1
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Li Y, Li R, Sun Z, Guo L, Wang Y, Ma X, Li H, Lei T, Fan C, Liu J. Promoted photocatalytic N 2 fixation to ammonia over floatable TiO 2/Bi/Carbon cloth through relay pathway. J Colloid Interface Sci 2024; 664:198-209. [PMID: 38460384 DOI: 10.1016/j.jcis.2024.02.214] [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: 01/26/2024] [Revised: 02/27/2024] [Accepted: 02/29/2024] [Indexed: 03/11/2024]
Abstract
The floatable photocatalyst at N2-water interface allows the adequate supply of N2 reactant and the utilization of photothermal energy for photocatalytic N2 fixation, however, the presence of non-volatile NO3- product poses a challenge to the stability as it easily covers the catalytic active sites. Herein, a floatable TiO2/Bi/CC (Carbon cloth) photocatalyst was designed, in which the non-volatile NO3- can be transformed to the volatile NH3 via the newly synergistic relay photocatalysis pathway (N2 → NO3- → NH3) between TiO2 (N2 → NO3-) and Bi (NO3- → NH3). Attractively, the spontaneous NO3- → NO2- step occurs on Bi component to promote the relay pathway performing. Therefore, TiO2/Bi/CC system displays better long-term stability than TiO2/CC, and moreover, it achieves a higher NH3 yield of 8.28 mmol L-1 h-1 g-1 (i.e. 4.14 mmol h-1 m-2) than that 1.46 mmol L-1 h-1 g-1 for TiO2/Bi powder. Importantly, the N2 fixation products by TiO2/Bi/CC effectively promote lettuce growth and enhance lettuce nutrient contents, which further validates the feasibility of this system in large-scale application of crop cultivation.
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Affiliation(s)
- Yaru Li
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Rui Li
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China.
| | - Zijun Sun
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Lijun Guo
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Yawen Wang
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Xiaoli Ma
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Houfen Li
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Tao Lei
- College of Hydraulic Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China.
| | - Caimei Fan
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Jianxin Liu
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, PR China.
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2
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Lu Q, Wang X, Fan X, Lin J, Hu J, Duan G, Yu H, Geng Z, Wang X, Dai H, Liu F, Wen L, Geng H. Wintersweet-like Nanohybrids of Titanium-doped Cerium Vanadate Loaded with Polypyrrole for Tumor Theranostic. Adv Healthc Mater 2024:e2400830. [PMID: 38857527 DOI: 10.1002/adhm.202400830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/25/2024] [Indexed: 06/12/2024]
Abstract
Compromises between enhanced on-targeting reactivity and precise real-time monitoring in the tumor microenvironment (TME) are the main roadblocks for catalytic cancer therapy. The hallmark of a high level of hydrogen peroxide (H2O2) and acidic extracellular environment of the hypoxia solid tumor can underpin therapeutic and tracking performance. Herein, this work provides an activatable wintersweet-like nanohybrid consisting of titanium (Ti) doped cerium vanadate nanorods with the modification of polypyrrole (PPy) nanoparticles (CeVO4-Ti@PPy) for combinatorial therapies of breast carcinoma. The Ti dopants in the size-controllable CeVO4 nanorods lower the energy barrier (0.5 eV) of the rate-determining steps and elaborate peroxidase-like (POD-like) activities to improve the generation of toxic hydroxyl radical (·OH) according to the density functional theory (DFT) calculation. The multiple enzyme-like activities, including the intrinsic glutathione peroxidase (GPx) and catalase (CAT), achieve a record-high therapeutic efficiency. Coupling this oxidative stress with the photothermal effects of PPy enables enhanced catalytic tumor necrosis. The exterior PPy heterogeneous structure can be further doped with protons in the local acidic environment to intensify photoacoustic signals, allowing the non-invasive accurate tracking of tumors. The theranostic performance displayed negligible attenuated signals in near-infrared (NIR) windows. This organic-inorganic nanohybrid with a heterogeneous structure provides the potential to improve the overall outcomes of catalytic therapy.
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Affiliation(s)
- Qianyun Lu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003, China
- Institute of Biomedical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, 518055, China
| | - Xiaotong Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, Jiangsu, 215123, China
| | - Xin Fan
- Institute of Biomedical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, 518055, China
| | - Jinguo Lin
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jiayi Hu
- Institute of Biomedical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, 518055, China
| | - Guangxin Duan
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, Jiangsu, 215123, China
| | - Huimin Yu
- Department of Chemical Engineering, Center for Synthetic and Systems Biology, Tsinghua University, Beijing, 100084, China
| | - Zihan Geng
- Tsinghua-Berkeley Shenzhen Institute, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, 518055, China
| | - Xingang Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003, China
| | - Hongliang Dai
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003, China
| | - Feng Liu
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Ling Wen
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, Jiangsu, 215123, China
| | - Hongya Geng
- Institute of Biomedical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, 518055, China
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3
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Liu LX, Liu C, Li B, Dong YM, Wang XH, Zhang X. Tuning interfacial oxygen vacancy level of bismuth oxybromide to enhance photocatalytic degradation of bisphenol A. CHEMOSPHERE 2024; 356:141911. [PMID: 38583539 DOI: 10.1016/j.chemosphere.2024.141911] [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: 02/08/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
Oxygen vacancies (OVs) have garnered significant interest for their role as active sites, enhancing the catalytic efficiency of various catalysts. Despite their widespread application in environmental purification processes, the generation of OVs conventionally depends on high-temperature conditions and strong reducing agents for the extraction of surface partial oxygen atoms from catalysts. In this work, bismuth oxybromide (BiOBr) nanosheets with varying levels of OVs were synthesized via a simple and effective solvothermal method. This novel method affords precise control over the conduction band (CB) and valence band (VB) positions of BiOBr. The presence of different OVs exhibited varying photocatalytic efficiencies in the degradation of bisphenol A (BPA) under visible light irradiation, with higher levels of OVs resulting in superior photocatalytic performance. Furthermore, radical scavenger experiments demonstrated that superoxide oxides (O2•-) and holes (h+) were the primary reactive oxygen species for BPA degradation. Additionally, BiOBr-OVs exhibited excellent anti-interference and stability in water matrices containing diverse inorganic anions and organic compounds. This work provides a simple and effective approach for the fine-regulating of catalysts through interfacial defect engineering, paving the way for their practical application in environmental decontamination.
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Affiliation(s)
- Le-Xuan Liu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China
| | - Chang Liu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China
| | - Bin Li
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China
| | - Ya-Meng Dong
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China
| | - Xin-Hui Wang
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China
| | - Xing Zhang
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China.
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4
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Drdova S, Gao M, Sambalova O, Pauer R, Zhou Z, Dimitriadou S, Schmidt-Ott A, Wang J. Precursor- and waste-free synthesis of spark-ablated nanoparticles with enhanced photocatalytic activity and stability towards airborne organic pollutant degradation. ENVIRONMENTAL SCIENCE. NANO 2024; 11:1023-1043. [PMID: 38496350 PMCID: PMC10939172 DOI: 10.1039/d3en00348e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 12/11/2023] [Indexed: 03/19/2024]
Abstract
Photocatalyst synthesis typically involves multiple steps, expensive precursors, and solvents. In contrast, spark ablation offers a simple process of electrical discharges in a gap between two electrodes made from a desirable material. This enables a precursor- and waste-free generation of pure metal oxide nanoparticles or mixtures of various compositions. This study presents a two-step method for the production of photocatalytic filters with deposited airborne MnOx, TiO2, and ZnO nanoparticles using spark ablation and calcination processes. The resulting MnOx and TiO2 filters demonstrated almost twice the activity with outstanding performance stability, as compared to sol-gel MnO2 and commercial TiO2. The introduced method is not only simple, precursor- and waste-free, and leads to superior performance for the case studied, but it also has future potential due to its versatility. It can easily produce mixed and doped materials with further improved properties, making it an interesting avenue for future research.
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Affiliation(s)
- Sarka Drdova
- Institute of Environmental Engineering, ETH Zurich 8093 Zürich Switzerland
- Laboratory for Advanced Analytical Technologies, Empa - Swiss Federal Laboratories for Materials Science and Technology 8600 Dübendorf Switzerland
| | - Min Gao
- Institute of Environmental Engineering, ETH Zurich 8093 Zürich Switzerland
- Laboratory for Advanced Analytical Technologies, Empa - Swiss Federal Laboratories for Materials Science and Technology 8600 Dübendorf Switzerland
| | - Olga Sambalova
- Laboratory for Advanced Analytical Technologies, Empa - Swiss Federal Laboratories for Materials Science and Technology 8600 Dübendorf Switzerland
| | - Robin Pauer
- Electron Microscopy Center, Empa - Swiss Federal Laboratories for Materials Science and Technology 8600 Dübendorf Switzerland
| | - Zhouping Zhou
- Chemical Engineering Department, Delft University of Technology 2600 AA Delft The Netherlands
| | | | - Andreas Schmidt-Ott
- Chemical Engineering Department, Delft University of Technology 2600 AA Delft The Netherlands
- VSPARTICLE B.V 2629 JD Delft The Netherlands
| | - Jing Wang
- Institute of Environmental Engineering, ETH Zurich 8093 Zürich Switzerland
- Laboratory for Advanced Analytical Technologies, Empa - Swiss Federal Laboratories for Materials Science and Technology 8600 Dübendorf Switzerland
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5
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Xie JF, Li D, Huo HW, Huang YY, Wu P, Zhao QB, Zheng YM. Activating nickel foam with trace titanium oxide for enhanced water oxidation. Chem Commun (Camb) 2024; 60:2914-2917. [PMID: 38372145 DOI: 10.1039/d3cc05956a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Nickel-based electrocatalysts for water oxidation suffer from low activity and poor stability. In this work, 0.015 mg cm-2 TiO2 nanosheets anchored on Ni foam addressed these problems after electrochemical activation. In situ investigations, including Raman spectra, corroborated the enhanced generation of highly active Ni(III)-O-O species on Ni foam in the presence of trace TiO2.
