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Dong C, Chen Q, Deng X, Jiang L, Tan H, Zhou Y, Chen J, Wang R. Enhanced Photocatalytic Hydrogen Evolution of In 2S 3 by Decorating In 2O 3 with Rich Oxygen Vacancies. Inorg Chem 2024; 63:11125-11134. [PMID: 38833320 DOI: 10.1021/acs.inorgchem.4c00720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
The hydrogen (H2) evolution rates of photocatalysts suffer from weak oxidation and reduction ability and low photogenerated charge carrier separation efficiency. Herein, by combining band-gap structure optimization and vacancy modulation through a one-step hydrothermal method, In2O3 containing oxygen vacancy (Ov/In2O3) is simply introduced into In2S3 to promote photocatalytic hydrogen evolution. Specifically, the change in the sulfur source ratio can induce the coexistence of Ov/In2O3 and In2S3 in a high-temperature hydrothermal process. Under light irradiation, In2S3@Ov/In2O3-0.1 nanosheets hold a remarkable average H2 evolution rate up to 4.04 mmol g-1 h-1, which is 32.14, 11.91, and 2.25-fold better than those of pristine In2S3, In2S3@Ov/In2O3-0.02, and In2S3@Ov/In2O3-0.25 nanosheets, respectively. The ultraviolet-visible (UV-vis) diffuse reflectance and photoluminescence (PL) spectra reveal that the formation of Ov/In2O3 in In2S3 optimizes the band-gap structure and accelerates the migration of the photogenerated charge carrier of In2S3@Ov/In2O3-x nanosheets, respectively. Both the enhancement of oxidation and reduction ability and photogenerated charge carrier separation ability are responsible for the remarkable improvement in photocatalytic H2 evolution performance. This work provides a new strategy to prepare a composite of metal sulfide and metal oxide through a one-step hydrothermal method.
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Affiliation(s)
- Changxue Dong
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Qiuyan Chen
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Xin Deng
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Lan Jiang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Han Tan
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Yufeng Zhou
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Jinwei Chen
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Ruilin Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
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García-López EI, Aoun N, Marcì G. An Overview of the Sustainable Depolymerization/Degradation of Polypropylene Microplastics by Advanced Oxidation Technologies. Molecules 2024; 29:2816. [PMID: 38930879 PMCID: PMC11207091 DOI: 10.3390/molecules29122816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 06/03/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
Plastics have become indispensable in modern society; however, the proliferation of their waste has become a problem that can no longer be ignored as most plastics are not biodegradable. Depolymerization/degradation through sustainable processes in the context of the circular economy are urgent issues. The presence of multiple types of plastic materials makes it necessary to study the specific characteristics of each material. This mini-review aims to provide an overview of technological approaches and their performance for the depolymerization and/or degradation of one of the most widespread plastic materials, polypropylene (PP). The state of the art is presented, describing the most relevant technologies focusing on advanced oxidation technologies (AOT) and the results obtained so far for some of the approaches, such as ozonation, sonochemistry, or photocatalysis, with the final aim of making more sustainable the PP depolymerization/degradation process.
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Affiliation(s)
- Elisa I. García-López
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, 90128 Palermo, Italy;
| | - Narimene Aoun
- Department of Engineering (DI), University of Palermo, Viale delle Scienze, 90128 Palermo, Italy;
| | - Giuseppe Marcì
- Department of Engineering (DI), University of Palermo, Viale delle Scienze, 90128 Palermo, Italy;
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Yang J, Li Z, Xu Q, Liu W, Gao S, Qin P, Chen Z, Wang A. Towards carbon neutrality: Sustainable recycling and upcycling strategies and mechanisms for polyethylene terephthalate via biotic/abiotic pathways. ECO-ENVIRONMENT & HEALTH 2024; 3:117-130. [PMID: 38638172 PMCID: PMC11021832 DOI: 10.1016/j.eehl.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 01/09/2024] [Accepted: 01/25/2024] [Indexed: 04/20/2024]
Abstract
Polyethylene terephthalate (PET), one of the most ubiquitous engineering plastics, presents both environmental challenges and opportunities for carbon neutrality and a circular economy. This review comprehensively addressed the latest developments in biotic and abiotic approaches for PET recycling/upcycling. Biotically, microbial depolymerization of PET, along with the biosynthesis of reclaimed monomers [terephthalic acid (TPA), ethylene glycol (EG)] to value-added products, presents an alternative for managing PET waste and enables CO2 reduction. Abiotically, thermal treatments (i.e., hydrolysis, glycolysis, methanolysis, etc.) and photo/electrocatalysis, enabled by catalysis advances, can depolymerize or convert PET/PET monomers in a more flexible, simple, fast, and controllable manner. Tandem abiotic/biotic catalysis offers great potential for PET upcycling to generate commodity chemicals and alternative materials, ideally at lower energy inputs, greenhouse gas emissions, and costs, compared to virgin polymer fabrication. Remarkably, over 25 types of upgraded PET products (e.g., adipic acid, muconic acid, catechol, vanillin, and glycolic acid, etc.) have been identified, underscoring the potential of PET upcycling in diverse applications. Efforts can be made to develop chemo-catalytic depolymerization of PET, improve microbial depolymerization of PET (e.g., hydrolysis efficiency, enzymatic activity, thermal and pH level stability, etc.), as well as identify new microorganisms or hydrolases capable of degrading PET through computational and machine learning algorithms. Consequently, this review provides a roadmap for advancing PET recycling and upcycling technologies, which hold the potential to shape the future of PET waste management and contribute to the preservation of our ecosystems.
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Affiliation(s)
- Jiaqi Yang
- School of Civil & Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Zhiling Li
- State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qiongying Xu
- School of Civil & Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Wenzong Liu
- School of Civil & Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Shuhong Gao
- School of Civil & Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Peiwu Qin
- Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
- Tsinghua-Berkeley Shenzhen Institute, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Zhenglin Chen
- Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
- Tsinghua-Berkeley Shenzhen Institute, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Aijie Wang
- School of Civil & Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
- State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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Li L, Kuang K, Zheng X, Wang J, Ren W, Ge J, Zhang S, Chen S. Design of p-n heterojunction between CoWO 4 and Zn-defective Zn 0.3Cd 0.7S for efficient photocatalytic H 2 evolution. J Colloid Interface Sci 2024; 663:981-991. [PMID: 38452547 DOI: 10.1016/j.jcis.2024.02.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
To enhance the efficiency of photocatalytic H2 evolution, numerous methods are employed by increasing the utilization of photogenerated charge carriers (PCCs), including catalyst design, defect regulation, and selection of suitable H+ resources. Using self-assembly method, CoWO4/ZnxCd1-xS with p-n heterojunction was synthesized. Although CoWO4 (CW) cannot produce H2 under visible light irradiation, it can provide photogenerated electrons (e-) to Zn0.3Cd0.7S (ZCS), and largely increase the photocatalytic activity of ZCS. The optimal CW/ZCS composite can reach 15.58 mmol·g-1·h-1, which is 45.8 and 24.3 times higher than the values of the pure CdS and ZCS, respectively. The largely enhanced photocatalytic H2 production is attributed to the Zn vacancies (VZn), p-n heterojunction, and p-chlorobenzyl alcohol (Cl-PhCH2OH) as the H+ source of H2 production. VZn on the ZCS surface as the capture center of photogenerated holes (h+), can regulate the carrier distribution, which results in more photogenerated e- and less generated h+. The combination of p-n heterojunction and VZn can enhance the separation and transfer efficiency of PCCs, and effectively inhibit the recombination of charge carriers. To further improve the utilization rate of PCCs, the photocatalytic H2 evolution is proceeded by Cl-PhCH2OH oxidation in N,N-dimethylformamide solution, with 4-chlorobenzaldehyde (Cl-PhCHO) generated. The separated photogenerated e- and h+ both participated in the redox reaction of H+ reduction and Cl-PhCH2OH oxidation, considering that the amount of H2 and Cl-PhCHO products are close to 1:1. This work not only facilitates the separation and transfer of PCCs, but also provides directions for the design of efficient photocatalysts and H2 evolution in the organic phase.
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Affiliation(s)
- Li Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China
| | - Kaixuan Kuang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China
| | - Xiuzhen Zheng
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, PR China.
| | - Jiahui Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China
| | - Wei Ren
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China
| | - Jingbiao Ge
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China
| | - Sujuan Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China
| | - Shifu Chen
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, Anhui 235000, PR China; Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University, Huaibei, Anhui 235000, PR China.
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Li J, Ma HP, Zhao G, Huang G, Sun W, Peng C. Plastic Waste Conversion by Leveraging Renewable Photo/Electro-Catalytic Technologies. CHEMSUSCHEM 2024; 17:e202301352. [PMID: 38226954 DOI: 10.1002/cssc.202301352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/26/2023] [Accepted: 01/15/2024] [Indexed: 01/17/2024]
Abstract
Plastics have revolutionized our lives; however, the exponential growth of their usage has led to a global crisis. More sustainable strategies are needed to address this dilemma and transform the plastics economy from a linearity to a circular model. Herein, we systematically summarize the recent progress in renewable energy-driven plastic conversion strategies, including photocatalysis, electrocatalysis, and their integration. By introducing the significant works, the design principles, mechanisms, and system regulations, we decipher and compare the various aspects of plastic conversion. These approaches show high reactivity and selectivity under environmentally benign conditions and provide alternative reaction pathways for plastic conversion. Plastic upcycling as a chemical feedstock can yield value-added chemicals and fuels, contributing to the establishment of a sustainable and circular economy. Additionally, several innovations in reaction engineering and system designs are presented. Finally, the challenges and perspectives of sustainable energy-driven plastic conversion technologies are comprehensively discussed.
