 DOI: 10.1016/j.jhazmat.2023.132615] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 08/22/2023] [Accepted: 09/21/2023] [Indexed: 09/29/2023]
Abstract
Nonylphenol (NP) and octylphenol (OP), extensively used in industries, can disrupt the human endocrine system and cause significant ecological toxicity. Therefore, in this study, we aimed to reveal the occurrence and removal characteristics of NP and OP in 30 industrial wastewater treatment plants (IWWTPs). Specifically, this study focused on 13 NP isomers that have not been previously reported. Additionally, the potential environmental risk of NP and OP discharged from IWWTPs was assessed using a minimum dilution factor (MDF), proposed for the first time in this study. We showed that the concentration and proportion of the isomer NP11 were higher than those of the other isomers in the IWWTP influents and effluents. We also identified an activated sludge-activated carbon adsorption process suitable for removing NP and OP. Finally, we proposed the MDF value of 11 for the potential environmental risk assessment of NP and OP, revealing that OP poses a higher risk than NP when discharged into surface water. These findings underscore the importance of focusing on the isomer NP11 and OP in IWWTPs.
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Affiliation(s)
- Hong-Duck Ryu
- Water Environment Research Department, National Institute of Environmental Research, Hwangyoung-ro 42, Seo-gu, Incheon 22689, the Republic of Korea.
| | - Hyeyeol Han
- Water Environment Research Department, National Institute of Environmental Research, Hwangyoung-ro 42, Seo-gu, Incheon 22689, the Republic of Korea
| | - Tae-Jin Park
- Water Environment Research Department, National Institute of Environmental Research, Hwangyoung-ro 42, Seo-gu, Incheon 22689, the Republic of Korea
| | - Ji-Hyoung Park
- Water Environment Research Department, National Institute of Environmental Research, Hwangyoung-ro 42, Seo-gu, Incheon 22689, the Republic of Korea
| | - Yong Seok Kim
- Water Environment Research Department, National Institute of Environmental Research, Hwangyoung-ro 42, Seo-gu, Incheon 22689, the Republic of Korea
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2
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Zhang X, Wu Z, Wu Y, Giwa AS, Huang S, Niu L. Visible-light-driven simultaneous decontamination of multi-antibiotics by facile synthesized BiOCl loaded food wastes biochar. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120683. [PMID: 36400142 DOI: 10.1016/j.envpol.2022.120683] [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: 09/17/2022] [Revised: 10/29/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Environmental dissemination caused by widespread use of antibiotics has been regarded as a possible hazard to aquatic ecosystem and human health. The increasing misgivings make it imperative to develop a novel catalyst with remarkable visible-light-driven activity to remove antibiotics, especially for their simultaneous decontamination. Herein, C/BiOCl composites were successfully prepared by decorating BiOCl nanosheets on food wastes biochar (C) by a simple hydrolysis strategy. Not only the binary system of tetracycline antibiotics, but also the ternary mixture could be simultaneously photodegraded over 25% C/BiOCl within 15 min irradiation. The improved photocatalytic activities could be ascribed to the introduction of biochar, endowing increased surface area, enhanced separation of photo-generated charge carriers, and better light absorption. The as-prepared 25% C/BiOCl also demonstrated satisfactory stability and positive removal effect in actual water samples. The present work provides new insights into the development of biochar-based photocatalysts for simultaneous degradation of multiple antibiotics.