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Affiliation(s)
- Jia-Fang Xie
- CAS Key Laboratory of Urban Pollutant Conversion, Research Center of Urban Carbon Neutrality, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ding Li
- CAS Key Laboratory of Urban Pollutant Conversion, Research Center of Urban Carbon Neutrality, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hui-Wen Huo
- CAS Key Laboratory of Urban Pollutant Conversion, Research Center of Urban Carbon Neutrality, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi-Yin Huang
- Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian 350117, China
| | - Peng Wu
- CAS Key Laboratory of Urban Pollutant Conversion, Research Center of Urban Carbon Neutrality, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
| | - Quan-Bao Zhao
- CAS Key Laboratory of Urban Pollutant Conversion, Research Center of Urban Carbon Neutrality, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Ming Zheng
- CAS Key Laboratory of Urban Pollutant Conversion, Research Center of Urban Carbon Neutrality, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
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6
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Yang Z, Zhou H, Zhang X, Ma X, Zang X, Ding Y, Zhang J, He D. Simultaneous chelated heavy metals removal and sludge recovery through titanium coagulation: From waste to resource. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168821. [PMID: 38016569 DOI: 10.1016/j.scitotenv.2023.168821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/07/2023] [Accepted: 11/22/2023] [Indexed: 11/30/2023]
Abstract
Green methods for chelated heavy metals treatment and recovery are essential for coordinated development of resources and environment. Herein, a simple and competent method, titanium salt (TiCl4) coagulation was developed to remove and recycle chelated heavy metals. Our results revealed that this method proved to be effective for metals-citrate [Cu(II), Ni(II), Zn(II) and Cr(VI)], achieving removal efficiencies of 95 %, 92 %, 99 %, and 99 % within 30 min, surpassing direct alkaline precipitation and well-used Fe(III) coagulation. Whereafter, the copper-containing sludge was successfully transformed into copper-doped titanium dioxide (TiO2) photocatalysts by facile calcination. Through comprehensively investigating physicochemical properties by a suite of characterization techniques, we confirmed that doping of Cu induced bandgap narrowing, high specific surface area as well as the formation of oxygen vacancy. Accordingly, the recycling photocatalysts showed remarkable enhanced photocatalytic performance than the pristine TiO2, achieving improvement in the degradation efficiency of 82 %, 61 % and 67 % for carbamazepine(CBZ), bisphenol A (BPA) and methyl orange (MO). In addition, both radical (OH and O2-) and non-radical (1O2 and h+) pathways synergistically contributed to the removal of organic pollutants during photocatalysis. Ultimately, based on economic feasibility assessment and life cycle assessment (LCA), the copper-containing titanium coagulation sludge reuse for photocatalyst could bring lower carbon emissions, reduced environmental risks and higher economic benefits. The elucidation of this study provides new insights into the removal and recycle of chelated heavy metals from wastewater by using an environment-friendly and cost-effective method.
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Affiliation(s)
- Zhengheng Yang
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
| | - Hongbo Zhou
- Shenzhen Pangu Environmental Protection Technology Co. Ltd, Shenzhen 518055, PR China
| | - Xinfei Zhang
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Xiaoming Ma
- Shenzhen Pangu Environmental Protection Technology Co. Ltd, Shenzhen 518055, PR China
| | - Xi Zang
- Guangdong Kaitian Environmental Governance Co. Ltd, Zhuhai 519000, PR China
| | - Yuxin Ding
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Jiafeng Zhang
- National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China.
| | - Di He
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
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7
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Xie Z, Meng Q, Hu Y, Tang Y, Wang K, Zhang Y, Yu X, Zhao K, Xu C. Amorphous titanium dioxide with abundant defects induced by incorporation of silicon dioxide: A potential non-radical activator of hydrogen peroxide. J Colloid Interface Sci 2024; 653:1006-1017. [PMID: 37778150 DOI: 10.1016/j.jcis.2023.09.143] [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: 07/14/2023] [Revised: 09/22/2023] [Accepted: 09/23/2023] [Indexed: 10/03/2023]
Abstract
Catalysts based on titanium dioxide (TiO2) have demonstrated a significant potential for oxidizing intractable organic pollutants in heterogenous Fenton-like reactions, even in the absence of light irradiation. In this study, defective amorphous TiO2 enriched Ti3+ and oxygen vacancies (Ov) was synthesized by incorporation of silicon dioxide (SiO2) via a simple sol-gel method. Based on a systematic exploration, an optimal amount of SiO2 was found to be crucial in promoting the formation of Ov and Ti3+, which was achieved by maximizing the non-hexacoordinate structure (Ti4/5/7c) in amorphous TiO2. Furthermore, an unusual singlet oxygen (1O2) based non-radical mechanism was confirmed. It was proposed that the hydroxyl radicals (•OH) produced by Ti3+ active sites during hydrogen peroxide (H2O2) activation may adsorb on the TiO2 surface for extended periods, owing to their favorable interactions with the surface Ov and hydroxyl groups (-OH), thus facilitating their transformation to 1O2. Moreover, the optimized catalyst exhibited favorably catalytic performance across a broad pH range (3-11), making it a promising candidate for applications in rigorous environmental conditions.
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Affiliation(s)
- Zhangwen Xie
- Department of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, PR China
| | - Qingnan Meng
- Department of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, PR China; Shaanxi Province Key Laboratory of Corrosion and Protection, Xi'an University of Technology, Xi'an 710048, PR China.
| | - Yanzhe Hu
- Department of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, PR China
| | - Yufei Tang
- Department of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, PR China; Shaanxi Province Key Laboratory of Corrosion and Protection, Xi'an University of Technology, Xi'an 710048, PR China
| | - Kai Wang
- Department of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, PR China
| | - Yagang Zhang
- Department of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, PR China
| | - Xiaojing Yu
- Department of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, PR China; Shaanxi Province Key Laboratory of Corrosion and Protection, Xi'an University of Technology, Xi'an 710048, PR China
| | - Kang Zhao
- Department of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, PR China; Shaanxi Province Key Laboratory of Corrosion and Protection, Xi'an University of Technology, Xi'an 710048, PR China
| | - Chunjie Xu
- Department of Materials Science and Engineering, Xi'an University of Technology, Xi'an, 710048, PR China; Xi'an Key Laboratory of Advanced Magnesium Alloy Additive Manufacturing and Precision Forming, Xi'an 710048, PR China
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8
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Chen JJ. Interfacial Electron Transfer in Chemical and Biological Transformation of Pollutants in Environmental Catalysis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:21540-21549. [PMID: 38086095 DOI: 10.1021/acs.est.3c05608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Interfacial electron transfer (IET) is essential for chemical and biological transformation of pollutants, operative across diverse lengths and time scales. This Perspective presents an array of multiscale molecular simulation methodologies, supplemented by in situ monitoring and imaging techniques, serving as robust tools to decode IET enhancement mechanisms such as interface molecular modification, catalyst coordination mode, and atomic composition regulation. In addition, three IET-based pollutant transformation systems, an electrocatalytic oxidation system, a bioelectrochemical spatial coupling system, and an enzyme-inspired electrocatalytic system, were developed, demonstrating a high effect in transforming and degrading pollutants. To improve the effectiveness and scalability of IET-based strategies, the refinement of these systems is necessitated through rigorous research and theoretical exploration, particularly in the context of practical wastewater treatment scenarios. Future endeavors aim to elucidate the synergy between biological and chemical modules, edit the environmental functional microorganisms, and harness machine learning for designing advanced environmental catalysts to boost efficiency. This Perspective highlights the powerful potential of IET-focused environmental remediation strategies, emphasizing the critical role of interdisciplinary research in addressing the urgent global challenge of water pollution.
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Affiliation(s)
- Jie-Jie Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
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9
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Xu M, Gao C, Zhang X, Liang X, Hu Y, Wang F. Development of SDS-Modified PbO 2 Anode Material Based on Ti 3+ Self-Doping Black TiO 2NTs Substrate as a Conductive Interlayer for Enhanced Electrocatalytic Oxidation of Methylene Blue. Molecules 2023; 28:6993. [PMID: 37836836 PMCID: PMC10574806 DOI: 10.3390/molecules28196993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 09/23/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
Efficient and stable electrode materials are urgently required for wastewater treatment in the electrocatalytic degradation of toxic and refractory organic pollutants. Ti3+ self-doping black TiO2 nanotube arrays (Ti/B-TiO2-NTs) as an interlayer were used for preparing a novel PbO2 electrode via an electrochemical reduction technology, and a sodium dodecyl sulfate (SDS)-modified PbO2 catalytic layer was successfully achieved via an electrochemical deposition technology. The physicochemical characterization tests showed that the Ti/B-TiO2-NTs/PbO2-SDS electrodes have a denser surface and finer grain size with the introduction of Ti3+ in the interlayer of Ti/TiO2-NTs and the addition of SDS in the active layer of PbO2. The electrochemical characterization results showed that the Ti3+ self-doping black Ti/TiO2-NTs/PbO2-SDS electrode had higher oxygen evolution potential (2.11 V vs. SCE), higher electrode stability, smaller charge-transfer resistance (6.74 Ω cm-2), and higher hydroxyl radical production activity, leading to it possessing better electrocatalytic properties. The above results indicated that the physicochemical and electrochemical characterization of the PbO2 electrode were all enhanced significantly with the introduction of Ti3+ and SDS. Furthermore, the Ti/B-TiO2-NTs/PbO2-SDS electrodes displayed the best performance on the degradation of methylene blue (MB) in simulated wastewater via bulk electrolysis. The removal efficiency of MB and the chemical oxygen demand (COD) could reach about 99.7% and 80.6% under the optimal conditions after 120 min, respectively. The pseudo-first-order kinetic constant of the Ti/B-TiO2-NTs/PbO2-SDS electrode was 0.03956 min-1, which was approximately 3.18 times faster than that of the Ti/TiO2-NTs/PbO2 electrode (0.01254 min-1). In addition, the Ti/B-TiO2-NTs/PbO2-SDS electrodes showed excellent stability and reusability. The degradation mechanism of MB was explored via the experimental identification of intermediates. In summary, the Ti3+ self-doping black Ti/TiO2-NTs/PbO2-SDS electrode is a promising electrode in treating wastewater.
