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Zhai W, Li Z, Wang Y, Zhai L, Yao Y, Li S, Wang L, Yang H, Chi B, Liang J, Shi Z, Ge Y, Lai Z, Yun Q, Zhang A, Wu Z, He Q, Chen B, Huang Z, Zhang H. Phase Engineering of Nanomaterials: Transition Metal Dichalcogenides. Chem Rev 2024; 124:4479-4539. [PMID: 38552165 DOI: 10.1021/acs.chemrev.3c00931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Crystal phase, a critical structural characteristic beyond the morphology, size, dimension, facet, etc., determines the physicochemical properties of nanomaterials. As a group of layered nanomaterials with polymorphs, transition metal dichalcogenides (TMDs) have attracted intensive research attention due to their phase-dependent properties. Therefore, great efforts have been devoted to the phase engineering of TMDs to synthesize TMDs with controlled phases, especially unconventional/metastable phases, for various applications in electronics, optoelectronics, catalysis, biomedicine, energy storage and conversion, and ferroelectrics. Considering the significant progress in the synthesis and applications of TMDs, we believe that a comprehensive review on the phase engineering of TMDs is critical to promote their fundamental studies and practical applications. This Review aims to provide a comprehensive introduction and discussion on the crystal structures, synthetic strategies, and phase-dependent properties and applications of TMDs. Finally, our perspectives on the challenges and opportunities in phase engineering of TMDs will also be discussed.
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Affiliation(s)
- Wei Zhai
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Zijian Li
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Yongji Wang
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Li Zhai
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Yao Yao
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Siyuan Li
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Lixin Wang
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Hua Yang
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Banlan Chi
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Jinzhe Liang
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Zhenyu Shi
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Yiyao Ge
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhuangchai Lai
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong 999077, China
| | - Qinbai Yun
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - An Zhang
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Zhiying Wu
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Qiyuan He
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Bo Chen
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), School of Chemistry and Life Sciences, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Zhiqi Huang
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Hua Zhang
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, China
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Linto Sibi SP, Rajkumar M, Manoharan M, Mobika J, Nithya Priya V, Rajendra Kumar RT. Humidity activated ultra-selective room temperature gas sensor based on W doped MoS 2/RGO composites for trace level ammonia detection. Anal Chim Acta 2024; 1287:342075. [PMID: 38182340 DOI: 10.1016/j.aca.2023.342075] [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: 08/25/2023] [Revised: 11/24/2023] [Accepted: 11/25/2023] [Indexed: 01/07/2024]
Abstract
The lack of highly efficient, cost effective and stable ammonia gas sensors functionable at room temperature even in extreme humid environments poses significant challenge for the future generation gas sensors. The prime factors that impede the development of such next generation gas sensors are the strong interference of humidity and sluggish selectivity. Herein, we fabricated tungsten doped molybdenum disulphide/reduced graphene oxide composite by an in-situ hydrothermal method to exploit the adsorption, dissolution (solubility), ionization and transmission process of ammonia and thereby to effectuate its trace level detection even in indispensable humid environments. The protype based on 5 at.% Tungsten doped MoS2/RGO (W5) gas sensor exhibited 3.8-fold increment in its response to 50 ppm of ammonia when the relative humidity varied from 20 % to 70 % with ultra-high selectivity at room temperature. The as prepared gas sensor revealed a practical detection limit down to 1 ppm with a substantial response and rapid recovery time. Furthermore, W5 gas sensor exhibited a 42-fold increment in response to 50 ppm of ammonia relative to its pristine (MoS2/RGO) MG composite with a RH of 70 %. The proton hopping mechanism accountable for such an enormous enhancement in ammonia sensing and its potential for breath sensor are briefly annotated.