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Affiliation(s)
- Xiaoqian Zhang
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, PR China
| | - Zhipeng Wu
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Yixiao Wu
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Abdulmoseen Segun Giwa
- School of Human Settlements and Civil Engineering, Nanchang Institute of Science and Technology, Nanchang, 330108, PR China
| | - Shaobin Huang
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China.
| | - Lishan Niu
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China
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3
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Synthesis of Ce0.1La0.9MnO3 Perovskite for Degradation of Endocrine-Disrupting Chemicals under Visible Photons. Catalysts 2022. [DOI: 10.3390/catal12101258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The UN Environmental Protection Agency has recognized 4-n-Nonylphenol (NP) and bisphenol A (BPA) as among the most hazardous chemicals, and it is essential to minimize their concentrations in the wastewater stream. These industrial chemicals have been witnessed to cause endocrine disruption. This report describes the straightforward hydrothermal approach adopted to produce Ce0.1La0.9MnO3 (CLMO) perovskite’s structure. Several physiochemical characterization approaches were performed to understand the Ce0.1La0.9MnO3 (CLMO) perovskite crystalline phase, element composition, optical properties, microscopic topography, and molecular oxidation state. Here, applying visible photon irradiation, the photocatalytic capability of these CLMO nanostructures was evaluated for the elimination of NP and BPA contaminants. To optimize the reaction kinetics, the photodegradation of NP and BPA pollutants on CLMO, perovskite was studied as a specification of pH, catalyst dosage, and initial pollutant concentration. Correspondingly, 92% and 94% of NP and BPA pollutants are degraded over CLMO surfaces within 120 and 240 min, respectively. Since NP and BPA pollutants have apparent rate constants of 0.0226 min−1 and 0.0278 min−1, respectively, they can be satisfactorily fitted by pseudo-first-order kinetics. The decomposition of NP and BPA contaminants is further evidenced by performing FT-IR analysis. Owing to its outstanding photocatalytic execution and simplistic separation, these outcomes suggest that CLMO is an intriguing catalyst for the efficacious removal of NP and BPA toxicants from the aqueous phase. This is pertinent for the treatment of endocrine-disrupting substances in bioremediation.
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4
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Liu B, Liu L, Deng B, Huang C, Zhu J, Liang L, He X, Wei Y, Qin C, Liang C, Liu S, Yao S. Application and prospect of organic acid pretreatment in lignocellulosic biomass separation: A review. Int J Biol Macromol 2022; 222:1400-1413. [PMID: 36195224 DOI: 10.1016/j.ijbiomac.2022.09.270] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/20/2022] [Accepted: 09/28/2022] [Indexed: 11/28/2022]
Abstract
As a clean and efficient method of lignocellulosic biomass separation, organic acid pretreatment has attracted extensive research. Hemicellulose or lignin is selectively isolated and the cellulose structure is preserved. Effective fractionation of lignocellulosic biomass is achieved. The separation characteristics of hemicellulose or lignin by different organic acids were summarized. The organic acids of hemicellulose were separated into hydrogen ionized, autocatalytic and α-hydroxy acids according to the separation mechanism. The separation of lignin depends on the dissolution mechanism and spatial effect of organic acids. In addition, the challenges and prospects of organic acid pretreatment were analyzed. The separation of hemicellulose and enzymatic hydrolysis of cellulose were significantly affected by the polycondensation of lignin, which is effectively inhibited by the addition of green additives such as ketones or alcohols. Lignin separation was improved by developing a deep eutectic solvent treatment based on organic acid pretreatment. This work provides support for efficient cleaning of carbohydrate polymers and lignin to promote global carbon neutrality.
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Affiliation(s)
- Baojie Liu
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Lu Liu
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Baojuan Deng
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Caoxing Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, PR China
| | - Jiatian Zhu
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Linlin Liang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Xinliang He
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Yuxin Wei
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Chengrong Qin
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China.
| | - Chen Liang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Shijie Liu
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry,1 Forestry Drive, Syracuse, NY 13210, United States
| | - Shuangquan Yao
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China.