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Affiliation(s)
- Mai Xu
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
| | - Chunli Gao
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China;
| | - Xiaoyan Zhang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
| | - Xian Liang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
| | - Yunhu Hu
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
| | - Fengwu Wang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
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10
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Xing C, Yang L, He R, Spadaro MC, Zhang Y, Arbiol J, Li J, Poudel B, Nozariasbmarz A, Li W, Lim KH, Liu Y, Llorca J, Cabot A. Brookite TiO 2 Nanorods as Promising Electrochromic and Energy Storage Materials for Smart Windows. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2303639. [PMID: 37608461 DOI: 10.1002/smll.202303639] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 07/15/2023] [Indexed: 08/24/2023]
Abstract
Electrochromic smart windows (ESWs) offer an attractive option for regulating indoor lighting conditions. Electrochromic materials based on ion insertion/desertion mechanisms also present the possibility for energy storage, thereby increasing overall energy efficiency and adding value to the system. However, current electrochromic electrodes suffer from performance degradation, long response time, and low coloration efficiency. This work aims to produce defect-engineered brookite titanium dioxide (TiO2 ) nanorods (NRs) with different lengths and investigate their electrochromic performance as potential energy storage materials. The controllable synthesis of TiO2 NRs with inherent defects, along with smaller impedance and higher carrier concentrations, significantly enhances their electrochromic performance, including improved resistance to degradation, shorter response times, and enhanced coloration efficiency. The electrochromic performance of TiO2 NRs, particularly longer ones, is characterized by fast switching speeds (20 s for coloration and 12 s for bleaching), high coloration efficiency (84.96 cm2 C-1 at a 600 nm wavelength), and good stability, highlighting their potential for advanced electrochromic smart window applications based on Li+ ion intercalation.
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Affiliation(s)
- Congcong Xing
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
- Institute of Energy Technologies, Department of Chemical Engineering and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, EEBE, Barcelona, 08019, Spain
| | - Linlin Yang
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
- Departament d'Enginyeria Electronica i Biomedica, Universitat de Barcelona, Barcelona, 08028, Spain
| | - Ren He
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
- Departament d'Enginyeria Electronica i Biomedica, Universitat de Barcelona, Barcelona, 08028, Spain
| | - Maria Chiara Spadaro
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, 08193, Spain
| | - Yu Zhang
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
| | - Jordi Arbiol
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, 08193, Spain
- ICREA, Pg. Lluis Companys 23, Barcelona, 08010, Spain
| | - Junshan Li
- Institute for Advanced Study, Chengdu University, Chengdu, Sichuan, 610106, China
| | - Bed Poudel
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Amin Nozariasbmarz
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Wenjie Li
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Khak Ho Lim
- Institute of Zhejiang University-Quzhou, Quzhou, Zhejiang, 324000, China
| | - Yu Liu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China
| | - Jordi Llorca
- Institute of Energy Technologies, Department of Chemical Engineering and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, EEBE, Barcelona, 08019, Spain
| | - Andreu Cabot
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
- ICREA, Pg. Lluis Companys 23, Barcelona, 08010, Spain
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11
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Chen C, Wu M, Ma C, Song M, Jiang G. Efficient Photo-Assisted Thermal Selective Oxidation of Toluene Using N-Doped TiO 2. ACS OMEGA 2023; 8:21026-21031. [PMID: 37332816 PMCID: PMC10268642 DOI: 10.1021/acsomega.3c01887] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/19/2023] [Indexed: 06/20/2023]
Abstract
Selective oxidation of toluene is a key reaction to produce high value-added products but remains a big challenge. In this study, we introduce a nitrogen-doped TiO2 (N-TiO2) catalyst to create more Ti3+ and oxygen vacancy (OV), which act as active sites for selective oxidation of toluene via activating O2 to superoxide radical (•O2-). Interestingly, the resulting N-TiO2-2 exhibited an outstanding photo-assisted thermal performance with a product yield of 209.6 mmol·gcat-1 and a toluene conversion of 10960.0 μmol·gcat-1·h-1, which are 1.6 and 1.8 times greater than those obtained under thermal catalysis. We showed that the enhanced performance under photo-assisted thermal catalysis was attributed to more active species generation by making full use of photogenerated carriers. Our work suggests a viewpoint to apply a noble-metal-free TiO2 system in the selective oxidation of toluene under solvent-free conditions.
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Affiliation(s)
- Cheng Chen
- Key
Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingge Wu
- Key
Laboratory of Photochemistry, CAS Research/Education Center for Excellence
in Molecular Sciences, Institute of Chemistry,
Chinese Academy of Sciences, Beijing 100190, China
| | - Chunyan Ma
- Key
Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
| | - Maoyong Song
- Key
Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
| | - Guibin Jiang
- University
of Chinese Academy of Sciences, Beijing 100049, China
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
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12
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Chen Z, Yu S, Liu J, Zhang Y, Wang Y, Yu J, Yuan M, Zhang P, Liu W, Zhang J. C, F co-doping Ag/TiO 2 with visible light photocatalytic performance toward degrading Rhodamine B. ENVIRONMENTAL RESEARCH 2023:116311. [PMID: 37290622 DOI: 10.1016/j.envres.2023.116311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 05/29/2023] [Accepted: 05/31/2023] [Indexed: 06/10/2023]
Abstract
The organic pollutants in industrial wastewater continuously endanger human health. Therefore, effective treatment of organic pollutants is very urgent. Photocatalytic degradation technology is an excellent solution to remove it. TiO2 photocatalysts are easy to prepare and have high catalytic activity, unfortunately, TiO2 only absorbs ultraviolet light limiting its utilization of visible light. In this study, a facile environmentally friendly synthesis of Ag-coated on micro-wrinkled TiO2-based catalysts in order to extend the absorption of Visible light. Firstly, a fluorinated titanium dioxide precursor was prepared by a one-step solvothermal method, and the precursor was calcined at high temperature in a nitrogen atmosphere to form a carbon dopant, and then a surface silver-deposited carbon/fluorine co-doped TiO2 photocatalyst C/F-Ag-TiO2 was prepared by a hydrothermal method The results showed that the Ag was coated on the wrinkled TiO2 layer and C/F-Ag-TiO2 photocatalyst was synthetized successfully. Benefit from the synergistic effect of doped carbon and fluorine atoms in combination with the quantum size effect of the surface silver nanoparticles, the band gap energy of C/F-Ag-TiO2 (2.56 eV) is obviously lower than anatase (3.2eV). The photocatalyst achieved an impressive degradation rate of 84.2% for Rhodamine B in 4 h, with a degradation rate constant of 0.367 h-1, which was 17 times higher than that of P25 under visible light. Therefore, the C/F-Ag-TiO2 composite is a promising candidate as a highly efficient photocatalyst for environmental remediation.
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Affiliation(s)
- Zhengyang Chen
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Shui Yu
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Jianping Liu
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Yamei Zhang
- School of Science, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
| | - Yuchen Wang
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Jiangyi Yu
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Ming Yuan
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Pengchao Zhang
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Wen Liu
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
| | - Jiaoxia Zhang
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
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13
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Castro-Godoy WD, Schmidt LC, Flores-Oña D, Pérez-Prieto J, Galian RE, Argüello JE. Linker-Assisted CdS-TiO 2 Nanohybrids as Reusable Visible Light Photocatalysts for the Oxidative Hydroxylation of Arylboronic Acids. J Org Chem 2023; 88:6489-6497. [PMID: 36930860 DOI: 10.1021/acs.joc.2c02964] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
A variety of phenols have been obtained in aqueous media with moderate to excellent chemical yields (≤100%) by using arylboronic acids and esters as substrates, a robust CdS-TiO2 nanohybrid as a heterogeneous photocatalyst, visible light irradiation (467 nm), and an O2-saturated atmosphere. The nanohybrid was prepared through a linker-assisted methodology that uses mercapto alkanoic acids as the organic linkers. The nanohybrid showed improved photocatalytic activity in the hydroxylation of substituted arylboronic acids and phenyl boronic esters compared with that of pristine CdS quantum dots. The nanohybrid can be reused in up to five photocatalytic cycles with ∼90% of its outstanding activity preserved.
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Affiliation(s)
- Willber D Castro-Godoy
- INFIQC-CONICET-UNC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.,CENSALUD-UES, Departamento de Química, Física y Matemática, Facultad de Química y Farmacia, Universidad de El Salvador, Final Av. Mártires y Héroes del 30 de Julio, San Salvador 1101, El Salvador
| | - Luciana C Schmidt
- INFIQC-CONICET-UNC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.,Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain
| | - Diego Flores-Oña
- Institute of Molecular Science (ICMol), University of Valencia, Catedrático José Beltrán 2, Paterna 46980, Valencia, Spain.,Facultad de Ingeniería Química Universidad Central de Ecuador, Rither y Bolivia, Ciudadela Universitaria, 170521 Quito, Ecuador
| | - Julia Pérez-Prieto
- Institute of Molecular Science (ICMol), University of Valencia, Catedrático José Beltrán 2, Paterna 46980, Valencia, Spain
| | - Raquel E Galian
- Institute of Molecular Science (ICMol), University of Valencia, Catedrático José Beltrán 2, Paterna 46980, Valencia, Spain
| | - Juan E Argüello
- INFIQC-CONICET-UNC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina
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14
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Xiao XY, Song ZY, Zhang CC, Zhao YH, Gao ZW, Chen SH, Li PH, Sun YF, Yang M, Huang XJ. Interface catalytic regulation via electron rearrangement and hydroxyl radicals triggered by oxygen vacancies and heavy metal ions. Chem Sci 2023; 14:2960-2970. [PMID: 36937602 PMCID: PMC10016426 DOI: 10.1039/d2sc06762e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 02/17/2023] [Indexed: 02/19/2023] Open
Abstract
Although the enhanced intrinsic activities of some nano-metal oxides are obtained by manufacturing oxygen vacancies (OVs), the effect of multiple roles of OVs is ambiguous. Herein, an interface catalytic regulation via electron rearrangement and hydroxyl radicals (˙OH) was proposed with the designed ZrO2 hollow sphere rich in OVs (Vo-rich ZrO2). Surprisingly, it was shown that the catalytic ability of Vo-rich ZrO2 was 9.9 times higher than that of ZrO2 with little OVs in electrochemical catalytic reduction of Pb(ii). It was found that the generation of Zr2+ and Zr3+ caused by OVs results in the rearrangement of abundant free electrons to facilitate the catalytic reaction rates. The longer bond length between Vo-rich ZrO2 and reactants, and the lower adsorption energy are beneficial for reactants to desorb, improving the conversion rates. Besides, the produced ˙OH were captured which were induced by OVs and trace divalent heavy metal ions in in situ electron paramagnetic resonance (EPR) experiments, contributing to lowering the energy barriers. This study not only revealed the enhanced interface catalytic effect of electron rearrangement and generated ˙OH triggered by OVs, but also provided unique insights into interface catalytic regulation on nano-metal oxides simulated by OVs.