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Affiliation(s)
- S P Linto Sibi
- Department of Physics, PSG College of Arts and Science, Coimbatore, 641014, Tamil Nadu, India
| | - M Rajkumar
- Department of Physics, PSG College of Arts and Science, Coimbatore, 641014, Tamil Nadu, India.
| | - Mathankumar Manoharan
- Advanced Materials and Devices Laboratory (AMDL), Department of Nanoscience and Technology, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India
| | - J Mobika
- Department of Physics, Nandha Engineering College, Erode, Tamil Nadu, 638052, India
| | - V Nithya Priya
- Department of Physics, PSG College of Arts and Science, Coimbatore, 641014, Tamil Nadu, India
| | - R T Rajendra Kumar
- Advanced Materials and Devices Laboratory (AMDL), Department of Nanoscience and Technology, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India
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Wen F, Huang X, Li Y, Pang L, Xu Y, Zhang T. Photocatalytic Synthesis of Ammonia from Pinecone Graphite-Phase Carbon Nitride Loaded with MoS 2 Nanosheets as Co-catalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 37289619 DOI: 10.1021/acs.langmuir.3c00763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Photocatalytic nitrogen fixation is a promising alternative to the Haber-Bosch process to alleviate the energy and environmental crises. Here, we designed a pinecone-shaped graphite-phase carbon nitride (PCN) catalyst supported with MoS2 nanosheets by a supramolecular self-assembly method. The catalyst shows an excellent photocatalytic nitrogen reduction reaction (PNRR) due to the larger specific surface area and the enhancement of visible light owing to the reduced band gap. Under simulated sunlight, the sample of PCN loaded with 5 wt % MoS2 nanosheets (MS5%/PCN) shows a PNRR efficiency of 279.41 μmol g-1 h-1, which is 14.9 times that of bulk graphite-phase carbon nitride (g-C3N4), 4.6 times that of PCN, and 5.4 times that of MoS2, respectively. The unique pinecone-like structure of MS5%/PCN not only improves the ability of light absorption but also assists in the uniform loading of MoS2 nanosheets. Likewise, the existence of MoS2 nanosheets improves the light absorption ability of the catalyst and reduces the impedance of the catalyst. Furthermore, as a co-catalyst, MoS2 nanosheets can efficiently adsorb nitrogen (N2) and serve as active N2 reduction sites. From the perspective of structural design, this work can offer novel solutions for the creation of effective N2-fixing photocatalysts.
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Affiliation(s)
- Fushan Wen
- College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580 China
| | - Xiaoli Huang
- College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580 China
| | - Yajie Li
- College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580 China
| | - Le Pang
- College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580 China
| | - Yuan Xu
- College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580 China
| | - Tao Zhang
- College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580 China
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Yang R, Fan Y, Zhang Y, Mei L, Zhu R, Qin J, Hu J, Chen Z, Hau Ng Y, Voiry D, Li S, Lu Q, Wang Q, Yu JC, Zeng Z. 2D Transition Metal Dichalcogenides for Photocatalysis. Angew Chem Int Ed Engl 2023; 62:e202218016. [PMID: 36593736 DOI: 10.1002/anie.202218016] [Citation(s) in RCA: 52] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/29/2022] [Accepted: 01/02/2023] [Indexed: 01/04/2023]
Abstract
Two-dimensional (2D) transition metal dichalcogenides (TMDs), a rising star in the post-graphene era, are fundamentally and technologically intriguing for photocatalysis. Their extraordinary electronic, optical, and chemical properties endow them as promising materials for effectively harvesting light and catalyzing the redox reaction in photocatalysis. Here, we present a tutorial-style review of the field of 2D TMDs for photocatalysis to educate researchers (especially the new-comers), which begins with a brief introduction of the fundamentals of 2D TMDs and photocatalysis along with the synthesis of this type of material, then look deeply into the merits of 2D TMDs as co-catalysts and active photocatalysts, followed by an overview of the challenges and corresponding strategies of 2D TMDs for photocatalysis, and finally look ahead this topic.
