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Yuan S, Liu G, Zhang Q, Liu T, Yang J, Guan Z. Synergistic effect of Na doping and CoSe 2 cocatalyst for enhanced photocatalytic hydrogen evolution performance of ZnIn 2S 4. J Colloid Interface Sci 2024; 676:272-282. [PMID: 39029253 DOI: 10.1016/j.jcis.2024.07.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 07/12/2024] [Accepted: 07/15/2024] [Indexed: 07/21/2024]
Abstract
Element doping has been demonstrated as a useful strategy to regulate the band gap and electronic structure of photocatalyst for improving photocatalytic activity. Herein, ZnIn2S4 (ZIS) nanosheets were doped with alkali metal ions (Li+, Na+ or K+) by a simple solution method. Experimental characterizations reveal that alkali metal ions doping reduce the band gap, raise the conduction band position, and improve surface hydrophilicity of ZIS. In addition, theoretical calculations show that Na doping increases the electron density at valence band maximum and surrounding S atom, which is conducive to produce more electrons and effective utilization of electrons, respectively. Benefited from above factors, Na-doped ZIS (Na-ZIS) shows the highest photocatalytic hydrogen evolution performance. Furthermore, CoSe2 cocatalyst is loaded on the surface of Na-ZIS (CS/Na-ZIS), which further improve the charge separation and prolong the lifetime of charges. As a result, the optimized CS/Na-ZIS shows a H2 evolution rate of 4525 μmol·g-1·h-1 with an apparent quantum efficiency of 27.5 % at 420 nm, which are much higher than that of pure ZIS. This study provides an in-depth understanding of the synergistic effect of Na doping and CoSe2 cocatalyst in ameliorating photocatalytic activity.
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Affiliation(s)
- Shuya Yuan
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Institute of Nanoscience and Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Guowei Liu
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Institute of Nanoscience and Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Qingsheng Zhang
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Institute of Nanoscience and Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Taifeng Liu
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Institute of Nanoscience and Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Jianjun Yang
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Institute of Nanoscience and Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Zhongjie Guan
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Institute of Nanoscience and Engineering, Henan University, Kaifeng 475004, Henan, China.
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2
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Yang C, Yang J, Zhu J, Liu R, Duan X, Liu L, Ding C, Liu W, Li J, Ren S, Yao L, Liu Q. Tailoring local electron density and molecular oxygen activation behavior via potassium/halogen co-tuned graphitic carbon nitride for enhanced photocatalytic activity. J Colloid Interface Sci 2024; 676:89-100. [PMID: 39018814 DOI: 10.1016/j.jcis.2024.07.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 06/30/2024] [Accepted: 07/11/2024] [Indexed: 07/19/2024]
Abstract
Graphite carbon nitride (g-C3N4) is a promising photocatalyst,but its inadequate reactive sites, weak visible light responsiveness, and sluggish separation of photogenerated carriers hamperthe improvement of photodegradation efficiency. In this work, potassium (K) and halogen atoms co-modified g-C3N4 photocatalysts (CN-KX, X = F, Cl, Br, I) were constructed to adjust the electrical and band structure for enhanced generation of reactive oxygen species. Through an integration of theoretical calculation and experimental exploration, the doping sites of halogen atoms as well as the evolution of crystal, band, and electronic structures were investigated. The results show that a covalent bond is formed between the F atom and the C atom, substitution of the N atom occurs with a Cl atom, and doping of Br, I, or K atoms takes place at the interstitial site. CN-KX photocatalysts exhibits lower band gap, faster photogenerated electron migration, and enhanced photocatalytic activity. Specifically, the CN-KI photocatalyst exhibits the highest photodegradation efficiency because of its smaller interplanar spacing, formation of the midgap state, and adjustable local electron density. Equally, the doping of I atom not only provides a stable adsorption site for oxygen (O2) but also facilitates electron transfer, promoting the production of superoxide radicals (O2-) and contributing to the process of photodegradation.