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Affiliation(s)
- Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology, Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 P. R. China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 P. R. China
| | - Zong-Yin Song
- Key Laboratory of Environmental Optics and Technology, Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 P. R. China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 P. R. China
| | - Chong-Chong Zhang
- College of Mechanical and Automotive Engineering, Anhui Polytechnic University Wuhu Anhui 241000 PR China
| | - Yong-Huan Zhao
- Key Laboratory of Environmental Optics and Technology, Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 P. R. China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 P. R. China
| | - Zhi-Wei Gao
- Key Laboratory of Environmental Optics and Technology, Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 P. R. China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 P. R. China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 P. R. China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 P. R. China
| | - Yu-Feng Sun
- College of Mechanical and Automotive Engineering, Anhui Polytechnic University Wuhu Anhui 241000 PR China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 P. R. China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 P. R. China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 P. R. China
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15
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Man S, Yin Z, Zhou S, Pameté E, Xu L, Bao H, Yang W, Mo Z, Presser V, Li X. Novel Sb-SnO 2 Electrode with Ti 3+ Self-Doped Urchin-Like Rutile TiO 2 Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants. CHEMSUSCHEM 2023; 16:e202201901. [PMID: 36524753 DOI: 10.1002/cssc.202201901] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Stable and efficient SnO2 electrodes are very promising for effectively degrading refractory organic pollutants in wastewater treatment. In this regard, we firstly prepared Ti3+ self-doped urchin-like rutile TiO2 nanoclusters (TiO2-x NCs) on a Ti mesh substrate by hydrothermal and electroreduction to serve as an interlayer for the deposition of Sb-SnO2 . The TiO2-x NCs/Sb-SnO2 anode exhibited a high oxygen evolution potential (2.63 V vs. SCE) and strong ⋅OH generation ability for the enhanced amount of absorbed oxygen species. Thus, the degradation results demonstrated its good rhodamine B (RhB), methylene blue (MB), alizarin yellow R (AYR), and methyl orange (MO) removal performance, with the rate constant increased 5.0, 1.9, 1.9, and 4.7 times, respectively, compared to the control Sb-SnO2 electrode. RhB and AYR degradation mechanisms are also proposed based on the results of high-performance liquid chromatography coupled with mass spectrometry and quenching experiments. More importantly, this unique rutile interlayer prolonged the anode lifetime sixfold, given its good lattice match with SnO2 and the three-dimensional concave-convex structure. Consequently, this work paves a new way for designing the crystal form and structure of the interlayers to obtain efficient and stable SnO2 electrodes for addressing dye wastewater problems.
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Affiliation(s)
- Shuaishuai Man
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China
- INM - Leibniz Institute for New Materials, 66123, Saarbrücken, Germany
| | - Zehao Yin
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China
| | - Shanbin Zhou
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China
| | - Emmanuel Pameté
- INM - Leibniz Institute for New Materials, 66123, Saarbrücken, Germany
| | - Lei Xu
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China
| | - Hebin Bao
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China
| | - Wenjing Yang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China
| | - Zhihong Mo
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China
| | - Volker Presser
- INM - Leibniz Institute for New Materials, 66123, Saarbrücken, Germany
- Department of Materials Science and Engineering, Saarland University, 66123, Saarbrücken, Germany
- Saarene - Saarland Center for Energy Materials and Sustainability, Saarland University, Campus D4 2, 66123, Saarbrücken, Germany
| | - Xueming Li
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, P. R. China
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16
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Li XR, Meng XZ, Zhang QH, Wu LK, Sun QQ, Deng HQ, Sun SJ, Cao FH. Insight into oxygen reduction activity and pathway on pure titanium using scanning electrochemical microscopy and theoretical calculations. J Colloid Interface Sci 2023; 643:551-562. [PMID: 36990868 DOI: 10.1016/j.jcis.2023.03.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/05/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023]
Abstract
HYPOTHESIS Unlike noble metals, the oxygen reduction reaction (ORR) behavior on Ti is more complicated due to its spontaneously formed oxide film. This film results in sluggish ORR kinetics and tends to be reduced within ORR potential region, causing the weak and multi-reaction coupled current. Though Ti is being used in chemical and biological fields, its ORR research is still underexplored. EXPERIMENTS We innovatively employed the modified reactive tip generation-substrate collection (RTG/SC) mode of scanning electrochemical microscopy (SECM) with high efficiency of 97.2 % to quantitatively study the effects of film characteristics, solution environment (pH, anion, dissolved oxygen), and applied potential on the ORR activity and selectivity of Ti. Then, density functional theory (DFT) and molecular dynamics (MD) analyses were employed to elucidate its ORR behavior. FINDINGS On highly reduced Ti, film properties dominate ORR behavior with promoted 4e- selectivity. Rapid film regeneration in alkaline/O2-saturated conditions inhibits ORR activity. Besides, ORR is sensitive to anion species in neutral solutions while showing enhanced 4e- reduction in alkaline media. All the improved 4e- selectivities originate from the hydrogen bond/electrostatic stabilization effect, while the decayed ORR activity by Cl- arises from the suppressed O2 adsorption. This work provides theoretical support and possible guidance for ORR research on oxide-covered metals.
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Affiliation(s)
- Xin-Ran Li
- School of Materials, Sun Yat-sen University, Shenzhen 518107, China
| | - Xian-Ze Meng
- School of Materials, Sun Yat-sen University, Shenzhen 518107, China.
| | - Qin-Hao Zhang
- School of Materials, Sun Yat-sen University, Shenzhen 518107, China
| | - Lian-Kui Wu
- School of Materials, Sun Yat-sen University, Shenzhen 518107, China
| | - Qing-Qing Sun
- School of Materials, Sun Yat-sen University, Shenzhen 518107, China
| | - Hai-Qiang Deng
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Shu-Juan Sun
- School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Fa-He Cao
- School of Materials, Sun Yat-sen University, Shenzhen 518107, China.
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17
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Abstract
Adsorption energy (AE) of reactive intermediate is currently the most important descriptor for electrochemical reactions (e.g., water electrolysis, hydrogen fuel cell, electrochemical nitrogen fixation, electrochemical carbon dioxide reduction, etc.), which can bridge the gap between catalyst's structure and activity. Tracing the history and evolution of AE can help to understand electrocatalysis and design optimal electrocatalysts. Focusing on oxygen electrocatalysis, this review aims to provide a comprehensive introduction on how AE is selected as the activity descriptor, the intrinsic and empirical relationships related to AE, how AE links the structure and electrocatalytic performance, the approaches to obtain AE, the strategies to improve catalytic activity by modulating AE, the extrinsic influences on AE from the environment, and the methods in circumventing linear scaling relations of AE. An outlook is provided at the end with emphasis on possible future investigation related to the obstacles existing between adsorption energy and electrocatalytic performance.
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Affiliation(s)
- Junming Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Hong Bin Yang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Daojin Zhou
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.,Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario M5S 1A4, Canada
| | - Bin Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
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18
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Shondo J, Veziroglu S, Tjardts T, Sarwar TB, Mishra YK, Faupel F, Aktas OC. Nanoscale Synergetic Effects on Ag-TiO 2 Hybrid Substrate for Photoinduced Enhanced Raman Spectroscopy (PIERS) with Ultra-Sensitivity and Reusability. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2203861. [PMID: 36135727 DOI: 10.1002/smll.202203861] [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: 06/22/2022] [Revised: 08/26/2022] [Indexed: 06/16/2023]
Abstract
Here, a 4N-in-1 hybrid substrate concept (nanocolumnar structures, nanocrack network, nanoscale mixed oxide phases, and nanometallic structures) for ultra-sensitive and reliable photo-induced-enhanced Raman spectroscopy (PIERS), is proposed. The use of the 4N-in-1 hybrid substrate leads to an ≈50-fold enhancement over the normal surface-enhanced Raman spectroscopy, which is recorded as the highest PIERS enhancement to date. In addition to an improved Raman signal, the 4N-in-1 hybrid substrate provides a high detection sensitivity which may be attributed to the activation possibility at extremely low UV irradiation dosage and prolonged relaxation time (long measurement time). Moreover, the 4N-in-1 hybrid substrate exhibits a superior photocatalytic degradation performance of analytes, allowing its reuse at least 18 times without any loss of PIERS activity. The use of the 4N-in-1 concept can be adapted to biomedicine, forensic, and security fields easily.