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Affiliation(s)
- Ruijie Yang
- Department of Materials Science and Engineering, State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, P. R. China.,Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Yingying Fan
- Department of Materials Science and Engineering, State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, P. R. China.,Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Yuefeng Zhang
- Department of Materials Science and Engineering, State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, P. R. China
| | - Liang Mei
- Department of Materials Science and Engineering, State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, P. R. China
| | - Rongshu Zhu
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
| | - Jiaqian Qin
- Center of Excellence in Responsive Wearable Materials, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Jinguang Hu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Zhangxing Chen
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Yun Hau Ng
- Low-Carbon and Climate Impact Research Centre, School of Energy and Environment, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, P. R. China
| | - Damien Voiry
- Institut Européen des Membranes, IEM, UMR 5635, Université Montpellier, ENSCM, CNRS, Montpellier, France
| | - Shuang Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Qingye Lu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Qian Wang
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Jimmy C Yu
- Department of Chemistry and Materials Science and Technology Research Centre, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong 999077, China
| | - Zhiyuan Zeng
- Department of Materials Science and Engineering, State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, P. R. China.,Shenzhen Research Institute, City University of Hong Kong, Shenzhen, 518057, China
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Gao XJ, Cao JM, Yang MM, Wang Y, Dong WW, Zhao J, Li DS. Photocatalytic CO2 reduction to CH4 mediated by MoS2@NH2-MIL-68 heterojunction with water vapor. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.123931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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Heliso Dolla T, Matthews T, Wendy Maxakato N, Ndungu P, Montini T. Recent advances in transition metal sulfide-based electrocatalysts and photocatalysts for nitrogen fixation. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2022.117049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Hui X, Wang L, Yao Z, Hao L, Sun Z. Recent progress of photocatalysts based on tungsten and related metals for nitrogen reduction to ammonia. Front Chem 2022; 10:978078. [PMID: 36072702 PMCID: PMC9441816 DOI: 10.3389/fchem.2022.978078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 07/15/2022] [Indexed: 11/22/2022] Open
Abstract
Photocatalytic nitrogen reduction reaction (NRR) to ammonia holds a great promise for substituting the traditional energy-intensive Haber–Bosch process, which entails sunlight as an inexhaustible resource and water as a hydrogen source under mild conditions. Remarkable progress has been achieved regarding the activation and solar conversion of N2 to NH3 with the rapid development of emerging photocatalysts, but it still suffers from low efficiency. A comprehensive review on photocatalysts covering tungsten and related metals as well as their broad ranges of alloys and compounds is lacking. This article aims to summarize recent advances in this regard, focusing on the strategies to enhance the photocatalytic performance of tungsten and related metal semiconductors for the NRR. The fundamentals of solar-to-NH3 photocatalysis, reaction pathways, and NH3 quantification methods are presented, and the concomitant challenges are also revealed. Finally, we cast insights into the future development of sustainable NH3 production, and highlight some potential directions for further research in this vibrant field.
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Affiliation(s)
| | | | | | | | - Zhenyu Sun
- *Correspondence: Leiduan Hao, ; Zhenyu Sun,
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Li X, Liu Z, Zhu D, Yan Y, Chen Y. Controllable synthesis of few-layer ammoniated 1T'-phase WS 2 as an anode material for lithium-ion batteries. NANOSCALE 2022; 14:5869-5875. [PMID: 35362506 DOI: 10.1039/d1nr07542j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Two-dimensional transition metal dichalcogenide (TMDC) nanosheets have received significant attention as anode materials for lithium-ion batteries, especially in their metallic 1T/1T' phase. However, controllable synthesis of few-layer 1T/1T' phase is still a challenge. In the present study, we report a facile two-step hydrothermal method to controllably synthesize few-layer 1T'-phase WS2. By tuning the redox-temperature of (NH4)2WS4 from 160 to 200 °C, the thickness of 1T'-phase WS2 can be adjusted from 4-6 to 20 layers. A higher reversible capacity is achieved in 1T'-phase WS2 with a smaller thickness, but the cycling stability decreases due to the lower crystallinity. The 1T'-phase WS2 synthesized by reduction of (NH4)2WS4 at 180 °C shows a moderate thickness of 10 layers and crystallinity, exhibiting the optimal Li-ion storage properties, i.e. a reversible capacity of 855.9 mA h g-1 at 100 mA g-1 and a good rate performance of 354.4 mA h g-1 at 5000 mA g-1. These results provide new insights into understanding the impacts of layer number on the Li-ion storage properties of 1T'-phase WS2.
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Affiliation(s)
- Xiang Li
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China.
| | - Zhenzhen Liu
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Ding Zhu
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China.
- Engineering Research Center of Alternative Energy Materials and Devices, Ministry of Education, China
| | - Yigang Yan
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China.