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Affiliation(s)
- Jianan Li
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
- Zhejiang Tiandi Environmental Protection Technology Co., Ltd., Hangzhou, 311121, P. R. China
| | - Hong-Peng Ma
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Shaan Xi, 710072, P. R. China
| | - Guoping Zhao
- Zhejiang Tiandi Environmental Protection Technology Co., Ltd., Hangzhou, 311121, P. R. China
| | - Guangfa Huang
- Zhejiang Tiandi Environmental Protection Technology Co., Ltd., Hangzhou, 311121, P. R. China
| | - Wenbo Sun
- School of Resources and Environmental Engineering, Shandong University of Technology, Zibo, 255000, P. R. China
| | - Chong Peng
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
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6
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Cui B, Rong H, Tian T, Guo D, Duan L, Nkinahamira F, Ndagijimana P, Yan W, Naidu R. Chemical methods to remove microplastics from wastewater: A review. ENVIRONMENTAL RESEARCH 2024; 249:118416. [PMID: 38316391 DOI: 10.1016/j.envres.2024.118416] [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: 11/14/2023] [Revised: 12/23/2023] [Accepted: 02/02/2024] [Indexed: 02/07/2024]
Abstract
Microplastics (Mps) have emerged as a pervasive environmental concern, with their presence detected not only in freshwater ecosystems but also in drinking and bottled water sources. While extensive research has centered on understanding the origins, migration patterns, detection techniques, and ecotoxicological impacts of these contaminants, there remains a notable research gap about the strategies for Mps removal. This study reviews existing literature on chemical approaches for mitigating microplastic contamination within wastewater systems, focusing on coagulation precipitation, electrocoagulation, and advanced oxidation methods. Each approach is systematically explored, encompassing their respective mechanisms and operational dynamics. Furthermore, the comparative analysis of these three techniques elucidates their strengths and limitations in the context of MPs removal. By shedding light on the intricate mechanisms underlying these removal methods, this review contributes to the theoretical foundation of microplastic elimination from wastewater and identifies future research trajectories and potential challenges.
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Affiliation(s)
- Baihui Cui
- State Key Laboratory of Biocontrol, School of Ecology, Shenzhen Campus of Sun Yat-Sen University, Gongchang Road, Guangming District, Guangdong, 518107, China; School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Hongwei Rong
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Tingting Tian
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Dabin Guo
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Luchun Duan
- Global Centre for Environmental Remediation (GCER), College of Science, Engineering and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (crcCARE), University Drive, Callaghan, NSW, 2308, Australia
| | | | | | - Wangwang Yan
- State Key Laboratory of Biocontrol, School of Ecology, Shenzhen Campus of Sun Yat-Sen University, Gongchang Road, Guangming District, Guangdong, 518107, China.
| | - Ravi Naidu
- Global Centre for Environmental Remediation (GCER), College of Science, Engineering and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (crcCARE), University Drive, Callaghan, NSW, 2308, Australia
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7
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Kumar M, Bhujbal SK, Kohli K, Prajapati R, Sharma BK, Sawarkar AD, Abhishek K, Bolan S, Ghosh P, Kirkham MB, Padhye LP, Pandey A, Vithanage M, Bolan N. A review on value-addition to plastic waste towards achieving a circular economy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:171106. [PMID: 38387564 DOI: 10.1016/j.scitotenv.2024.171106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/12/2024] [Accepted: 02/18/2024] [Indexed: 02/24/2024]
Abstract
Plastic and mixed plastic waste (PW) has received increased worldwide attention owing to its huge rate of production, high persistency in the environment, and unsustainable waste management practices. Therefore, sustainable PW management and upcycling approaches are imperative to achieve the objectives of the United Nations Sustainable Development Goals. Numerous recent studies have shown the application and feasibility of various PW conversion techniques to produce materials with better economic value. Within this framework, the current review provides an in-depth analysis of cutting-edge thermochemical technologies such as pyrolysis, gasification, carbonization, and photocatalysis that can be used to value plastic and mixed PW in order to produce energy and industrial chemicals. Additionally, a thorough examination of the environmental impacts of contemporary PW upcycling techniques and their commercial feasibility through life cycle assessment (LCA) and techno-economical assessment are provided in this review. Finally, this review emphasizes the opportunities and challenges accompanying with existing PW upcycling techniques and deliver recommendations for future research works.
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Affiliation(s)
- Manish Kumar
- Amity Institute of Environmental Sciences, Amity University, Noida, India.
| | - Sachin Krushna Bhujbal
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Kirtika Kohli
- Distillate and Heavy Oil Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India
| | - Ravindra Prajapati
- Prairie Research Institute-Illinois Sustainable Technology Center, University of Illinois Urbana-Champaign, Champaign, IL 61820, USA
| | - Brajendra K Sharma
- Prairie Research Institute-Illinois Sustainable Technology Center, University of Illinois Urbana-Champaign, Champaign, IL 61820, USA; United States Department of Agriculture, Agricultural Research Service Eastern Regional Research Center Sustainable Biofuels and Co-Products Research Unit, 600 E. Mermaid Ln., Wyndmoor, PA 19038, USA
| | - Ankush D Sawarkar
- Department of Information Technology, Shri Guru Gobind Singhji Institute of Engineering and Technology (SGGSIET), Nanded, Maharashtra 431 606, India
| | - Kumar Abhishek
- Department of Environment, Forest and Climate Change, Government of Bihar, Patna, India
| | - Shiv Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia
| | - Pooja Ghosh
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India; Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio 70211, Finland
| | - M B Kirkham
- Department of Agronomy, Kansas State University, Manhattan, KS, USA
| | - Lokesh P Padhye
- Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow 226 001, India; Kyung Hee University, Kyung Hee Dae Ro 26, Seoul 02447, Republic of Korea; Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun 248 007, Uttarakhand, India; Centre for Energy and Environmental Sustainability, Lucknow 226029, India
| | - Meththika Vithanage
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia; Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka
| | - Nanthi Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia.
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Nohara NML, Ariza-Tarazona MC, Triboni ER, Nohara EL, Villarreal-Chiu JF, Cedillo-González EI. Are you drowned in microplastic pollution? A brief insight on the current knowledge for early career researchers developing novel remediation strategies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 918:170382. [PMID: 38307272 DOI: 10.1016/j.scitotenv.2024.170382] [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: 10/24/2023] [Revised: 12/29/2023] [Accepted: 01/21/2024] [Indexed: 02/04/2024]
Abstract
Microplastics (MPs) composed of different polymers with various shapes, within a vast granulometric distribution (1 μm - 5 mm) and with a wide variety of physicochemical surface and bulk characteristics spiral around the globe, with different atmospheric, oceanic, cryospheric, and terrestrial residence times, while interacting with other pollutants and biota. The challenges of microplastic pollution are related to the complex relationships between the microplastic generation mechanisms (physical, chemical, and biological), their physicochemical properties, their interactions with other pollutants and microorganisms, the changes in their properties with aging, and their small sizes that facilitate their diffusion and transportation between the air, water, land, and biota, thereby promoting their ubiquity. Early career researchers (ERCs) constitute an essential part of the scientific community committed to overcoming the challenges of microplastic pollution with their new ideas and innovative scientific perspectives for the development of remediation technologies. However, because of the enormous amount of scientific information available, it may be difficult for ERCs to determine the complexity of this environmental issue. This mini-review aims to provide a quick and updated overview of the essential insights of microplastic pollution to ERCs to help them acquire the background needed to develop highly innovative physical, chemical, and biological remediation technologies, as well as valorization proposals and environmental education and awareness campaigns. Moreover, the recommendations for the development of holistic microplastic pollution remediation strategies presented here can help ERCs propose technologies considering the environmental, social, and practical dimensions of microplastic pollution while fulfilling the current government policies to manage this plastic waste.
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Affiliation(s)
- Nicoly Milhardo Lourenço Nohara
- Department of Chemical Engineering, School of Engineering of Lorena, University of São Paulo, Estrada Municipal do Campinho, no number, Lorena, Brazil
| | - Maria Camila Ariza-Tarazona
- Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10/1, Modena 41125, Italy
| | - Eduardo Rezende Triboni
- Department of Chemical Engineering, School of Engineering of Lorena, University of São Paulo, Estrada Municipal do Campinho, no number, Lorena, Brazil
| | - Evandro Luís Nohara
- Department of Mechanical Engineering, University of Taubaté, R. Daniel Daneli, no number, Taubaté, Brazil
| | - Juan Francisco Villarreal-Chiu
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Av. Universidad S/N Ciudad Universitaria, San Nicolás de los Garza 66455, Nuevo León, Mexico; Centro de Investigación en Biotecnología y Nanotecnología (CIByN), Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica, Km. 10 autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca 66628, Nuevo León, Mexico
| | - Erika Iveth Cedillo-González
- Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10/1, Modena 41125, Italy; National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giusti, Florence 50121, Italy.