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Affiliation(s)
- Josiah Shondo
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143, Kiel, Germany
| | - Salih Veziroglu
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143, Kiel, Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Kiel University, Christian Albrechts-Platz 4, 24118, Kiel, Germany
| | - Tim Tjardts
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143, Kiel, Germany
| | - Tamim Bin Sarwar
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143, Kiel, Germany
| | - Yogendra Kumar Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, Sønderborg, 6400, Denmark
| | - Franz Faupel
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143, Kiel, Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Kiel University, Christian Albrechts-Platz 4, 24118, Kiel, Germany
| | - Oral Cenk Aktas
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143, Kiel, Germany
- Additive Manufacturing Excellence Centre - URTEMM, Kahramankazan, Ankara, 06980, Turkey
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19
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Chu C, Tang J, Zhao Z, Kong Y, Shen X. Fe Ions-Doped TiO 2 Aerogels as Catalysts of Oxygen Reduction Reactions in Alkaline Solutions. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8380. [PMID: 36499876 PMCID: PMC9739684 DOI: 10.3390/ma15238380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 06/17/2023]
Abstract
Aerogels have interconnected networks and preeminent pore structures. When used as the catalysts for oxygen reduction reaction (ORR), they can facilitate the mass transfer and expose more active sites. Here, we synthesized the Fe-doped titanium oxide-based aerogels (TA/Fes) by the sol-gel method combined with thermal treatment. The specific surface areas of the TA/Fes ranged from 475 to 774 m2·g-1, and the pore volumes varied from 0.96 to 1.72 cm3·g-1. The doping effect of the Fe ions and the oxygen vacancies in anatase enhance the electrical conductivity, leading to the low Rct (313.3-828.2 Ω). All samples showed excellent stability (2.0-4.5 mV) and 4e- pathway. The limiting current density of TA/Fe3 reached 5.34 mA·cm-2, which was comparable to that of commercial Pt/C. The preparation method is inspiring and the as-prepared aerogel catalysts have potential in promoting the scale of fuel cells.
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Affiliation(s)
- Chen Chu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, China
| | - Jinqiong Tang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, China
| | - Zhiyang Zhao
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, China
| | - Yong Kong
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, China
| | - Xiaodong Shen
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, China
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20
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Zhao J, Chen Y, Guan R, Cheng X, Wu Z, Zhao N, Shang Q, Sun Y. Enhancement of water soluble PDI-NapSO3H on the photocatalytic performance of Fe-TiO2 under visible light. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Wang L, Wang L, Shi Y, Zhao B, Zhang Z, Ding G, Zhang H. Blue TiO 2 nanotube electrocatalytic membrane electrode for efficient electrochemical degradation of organic pollutants. CHEMOSPHERE 2022; 306:135628. [PMID: 35810871 DOI: 10.1016/j.chemosphere.2022.135628] [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: 03/17/2022] [Revised: 05/29/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
In this study, a Ti3+-doped TiO2 porous membrane (Blue TiO2/Ti) was fabricated and employed for electrochemical degradation of organic pollutants in the single-pass flow-through mode. Characterizations including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microcopy (SEM) and energy dispersive spectroscopy (EDS) verified that Ti3+-doped anatase TiO2 with nanotube structures was successfully prepared. Electrochemical analysis including linear sweep voltammetry (LSV), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and electrochemical active surface area (ESA) revealed higher oxygen evolution potential (OEP, 2.23 V vs. Ag/AgCl), larger redox peak current, lower impedance and larger ESA (69 cm2/cm2) of Blue TiO2/Ti compared to the Ti and TiO2/Ti membranes. The effects of current density, flow rate and solution environment on the removal of methylene blue (MB) were investigated. The removal rates of various organic pollutants including sulfamethoxazole (SMX), methyl orange (MO), bisphenol A (BPA) and MB could reach 92.2%-99.5%. The quenching experiment proved that hydroxyl radicals (•OH) played the major role in the Blue TiO2/Ti based electrochemical system. Furthermore, the degradation pathways of two typical pollutants (SMX and MB) were proposed by analyzing the oxidation products with liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS), with the assistance of orbital-weighted Fukui index (fw0 and fw-) obtained through Density Functional Theory (DFT) calculations. Moreover, toxicity indexes of the oxidation products were obtained and compared to the parent SMX and MB using Toxicity Estimation Software Tool (TEST) software. Finally, the long-term operation performance of the Blue TiO2/Ti membrane was evaluated.
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Affiliation(s)
- Linlin Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Liang Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China.
| | - Yawei Shi
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China.
| | - Bin Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Zhaohui Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Guanghui Ding
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China
| | - Hongwei Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
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22
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Xiao XY, Zhao YH, Li YY, Song ZY, Chen SH, Huang HQ, Yang M, Li PH, Huang XJ. General Strategies to Construct Highly Efficient Sensing Interfaces for Metal Ions Detection from the Perspective of Catalysis. Anal Chem 2022; 94:13631-13641. [PMID: 36150119 DOI: 10.1021/acs.analchem.2c01797] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Constructing high-effective electrode sensing interfaces has been considered an effective method for electrochemical detection toward heavy metal ions (HMIs). However, most research has been devoted to enhancing the stripping currents of HMIs by simply improving the adsorptive capacity and conductivity of the electrode modified materials, while lacking theoretical guidelines in fabricating catalytic sensing interfaces. Besides, the understanding of detection mechanisms is quite unscientific from the perspective of catalysis. This perspective summarizes five general strategies in designing highly efficient sensing interfaces in the recent five years, including modulating crystal phases, orientations and planes, defect engineering, ionic valence state cycle engineering, adsorption in situ catalysis strategy, and construction of atomic level catalytic active sites. What's more, the catalytic mechanisms for improving the signals of HMIs, such as boosting the electron transfer rates and conversion rates, lowering the energy barriers, etc., are introduced and emphasized. This study has a great significance in directionally controlling functionalized electrochemical sensors to achieve excellent sensitivity and selectivity in detecting environmental pollutants from the view of catalysis, and it also brings enlightenments and guidance to develop new electroanalytical methods.
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Affiliation(s)
- Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yong-Huan Zhao
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yong-Yu Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
| | - Zong-Yin Song
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hong-Qi Huang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
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23
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Wu Z, Tian Y, Chen H, Wang L, Qian S, Wu T, Zhang S, Lu J. Evolving aprotic Li-air batteries. Chem Soc Rev 2022; 51:8045-8101. [PMID: 36047454 DOI: 10.1039/d2cs00003b] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lithium-air batteries (LABs) have attracted tremendous attention since the proposal of the LAB concept in 1996 because LABs have a super high theoretical/practical specific energy and an infinite supply of redox-active materials, and are environment-friendly. However, due to the lack of critical electrode materials and a thorough understanding of the chemistry of LABs, the development of LABs entered a germination period before 2010, when LABs research mainly focused on the development of air cathodes and carbonate-based electrolytes. In the growing period, i.e., from 2010 to the present, the investigation focused more on systematic electrode design, fabrication, and modification, as well as the comprehensive selection of electrolyte components. Nevertheless, over the past 25 years, the development of LABs has been full of retrospective steps and breakthroughs. In this review, the evolution of LABs is illustrated along with the constantly emerging design, fabrication, modification, and optimization strategies. At the end, perspectives and strategies are put forward for the development of future LABs and even other metal-air batteries.
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Affiliation(s)
- Zhenzhen Wu
- Center for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Queensland 4222, Australia.
| | - Yuhui Tian
- Center for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Queensland 4222, Australia.
| | - Hao Chen
- Center for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Queensland 4222, Australia.
| | - Liguang Wang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China. .,Institute of Zhejiang University-Quzhou, Quzhou 324000, China
| | - Shangshu Qian
- Center for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Queensland 4222, Australia.
| | - Tianpin Wu
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Shanqing Zhang
- Center for Catalysis and Clean Energy, School of Environment and Science, Griffith University, Queensland 4222, Australia.
| | - Jun Lu
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
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24
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Highly sensitive electrochemical detection of Hg(II) promoted by oxygen vacancies of plasma-treated ZnO: XPS and DFT calculation analysis. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Ma X, Shi Y, Liu J, Li X, Cui X, Tan S, Zhao J, Wang B. Hydrogen-Bond Network Promotes Water Splitting on the TiO 2 Surface. J Am Chem Soc 2022; 144:13565-13573. [DOI: 10.1021/jacs.2c03690] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaochuan Ma
- Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yongliang Shi
- Center for Spintronics and Quantum Systems, State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Jianyi Liu
- Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xintong Li
- Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xuefeng Cui
- Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
| | - Shijing Tan
- Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
| | - Jin Zhao
- Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- ICQD/Hefei National Research Center for Physical Sciences at the Microscale, and CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Bing Wang
- Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
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26
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Zarattini M, Dun C, Isherwood LH, Felten A, Filippi J, Gordon MP, Zhang L, Kassem O, Song X, Zhang W, Ionescu R, Wittkopf JA, Baidak A, Holder H, Santoro C, Lavacchi A, Urban JJ, Casiraghi C. Synthesis of 2D anatase TiO 2 with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS 2 nanosheets. JOURNAL OF MATERIALS CHEMISTRY. A 2022; 10:13884-13894. [PMID: 35872702 PMCID: PMC9255669 DOI: 10.1039/d1ta06695a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 10/26/2021] [Indexed: 06/15/2023]
Abstract
Two-dimensional (2D) anatase titanium dioxide (TiO2) is expected to exhibit different properties as compared to anatase nanocrystallites, due to its highly reactive exposed facets. However, access to 2D anatase TiO2 is limited by the non-layered nature of the bulk crystal, which does not allow use of top-down chemical exfoliation. Large efforts have been dedicated to the growth of 2D anatase TiO2 with high reactive facets by bottom-up approaches, which relies on the use of harmful chemical reagents. Here, we demonstrate a novel fluorine-free strategy based on topochemical conversion of 2D 1T-TiS2 for the production of single crystalline 2D anatase TiO2, exposing the {001} facet on the top and bottom and {100} at the sides of the nanosheet. The exposure of these faces, with no additional defects or doping, gives rise to a significant activity enhancement in the hydrogen evolution reaction, as compared to commercially available Degussa P25 TiO2 nanoparticles. Because of the strong potential of TiO2 in many energy-based applications, our topochemical approach offers a low cost, green and mass scalable route for production of highly crystalline anatase TiO2 with well controlled and highly reactive exposed facets.