- Engineering Research Center of Alternative Energy Materials and Devices, Ministry of Education, China
| | - Yungui Chen
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China.
- Engineering Research Center of Alternative Energy Materials and Devices, Ministry of Education, China
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Qi P, Gao X, Wang J, Liu H, He D, Zhang Q. A minireview on catalysts for photocatalytic N 2 fixation to synthesize ammonia. RSC Adv 2022; 12:1244-1257. [PMID: 35425192 PMCID: PMC8979037 DOI: 10.1039/d1ra08002d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/16/2021] [Indexed: 11/21/2022] Open
Abstract
Ammonia (NH3) is an important feedstock in chemical industry. Nowadays NH3 is mainly produced via the industrialized Haber-Bosch process, which requires substantial energy input, since it operates at high temperatures (400-650 °C) and high pressures (20-40 Mpa). From the energy conservation point of view, it is of great significance to explore an alternative avenue to synthesize NH3, which is in line with the concept of sustainable development. Very recently, photocatalytic N2 fixation (PNF) has been discovered as a safe and green approach to synthesize NH3, as it utilizes the inexhaustible solar energy and the abundant N2 in nature to synthesize NH3 under mild conditions. A highly efficient catalyst is the core of PNF. Up to now, extensive studies have been conducted to design efficient catalysts for PNF. Summarizing the catalysts reported for PNF and unraveling their reaction mechanisms could provide guidance for the design of better catalysts. In this review, we will illustrate the development of catalysts for PNF, including semiconductors, plasmonic metal-based catalysts, iron-based catalysts, ruthenium-based catalysts and several other catalysts, point out the remaining challenges and outline the future opportunities, with the aim to contribute to the development of PNF.
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Affiliation(s)
- Ping Qi
- School of Chemical and Environmental Engineering, Liaoning University of Technology Jinzhou 121001 P. R. China
| | - Xiaoxu Gao
- School of Chemical and Environmental Engineering, Liaoning University of Technology Jinzhou 121001 P. R. China
| | - Jian Wang
- School of Chemical and Environmental Engineering, Liaoning University of Technology Jinzhou 121001 P. R. China
| | - Huimin Liu
- School of Chemical and Environmental Engineering, Liaoning University of Technology Jinzhou 121001 P. R. China
| | - Dehua He
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University Beijing 100084 P. R. China
| | - Qijian Zhang
- School of Chemical and Environmental Engineering, Liaoning University of Technology Jinzhou 121001 P. R. China
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Molybdenum disulfide loading on a Z-scheme graphitic carbon nitride and lanthanum nickelate heterojunction for enhanced photocatalysis: Interfacial charge transfer and mechanistic insights. J Colloid Interface Sci 2022; 611:684-694. [PMID: 34974228 DOI: 10.1016/j.jcis.2021.12.106] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/10/2021] [Accepted: 12/16/2021] [Indexed: 12/11/2022]
Abstract
Interfacial design and the co-catalyst effect are considered to be effective to achieve separation and transport of photogenerated carriers in composite photocatalysts. In this study, a Z-scheme heterojunction was successfully combined with a co-catalyst to achieve a highly efficient LaNiO3/g-C3N4/MoS2 photocatalyst. MoS2 flakes were loaded on a hybrid material surface, which was formed by LaNiO3 nanocubes embedded on layered g-C3N4, and a good heterostructure with multiple attachment sites was obtained. Experimental studies confirmed that the Z-scheme heterojunction completely preserves the strong redox ability of the photogenerated electrons and holes. As a cocatalyst, MoS2 further promoted interfacial charge separation and transport. The synergistic effect of the Z-scheme heterojunction and co-catalyst effectively realized the transfer of photogenerated carriers from "slow transfer" to "high transfer" and promoted water decomposition and pollutant degradation. Results revealed that under simulated sunlight irradiation, LaNiO3/g-C3N4/MoS2 composites exhibit superior hydrogen evolution of 45.1 μmol h-1, which is 19.1 times that of g-C3N4 and 4.9 times that of LaNiO3/g-C3N4, respectively. Moreover, the LaNiO3/g-C3N4/MoS2 Z-scheme photocatalyst exhibited excellent photocatalytic performance for antibiotic degradation and heavy-metal ion reduction under visible light. This study might provide some insights into the development of photocatalysts for solar energy conversion and environmental remediation.