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9
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Jiang M, Wang X, Xi W, Yang P, Zhou H, Duan J, Ratova M, Wu D. Chemical catalytic upgrading of polyethylene terephthalate plastic waste into value-added materials, fuels and chemicals. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169342. [PMID: 38123093 DOI: 10.1016/j.scitotenv.2023.169342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/18/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
The substantial production of polyethylene terephthalate (PET) products, coupled with high abandonment rates, results in significant environmental pollution and resource wastage. This has prompted global attention to the development of rational strategies for PET waste treatment. In the context of renewability and sustainability, catalytic chemical technology provides an effective means to recycle and upcycle PET waste into valuable resources. In this review, we initially provide an overview of strategies employed in the thermocatalytic process to recycle PET waste into valuable carbon materials, fuels and typical refined chemicals. The effect of catalysts on the quality and quantity of specific products is highlighted. Next, we introduce the development of renewable-energy-driven electrocatalytic and photocatalytic systems for sustainable PET waste upcycling, focusing on rational catalysts, innovative catalytic system design, and corresponding underlying catalytic mechanisms. Moreover, we discuss advantages and disadvantages of three chemical catalytic strategies. Finally, existing limitations and outlook toward controllable selectivity and yield enhancement of value-added products and PET upvaluing technology for scale-up applications are proposed. This review aims to inspire the exploration of waste-to-treasure technologies for renewable-energy-driven waste management toward a circular economy.
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Affiliation(s)
- Mingkun Jiang
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Hubei Key Laboratory of Plasma Chemistry and New Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, PR China
| | - Xiali Wang
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Hubei Key Laboratory of Plasma Chemistry and New Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, PR China
| | - Wanlong Xi
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Hubei Key Laboratory of Plasma Chemistry and New Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, PR China
| | - Peng Yang
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Hubei Key Laboratory of Plasma Chemistry and New Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, PR China
| | - Hexin Zhou
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Hubei Key Laboratory of Plasma Chemistry and New Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, PR China
| | - Junyuan Duan
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Hubei Key Laboratory of Plasma Chemistry and New Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, PR China
| | - Marina Ratova
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK
| | - Dan Wu
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Hubei Key Laboratory of Plasma Chemistry and New Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, PR China.
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Guo S, Feng D, Li Y, Liu L, Tang J. Innovations in chemical degradation technologies for the removal of micro/nano-plastics in water: A comprehensive review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 271:115979. [PMID: 38244511 DOI: 10.1016/j.ecoenv.2024.115979] [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: 10/15/2023] [Revised: 01/06/2024] [Accepted: 01/11/2024] [Indexed: 01/22/2024]
Abstract
Micro/nanoplastics (M/NPs) in water have raised global concern due to their potential environmental risks. To reestablish a M/NPs free world, enormous attempts have been made toward employing chemical technologies for their removal in water. This review comprehensively summarizes the advances in chemical degradation approaches for M/NPs elimination. It details and discusses promising techniques, including photo-based technologies, Fenton-based reaction, electrochemical oxidation, and novel micro/nanomotors approaches. Subsequently, critical influence factors, such as properties of M/NPs and operating factors, are analyzed in this review specifically. Finally, it concludes by addressing the current challenges and future perspectives in chemical degradation. This review will provide guidance for scientists to further explore novel strategies and develop feasible chemical methods for the improved control and remediation of M/NPs in the future.
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Affiliation(s)
- Saisai Guo
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Di Feng
- Shandong Facility Horticulture Bioengineering Research Center/Weifang University of Science and Technology, Weifang 262700, Shandong, China
| | - Yu Li
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Linan Liu
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Jingchun Tang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
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11
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Bhattacharjee S, Linley S, Reisner E. Solar reforming as an emerging technology for circular chemical industries. Nat Rev Chem 2024:10.1038/s41570-023-00567-x. [PMID: 38291132 DOI: 10.1038/s41570-023-00567-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/24/2023] [Indexed: 02/01/2024]
Abstract
The adverse environmental impacts of greenhouse gas emissions and persistent waste accumulation are driving the demand for sustainable approaches to clean-energy production and waste recycling. By coupling the thermodynamically favourable oxidation of waste-derived organic carbon streams with fuel-forming reduction reactions suitable for producing clean hydrogen or converting CO2 to fuels, solar reforming simultaneously valorizes waste and generates useful chemical products. With appropriate light harvesting, catalyst design, device configurations and waste pre-treatment strategies, a range of sustainable fuels and value-added chemicals can already be selectively produced from diverse waste feedstocks, including biomass and plastics, demonstrating the potential of solar-powered upcycling plants. This Review highlights solar reforming as an emerging technology that is currently transitioning from fundamental research towards practical application. We investigate the chemistry and compatibility of waste pre-treatment, introduce process classifications, explore the mechanisms of different solar reforming technologies, and suggest appropriate concepts, metrics and pathways for various deployment scenarios in a net-zero-carbon future.
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Affiliation(s)
| | - Stuart Linley
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
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12
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Cao Y, Sathish CI, Guan X, Wang S, Palanisami T, Vinu A, Yi J. Advances in magnetic materials for microplastic separation and degradation. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132537. [PMID: 37716264 DOI: 10.1016/j.jhazmat.2023.132537] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023]
Abstract
The widespread use of plastics in modern human society has led to severe environmental pollution with microplastics (MP/MPs). The rising consumption of plastics raises the omnipresence of microplastics in aquatic environments, which carry toxic organic matter, transport toxic chemicals, and spread through the food chain, seriously threatening marine life and human health. In this context, several advanced strategies for separating and degrading MPs from water have been developed recently, and magnetic materials and their nanostructures have emerged as promising materials for targeting, adsorbing, transporting, and degrading MPs. However, a comprehensive review of MP remediation using magnetic materials and their nanostructures is currently lacking. The present work provides a critical review of the recent advances in MP removal/degradation using magnetic materials. The focus is on the comparison and analysis of the MP's removal efficiencies of different magnetic materials, including iron/ferrite nanoparticles, magnetic nanocomposites, and micromotors, aiming to unravel the underlying roles of magnetic materials in different types of MP degradation and present the general strategies for designing them with optimal performance. Finally, the review outlines the forthcoming challenges and perspectives in the development of magnetic nanomaterials for MP remediation.
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Affiliation(s)
- Yitong Cao
- Global Innovative Center of Advanced Nanomaterials, College of Engineering, Science and Environment, University of Newcastle, Callaghan 2308, NSW, Australia
| | - C I Sathish
- Global Innovative Center of Advanced Nanomaterials, College of Engineering, Science and Environment, University of Newcastle, Callaghan 2308, NSW, Australia.
| | - Xinwei Guan
- Global Innovative Center of Advanced Nanomaterials, College of Engineering, Science and Environment, University of Newcastle, Callaghan 2308, NSW, Australia
| | - Shaobin Wang
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Thava Palanisami
- Global Innovative Center of Advanced Nanomaterials, College of Engineering, Science and Environment, University of Newcastle, Callaghan 2308, NSW, Australia
| | - Ajayan Vinu
- Global Innovative Center of Advanced Nanomaterials, College of Engineering, Science and Environment, University of Newcastle, Callaghan 2308, NSW, Australia
| | - Jiabao Yi
- Global Innovative Center of Advanced Nanomaterials, College of Engineering, Science and Environment, University of Newcastle, Callaghan 2308, NSW, Australia.
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13
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Lv H, Zhang F, Wang L, Shen Q, Li G, Zhan M, Wang G, Wang G, Liu Y. Construction of 2D/1D Cu 7S 4 nanosheets/Mn 0.3Cd 0.7S nanorods heterojunction for highly efficient photocatalytic hydrogen evolution. J Colloid Interface Sci 2024; 653:1304-1316. [PMID: 37801842 DOI: 10.1016/j.jcis.2023.09.137] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 10/08/2023]
Abstract
Developing cost-effective cocatalyst-modified photocatalytic systems with boosted carrier separation and rapid surface catalytic reaction is an ideal strategy for effectively converting solar energy into desired fuels. Herein, a series of Cu7S4/Mn0.3Cd0.7S hierarchical heterostructures are designed and fabricated to achieve efficient and robust photocatalytic H2 evolution by coupling one-dimensional (1D) Mn0.3Cd0.7S nanorods with two-dimensional (2D) Cu7S4 nanosheets through a facile sonochemical strategy. Benefiting from dimensionality and cocatalyst effects, the constructed 2D/1D Cu7S4/Mn0.3Cd0.7S heterojunction photocatalyst containing 1.5 wt% Cu7S4 displays excellent photostability and superior photocatalytic H2 evolution rate up to 914.3 μmol h-1, which is 4.43 and 2.22-folds increment relative to bare Mn0.3Cd0.7S and the 3 wt% Pt/Mn0.3Cd0.7S, respectively. The various characterization results reveal that the utilization of semimetallic Cu7S4 nanosheets as the cocatalyst to form a Schottky heterojunction can promote the light-harvesting capability, suppress charge carrier recombination, and provide sufficient reaction sites for hydrogen generation, thereby resulting in the dramatically improved photocatalytic performance. This work clarifies the role of Cu7S4 nanosheets as the robust and cost-effective cocatalyst in the photocatalytic reaction and opens a new horizon for designing other Cu7S4-based cocatalyst/semiconductor Schottky heterostructures for efficient solar-to-fuel conversion.