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Affiliation(s)
- Marco Zarattini
- Department of Chemistry, University of Manchester Oxford Road Manchester UK M13 9PL
| | - Chaochao Dun
- The Molecular Foundry, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Liam H Isherwood
- Department of Chemistry, University of Manchester Oxford Road Manchester UK M13 9PL
- Dalton Cumbrian Facility, University of Manchester, Westlakes Science and Technology Park Moor Row Cumbria UK CA24 3HA, UK
| | - Alexandre Felten
- Physics Department, Université de Namur Rue de Bruxelles Namur Belgium
| | - Jonathan Filippi
- ICCOM-CNR Via Madonna del Piano 10 50019 Sesto Fiorentino (FI) Italy
| | - Madeleine P Gordon
- The Molecular Foundry, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Applied Science and Technology Graduate Group, University of California Berkeley CA 94720 USA
| | - Linfei Zhang
- School of Automotive Engineering, Guangdong Polytechnic of Science and Technology Zhuhai P. R. China
| | - Omar Kassem
- Department of Chemistry, University of Manchester Oxford Road Manchester UK M13 9PL
| | - Xiuju Song
- Department of Chemistry, University of Manchester Oxford Road Manchester UK M13 9PL
| | - Wenjing Zhang
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University Shenzhen 518060 P. R. China
| | - Robert Ionescu
- HP Laboratories 1501 Page Mill Road Palo Alto California 94304 USA
| | | | - Aliaksandr Baidak
- Department of Chemistry, University of Manchester Oxford Road Manchester UK M13 9PL
- Dalton Cumbrian Facility, University of Manchester, Westlakes Science and Technology Park Moor Row Cumbria UK CA24 3HA, UK
| | - Helen Holder
- HP Laboratories 1501 Page Mill Road Palo Alto California 94304 USA
| | - Carlo Santoro
- Department of Materials Science, University of Milano-Bicocca Via Cozzi 5 20125 Milano Italy
| | | | - Jeffrey J Urban
- The Molecular Foundry, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Cinzia Casiraghi
- Department of Chemistry, University of Manchester Oxford Road Manchester UK M13 9PL
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27
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Luo Y, Wang Y, Qin X, Wang Y, Wu K, Zhang H, Zhang L, Huang H, Tian W, Wang Y. Bidirectional modulation interaction between monatomic Pt and Tin+ sites on Ti4O7 for high-efficiency and durable oxygen reduction. J Catal 2022. [DOI: 10.1016/j.jcat.2022.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Lan K, Wei Q, Zhao D. Versatile Synthesis of Mesoporous Crystalline TiO 2 Materials by Monomicelle Assembly. Angew Chem Int Ed Engl 2022; 61:e202200777. [PMID: 35194915 DOI: 10.1002/anie.202200777] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Indexed: 11/10/2022]
Abstract
Mesoscale TiO2 structures have realized many technological applications-ranging from catalysis and biomedicine to energy storage and conversion-because of their large mesoporosities offering desirable accessibility and mass transport. Tailoring mesoporous TiO2 structures with novel mesoscopic and microscopic configurations is envisaged to offer ample opportunities for further applications. In this Review, we explain how to synthesize novel mesoporous TiO2 materials and present recent examples. An emphasis is placed on a "monomicelle assembly" strategy as an emerging and powerful approach to direct the formation of mesostructured TiO2 with precise control over its structural orientations and architectures. Furthermore, typical examples of mesoporous TiO2 for applications in batteries and photocatalysis are highlighted. The Review ends with an outlook towards the synthesis of mesoporous TiO2 with tailored architectures by self-assembly, which could pave the way for developing advanced energy conversion and storage devices.
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Affiliation(s)
- Kun Lan
- Laboratory of Advanced Materials, Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200433, P. R. China
| | - Qiulong Wei
- Department of Materials Science and Engineering, Fujian Key Laboratory of Materials Genome, Xiamen Key Laboratory of High Performance Metals and Materials, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Dongyuan Zhao
- Laboratory of Advanced Materials, Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200433, P. R. China
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29
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Tang J, Ren J, Zhao Z, Kong Y, Shen X. Partially reduced TiO 2 aerogel as a catalyst of oxygen reduction reaction in alkaline. CHEM LETT 2022. [DOI: 10.1246/cl.220210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jinqiong Tang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, PR China
| | - Jian Ren
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, PR China
| | - Zhiyang Zhao
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, PR China
| | - Yong Kong
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, PR China
| | - Xiaodong Shen
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 210009, PR China
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30
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Lan K, Wei Q, Zhao D. Versatile Synthesis of Mesoporous Crystalline TiO
2
Materials by Monomicelle Assembly. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kun Lan
- Laboratory of Advanced Materials Department of Chemistry State Key Laboratory of Molecular Engineering of Polymers iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200433 P. R. China
| | - Qiulong Wei
- Department of Materials Science and Engineering Fujian Key Laboratory of Materials Genome Xiamen Key Laboratory of High Performance Metals and Materials College of Materials Xiamen University Xiamen 361005 P. R. China
| | - Dongyuan Zhao
- Laboratory of Advanced Materials Department of Chemistry State Key Laboratory of Molecular Engineering of Polymers iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200433 P. R. China
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31
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32
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Momin N, Manjanna J, Aruna ST, Senthilkumar S, Reddy DS, Kumar A. Structural and electrical properties of M-doped TiO2 (M = Ni, Cu, Zn) relevant to their application as electrolytes for solid oxide fuel cells. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02026-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Kim MJ, Youn JR, Lee SJ, Ryu IS, Chan Nam S, Kwan Jeong S, Goo Jeon S. Facile control of surface properties in CeO2-promoted Mn/TiO2 catalyst for low-temperature selective catalytic reduction of NO by NH3. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.01.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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34
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Wang C, Zhang T, Yin L, Ni C, Ni J, Hou LA. Enhanced perfluorooctane acid mineralization by electrochemical oxidation using Ti 3+ self-doping TiO 2 nanotube arrays anode. CHEMOSPHERE 2022; 286:131804. [PMID: 34365167 DOI: 10.1016/j.chemosphere.2021.131804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 08/01/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
Perfluorooctanoic acid (PFOA) is of increasing concern due to its worldwide application and extremely environmental persistence. Herein, we demonstrated the electrochemical degradation of PFOA with high efficiency using the Ti3+ self-doping TiO2 nanotube arrays (Ti3+/TiO2-NTA) anode. The fabricated Ti3+/TiO2-NTA anode exhibited vertically aligned uniform nanotubes structure, and was demonstrated good performance on the electrochemical degradation of PFOA in water. The degradation rate, total organic carbon (TOC) removal rate and defluorination rate of PFOA reached 98.1 %, 93.3 % and 74.8 %, respectively, after electrolysis for 90 min at low current density of 2 mA cm-2. The energy consumption (7.6 Wh L-1) of this electrochemical oxidation system using Ti3+/TiO2-NTA anode for PFOA degradation was about 1 order of magnitude lower than using traditional PbO2 anodes. Cathodic polarization could effectively prolong the electrocatalytic activity of the anode by regenerating Ti3+ sites. PFOA molecular was underwent a rapidly mineralization to CO2 and F-, with only low concentration of short-chain perflfluorocarboxylic acids (PFCAs) intermediates identified. A possible electrochemical degradation mechanism of PFOA was proposed, in which the initial direct electron transfer (DET) on the anode to yield PFOA free radicals (C7F15COO•) and hydroxyl radicals (•OH) oxidation were greatly enhanced. This presented study provides a novel approach for the purification of the recalcitrant PFOA from wastewaters.
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Affiliation(s)
- Chong Wang
- College of Resources Adironment, Southwest University, Chongqing, 400716, China.
| | - Tianai Zhang
- College of Resources Adironment, Southwest University, Chongqing, 400716, China
| | - Lifeng Yin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China
| | - Chengsheng Ni
- College of Resources Adironment, Southwest University, Chongqing, 400716, China
| | - JiuPai Ni
- College of Resources Adironment, Southwest University, Chongqing, 400716, China
| | - Li-An Hou
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China; Xi'an High-Tech Institute, Xi'an, 710025, China
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35
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Luque-Centeno JM, Martínez-Huerta MV, Sebastián D, Pérez-Rodríguez S, Lázaro MJ. Titanium Dioxide/N-Doped Graphene Composites as Non-Noble Bifunctional Oxygen Electrocatalysts. Ind Eng Chem Res 2021; 60:18817-18830. [PMID: 35645458 PMCID: PMC9134212 DOI: 10.1021/acs.iecr.1c02896] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 11/29/2022]
Abstract
Bifunctional oxygen electrocatalysts are essential in the development of low-temperature unitized regenerative fuel cells (URFCs), as a promising alternative for storing energy via hydrogen. TiO2, as a semiconductor material, is commonly not established as an active electrocatalyst for oxygen reduction and oxygen evolution due to its poor electrical conductivity and low reactivity. Here, we demonstrated that composites composed of TiO2 and N-doped graphene can be active in oxygen reduction and evolution reactions in an alkaline environment. Combination factors such anatase/rutile interaction, N-doping graphene, and the presence of Ti3+/Ti-N species raise the active sites and improve the electrochemical activity. Our results may afford an opportunity to develop a non-noble and promising electrocatalyst in energy storage technology.
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Affiliation(s)
- José Manuel Luque-Centeno
- Instituto de Catálisis y Petroleoquímica (CSIC), Marie Curie 2, 28049, Madrid, Spain.,Instituto de Carboquímica (CSIC), Miguel Luesma Castán 4, 50018, Zaragoza, Spain
| | | | - David Sebastián
- Instituto de Carboquímica (CSIC), Miguel Luesma Castán 4, 50018, Zaragoza, Spain
| | - Sara Pérez-Rodríguez
- Instituto de Carboquímica (CSIC), Miguel Luesma Castán 4, 50018, Zaragoza, Spain
| | - María Jesús Lázaro
- Instituto de Carboquímica (CSIC), Miguel Luesma Castán 4, 50018, Zaragoza, Spain
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36
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Xiao XY, Song ZY, Li PH, Chen SH, Li LN, Yang M, Lin CH, Huang XJ. Au 25 Nanoclusters Exhibit Superhigh Catalytic Activity in Electrochemical Detection of As(III). Anal Chem 2021; 93:14014-14023. [PMID: 34607426 DOI: 10.1021/acs.analchem.1c03748] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An atomic-level Au nanocluster, as an excellent photocatalyst, is generally not considered as an efficient electrocatalyst due to its poor stability. Herein, a method is proposed to stabilize abundant Au25 on Fe2O3 nanoplates (Au25/OV-Fe2O3) successfully with oxygen vacancies (OV) created. Au25/OV-Fe2O3 shows superhigh catalysis in the electrochemical reduction toward As(III). The record-breaking sensitivity (161.42 μA ppb-1) is two orders of magnitude higher than currently reported, where an ultratrace limit of detection (9 ppt) is obtained, suggesting promising applications in the analysis of organic and bioactive substances. The stability of Au25 is attributed to the Au-Fe bond formed after loading Au25 nanoclusters on Fe2O3 nanoplates through "electron compensation" and bond length (Au-S) shortening. Moreover, the ligand S atoms in Au25 nanoclusters significantly contribute to the reduction of As(III). The fantastic stability and superior catalytic ability of Au25/OV-Fe2O3 provide guidelines to stabilize Au nanoclusters on metal oxides, indicating their potential electroanalytical applications.