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Affiliation(s)
- Chen Yang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Jian Yang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
| | - Jiaqing Zhu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Runxue Liu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Xu Duan
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Lang Liu
- School of Materials and Environment, Guangxi Minzu University, Nanning, Guangxi 530006, China; Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutrality, Nanning, Guangxi 530006, China.
| | - Chunlian Ding
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Weizao Liu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Jiangling Li
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Shan Ren
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Lu Yao
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Qingcai Liu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
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Liu D, Zhao C, Chen M, Yang Y, Qian J, Xie X, Pan L, Zhang F, Tao L, Wu W, Ni T. Enhanced visible light photocatalytic performance of carbon and oxygen co-doped carbon nitride with a three-dimensional structure: Performance and mechanism study. J Colloid Interface Sci 2024; 665:452-464. [PMID: 38537591 DOI: 10.1016/j.jcis.2024.03.140] [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: 11/29/2023] [Revised: 03/07/2024] [Accepted: 03/20/2024] [Indexed: 04/17/2024]
Abstract
As a cost-effective photocatalyst, carbon nitride (g-C3N4) holds tremendous promise for addressing energy shortages and environmental pollution. However, its application is limited by disadvantages such as low specific surface area and easy recombination of photogenerated electron-hole pairs. This study introduces C and O co-doped g-C3N4 with a three-dimensional (3D) structure achieved through a straightforward one-step calcination process, demonstrating excellent photocatalytic activity of hydrogen production and oxytetracycline degradation, with superoxide radicals as the primary active species. We propose a plausible enhanced mechanism based on systematic characterizations and density functional theory calculations. The 3D structure confers a substantial specific surface area, enhancing both the adsorption area and active sites of catalysts while bolstering structural stability. Co-doping optimizes the band structure and electric conductivity of the catalyst, facilitating rapid migration of photogenerated charges. The synergistic effects of these enhancements significantly elevate the photocatalytic performance. This study presents a convenient and feasible method for the preparation of dual-regulated photocatalysts with outstanding performance.
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Affiliation(s)
- Dong Liu
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China.
| | - Congyue Zhao
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Minghui Chen
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Yawen Yang
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Jianing Qian
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Xiaozhou Xie
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Likun Pan
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China.
| | - Fengquan Zhang
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Ling Tao
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Weidong Wu
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Tianjun Ni
- School of Basic Medical Science, Xinxiang Medical University, Xinxiang 453003, China.
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Abid MZ, Tanveer A, Rafiq K, Rauf A, Jin R, Hussain E. Proceeding of catalytic water splitting on Cu/Ce@g-C 3N 4 photocatalysts: an exceptional approach for sunlight-driven hydrogen generation. NANOSCALE 2024; 16:7154-7166. [PMID: 38502569 DOI: 10.1039/d4nr00111g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Increasing energy demands and environmental problems require carbon-free and renewable energy generation systems. For this purpose, we have synthesized efficient photocatalysts (i.e., g-C3N4, Cu@g-C3N4, Ce@g-C3N4 and Cu/Ce@g-C3N4) for H2 evolution from water splitting. Their optical, structural and electrochemical properties were investigated by UV-Vis-DRS, PL, XRD, FTIR, Raman and EIS methods. Their surface morphologies were evaluated by AFM and SEM analyses. Their chemical characteristics, compositions and stability were assessed using XPS, EDX and TGA techniques. Photoreactions were performed in a quartz reactor (150 mL/Velp-UK), whereas hydrogen generation activities were monitored using a GC-TCD (Shimadzu-2014/Japan). The results depicted that Cu/Ce@g-C3N4 catalysts are the most active catalysts that deliver 23.94 mmol g-1 h-1 of H2. The higher rate of H2 evolution was attributed to the active synergism between Ce and Cu metals and the impact of surface plasmon electrons (SPEs) of Cu that were produced during the photoreaction. The rate of H2 production was optimized by controlling various factors, including the catalyst amount, light intensity, pH, and temperature of the reaction mixture. It has been concluded that the current study holds promise to replace the conventional and costly catalysts used for hydrogen generation technologies.
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Affiliation(s)
- Muhammad Zeeshan Abid
- Institute of Chemistry, Inorganic Materials Laboratory 52S, The Islamia University of Bahawalpur, 63100, Pakistan.
| | - Aysha Tanveer
- Institute of Chemistry, Inorganic Materials Laboratory 52S, The Islamia University of Bahawalpur, 63100, Pakistan.
| | - Khezina Rafiq
- Institute of Chemistry, Inorganic Materials Laboratory 52S, The Islamia University of Bahawalpur, 63100, Pakistan.
| | - Abdul Rauf
- Institute of Chemistry, Inorganic Materials Laboratory 52S, The Islamia University of Bahawalpur, 63100, Pakistan.