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Affiliation(s)
- Hua Lv
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Fubiao Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Lanlan Wang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qinhui Shen
- College of Physics, Henan Normal University, Xinxiang, Henan 453007, China
| | - Guanyong Li
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Mingyan Zhan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Gongke Wang
- School of Materials Science and Engineering, Henan Engineering Research Center of Design and Recycle for Advanced Electrochemical Energy Storage Materials, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Guangtao Wang
- College of Physics, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Yumin Liu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
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14
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Zhuo M, Chen Z, Liu X, Wei W, Shen Y, Ni BJ. A broad horizon for sustainable catalytic oxidation of microplastics. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 340:122835. [PMID: 37931676 DOI: 10.1016/j.envpol.2023.122835] [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: 03/31/2023] [Revised: 10/10/2023] [Accepted: 10/29/2023] [Indexed: 11/08/2023]
Abstract
Microplastics (MPs) have attracted tremendous attention due to their widespread appearance in the environment and biota, and their adverse effects on organisms. Since plastics are substantially produced to meet human needs, primary and secondary MPs are extensively trapped in wastewater treatment plants, freshwater, drinking water, ocean, air, and soil. The serious MPs pollution calls for efficient treatment strategies Herein, we discuss three catalytic processes (photocatalysis, electrocatalysis, and biocatalysis) for the sustainable management of MPs, and the relevant catalytic mechanisms are clarified. For photocatalysis, three categories (organic, inorganic, hybrid) of photocatalysts are listed, with degradation efficiency of 23%-100%. Next, relative impact factors on photocatalysis, such as characteristics of MPs and photocatalysts, are discussed. Then, some promising electrocatalysts for the degradation/conversion of (micro)plastics and standard electrolyzer designs are briefly introduced. This electrocatalytic method has achieved over 77% of Faradaic efficiency. Next, potential organisms with abundant biocatalysts for degrading different types of MPs are reviewed. Advances in three bioremediation techniques including biositimulation, bioaugmentation, and biosurfactant are outlined. Lastly, perspectives are put forward to promote scientific development in solving environmental issues on MPs pollution in broad fields. This paper provides insights into the development of next-generation techniques for MPs pollution management in a sustainable manner.
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Affiliation(s)
- Maoshui Zhuo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia
| | - Zhijie Chen
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia
| | - Xiaoqing Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia
| | - Wei Wei
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia
| | - Yansong Shen
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia; School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
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15
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Li DT, Yu H, Huang Y. Facile H 2PdCl 4-induced photoreforming of insoluble PET waste for C1-C3 compound production. Front Chem 2023; 11:1265556. [PMID: 37795385 PMCID: PMC10546182 DOI: 10.3389/fchem.2023.1265556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 08/28/2023] [Indexed: 10/06/2023] Open
Abstract
Plastic pollution has emerged as a pressing global concern, driven by the extensive production and consumption of plastic, resulting in over 8 billion tons of plastic waste generated to date. Conventional disposal methods have proven inadequate in effectively managing polymer waste, necessitating the exploration of novel techniques. Previous research has demonstrated the successful application of photoreforming (PR) in converting water-soluble oligomer fragments of plastics into valuable chemicals. However, an unresolved challenge remains in dealing with the insoluble oligomer fragments characterized by complex chemical structures and larger molecular sizes. In this study, we propose a facile approach that involves H2PdCl4-induced activation on PET substrate for PR of PET bottles. Remarkably, this method enables the production of C1-C3 compounds without the reliance on sacrificial reagents or photocatalysts. The significant findings of this study offer a practical solution to address the most formidable aspect of plastic PR, specifically targeting the insoluble oligomer fragments. Moreover, this research contributes to the advancement of effective strategies for the sustainable management of plastic waste.
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Affiliation(s)
- Dani Tong Li
- Stephen Perse Foundation, Cambridge, United Kingdom
| | - He Yu
- Laboratoire de Physique et d’Étude des Matériaux, ESPCI Paris, PSL Research University, Sorbonne Université, Centre national de la recherche scientifique, Paris, France
| | - Ying Huang
- Key Laboratory of Industrial Equipment Quality Big Data, No.5 Electronics Research Institute of Ministry of Industry and Information Technology (MIIT), Guangzhou, China
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16
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Li Z, Zhao Y, Deng Q, Zhu X, Tan Y, Feng Z, Ji H, Zhang S, Yao L. In Situ Growth of CdZnS Nanoparticles@Ti 3C 2T x MXene Nanosheet Heterojunctions for Boosted Visible-Light-Driven Photocatalytic Hydrogen Evolution. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2261. [PMID: 37570578 PMCID: PMC10421097 DOI: 10.3390/nano13152261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/13/2023]
Abstract
Using natural light energy to convert water into hydrogen is of great significance to solving energy shortages and environmental pollution. Due to the rapid recombination of photogenerated carriers after separation, the efficiency of photocatalytic hydrogen production using photocatalysts is usually very low. Here, efficient CdZnS nanoparticles@Ti3C2Tx MXene nanosheet heterojunction photocatalysts have been successfully prepared by a facile in situ growth strategy. Since the CdZnS nanoparticles uniformly covered the Ti3C2Tx Mxene nanosheets, the agglomeration phenomenon of CdZnS nanoparticles could be effectively inhibited, accompanied by increased Schottky barrier sites and an enhanced migration rate of photogenerated carriers. The utilization efficiency of light energy can be improved by inhibiting the recombination of photogenerated electron-hole pairs. As a result, under the visible-light-driven photocatalytic experiments, this composite achieved a high hydrogen evolution rate of 47.1 mmol h-1 g-1, which is much higher than pristine CdZnS and Mxene. The boosted photocatalytic performances can be attributed to the formed heterojunction of CdZnS nanoparticles and Ti3C2Tx MXene nanosheets, as well as the weakened agglomeration effects.
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Affiliation(s)
- Zelin Li
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China; (Z.L.); (Y.Z.); (X.Z.); (Y.T.); (Z.F.); (H.J.); (L.Y.)
- Research Center for Advanced Information Materials (CAIM), Huangpu Research & Graduate School of Guangzhou University, Guangzhou 510555, China
| | - Yang Zhao
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China; (Z.L.); (Y.Z.); (X.Z.); (Y.T.); (Z.F.); (H.J.); (L.Y.)
- Research Center for Advanced Information Materials (CAIM), Huangpu Research & Graduate School of Guangzhou University, Guangzhou 510555, China
| | - Qinglin Deng
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China; (Z.L.); (Y.Z.); (X.Z.); (Y.T.); (Z.F.); (H.J.); (L.Y.)
- Research Center for Advanced Information Materials (CAIM), Huangpu Research & Graduate School of Guangzhou University, Guangzhou 510555, China
| | - Xuhui Zhu
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China; (Z.L.); (Y.Z.); (X.Z.); (Y.T.); (Z.F.); (H.J.); (L.Y.)
- Research Center for Advanced Information Materials (CAIM), Huangpu Research & Graduate School of Guangzhou University, Guangzhou 510555, China
| | - Yipeng Tan
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China; (Z.L.); (Y.Z.); (X.Z.); (Y.T.); (Z.F.); (H.J.); (L.Y.)
- Research Center for Advanced Information Materials (CAIM), Huangpu Research & Graduate School of Guangzhou University, Guangzhou 510555, China
| | - Ziwen Feng
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China; (Z.L.); (Y.Z.); (X.Z.); (Y.T.); (Z.F.); (H.J.); (L.Y.)
- Research Center for Advanced Information Materials (CAIM), Huangpu Research & Graduate School of Guangzhou University, Guangzhou 510555, China
| | - Hao Ji
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China; (Z.L.); (Y.Z.); (X.Z.); (Y.T.); (Z.F.); (H.J.); (L.Y.)
- Research Center for Advanced Information Materials (CAIM), Huangpu Research & Graduate School of Guangzhou University, Guangzhou 510555, China
| | - Shan Zhang
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China; (Z.L.); (Y.Z.); (X.Z.); (Y.T.); (Z.F.); (H.J.); (L.Y.)
- Research Center for Advanced Information Materials (CAIM), Huangpu Research & Graduate School of Guangzhou University, Guangzhou 510555, China
| | - Lingmin Yao
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China; (Z.L.); (Y.Z.); (X.Z.); (Y.T.); (Z.F.); (H.J.); (L.Y.)