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5
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Liu Y, Cun F, Tian D, Zhou P, Yuan Y, Xiong Z, He C, Du Y, Pan Z, Lai B. Fast photo-Fenton-like oxidation in bismuth catalysis: A novel Fe(III) self-doped sodium bismuthate nanosheet. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:128975. [PMID: 35468394 DOI: 10.1016/j.jhazmat.2022.128975] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/28/2022] [Accepted: 04/17/2022] [Indexed: 06/14/2023]
Abstract
Sodium bismuthate dihydrate (NaBiO3.2 H2O, NBH) nanosheets were successfully prepared in this study using the persulfate oil bath oxidation method. Benefited from the unique layered structure of NBH, the Fe(III) as a variable valence metal ion was explored for enhancing NBH activation of peroxymonosulfate (PMS) to degrade levofloxacin (LVF) in the visible-light catalytic system. Based on results of the reactive oxygen species (ROS) quenching experiments and electron paramagnetic resonance (EPR) analysis, singlet oxygen (1O2) and superoxide radical (O2·-) were identified as the main ROS. The morphology, chemical structure, and optical properties of NBH were analyzed using various characterization methods. It was confirmed that Fe(III) embedded in the NBH via the ion exchange with Na, resulting in lattice oxygen vacancies on the surface of the NBH, after the formation of oxygen defect sites, reacts with PMS in the solution to produce active oxygen species with oxidizing efficiency. This study expands the technological application of NBH in the catalytic oxidation of variable valence metals, which are essential for the removal of fluoroquinolone antibiotics.
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Affiliation(s)
- Yang Liu
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, Chengdu 610041, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Fenxian Cun
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, Chengdu 610041, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Dongqi Tian
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin 644044, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Peng Zhou
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin 644044, China; School of Environment, Tsinghua University, Beijing 100084, China.
| | - Yue Yuan
- School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Zhaokun Xiong
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, Chengdu 610041, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Chuanshu He
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Ye Du
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Zhicheng Pan
- Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, Chengdu 610041, China; School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Bo Lai
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin 644044, China; School of Environment, Tsinghua University, Beijing 100084, China.
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6
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Li J, Wu Y, Bai H, Wen X, Zhou Q, Yuan Y, Liu Y, Chen C, Guo L. Highly efficient adsorption and mechanism of alkylphenols on magnetic reduced graphene oxide. CHEMOSPHERE 2021; 283:131232. [PMID: 34147978 DOI: 10.1016/j.chemosphere.2021.131232] [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: 03/30/2021] [Revised: 05/29/2021] [Accepted: 06/12/2021] [Indexed: 06/12/2023]
Abstract
The influence of alkylphenols to environment cannot be ignored, as they are common product from chemical industries and potential threat to human health. Some alkylphenols are listed as persistent toxic substances (PTS) by the United Nations Environment Programme (UNEP). In this study, the optimized magnetic reduced graphene oxide (MrGO) was synthesized by a facile solvothermal method, and investigated for adsorption of three typical alkylphenols. In neutral condition, MrGO showed extremely high adsorption capacity of three typical alkylphenols, 4-heptylphenol (4-HP), 4-tert-octylphenol (4-OP), and 4-nonylphenol (4-NP), which could reach 938.9 mg g-1 (40 °C), 987.8 mg g-1 (40 °C), and 989.7 mg g-1 (20 °C), respectively. This study revealed that the adsorption process was a heterogeneous multi-layer physical adsorption, and the adsorption rates were related to the number of unoccupied vacancies on the adsorbent surface. From batch experiments and density functional theory (DFT) calculations, the main adsorption interactions between MrGO and alkylphenols were deduced to be π-π, hydrogen-bond, and hydrophobic interactions. What's more, the different affinities of MrGO towards different targets were further distinguished and explained in detail. The wonderful stability and recyclability of MrGO made it a promising cost-effective remediation candidate.