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania-15213, USA
| | - Ejaz Hussain
- Institute of Chemistry, Inorganic Materials Laboratory 52S, The Islamia University of Bahawalpur, 63100, Pakistan.
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania-15213, USA
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Priya BS, Kumaravel S, Alagarasan JK, Devanesan S, Viji A, Lee M, Shanthi M. Solar-activated and hydrothermally synthesized effective rGO/Ag 2S composites for the destruction of naphthol green B dye and antibacterial applications. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:95. [PMID: 38374258 DOI: 10.1007/s10653-024-01876-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 01/16/2024] [Indexed: 02/21/2024]
Abstract
Graphene-based nanocomposites are developing as a new class of materials with several uses. The varied weight percentages of rGO on Ag2S catalysts were synthesized using a simple hydrothermal process and employed for the decomposition of anionic dye naphthol green B (NGB) under solar light. The reduced graphene oxide-based silver sulfide (rGO/Ag2S) nanoparticles were then examined using XRD, SEM, EDS, HR-TEM, XPS, UV-DRS, and PL analysis. Using solar light, the photocatalytic activity of the produced catalyst was examined for the degradation of naphthol green B (NGB) in an aqueous solution. At pH 9, rGO/Ag2S is discovered to be more effective than the other catalysts for the NGB dye mineralization. Analyses have been conducted on the influence of operational parameters on the photo-mineralization of NGB, including the initial pH, initial dye concentration, and catalyst dosage. The dye concentration increased; the efficiency of photocatalytic degradation tended to decrease. Chemical oxygen demand (COD) studies have verified the NGB dye mineralization. Active species trapping revealed that holes, hydroxyl radicals, and superoxide radicals all played major roles in the photocatalytic deterioration of NGB processes. Additionally, a potential mechanism of NGB dye degradation by rGO/Ag2S catalyst is presented. The synthesized compound was further evaluated for antibacterial activity, and the results indicated that rGO/Ag2S were potentially effective antibacterial agents.
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Affiliation(s)
- B Sathya Priya
- Department of Chemistry, Annamalai University, Annamalainagar, Tamil Nadu, 608002, India
| | - Sakthivel Kumaravel
- Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, 602105, India
- Department of Environmental Engineering, Korea Maritime and Ocean University, Busan, 49112, Republic of Korea
| | | | - Sandhanasamy Devanesan
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, 11451, Riyadh, Saudi Arabia
| | - A Viji
- Department of Physics, Kongunadu College of Engineering and Technology, Thottiyam, Tamil Nadu, 621215, India
| | - Moonyong Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan-Si, 38541, Republic of Korea.
| | - M Shanthi
- Department of Chemistry, Annamalai University, Annamalainagar, Tamil Nadu, 608002, India.
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Zhang X, Yuan H, Bao J, Xiao W, He G. Interfacial construction of SnS 2/Zn 0.2Cd 0.8S nanopolyhedron heterojunctions for enhanced photocatalytic hydrogen evolution. J Colloid Interface Sci 2023; 651:254-263. [PMID: 37542900 DOI: 10.1016/j.jcis.2023.07.136] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 08/07/2023]
Abstract
ZnCdS, a metal chalcogenide solid solution, has attracted significant attention. However, two primary challenges hinder its widespread application in photocatalytic hydrogen evolution: the rapid recombination rate of photogenerated carriers and susceptibility to photo-oxidation in the aqueous environments. In this article, a facile hydrothermal route was employed for the first time to uniformly assemble SnS2 nanoparticles onto the surface of Zn0.2Cd0.8S (ZCS) nanopolyhedra. The intimate contact of two materials resulted in the formation of heterojunctions. By adjusting the content of SnS2, the hydrogen evolution reaction (HER) performance was optimized to reach up to 12170 μmol/gh, which is 1.9 times of the pristine ZCS. Notably, the photocatalyst demonstrated remarkable stability with an apparent quantum yield (AQY) of 15.5% at 420 nm. The enhanced photocatalytic performance can be attributed to the following factors: (i) The heterojunction composite, with larger surface area and more micropores, provides additional active sites and exhibits high photocatalytic activity; (ii) The internal electric field accelerates the separation of photogenerated carriers and reduces the recombination rate of electron-hole pairs; (iii) The photogenerated holes can be quickly transferred to the valence band of SnS2 and react with triethanolamine, thereby significantly reducing the photo-oxidation of ZCS. This work not only proposed a feasible route to improve the photocatalytic activity of ZCS, but also provided insights into the role of heterojunctions and the reaction mechanism.