- Research Center for Advanced Information Materials (CAIM), Huangpu Research & Graduate School of Guangzhou University, Guangzhou 510555, China
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17
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He J, Han L, Ma W, Chen L, Ma C, Xu C, Yang Z. Efficient photodegradation of polystyrene microplastics integrated with hydrogen evolution: Uncovering degradation pathways. iScience 2023; 26:106833. [PMID: 37250789 PMCID: PMC10220245 DOI: 10.1016/j.isci.2023.106833] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/03/2023] [Accepted: 05/04/2023] [Indexed: 05/31/2023] Open
Abstract
Photocatalytic microplastics (MPs) conversion into valuable products is a promising approach to alleviate MPs pollution in aquatic environments. Herein, we developed an amorphous alloy/photocatalyst composite (FeB/TiO2) that can successfully convert polystyrene (PS) MPs to clean H2 fuel and valuable organic compounds (92.3% particle size reduction of PS-MPs and 103.5 μmol H2 production in 12 h). FeB effectively enhanced the light-absorption and carrier separation of TiO2, thereby promoting more reactive oxygen species generation (especially ‧OH) and combination of photoelectrons with protons. The main products (e.g., benzaldehyde, benzoic acid, etc.) were identified. Additionally, the dominant PS-MPs photoconversion pathway was elucidated based on density functional theory calculations, by which the significant role of ‧OH was demonstrated in combination with radical quenching data. This study provides a prospective approach to mitigate MPs pollution in aquatic environments and reveals the synergistic mechanism governing the photocatalytic conversion of MPs and generation of H2 fuel.
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Affiliation(s)
- Jiehong He
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Lanfang Han
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Weiwei Ma
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
| | - Liying Chen
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
| | - Chuanxin Ma
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Chao Xu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Zhifeng Yang
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
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18
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Yu H, Jiang H, Cao X, Yao S. Ag 2NCN anchored on Ti 3C 2T x MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation. RSC Adv 2023; 13:16602-16609. [PMID: 37305443 PMCID: PMC10251192 DOI: 10.1039/d3ra01776a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 05/19/2023] [Indexed: 06/13/2023] Open
Abstract
The quick charge recombination of light-generated electrons and holes severely restricts the photocatalytic applications of single semiconductors. Here, a straightforward electrostatically driven self-assembly technique was used to construct an Ag2NCN/Ti3C2Tx Schottky heterojunction, which was then used to degrade Rhodamine B (RhB) in the illumination of visible light. The findings from the experiments revealed that as a cocatalyst, Ti3C2Tx significantly suppresses the recombination rate and broadens visible absorptivity to improve Ag2NCN photocatalytic efficiency. The optimized Ag2NCN/Ti3C2Tx (AT2) composite exhibited an outstanding photocatalytic rate in 96 min, with the highest RhB degradation rate (k = 0.029 min-1), which was around fifteen times that of pure Ag2NCN (k = 0.002 min-1). Furthermore, the trapping-agent experiment showed photogenerated superoxide radicals and holes were the principal active agents inside the photodegradation of RhB. Compared with Ag-based semiconductors, the composite exhibited outstanding photostability, highlighting its excellent potential for application in visible-light photocatalysis.
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Affiliation(s)
- Haidong Yu
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology Shenyang 110142 China
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey Langfang 065000 China
| | - Haibing Jiang
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey Langfang 065000 China
| | - Xuan Cao
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology Shenyang 110142 China
| | - Shuhua Yao
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology Shenyang 110142 China
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19
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Zheng Y, Fan P, Guo R, Liu X, Zhou X, Xue C, Ji H. Visible light driven reform of wasted plastics to generate green hydrogen over mesoporous ZnIn 2S 4. RSC Adv 2023; 13:12663-12669. [PMID: 37101527 PMCID: PMC10123493 DOI: 10.1039/d3ra02279j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 04/14/2023] [Indexed: 04/28/2023] Open
Abstract
As the global consumption of plastics keeps increasing, the accumulated plastics in the natural environment have threatened the survival of human beings. Photoreforming, as a simple and low-energy way, could transform wasted plastic into fuel and small organic chemicals at ambient temperature. However, the previously reported photocatalysts have some drawbacks, such as low efficiency, containing precious or toxic metal. Herein, a noble-free, non-toxic, and easy prepared mesoporous ZnIn2S4 photocatalyst has been applied in photoreforming of polylactic acid (PLA), polyethylene terephthalate (PET) and polyurethane (PU), generating small organic chemicals and H2 fuel under simulated sunlight. Plastic was degraded into small organic molecules after the pretreatment, which futher acted as the substrate for photoreforming. Mesoporous ZnIn2S4 exhibits high H2 production efficiency, strong redox ability, and long-term photostability. Furthermore, mesoporous ZnIn2S4 could overcome the hindrances of dyes and additives of realistic wasted plastic bags and bottles with high decomposition efficiency, providing an efficient and sustainable strategy for the upcycling of wasted plastics.
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Affiliation(s)
- Yeqin Zheng
- School of Chemical Engineering and Technology, Sun Yat-Sen University Zhuhai 519082 P.R. China
| | - Ping Fan
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P.R. China
| | - Rongjie Guo
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P.R. China
| | - Xiaohui Liu
- School of Chemical Engineering and Technology, Sun Yat-Sen University Zhuhai 519082 P.R. China
| | - Xiantai Zhou
- School of Chemical Engineering and Technology, Sun Yat-Sen University Zhuhai 519082 P.R. China
| | - Can Xue
- School of Chemical Engineering and Technology, Sun Yat-Sen University Zhuhai 519082 P.R. China
| | - Hongbing Ji
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P.R. China
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20
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Wu Y, Sakurai T, Adachi T, Wang Q. Alternatives to water oxidation in the photocatalytic water splitting reaction for solar hydrogen production. NANOSCALE 2023; 15:6521-6535. [PMID: 36938953 DOI: 10.1039/d3nr00260h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The photocatalytic water splitting process to produce H2 is an attractive approach to meet energy demands while achieving carbon emission reduction targets. However, none of the current photocatalytic devices meets the criteria for practical sustainable H2 production due to their insufficient efficiency and the resulting high H2 cost. Economic viability may be achieved by simultaneously producing more valuable products than O2 or integrating with reforming processes of real waste streams, such as plastic and food waste. Research over the past decade has begun to investigate the possibility of replacing water oxidation with more kinetically and thermodynamically facile oxidation reactions. We summarize how various alternative photo-oxidation reactions can be combined with proton reduction in photocatalysis to achieve chemical valorization with concurrent H2 production. By examining the current advantages and challenges of these oxidation reactions, we intend to demonstrate that these technologies would contribute to providing H2 energy, while also producing high-value chemicals for a sustainable chemical industry and eliminating waste.
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Affiliation(s)
- Yaqiang Wu
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Takuya Sakurai
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Takumi Adachi
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Qian Wang
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
- Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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21
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Goveas LC, Nayak S, Kumar PS, Rangasamy G, Vidya SM, Vinayagam R, Selvaraj R, Vo DVN. Microplastics occurrence, detection and removal with emphasis on insect larvae gut microbiota. MARINE POLLUTION BULLETIN 2023; 188:114580. [PMID: 36657228 DOI: 10.1016/j.marpolbul.2023.114580] [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: 09/10/2022] [Revised: 12/22/2022] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
Microplastics have been identified in all living forms including human beings, the present need is to restrain its spread and devise measures to remediate microplastics from polluted ecosystems. In this regard, the present review emphasizes on the occurrence, sources detection and toxic effects of microplastics in various ecosystems. The removal of microplastics is prevalent by various physico-chemical and biological methods, although the removal efficiency by biological methods is low. It has been noted that the degradation of plastics by insect gut larvae is a well-known aspect, however, the underlying mechanism has not been completely identified. Studies conducted have shown the magnificent contribution of gut microbiota, which have been isolated and exploited for microplastic remediation. This review also focuses on this avenue, as it highlights the contribution of insect gut microbiota in microplastic degradation along with challenges faced and future prospects in this area.
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Affiliation(s)
- Louella Concepta Goveas
- Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Biotechnology Engineering, Nitte, India
| | - Sneha Nayak
- Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Biotechnology Engineering, Nitte, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai 603 110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai 603 110, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali 140413, India; School of Engineering, Lebanese American University, Byblos, Lebanon.
| | - Gayathri Rangasamy
- School of Engineering, Lebanese American University, Byblos, Lebanon; Department of Sustainable Engineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai 602105, India
| | - S M Vidya
- Nitte (Deemed to be University), NMAM Institute of Technology (NMAMIT), Department of Biotechnology Engineering, Nitte, India.
| | - Ramesh Vinayagam
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Raja Selvaraj
- Department of Chemical Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India.