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Affiliation(s)
- Jing Li
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing, 102249, China; School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yalin Wu
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing, 102249, China; Beijing Municipal Research Institute of Environmental Protection, Beijing, 100037, China
| | - Huahua Bai
- Beijing Municipal Research Institute of Environmental Protection, Beijing, 100037, China
| | - Xiangli Wen
- State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084, China
| | - Qingxiang Zhou
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing, 102249, China.
| | - Yongyong Yuan
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing, 102249, China
| | - Yongli Liu
- School of Environment, Henan Normal University, Xinxiang, 453007, Henan, China
| | - Chunmao Chen
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing, 102249, China.
| | - Libing Guo
- Institute of Chemistry, Henan Academy of Sciences, 56 Hongzhuan Road, Jinshui District, Zhengzhou, Henan, 450002, China
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7
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Wang M, Tan G, Feng S, Yin L, Wang Y, Zhang B, Lv L, Ren H. Construction of Ag/NaBiO 3 with dual active sites for photocatalytic NO deep oxidation and long-lasting organic pollutants degradation in the dark. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125877. [PMID: 34492817 DOI: 10.1016/j.jhazmat.2021.125877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/23/2021] [Accepted: 04/09/2021] [Indexed: 06/13/2023]
Abstract
Ag/NaBiO3 with dual active sites and high capacitance was prepared by the photo-deposition method. Upon light illumination, the reduction of Ag+ to Ag, the introduction of oxygen vacancies, and the electron storage in Ag nanoparticles simultaneously happened. NO, and O2 adsorbed and activated at Ag site and oxygen vacancy site, respectively, to produce active ON* and •O2- radical species. The increased concentrations of the active oxygen species and the pre-oxidation of NO resulted in the enhanced NO removal with inhibited production of NO2. Moreover, the high capacitance of Ag and the continuous charge transfer from defective NaBiO3 to Ag offered the enhanced and long-lasting dark catalytic activity of the Ag/NaBiO3. The stored electrons in Ag were directly released in dark to decompose methyl orange and/or tetracycline. This work provides a novel idea of designing and preparing a multifunctional catalytic material for environmental cleaning.
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Affiliation(s)
- Min Wang
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Guoqiang Tan
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China.
| | - Shuaijun Feng
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Lixiong Yin
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China.
| | - Yong Wang
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Bixin Zhang
- Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Long Lv
- College of Cryptography Engineering, Engineering University of PAP, Xi'an 710086, China
| | - Huijun Ren
- School of Arts and Sciences, Shaanxi University of Science & Technology, Xi'an 710021, China
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8
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Huang X, Nan Z. Synergetic adsorption and photo-Fenton degradation of methylene blue by ZnFe 2O 4/SiO 2 magnetic double-mesoporous-shelled hollow spheres. ENVIRONMENTAL TECHNOLOGY 2021; 42:3218-3230. [PMID: 32008479 DOI: 10.1080/09593330.2020.1725142] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 01/26/2020] [Indexed: 06/10/2023]
Abstract
Adsorption and Fenton technologies have been widely employed to deal with wastewater. ZnFe2O4/SiO2 magnetic double-mesoporous-shelled hollow spheres (MDSHSs) were feasibly synthesized by a solvothermal method. The as-synthesized MDSHSs show excellent adsorption and selectivity for methylene blue (MB), which it took about only 1 min to reach the adsorption equilibrium. About 50% MB was removed by adsorption, and other 50% MB was degraded under further photo-Fenton process. Effects of experimental conditions on the adsorption and photo-Fenton process were investigated. The mechanisms of MDSHSs formation and photo-Fenton process were proposed. Total organic carbon (TOC) reduction reached as high as 90% with 60 mg/L of MB for 90 min. The experimental results indicated that MDSHSs exhibit a remarkable adsorption and catalytic activity for photo-Fenton process in a wide pH range of 3.3-11.0. Simultaneously, the composite shows an excellent stability and reusability.