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Affiliation(s)
- Xin Zhang
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510006, China; Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China
| | - Haohuan Yuan
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510006, China; Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China
| | - Jiao Bao
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510006, China; Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China
| | - Wenting Xiao
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510006, China; Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China
| | - Guannan He
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510006, China; Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China.
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7
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Fu X, Zhou G, Li J, Yao Q, Han Z, Yang R, Chen X, Wang Y. Critical review on modified floating photocatalysts for emerging contaminants removal from landscape water: problems, methods and mechanism. CHEMOSPHERE 2023; 341:140043. [PMID: 37660787 DOI: 10.1016/j.chemosphere.2023.140043] [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: 05/22/2023] [Revised: 07/13/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
Due to the disorderly discharge in modern production and daily life of people, emerging contaminants(ECs) began to appear in landscape water, and have become a key public concern. Because of the unique characteristics of landscape water, it is difficult to efficiently remove ECs either by natural purification or by traditional large-scale sewage treatment facilities. The ideal purification method is to remove them while maintaining a beautiful environment. Possessing the feature of low-density, floating photocatalysts could harvest sufficient light on the surface of the water for photocatalytic degradation, which may be an important supplement for ECs treatment in landscape water. This paper gave a review related to floating photocatalysts and proposed an idea of combining floating photocatalysts to construct bionic photocatalytic materials for contaminative landscape water treatment. Six types of common floating substrates and corresponding applications for floating photocatalysts were concluded in this paper, and the main problem leading to the low efficiency of photocatalysts and three corresponding three improvement strategies were discussed. Besides, the modification mechanisms of photocatalysts were discussed thoroughly. On this basis, the engineering application prospects of bionic photocatalytic materials were proposed to remove ECs in landscape water.
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Affiliation(s)
- Xiaoning Fu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Guangzhu Zhou
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Jianping Li
- China Testing & Certification International Group Qingdao Jingcheng Testing Co., Ltd., Qingdao, 266426, China.
| | - Qiuhui Yao
- The Third Exploration Team, Shandong Bureau of Coal Geology, Tai'an, 271000, China.
| | - Zuozhen Han
- Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Rongchao Yang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Xi Chen
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Yuanhao Wang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
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Zhou Y, Chai Y, Sun H, Li X, Liu X, Liang Y, Gong X, Wu Z, Liu C, Qin P. Design strategies and mechanisms of g-C 3N 4-based photoanodes for photoelectrocatalytic degradation of organic pollutants in water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118545. [PMID: 37418928 DOI: 10.1016/j.jenvman.2023.118545] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/17/2023] [Accepted: 06/27/2023] [Indexed: 07/09/2023]
Abstract
Emerging photoelectrocatalytic (PEC) systems integrate the advantages of photocatalysis and electrocatalysis and are considered as a promising technology for solving the global organic pollution problem in water environments. Among the photoelectrocatalytic materials applied for organic pollutant degradation, graphitic carbon nitride (CN) has the combined advantages of environmental compatibility, stability, low cost, and visible light response. However, pristine CN has disadvantages such as low specific surface area, low electrical conductivity, and high charge complexation rate, and how to improve the degradation efficiency of PEC reaction and the mineralization rate of organic matter is the main problem faced in this field. Therefore, this paper reviews the progress of various functionalized CN used for PEC reaction in recent years, and the degradation efficiency of these CN-based materials is critically evaluated. First, the basic principles of PEC degradation of organic pollutants are outlined. Then, engineering strategies to enhance the PEC activity of CN (including morphology control, elemental doping, and heterojunction construction) are focused on, and the structure-activity relationships between these engineering strategies and PEC activity are discussed. In addition, the important role of influencing factors on the PEC system is summarized in terms of mechanism, to provide guidance for the subsequent research. Finally, suggestions and perspectives are provided for the preparation of efficient and stable CN-based photoelectrocatalysts for practical wastewater treatment applications.
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Affiliation(s)
- Yunfei Zhou
- College of Resources and Environment, Xiangtan University, Xiangtan, 411105, PR China; College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China
| | - Youzheng Chai
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Haibo Sun
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Xueying Li
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Xingwang Liu
- College of Resources and Environment, Xiangtan University, Xiangtan, 411105, PR China.
| | - Yunshan Liang
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Xiaomin Gong
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Zhibin Wu
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China.
| | - Chao Liu
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Pufeng Qin
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China.