| | - Dai Viet N Vo
- Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
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22
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Mehmood T, Mustafa B, Mackenzie K, Ali W, Sabir RI, Anum W, Gaurav GK, Riaz U, Liu X, Peng L. Recent developments in microplastic contaminated water treatment: Progress and prospects of carbon-based two-dimensional materials for membranes separation. CHEMOSPHERE 2023; 316:137704. [PMID: 36592840 DOI: 10.1016/j.chemosphere.2022.137704] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 12/23/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
Micro (nano)plastics pollution is a noxious menace not only for mankind but also for marine life, as removing microplastics (MPs) is challenging due to their physiochemical properties, composition, and response toward salinity and pH. This review provides a detailed assessment of the MPs pollution in different water types, environmental implications, and corresponding treatment strategies. With the advancement in nanotechnology, mitigation strategies for aqueous pollution are seen, especially due to the fabrication of nanosheets/membranes mostly utilized as a filtration process. Two-dimensional (2D) materials are increasingly used for membranes due to their diverse structure, affinity, cost-effectiveness, and, most importantly, removal efficiency. The popular 2D materials used for membrane-based organic and inorganic pollutants from water mainly include graphene and MXenes however their effectiveness for MPs removal is still in its infancy. Albeit, the available literature asserts a 70- 99% success rate in micro/nano plastics removal achieved through membranes fabricated via graphene oxide (GO), reduced graphene oxide (rGO) and MXene membranes. This review examined existing membrane separation strategies for MPs removal, focusing on the structural properties of 2D materials, composite, and how they adsorb pollutants and underlying physicochemical mechanisms. Since MPs and other contaminants commonly coexist in the natural environment, a brief examination of the response of 2D membranes to MPs removal was also conducted. In addition, the influencing factors regulate MPs removal performance of membranes by impacting their two main operating routes (filtration and adsorption). Finally, significant limitations, research gaps, and future prospects of 2D material-based membranes for effectively removing MPs are also proposed. The conclusion is that the success of 2D material is strongly linked to the types, size of MPs, and characteristics of aqueous media. Future perspectives talk about the problems that need to be solved to get 2D material-based membranes out of the lab and onto the market.
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Affiliation(s)
- Tariq Mehmood
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China; Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Engineering, Permoserstr. 15, D-04318 Leipzig, Germany.
| | - Beenish Mustafa
- National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China
| | - Katrin Mackenzie
- Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Engineering, Permoserstr. 15, D-04318 Leipzig, Germany
| | - Wahid Ali
- Department of Chemical Engineering Technology, College of Applied Industrial Technology (CAIT), Jazan University, Kingdom of Saudi Arabia
| | - Raja Irfan Sabir
- Faculty of Management Sciences, University of Central Punjab, Lahore; Pakistan
| | - Wajiha Anum
- Regional Agricultural Research Institute, Bahawalpur, Pakistan
| | - Gajendra Kumar Gaurav
- Sustainable Process Integration Laboratory, SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology, VUT Brno, Technická 2896/2, 616 69, Brno, Czech Republic; School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China
| | - Umair Riaz
- Department of Soil and Environmental Sciences, Muhammad Nawaz Shareef University of Agriculture, Multan, 60000, Pakistan
| | - Xinghui Liu
- School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China; Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077 China
| | - Licheng Peng
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou, Hainan Province, 570228, China.
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23
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Zhang Y, Qi MY, Tang ZR, Xu YJ. Photoredox-Catalyzed Plastic Waste Conversion: Nonselective Degradation versus Selective Synthesis. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Affiliation(s)
- Yi Zhang
- College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Ming-Yu Qi
- College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Zi-Rong Tang
- College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, People’s Republic of China
| | - Yi-Jun Xu
- College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, People’s Republic of China
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24
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Khedr TM, El-Sheikh SM, Endo-Kimura M, Wang K, Ohtani B, Kowalska E. Development of Sulfur-Doped Graphitic Carbon Nitride for Hydrogen Evolution under Visible-Light Irradiation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:62. [PMID: 36615972 PMCID: PMC9824438 DOI: 10.3390/nano13010062] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/16/2022] [Accepted: 12/18/2022] [Indexed: 06/17/2023]
Abstract
Developing eco-friendly strategies to produce green fuel has attracted continuous and extensive attention. In this study, a novel gas-templating method was developed to prepare 2D porous S-doped g-C3N4 photocatalyst through simultaneous pyrolysis of urea (main g-C3N4 precursor) and ammonium sulfate (sulfur source and structure promoter). Different content of ammonium sulfate was examined to find the optimal synthesis conditions and to investigate the property-governed activity. The physicochemical properties of the obtained photocatalysts were analyzed by X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), scanning transmission electron microscopy (STEM), specific surface area (BET) measurement, ultraviolet-visible light diffuse reflectance spectroscopy (UV/vis DRS), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectroscopy and reversed double-beam photo-acoustic spectroscopy (RDB-PAS). The as-prepared S-doped g-C3N4 photocatalysts were applied for photocatalytic H2 evolution under vis irradiation. The condition-dependent activity was probed to achieve the best photocatalytic performance. It was demonstrated that ammonium sulfate played a crucial role to achieve concurrently 2D morphology, controlled nanostructure, and S-doping of g-C3N4 in a one-pot process. The 2D nanoporous S-doped g-C3N4 of crumpled lamellar-like structure with large specific surface area (73.8 m2 g-1) and improved electron-hole separation showed a remarkable H2 generation rate, which was almost one order in magnitude higher than that of pristine g-C3N4. It has been found that though all properties are crucial for the overall photocatalytic performance, efficient doping is probably a key factor for high photocatalytic activity. Moreover, the photocatalysts exhibit significant stability during recycling. Accordingly, a significant potential of S-doped g-C3N4 has been revealed for practical use under natural solar radiation.
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Affiliation(s)
- Tamer M. Khedr
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
- Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), Cairo 11421, Egypt
| | - Said M. El-Sheikh
- Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), Cairo 11421, Egypt
| | - Maya Endo-Kimura
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
| | - Kunlei Wang
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
| | - Bunsho Ohtani
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
| | - Ewa Kowalska
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
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25
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Cholewinski A, Dadzie E, Sherlock C, Anderson WA, Charles TC, Habib K, Young SB, Zhao B. A critical review of microplastic degradation and material flow analysis towards a circular economy. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 315:120334. [PMID: 36216183 DOI: 10.1016/j.envpol.2022.120334] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/12/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
The resilience and low cost of plastics has made their usage ubiquitous, but is also the cause of their prevalence and longevity as waste. Plastic pollution has become a great concern to the health and wellbeing of ecosystems around the world; microplastics are a particular threat, due to their high mobility, ease of ingestion by wildlife, and ability to adsorb and carry toxic contaminants. Material flow analysis has been widely applied to examine stocks and flows of materials in other industries, and has more recently been applied to plastics to examine areas where waste can reach the environment. However, while much research has gone into the environmental fate of microplastics, degradation strategies have been a lesser focus, and material flow analysis of microplastics has suffered from lack of data. Furthermore, the variety of plastics, their additives, and any contaminants pose a significant challenge in degrading (and not merely fragmenting) microplastic particles. This review discusses the current degradation strategies and solutions for dealing with existing and newly-generated microplastic waste along with examining the status of microplastics-based material flow analysis, which are critical for evaluating the possibility of incorporating microplastic waste into a circular economy. The degradation strategies are critically examined, identifying challenges and current trends, as well as important considerations that are frequently under-reported. An emphasis is placed on identifying missing data or information in both material flow analysis and degradation methods that could prove crucial in improving understanding of microplastic flows, as well as optimizing degradation strategies and minimizing any negative environmental impact.
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Affiliation(s)
- Aleksander Cholewinski
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Institute for Polymer Research, Centre for Bioengineering and Biotechnology, University of Waterloo, Waterloo, Ontario, Canada
| | - Eugenia Dadzie
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
| | - Cassandra Sherlock
- School of Environment, Enterprise, and Development (SEED), University of Waterloo, Waterloo, Ontario, Canada
| | - William A Anderson
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Trevor C Charles
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
| | - Komal Habib
- School of Environment, Enterprise, and Development (SEED), University of Waterloo, Waterloo, Ontario, Canada
| | - Steven B Young
- School of Environment, Enterprise, and Development (SEED), University of Waterloo, Waterloo, Ontario, Canada
| | - Boxin Zhao
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Institute for Polymer Research, Centre for Bioengineering and Biotechnology, University of Waterloo, Waterloo, Ontario, Canada.
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26
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Liu Q, Chen Y, Chen Z, Yang F, Xie Y, Yao W. Current status of microplastics and nanoplastics removal methods: Summary, comparison and prospect. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 851:157991. [PMID: 35964738 DOI: 10.1016/j.scitotenv.2022.157991] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/17/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
In modern society, plastics also play an indispensable role in people's lives due to their various excellent properties. However, when these plastic products are discarded after being used, after being subjected to external influences, they will continue to be worn, damaged and degraded into micro- and nano-scale plastics, which are microplastics and nanoplastics (M/NPs). Although people's attention has been paid to M/NPs at present, the focus is still mainly on the detection and hazard of M/NPs, and how to remove M/NPs is relatively less popular. This review was written in order to draw the attention of more researchers to remove M/NPs. This review first briefly introduces the research background of M/NPs, and also shows the main analytical methods currently used for qualitative and quantitative M/NPs. Then, most of the current literature on the removal of M/NPs was collected, and they were classified, summarized, and introduced according to the classification of physical, physicochemical, and biological methods. The advantages and disadvantages of various methods are summarized, and they are also compared, which can help more researchers choose the appropriate method for research. In addition, the application scenarios of these methods are briefly introduced. Finally, some future research directions are proposed for the current research status of M/NPs removal. It is hoped that this will further promote the development on the method of removing M/NPs.