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Jin Z, Li T, Wang K, Guo X. Interface engineering: Synergism between S-scheme heterojunctions and Mo-O bonds for promote photocatalytic hydrogen evolution. J Colloid Interface Sci 2021; 609:212-223. [PMID: 34896825 DOI: 10.1016/j.jcis.2021.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 12/30/2022]
Abstract
Simple high-temperature calcination and hydrothermal methods were followed to synthesize CeO2 and Mo-S, respectively. The efficient photocatalytic hydrogen evolution activity exhibited by the composite catalysts can be attributed to the edge active sites in Mo-S. The Mo-O bonds formed between CeO2 and Mo-S could further accelerate the processes of separation and migration of electrons between the catalyst interfaces. The hybrid catalyst 10%-CeO2/Mo-S exhibiting the best hydrogen generation ability (4.3 mmol h-1g-1) was obtained by optimizing the content of CeO2 in CeO2/Mo-S. Analysis of the PL spectral profile and photocurrent response recorded for the system revealed that 10%-COMS exhibited excellent photogenerated carrier separation ability. Analysis of the LSV and EIS curves revealed that 10%-COMS exhibited the optimal hydrogen production potential. The charge migration resistance provided by the systems was lower than the charge migration resistance provided by CeO2 and Mo-S. The synergism between the S-scheme heterojunctions and the Mo-O bonds helped accelerate the separation and migration of photo-induced carriers at the catalyst interfaces. The introduction of covalent bonds in the S-scheme heterojunctions and the results presented herein can potentially help develop a new method to realize photocatalytic hydrogen evolution.
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Affiliation(s)
- Zhiliang Jin
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China.
| | - Teng Li
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China.
| | - Kai Wang
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China
| | - Xin Guo
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China
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12
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Xia S, Zhang G, Gao Z, Meng Y, Xie B, Lu H, Ni Z. 3D hollow Bi 2O 3@CoAl-LDHs direct Z-scheme heterostructure for visible-light-driven photocatalytic ammonia synthesis. J Colloid Interface Sci 2021; 604:798-809. [PMID: 34303173 DOI: 10.1016/j.jcis.2021.07.063] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/05/2021] [Accepted: 07/11/2021] [Indexed: 01/17/2023]
Abstract
In this paper, the novel 3D hollow Z-scheme heterojunction photocatalysts based on Bi2O3 and CoAl layered double hydroxides (Bi2O3@CoAl-LDHs) were prepared for efficient visible-light-driven photocatalytic ammonia synthesis. The synthesized nanohybrid exhibits excellent photocatalytic ammonia synthesis performance (48.7 μmol·L-1·h-1) and structural stability, which is primarily attributed to the fact that Z-scheme heterojunction significantly enhanced lifetime of photogenerated carriers (6.22 ns) and transfer efficiency of surface photogenerated electrons (72.5%). Strict control experiments and nitrogen isotope labeling results show that nitrogen and hydrogen in the produced ammonia come from nitrogen and water in the reactant respectively. Electron paramagnetic resonance (EPR) experiments and density functional theory (DFT) calculations further reveal that the built-in electric field due to the difference between Bi2O3 and CoAl-LDHs is the key to constructing the Z-scheme heterojunction. In addition, results of partial density of states (PDOS) show that Co in Bi2O3@CoAl-LDHs composite is the active site for photocatalytic N2 fixation.
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Affiliation(s)
- Shengjie Xia
- Department of Chemistry, College of Chemical Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China.
| | - Guanhua Zhang
- Department of Chemistry, College of Chemical Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China
| | - Zhiyan Gao
- Department of Chemistry, College of Chemical Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China
| | - Yue Meng
- School of Life Science, Huzhou University, 759 East Erhuan Road, Huzhou 313000, PR China; Department of Life and Health Sciences, Huzhou College, 313000 Huzhou, PR China
| | - Bo Xie
- Department of Chemistry, College of Chemical Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China
| | - Hanfeng Lu
- Department of Chemistry, College of Chemical Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China
| | - Zheming Ni
- Department of Chemistry, College of Chemical Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China
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