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9
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Sun M, Zhu C, Wei S, Chen L, Ji H, Su T, Qin Z. Phosphorus-Doped Hollow Tubular g-C 3N 4 for Enhanced Photocatalytic CO 2 Reduction. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6665. [PMID: 37895646 PMCID: PMC10608179 DOI: 10.3390/ma16206665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023]
Abstract
Photocatalytic CO2 reduction is a tactic for solving the environmental pollution caused by greenhouse gases. Herein, NH4H2PO4 was added as a phosphorus source in the process of the hydrothermal treatment of melamine for the first time, and phosphorus-doped hollow tubular g-C3N4 (x-P-HCN) was fabricated and used for photocatalytic CO2 reduction. Here, 1.0-P-HCN exhibited the largest CO production rate of 9.00 μmol·g-1·h-1, which was 10.22 times higher than that of bulk g-C3N4. After doping with phosphorus, the light absorption range, the CO2 adsorption capacity, and the specific surface area of the 1.0-P-HCN sample were greatly improved. In addition, the separation of photogenerated electron-hole pairs was enhanced. Furthermore, the phosphorus-doped g-C3N4 effectively activated the CO2 adsorbed on the surface of phosphorus-doped g-C3N4 photocatalysts, which greatly enhanced the CO production rate of photocatalytic CO2 reduction over that of g-C3N4.
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Affiliation(s)
- Manying Sun
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.S.); (C.Z.); (S.W.); (L.C.); (H.J.)
| | - Chuanwei Zhu
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.S.); (C.Z.); (S.W.); (L.C.); (H.J.)
| | - Su Wei
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.S.); (C.Z.); (S.W.); (L.C.); (H.J.)
| | - Liuyun Chen
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.S.); (C.Z.); (S.W.); (L.C.); (H.J.)
| | - Hongbing Ji
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.S.); (C.Z.); (S.W.); (L.C.); (H.J.)
- Fine Chemical Industry Research Institute, Sun Yat-sen University, Guangzhou 510275, China
| | - Tongming Su
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.S.); (C.Z.); (S.W.); (L.C.); (H.J.)
| | - Zuzeng Qin
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.S.); (C.Z.); (S.W.); (L.C.); (H.J.)
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10
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Zhou M, Wan G, Wang G, Wieme T, Edeleva M, Cardon L, D'hooge DR. Carbon Nitride Grafting Modification of Poly(lactic acid) to Maximize UV Protection and Mechanical Properties for Packaging Applications. ACS APPLIED MATERIALS & INTERFACES 2023; 15:45300-45314. [PMID: 37713339 DOI: 10.1021/acsami.3c10085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/17/2023]
Abstract
Due to their biobased nature and biodegradability, poly(lactic acid) (PLA) rich blends are promising for processing in the packaging industry. However, pure PLA is brittle and UV transparent, which limits its application, so the exploration of nanocomposites with improved interfacial interactions and UV absorbing properties is worthwhile. We therefore developed and optimized synthesis routes for well-designed nanocomposites based on a PLA matrix and graphitic carbon nitride (g-C3N4; CN) nanofillers. To enhance the interfacial interaction with the PLA matrix, a silane-coupling agent (γ-methacryloxypropyl trimethoxysilane, KH570) is chemically grafted onto the CN surface after controlled oxidation with nitric acid and hydrogen peroxide. Interestingly, only 1 wt % of CNO-KH570, as synthesized under mild conditions, is needed to significantly improve the UV absorption, blocking even a large part of both UV-C, UV-B, and UV-A outperforming the UV absorption performance of PLA and, for instance, polyethylene terephthalate (PET). The low nanofiller loading of 1 wt % also results in a higher ductility with an increase in elongation at break (+73%), maintaining the tensile modulus. The results on a joint optimization of UV protection and mechanical properties are supported by a broad range of experimental characterizations, including FTIR, XRD, DSC, DSEM, FETEM, XPS, FTIR, TGA, and BET N2 adsorption-desorption analysis.