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Affiliation(s)
- Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zong-Yin Song
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Li-Na Li
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Chu-Hong Lin
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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37
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Hybrid Structure of TiO2-Graphitic Carbon as a Support of Pt Nanoparticles for Catalyzing Oxygen Reduction Reaction. Catalysts 2021. [DOI: 10.3390/catal11101196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The durability of catalysts in fuel cells is a longstanding issue that needs to be resolved. Catalyst stability of the fuel cell has always been a problem, studies are underway to address them. Herein, to address this issue, we synthesize a hybrid structure consisting of SP carbon (SP) as the graphitic carbon and TiO2 as the metal oxide using a microwave method for use as a support for Pt nanoparticles. Anatase TiO2 and Pt nanoparticles with sizes of ~5 and 3.5 ± 1.4 nm, respectively, are uniformly dispersed on a modified graphitic SP carbon support (Pt-TiO2-SP). This supported Pt catalyst exhibits significantly improves durability in the oxygen reduction reaction (ORR). Furthermore, the Pt-TiO2-SP carbon hybrid catalyst manifests superior electrocatalytic stability and higher onset potential in ORR than those exhibited by Pt-SP carbon without TiO2. Pt-TiO2-SP exhibits an activity loss of less than 68 mV after 5000 electrochemical cycles, whereas an activity loss of ~100 mV is observed for Pt-SP carbon in a stability test. These results suggest that the strong metal–support interaction in TiO2-supported Pt catalyst significantly enhances the activity of Pt nanocatalyst.
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Photocatalysis and Li-Ion Battery Applications of {001} Faceted Anatase TiO2-Based Composites. J 2021. [DOI: 10.3390/j4030038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Anatase TiO2 are the most widely used photocatalysts because of their unique electronic, optical and catalytic properties. Surface chemistry plays a very important role in the various applications of anatase TiO2 especially in the catalysis, photocatalysis, energy conversion and energy storage. Control of the surface structure by crystal facet engineering has become an important strategy for tuning and optimizing the physicochemical properties of TiO2. For anatase TiO2, the {001} crystal facets are the most reactive because they exhibit unique surface characteristics such as visible light responsiveness, dissociative adsorption, efficient charge separation capabilities and photocatalytic selectivity. In this review, a concise survey of the literature in the field of {001} dominated anatase TiO2 crystals and their composites is presented. To begin, the existing strategies for the synthesis of {001} dominated anatase TiO2 and their composites are discussed. These synthesis strategies include both fluorine-mediated and fluorine-free synthesis routes. Then, a detailed account of the effect of {001} facets on the physicochemical properties of TiO2 and their composites are reviewed, with a particular focus on photocatalysis and Li-ion batteries applications. Finally, an outlook is given on future strategies discussing the remaining challenges for the development of {001} dominated TiO2 nanomaterials and their potential applications.
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Chang J, Wang G, Yang Y. Recent Advances in Electrode Design for Rechargeable Zinc–Air Batteries. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202100044] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Jinfa Chang
- NanoScience Technology Center University of Central Florida 12424 Research Parkway Suite 423 Orlando FL 32826 USA
| | - Guanzhi Wang
- NanoScience Technology Center University of Central Florida 12424 Research Parkway Suite 423 Orlando FL 32826 USA
- Department of Materials Science and Engineering University of Central Florida Orlando FL 32826 USA
| | - Yang Yang
- NanoScience Technology Center University of Central Florida 12424 Research Parkway Suite 423 Orlando FL 32826 USA
- Department of Materials Science and Engineering University of Central Florida Orlando FL 32826 USA
- Department of Chemistry Renewable Energy and Chemical Transformation Cluster University of Central Florida Orlando FL 32826 USA
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40
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Yang H, Dai G, Chen Z, Wu J, Huang H, Liu Y, Shao M, Kang Z. Pseudo-Periodically Coupling NiO Lattice with CeO Lattice in Ultrathin Heteronanowire Arrays for Efficient Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101727. [PMID: 34216433 DOI: 10.1002/smll.202101727] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/17/2021] [Indexed: 06/13/2023]
Abstract
Transition metal oxides (TMOs) have been under the spotlight as promising precatalysts for electrochemical oxygen evolution reaction (OER) in alkaline media. However, the slow and incomplete self-reconstruction from TMOs to (oxy)hydroxides as well as the formed (oxy)hydroxides with unmodified electronic structure gives rise to the inferior OER performance to the noble metal oxide ones. Herein, a unique dual metal oxides lattice coupling strategy is proposed to fabricate carbon cloth-supported ultrathin nanowires arrays, which are composed of pseudo-periodically welded NiO with CeO2 nanocrystals (NiO/CeO2 NW@CC). When served as an OER precatalyst in 1.0 m KOH, the NiO/CeO2 NW@CC shows an ultralow overpotential of 330 mV at 50 mA cm-2 , along with an impressive cycle durability of more than 3 days even at 50 mA cm-2 , surpassing CC-supported NiO and commercial IrO2 catalysts. The combined experimental and theoretical investigations unveil that the atomic coupling of CeO2 can not only appreciably trigger the generation of oxygen vacancies and expedite phase transformation of NiO into active NiOOH, but also in situ create a chemical bond with the formed NiOOH and enable the electron injection, thus effectively inhibiting the aggregation of the accessible NiOOH nanodomains and optimizing their reaction free energy towards oxygen-containing intermediates.
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Affiliation(s)
- Hongyuan Yang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Guoliang Dai
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Ziliang Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Jie Wu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Hui Huang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Yang Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Mingwang Shao
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Zhenhui Kang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
- Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Taipa, Macau SAR, 999078, China
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41
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Catalytic performance and intermediates identification of trichloroethylene deep oxidation over Ru/3DOM SnO2 catalysts. J Catal 2021. [DOI: 10.1016/j.jcat.2021.06.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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42
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Hu W, Wen Z, Yu X, Qian P, Lian W, Li X, Shang Y, Wu X, Chen T, Lu Y, Wang M, Yang S. In Situ Surface Fluorination of TiO 2 Nanocrystals Reinforces Interface Binding of Perovskite Layer for Highly Efficient Solar Cells with Dramatically Enhanced Ultraviolet-Light Stability. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004662. [PMID: 34026459 PMCID: PMC8132056 DOI: 10.1002/advs.202004662] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Low-temperature solution-processed TiO2 nanocrystals (LT-TiO2) have been extensively applied as electron transport layer (ETL) of perovskite solar cells (PSCs). However, the low electron mobility, high density of electronic trap states, and considerable photocatalytic activity of TiO2 result in undesirable charge recombination at the ETL/perovskite interface and notorious instability of PSCs under ultraviolet (UV) light. Herein, LT-TiO2 nanocrystals are in situ fluorinated via a simple nonhydrolytic method, affording formation of Ti─F bonds, and consequently increase electron mobility, decrease density of electronic trap states, and inhibit photocatalytic activity. Upon applying fluorinated TiO2 nanocrystals (F-TiO2) as ETL, regular-structure planar heterojunction PSC (PHJ-PSC) achieves a champion power conversion efficiency (PCE) of 22.68%, which is among the highest PCEs for PHJ-PSCs based on LT-TiO2 ETLs. Flexible PHJ-PSC devices based on F-TiO2 ETL exhibit the best PCE of 18.26%, which is the highest value for TiO2-based flexible devices. The bonded F atoms on the surface of TiO2 promote the formation of Pb─F bonds and hydrogen bonds between F- and FA/MA organic cations, reinforcing interface binding of perovskite layer with TiO2 ETL. This contributes to effective passivation of the surface trap states of perovskite film, resulting in enhancements of device efficiency and stability especially under UV light.
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Affiliation(s)
- Wanpei Hu
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Zhiling Wen
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Xin Yu
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Peisen Qian
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Weitao Lian
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Xingcheng Li
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Yanbo Shang
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Xiaojun Wu
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Tao Chen
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Yalin Lu
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Mingtai Wang
- Institute of Solid State PhysicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei230031China
| | - Shangfeng Yang
- Hefei National Laboratory for Physical Sciences at MicroscaleCAS Key Laboratory of Materials for Energy ConversionAnhui Laboratory of Advanced Photon Science and TechnologyDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
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Cao N, Wei Z, Xu J, Luo J, Guan A, Al-Enizi AM, Ma J, Zheng G. Electrochemical nitrogen fixation via bimetallic Sn-Ti sites on defective titanium oxide catalysts. J Colloid Interface Sci 2021; 588:242-247. [DOI: 10.1016/j.jcis.2020.12.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/18/2020] [Accepted: 12/18/2020] [Indexed: 12/28/2022]
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Dhakshinamoorthy J, Srivastava SK, Mishra D, Pullithadathil B. Unveiling the interplay between induced native defects and room temperature magnetic ordering in titanium deficient disordered-TiO 2 nanoparticles. NANOTECHNOLOGY 2021; 32:095701. [PMID: 33113521 DOI: 10.1088/1361-6528/abc57b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Understanding the origin of magnetic ordering in an undoped semiconductor with native defects is an open question, which is being explored actively in research. In this investigation, the interplay between magnetic ordering and excess induced native defects in undoped anatase TiO2 nanoparticles is explained using an experimental and theoretical approach. It is demonstrated that structurally disordered TiO2 nanoparticles with a high concentration of native defects such as titanium interstitials and oxygen vacancies are synthesized using controlled atmospheric rapid cooling (i.e. quenching) process. The structural disorders in the lattice have been examined using various spectroscopic and microscopic analyses revealed the existence of Ti deficiency in both pristine and quenched TiO2 nanoparticles. A possible origin of magnetic ordering in titanium deficient anatase TiO2 system is elucidated based on first-principle calculations. It was found that the overall magnetic moment of Ti deficient TiO2 system is determined by the distance between Ti interstitials and its neighboring vacancies (i.e. either V Ti or V Os). However, quenched TiO2 nanoparticles possess excess Ti interstitials, Ti and O vacancies and therefore the net magnetic moment of the system is reduced due to anti-ferromagnetically coupled neighboring Tilattice ions.