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Affiliation(s)
- Xing Huang
- College of Chemistry and Chemical Engineering, Yang Zhou University, Yangzhou, People's Republic of China
| | - Zhaodong Nan
- College of Chemistry and Chemical Engineering, Yang Zhou University, Yangzhou, People's Republic of China
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9
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Wu Y, Zhao X, Huang S, Li Y, Zhang X, Zeng G, Niu L, Ling Y, Zhang Y. Facile construction of 2D g-C 3N 4 supported nanoflower-like NaBiO 3 with direct Z-scheme heterojunctions and insight into its photocatalytic degradation of tetracycline. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125547. [PMID: 33676258 DOI: 10.1016/j.jhazmat.2021.125547] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 02/10/2021] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
Photocatalytic oxidation using solar energy is a promising green technology to degrade antibiotic contaminants. Herein, a 2D g-C3N4 supported nanoflower-like NaBiO3 with direct Z-scheme heterojunction was synthesized via a facile hydrothermal approach, and the photocatalytic performance of g-C3N4/NaBiO3 was remarkable better than that of g-C3N4 and NaBiO3 for tetracycline degradation under visible light. Photoinduced electrons accumulated on the conduction band of g-C3N4 and holes gathered on the valence band of NaBiO3, which was more suitable for generating superoxide and hydroxyl radicals. Meanwhile, the built-in electric field between g-C3N4 and NaBiO3 was proved by their different work functions based on DFT calculations, which enhanced the charges separation. The formed radicals were determined by ESR, and their role in the degradation of tetracycline was examined by the active species trapping test. Moreover, the sites attacked by free radicals and degradation pathways for tetracycline were inferred by the results of Gaussian 09 program and HPLC-MS. The effects of water matrix and three other organic contaminants was further studied for actual use evaluation. Importantly, the prepared g-C3N4/NaBiO3 showed stable photodegradation activity for eight cycles. This work not only provides a promising photocatalyst, but also gets insight into the photocatalytic removal of tetracycline.
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Affiliation(s)
- Yixiao Wu
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China; Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Xuesong Zhao
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, Guangdong, China
| | - Shaobin Huang
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China.
| | - Yihao Li
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
| | - Xiaoqian Zhang
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
| | - Gongchang Zeng
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
| | - Lishan Niu
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
| | - Yu Ling
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
| | - Yongqing Zhang
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
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10
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Guo X, Ai S, Yang D, Zhao L, Ding H. Synergistic photocatalytic and Fenton-like degradation of organic contaminants using peroxymonosulfate activated by CoFe 2O 4@ g-C 3N 4 composite. ENVIRONMENTAL TECHNOLOGY 2021; 42:2240-2253. [PMID: 31765278 DOI: 10.1080/09593330.2019.1697378] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 11/17/2019] [Indexed: 05/26/2023]
Abstract
The integration of two different advanced oxidation processes can not only avoid their individual shortcomings but also utilize the synergistic effects between them. Herein, CoFe2O4 modified g-C3N4 composite (CoFe2O4@g-C3N4) was synthesized and used for building a novel coupled system, in which two processes of visible light-activated photocatalysis and sulfate radical-based Fenton-like oxidation have been combined together to provide a synergistic reaction path for the removal of rhodamine B. The coupled system exhibited a drastically enhanced catalytic efficiency compared with the photocatalytic or Fenton-like process alone. It also showed a significantly enhanced catalytic activity compared with g-C3N4, CoFe2O4 or their simple mixture. The improved catalytic performance can be ascribed to the efficient separation of photogenerated carriers as well as more available catalytic reactive sites for peroxymonosulfate (PMS) activation due to the synergistic effects between the photocatalytic and Fenton-like processes. In 30 min, 96% RhB was degraded using PMS activated by a CoFe2O4@g-C3N4 composite with 3% CoFe2O4 loading under visible light irradiation, and the synergistic index in such system reached as high as 3.07. Such system can be used at a wide pH range of 3.0-10.0. The composite also showed good stability for its practical applications.
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Affiliation(s)
- Xu Guo
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, People's Republic of China
| | - Shasha Ai
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, People's Republic of China
| | - Dan Yang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, People's Republic of China
| | - Lei Zhao
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, People's Republic of China
| | - Hanming Ding
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, People's Republic of China
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