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Affiliation(s)
- Qingrun Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yulun Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Zhe Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Fangwei Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yunfei Xie
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Weirong Yao
- State Key Laboratory of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China.
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27
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Rizwan K, Bilal M. Developments in advanced oxidation processes for removal of microplastics from aqueous matrices. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:86933-86953. [PMID: 36279055 DOI: 10.1007/s11356-022-23545-0] [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: 07/05/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Continuous incorporation of microplastics (MPs) and their fragmented residues into the ecosystem has sparked significant scientific apprehensions about persistence, a multitude of sources, and toxicity impacts on human health and aquatic entities. Overcoming this multifaceted hazard necessitates the development of novel techniques with robust efficiencies to eliminate microplastics from the environmental compartments. Coagulation, flocculation, and membrane filtration are non-destructive techniques but necessitate extra steps for microplastic degradation, whereas biological means have been confirmed less efficient (less than 15% degradation). Recent reports have emphasized advanced oxidation processes (AOPs) as practical treatment alternatives, representing superior catalytic efficacy for microplastic degradation (≈30-95%). Nevertheless, additional investigations should be carried out to evaluate the performance of AOPs in degrading microplastics under real environmental matrices. Moreover, the detection of transformed metabolites, degradation mechanistic insights, and toxicity bioassays are required to substantiate AOP assumption as feasible remediation substitutes. This review focuses on the source, occurrence, discharge, transportation, and associated paramount health risks of microplastics. Advanced oxidation processes-assisted removal of microplastics from the aqueous matrices is thoroughly vetted with up-to-date findings. Factors affecting the degradation of MPs have been discussed in detail. In addition to the generalized mechanistic insights into photocatalytic degradation, the risk assessment of aging intermediates is also comprehended. Finally, the review was concluded by emphasizing current research gaps and incoming research tendencies to provide guidelines for efficiently addressing microplastic pollution.
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Affiliation(s)
- Komal Rizwan
- Department of Chemistry, University of Sahiwal, Sahiwal, 57000, Pakistan.
| | - Muhammad Bilal
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, Ponzan, PL-60695, Poland
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28
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Du H, Wang Q, Chen G, wang J. Photo/electro-catalytic degradation of micro- and nano-plastics by nanomaterials and corresponding degradation mechanism. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Shen M, Song B, Zhou C, Hu T, Zeng G, Zhang Y. Advanced oxidation processes for the elimination of microplastics from aqueous systems: Assessment of efficiency, perspectives and limitations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156723. [PMID: 35714750 DOI: 10.1016/j.scitotenv.2022.156723] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 06/11/2022] [Accepted: 06/12/2022] [Indexed: 05/09/2023]
Abstract
Microplastics act as a vector of heavy metals, organic pollutants, pathogens and resistance genes in the environment further aggravate the pollution of plastics. The conventional wastewater/water treatment processes can physically capture and remove most of microplastics, but the success rates varies. How to quickly remove a large amount of microplastics from aqueous system is a key research topic at present. Recently, advanced oxidation processes (AOPs) as a green elimination strategy has attracted attention because of its effective elimination, strong destruction and safety. The molecular chain of microplastics can be gradually degraded into small molecular organics until H2O and CO2 by strong oxidizing free radical produced by AOPs. Unfortunately, problematically, the elimination of microplastics in aqueous system by AOPs is recently carried out on a laboratory scale. The application and implementation of this strategy are restricted by long reaction time, low liquid phase degradation efficiency and the formation of nanoplastics. Generally, the technology is still in its infancy, and most studies are carried out under laboratory conditions. The degradation of microplastics in aqueous system also needs appropriate conditions, but it is not always feasible under field conditions in AOPs. Although AOPs can be used as a green degradation technology to eliminate microplastics in aqueous systems in theory, it still needs to be furtherly explored in practical application. Consequently, before AOPs as a green elimination strategy is successfully applied to the effective remove microplastics, more in-depth research is still required, such as the setting from single condition to complex environment, the transfer from laboratory scale to field scale, and systematic toxicity evaluation of corresponding products.
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Affiliation(s)
- Maocai Shen
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Biao Song
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Chengyun Zhou
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Tong Hu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China.
| | - Yaxin Zhang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China.
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30
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John KI, Omorogie MO, Bayode AA, Adeleye AT, Helmreich B. Environmental microplastics and their additives—a critical review on advanced oxidative techniques for their removal. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02505-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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31
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Zhang Y, Zhang T, Jia J, Lin G, Li K, Zheng L, Li X, kong Z. Construction of Zn0.2Cd0.8S/g-C3N4 nanosheet array heterojunctions toward enhanced photocatalytic reduction of CO2 in visible light. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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Chen Z, Liu X, Wei W, Chen H, Ni BJ. Removal of microplastics and nanoplastics from urban waters: Separation and degradation. WATER RESEARCH 2022; 221:118820. [PMID: 35841788 DOI: 10.1016/j.watres.2022.118820] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 06/30/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
The omnipresent micro/nanoplastics (MPs/NPs) in urban waters arouse great public concern. To build a MP/NP-free urban water system, enormous efforts have been made to meet this goal via separating and degrading MPs/NPs in urban waters. Herein, we comprehensively review the recent developments in the separation and degradation of MPs/NPs in urban waters. Efficient MP/NP separation techniques, such as adsorption, coagulation/flocculation, flotation, filtration, and magnetic separation are first summarized. The influence of functional materials/reagents, properties of MPs/NPs, and aquatic chemistry on the separation efficiency is analyzed. Then, MP/NP degradation methods, including electrochemical degradation, advanced oxidation processes (AOPs), photodegradation, photocatalytic degradation, and biological degradation are detailed. Also, the effects of critical functional materials/organisms and operational parameters on degradation performance are discussed. At last, the current challenges and prospects in the separation, degradation, and further upcycling of MPs/NPs in urban waters are outlined. This review will potentially guide the development of next-generation technologies for MP/NP pollution control in urban waters.
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Affiliation(s)
- Zhijie Chen
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Xiaoqing Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Wei Wei
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Hong Chen
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials (SKLISEM), School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia.
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33
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Rahman UU, Humayun M, Ghani U, Usman M, Ullah H, Khan A, El-Metwaly NM, Khan A. MXenes as Emerging Materials: Synthesis, Properties, and Applications. Molecules 2022; 27:molecules27154909. [PMID: 35956859 PMCID: PMC9370057 DOI: 10.3390/molecules27154909] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/19/2022] [Accepted: 07/29/2022] [Indexed: 02/03/2023] Open
Abstract
Due to their unique layered microstructure, the presence of various functional groups at the surface, earth abundance, and attractive electrical, optical, and thermal properties, MXenes are considered promising candidates for the solution of energy- and environmental-related problems. It is seen that the energy conversion and storage capacity of MXenes can be enhanced by changing the material dimensions, chemical composition, structure, and surface chemistry. Hence, it is also essential to understand how one can easily improve the structure–property relationship from an applied point of view. In the current review, we reviewed the fabrication, properties, and potential applications of MXenes. In addition, various properties of MXenes such as structural, optical, electrical, thermal, chemical, and mechanical have been discussed. Furthermore, the potential applications of MXenes in the areas of photocatalysis, electrocatalysis, nitrogen fixation, gas sensing, cancer therapy, and supercapacitors have also been outlooked. Based on the reported works, it could easily be observed that the properties and applications of MXenes can be further enhanced by applying various modification and functionalization approaches. This review also emphasizes the recent developments and future perspectives of MXenes-based composite materials, which will greatly help scientists working in the fields of academia and material science.
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Affiliation(s)
- Ubaid Ur Rahman
- Department of Chemistry, Abdul Wali Khan University, Mardan 23200, Pakistan; (U.U.R.); (U.G.); (A.K.)
| | - Muhammad Humayun
- Wuhan National Laboratory for Optoelectronics, School of Optical & Electronics Information, Huazhong University of Science and Technology, Wuhan 430074, China;
| | - Usman Ghani
- Department of Chemistry, Abdul Wali Khan University, Mardan 23200, Pakistan; (U.U.R.); (U.G.); (A.K.)
| | - Muhammad Usman
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia;
| | - Habib Ullah
- Department of Materials Science & Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea;
- Department of Chemistry, University of Sialkot, Sialkot 51040, Pakistan
| | - Adil Khan
- Department of Chemistry, Abdul Wali Khan University, Mardan 23200, Pakistan; (U.U.R.); (U.G.); (A.K.)
| | - Nashwa M. El-Metwaly
- Department of Chemistry, Faculty of Applied Science, Umm-Al-Qura University, Makkah 21955, Saudi Arabia
- Correspondence: (N.M.E.-M.); (A.K.)
| | - Abbas Khan
- Department of Chemistry, Abdul Wali Khan University, Mardan 23200, Pakistan; (U.U.R.); (U.G.); (A.K.)
- Correspondence: (N.M.E.-M.); (A.K.)