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Affiliation(s)
- Jayaseelan Dhakshinamoorthy
- Nanosensor Laboratory, PSG Institute of Advanced Studies, Coimbatore-641 004, India
- Department of Physics, Indian Institute of Technology, Jodhpur-342 037, India
| | - Sachin Kumar Srivastava
- Materials Physics Division, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam-603 102, India
| | - Durgamadhab Mishra
- Department of Physics, Indian Institute of Technology, Jodhpur-342 037, India
| | - Biji Pullithadathil
- Nanosensor Laboratory, PSG Institute of Advanced Studies, Coimbatore-641 004, India
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Abstract
Abstract
Scanning tunneling microscopy (STM) has gained increasing attention in the field of electrocatalysis due to its ability to reveal electrocatalyst surface structures down to the atomic level in either ultra-high-vacuum (UHV) or harsh electrochemical conditions. The detailed knowledge of surface structures, surface electronic structures, surface active sites as well as the interaction between surface adsorbates and electrocatalysts is highly beneficial in the study of electrocatalytic mechanisms and for the rational design of electrocatalysts. Based on this, this review will discuss the application of STM in the characterization of electrocatalyst surfaces and the investigation of electrochemical interfaces between electrocatalyst surfaces and reactants. Based on different operating conditions, UHV-STM and STM in electrochemical environments (EC-STM) are discussed separately. This review will also present emerging techniques including high-speed EC-STM, scanning noise microscopy and tip-enhanced Raman spectroscopy.
Graphic Abstract
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46
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Li M, Qin N, Ji Z, Gan Q, Wang Z, Li Y, Cao L, Yuan H, He D, Chen Z, Luo G, Zhang K, Lu Z. Single copper sites dispersed on defective TiO 2-x as a synergistic oxygen reduction reaction catalyst. J Chem Phys 2021; 154:034705. [PMID: 33499634 DOI: 10.1063/5.0030559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Catalysts containing isolated single atoms have attracted much interest due to their good catalytic behavior, bridging the gap between homogeneous and heterogeneous catalysts. Here, we report an efficient oxygen reduction reaction (ORR) catalyst that consists of atomically dispersed single copper sites confined by defective mixed-phased TiO2-x. This synergistic catalyst was produced by introducing Cu2+ to a metal organic framework (MOF) using the Mannich reaction, occurring between the carbonyl group in Cu(acac)2 and the amino group on the skeleton of the MOF. The embedding of single copper atoms was confirmed by atomic-resolution high-angle annular dark-field scanning transmission electron microscopy and x-ray absorption fine structure spectroscopy. Electronic structure modulation of the single copper sites coupling with oxygen vacancies was further established by electron paramagnetic resonance spectroscopy and first-principles calculations. Significantly enhanced ORR activity and stability were achieved on this special Cu single site. The promising application of this novel electrocatalyst was demonstrated in a prototype Zn-air battery. This strategy of the stabilization of single-atom active sites by optimization of the atomic and electronic structure on a mixed matrix support sheds light on the development of highly efficient electrocatalysts.
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Affiliation(s)
- Minchan Li
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ning Qin
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zongwei Ji
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qingmeng Gan
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhenyu Wang
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yingzhi Li
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
| | - Lujie Cao
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
| | - Huimin Yuan
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
| | - Dongsheng He
- Materials Characterization and Preparation Center, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Zhenhua Chen
- Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201800, China
| | - Guangfu Luo
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
| | - Kaili Zhang
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Zhouguang Lu
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China
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Wang C, Sun M, Zhao Y, Huo M, Wang X, Elimelech M. Photo-electrochemical Osmotic System Enables Simultaneous Metal Recovery and Electricity Generation from Wastewater. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:604-613. [PMID: 33291886 DOI: 10.1021/acs.est.0c04375] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Global depletion of natural resources provides an impetus for developing low-cost, environmentally benign technologies for the recovery of valuable resources from wastewater. In this study, we present an autonomous photo-electrochemical osmotic system (PECOS) that can recover a wide range of metals from simulated metal-laden wastewater with sunlight illumination while generating electricity. The PECOS comprises a draw solution chamber with a nickel nanoparticle-functionalized titanium nanowire (Ni-TiNA) photoanode, a feed solution chamber containing synthetic wastewater with an immersed carbon fiber cathode, and a forward osmosis (FO) membrane mounted between the chambers as a separator. Using a Na2-EDTA anolyte as a draw solution at neutral pH, we demonstrate that a sunlit PECOS achieves copper recovery at a rate of 51 g h-1 per m-2 of membrane area from simulated copper-laden wastewater while simultaneously producing a maximum power density of 228 mW m-2. Moreover, because of the osmotic pressure difference generated by the photo-electrochemical reactions, the PECOS reduces the wastewater volume by extracting fresh water through the FO membrane at a water flux of 0.84 L m-2 h-1. We further demonstrate the feasibility of the PECOS in recovering diverse metals from a simulated metal-laden industrial wastewater under sunlight irradiation. Our proof-of-concept PECOS prototype provides a sustainable technological solution that leverages sunlight in an electrochemical osmotic system to recover multiple resources from wastewater.
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Affiliation(s)
- Chi Wang
- School of Environment, Northeast Normal University, Changchun 130117, China
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - Meng Sun
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - Yumeng Zhao
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Mingxin Huo
- School of Environment, Northeast Normal University, Changchun 130117, China
- School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun 130118, China
| | - Xianze Wang
- School of Environment, Northeast Normal University, Changchun 130117, China
| | - Menachem Elimelech
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
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Zhu JP, Wu XF, Yang XH, Liu PF, Dai S, Yang HG. A template-free synthesis of mesoporous SrTiO 3 single crystals. CrystEngComm 2021. [DOI: 10.1039/d1ce00484k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Well-defined mesoporous SrTiO3 single crystals were fabricated via a template-free method, undergoing a reversed crystal growth, which crystallize from the external and then proceed gradually inwards.
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Affiliation(s)
- Ji Ping Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xue Feng Wu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiao Hua Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Peng Fei Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Sheng Dai
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Hua Gui Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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Du X, Song S, Wang Y, Jin W, Ding T, Tian Y, Li X. Facile one-pot synthesis of defect-engineered step-scheme WO 3/g-C 3N 4 heterojunctions for efficient photocatalytic hydrogen production. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02478c] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Defect-engineered step-scheme WO3/g-C3N4 heterojunctions synthesized by a facile one-pot method greatly improve the photocatalytic activity for hydrogen evolution.
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Affiliation(s)
- Xiya Du
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Song Song
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Yating Wang
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization
- School of Chemical Engineering and Material Science
- Tianjin University of Science & Technology
- Tianjin 300457
- P. R. China
| | - Wenfeng Jin
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Tong Ding
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Ye Tian
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Xingang Li
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
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Grochowska K, Nedyalkov N, Karczewski J, Haryński Ł, Śliwiński G, Siuzdak K. Anodic titania nanotubes decorated with gold nanoparticles produced by laser-induced dewetting of thin metallic films. Sci Rep 2020; 10:20506. [PMID: 33239673 PMCID: PMC7688952 DOI: 10.1038/s41598-020-77710-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 11/09/2020] [Indexed: 12/21/2022] Open
Abstract
Herein, we combine titania layers with gold species in a laser-supported process and report a substantial change of properties of the resulting heterostructures depending on the major processing parameters. Electrodes were fabricated via an anodisation process complemented with calcination to ensure a crystalline phase, and followed by magnetron sputtering of metallic films. The obtained TiO2 nanotubes with deposited thin (5, 10 nm) Au films were treated with a UV laser (355 nm) to form Au nanoparticles on top of the nanotubes. It was proven that selected laser working parameters ensure not only the formation of Au nanoparticles, but also simultaneously provide preservation of the initial tubular architecture, while above-threshold laser fluences result in partial destruction (melting) of the top layer of the nanotubes. For almost all of the samples, the crystalline phase of the nanotubes observed in Raman spectra was maintained independently of the laser processing parameters. Enhanced photoresponse up to ca 6 mA/cm2 was demonstrated by photoelectrochemical measurements on samples obtained by laser annealing of the 10 nm Au coating on a titania support. Moreover, a Mott-Schottky analysis indicated the dramatically increased (two orders of magnitude) concentration of donor density in the case of a laser-treated Au-TiO2 heterojunction compared to reference electrodes.
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Affiliation(s)
- Katarzyna Grochowska
- Centre of Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, 14 Fiszera St., 80-231, Gdańsk, Poland.
| | - Nikolay Nedyalkov
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Shose Blvd., 1784, Sofia, Bulgaria
| | - Jakub Karczewski
- Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, 11/12 Narutowicza St., 80-233, Gdańsk, Poland
| | - Łukasz Haryński
- Centre of Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, 14 Fiszera St., 80-231, Gdańsk, Poland
| | - Gerard Śliwiński
- Centre of Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, 14 Fiszera St., 80-231, Gdańsk, Poland
| | - Katarzyna Siuzdak
- Centre of Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, 14 Fiszera St., 80-231, Gdańsk, Poland
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