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Construction of novel noble-metal-free MoP/CdIn 2S 4 heterojunction photocatalysts: Effective carrier separation, accelerating dynamically H 2 release and increased active sites for enhanced photocatalytic H 2 evolution. J Colloid Interface Sci 2022; 628:368-377. [PMID: 35932673 DOI: 10.1016/j.jcis.2022.07.184] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/25/2022] [Accepted: 07/29/2022] [Indexed: 12/13/2022]
Abstract
Developing novel photocatalysts with high performance is significant for the practical application of photocatalytic H2 production. Herein, novel and noble-metal-free heterojunction photocatalysts contained CdIn2S4 nanoparticles and bulk MoP were prepared. The H2-production rate of optimal MoP/CdIn2S4 (MPCIS) composites achieved at 286.10 μmol g-1h-1, which was nearly 2.2 times that of CdIn2S4-1 %Pt (130.51 μmol g-1h-1). Electrochemical and PL results displayed that MoP cocatalyst could vastly boost the carrier separation efficiency of CdIn2S4. The high carrier separation efficiency maybe put down to the Fermi level rearrangement between MoP and CdIn2S4. The linear sweep voltammograms tests showed that, compared to CdIn2S4, CdIn2S4 with 30 %MoP (30MPCIS) has smaller Tafel slopes and lower H2 evolution overpotentials, which contributed to facilitate H2 release in kinetics. The 30MPCIS composites possess higher Cdl value and MoP has Pt-like electronic structure, so that MoP could offer abundant surface reaction sites of MPCIS composites for HER. Aforementioned results demonstrate that MoP may have great potential in replacing precious metal Pt for photocatalytic H2 production. It is expected that this study can provide new insights into developing the novel sulfide-based heterojunction photocatalysts with MoP as cocatalyst for resultful photocatalytic H2 generation.
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Kuchmiy SY, Shvalagin VV. 2D Metal Carbides as Components of Photocatalytic Systems for Hydrogen Production: A Review. THEOR EXP CHEM+ 2022. [DOI: 10.1007/s11237-022-09733-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Goh PS, Kang HS, Ismail AF, Khor WH, Quen LK, Higgins D. Nanomaterials for microplastic remediation from aquatic environment: Why nano matters? CHEMOSPHERE 2022; 299:134418. [PMID: 35351478 DOI: 10.1016/j.chemosphere.2022.134418] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
The contamination of microplastics in aquatic environment is regarded as a serious threat to ecosystem especially to aquatic environment. Microplastic pollution associated problems including their bioaccumulation and ecological risks have become a major concern of the public and scientific community. The removal of microplastics from their discharge points is an effective way to mitigate the adverse effects of microplastic pollution, hence has been the central of the research in this realm. Presently, most of the commonly used water or wastewater treatment technologies are capable of removing microplastic to certain extent, although they are not intentionally installed for this reason. Nevertheless, recognizing the adverse effects posed by microplastic pollution, more efforts are still desired to enhance the current microplastic removal technologies. With their structural multifunctionalities and flexibility, nanomaterials have been increasingly used for water and wastewater treatment to improve the treatment efficiency. Particularly, the unique features of nanomaterials have been harnessed in synthesizing high performance adsorbent and photocatalyst for microplastic removal from aqueous environment. This review looks into the potentials of nanomaterials in offering constructive solutions to resolve the bottlenecks and enhance the efficiencies of the existing materials used for microplastic removal. The current efforts and research direction of which studies can dedicate to improve microplastic removal from water environment with the augmentation of nanomaterial-enabled strategies are discussed. The progresses made to date have witnessed the benefits of harnessing the structural and dimensional advantages of nanomaterials to enhance the efficiency of existing microplastic treatment processes to achieve a more sustainable microplastic cleanup.
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Affiliation(s)
- P S Goh
- Advanced Membrane Technology Research Centre, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia.
| | - H S Kang
- Marine Technology Centre, Institute for Vehicle System & Engineering, School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia.
| | - A F Ismail
- Advanced Membrane Technology Research Centre, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
| | - W H Khor
- Marine Technology Centre, Institute for Vehicle System & Engineering, School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
| | - L K Quen
- Mechanical Precision Engineering Department, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, 54100, Kuala Lumpur, Malaysia
| | - D Higgins
- The Ocean Cleanup Interception B.V., 3014, JH Rotterdam, the Netherlands
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Wang W, Liu C, Zhang M, Zhang C, Cao L, Zhang C, Liu T, Kong D, Li W, Chen S. In situ synthesis of 2D/2D MXene-COF heterostructure anchored with Ag nanoparticles for enhancing Schottky photocatalytic antibacterial efficiency under visible light. J Colloid Interface Sci 2022; 608:735-748. [PMID: 34628329 DOI: 10.1016/j.jcis.2021.09.093] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/06/2021] [Accepted: 09/17/2021] [Indexed: 12/11/2022]
Abstract
It is a major challenge to combine the advantages of two kinds of two-dimensional materials to construct a heterojunction and achieve efficient photocatalytic antifouling. In this work, we covalently connected two materials MXenes and covalent organic frameworks (COFs) through the Schiff base reaction and anchored Ag nanoparticles (NPs) to prepare a Ti3C2/TpPa-1/Ag composite material with high efficiency bactericidal properties. The covalent bonding between MXene and COF greatly improved the stability of the material. Ti3C2/TpPa-1/Ag composite showed an excellent antibacterial property against S. aureus and P. aeruginosa. The fluorescence spectra of Ti3C2/TpPa-1/Ag proved that the electron transfer channels formed between the ternary materials could greatly improve the efficiency of carrier separation and prolong the life of photogenerated carriers. Density functional theory calculations showed that the synergistic catalytic effect of Ag and Ti3C2 could greatly reduce the work function along the interface, and the built-in electric field between the layers drive carrier fast migration, which effectively improve the catalytic performance.
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Affiliation(s)
- Wei Wang
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China.
| | - Cong Liu
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Mutian Zhang
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Chenyang Zhang
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Lin Cao
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Chunfeng Zhang
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Tengfei Liu
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Debao Kong
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Wen Li
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Shougang Chen
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China.
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CuS/Ag 2O nanoparticles on ultrathin g-C 3N 4 nanosheets to achieve high performance solar hydrogen evolution. J Colloid Interface Sci 2022; 615:740-751. [PMID: 35176540 DOI: 10.1016/j.jcis.2022.02.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 01/27/2022] [Accepted: 02/06/2022] [Indexed: 01/08/2023]
Abstract
Ternary heterostructures play a crucial role in improving the separation of charge carriers and fast surface reaction kinetics, which in turn helps in understanding the effective photocatalytic water splitting performance. Herein, CuS/Ag2O nanoparticles were presented on a graphitic carbon nitride (g-C3N4) surface to obtain CuS/Ag2O/g-C3N4 material using facile hydrothermal and precipitation methods. Structural and morphological studies confirmed the presence of ternary nanostructures comprising CuS, Ag2O, and g-C3N4 with nanoparticle and nanosheet morphologies. The as-synthesized CuS/Ag2O/g-C3N4 exhibited a remarkable photocatalytic H2 production of 1752 µmol.h-1.g-1cat, which is considerably superior than those of CuS and g-C3N4. The improved H2 production performance which is due to the effective interfacial CuS/Ag2O/g-C3N4 heterojunction interface and superior hole (h+) trapping capability of the CuS at the CuS/Ag2O/g-C3N4 interface. This can efficiently enhance the lifetime of photoexcited charge carriers and enhance the electron density for the production of H2. The optimum CuS/Ag2O/g-C3N4 heterostructure remained stable after 8 successive experimental cycles, although with a slight change in the H2 production rate. Therefore, this study offers a novel approach to exploit the efficacy through the synergetic effect of integrating CuS as the photocatalyst and Ag2O as the visible sensitizer, thus proposing a viable strategy of using earth-abundant material to enhance the conversion of solar energy to fuel.
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Effect of MXene Loaded on g-C3N4 Photocatalyst for the Photocatalytic Degradation of Methylene Blue. ENERGIES 2022. [DOI: 10.3390/en15030955] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Photocatalytic degradation is one of the environmentally friendly methods used in treating dye wastewater. In this study, a series of MXene/g-C3N4 heterostructure photocatalysts with different loading amounts of MXene (1, 4, 8, and 12 wt.%) were successfully synthesized via the wet impregnation method and their photocatalytic activity was evaluated via the degradation of methylene blue under visible-light irradiation. As such, the 1 wt.% MXene/g-C3N4 heterostructure photocatalyst achieved a high degradation of methylene blue compared to the pure g-C3N4 under visible-light illumination of 180 min. This significant improvement was attributed to the intimate interfacial contact, evidently from the FESEM analysis, which allows the smooth photocharge carriers to transport between g-C3N4 and MXene. Additionally, the larger BET surface area demonstrated by the 1 wt.% MXene/g-C3N4 heterostructure allowed this sample to have higher adsorption of dye molecules and provided a higher number of reactive sites, which was beneficial for the enhancement of the photocatalytic activity. Nevertheless, it was found that the excessive loading of MXene can substantially impede photocatalytic activity. This was attributed to the decrease in the active sites, as well as the weakened crystallinity of the MXene/g-C3N4 heterostructure photocatalyst, evident from the FTIR and XRD analysis. All in all, this study has shown the potential of the MXene/g-C3N4 photocatalyst as a promising photocatalyst for highly efficient wastewater treatment applications.
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