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Affiliation(s)
- Maofan Zhou
- Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 130, B-9052 Zwijnaarde (Ghent), Belgium
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, B-9052 Zwijnaarde (Ghent), Belgium
| | - Gengping Wan
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Material Science and Engineering, Hainan University, Haikou, Hainan 570228, China
| | - Guizhen Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Material Science and Engineering, Hainan University, Haikou, Hainan 570228, China
| | - Tom Wieme
- Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 130, B-9052 Zwijnaarde (Ghent), Belgium
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, B-9052 Zwijnaarde (Ghent), Belgium
| | - Mariya Edeleva
- Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 130, B-9052 Zwijnaarde (Ghent), Belgium
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, B-9052 Zwijnaarde (Ghent), Belgium
| | - Ludwig Cardon
- Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 130, B-9052 Zwijnaarde (Ghent), Belgium
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, B-9052 Zwijnaarde (Ghent), Belgium
| | - Dagmar R D'hooge
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, B-9052 Zwijnaarde (Ghent), Belgium
- Centre for Textile Science and Engineering, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 70A, B-9052 Zwijnaarde (Ghent), Belgium
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11
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Liu Z, Yao S, Li Y. Plasmonic-driven charge separation through combining Ag nanoparticles (Ag NPs) to form a double Z-scheme heterostructure in WO 3/BiOCl/g-C 3N 4 for the photocatalytic degradation of antibiotics. Dalton Trans 2023; 52:12999-13008. [PMID: 37655490 DOI: 10.1039/d3dt02520a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Integrating a heterojunction system with the impact of surface plasmon resonance (SPR) is an executable and innovative tactic for photocatalyst amelioration. Ag nanoparticle (Ag NP)-modified WO3/BiOCl/g-C3N4 (WB-CN) was favorably fabricated through in situ photo deposition assembly to form double heterojunctions (A-WBCN). The degradation performance of A-WBCN is better than that of pure g-C3N4 (CN) and WO3/BiOCl (WB), it can degrade more than 90% of OFLX within 20 minutes, due to Ag NPs performing as a bridge for electron mediators, apart from the implications of SPR in A-WBCN. The results of UV diffuse reflectance spectroscopy indicate that loading with Ag NPs can expand the light absorption range of WB-CN to near-infrared. The photoluminescence spectra and transient photocurrent spectra indicate that Ag NP loading significantly improves the separation efficiency of photogenerated carriers. Density functional theory (DFT) simulation results show that the introduction of Ag NPs can change the direction of carrier movement, resulting in bending of the energy bands of WB and CN, improving the redox ability of A-WBCN, and improving its photocatalytic efficiency. In addition, the intermediate products of OFLX was determined by HPLC-MS analysis. The spin electron resonance (ESR) results indicate that ˙O2- and ˙OH are the main active species in photocatalytic degradation. This work furnishes a fresh idea for upgrading photocatalytic performance and advancing electron transfer.
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Affiliation(s)
- Zhangmeng Liu
- School of Materials Science and Engineering, Hainan University, Haikou 570228, PR China.
| | - Shuaiqi Yao
- School of Science, Hainan University, Haikou 570228, PR China
| | - Yayao Li
- School of Science, Hainan University, Haikou 570228, PR China
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12
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He F, Yuan H, Hu Y, Huang J, Wang Z, Peng S, Li Y. Construction of π-conjugated crystalline carbon dots with carbon nitride nanofragments for efficient photocatalytic H 2 evolution. Chem Commun (Camb) 2023; 59:10016-10019. [PMID: 37523209 DOI: 10.1039/d3cc02859c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Crystalline carbon dots (CCDs) embedded in carbon nitride (CN) nanofragments (CCDs-CN) have been developed through facile molten salt treatment. Molten salt treatment not only reconstructs CN layered sheets to form nanofragments, but also promotes the crystallization of CDs-CN. The π-conjugated electric field between CCDs and CN accelerates charge carrier separation for efficient photocatalytic H2 evolution.
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Affiliation(s)
- Fang He
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, P. R. China.
| | - Hubo Yuan
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, P. R. China.
| | - Yan Hu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, P. R. China.
| | - Jiawei Huang
- School of Physics and Materials Science, Nanchang University, Nanchang, 330031, P. R. China
| | - Zhenxing Wang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, P. R. China.
| | - Shaoqin Peng
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, P. R. China.
| | - Yuexiang Li
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, P. R. China.
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Wang Y, Huang Y, Gou G, Li N, Li L, He Y, Liu C, Lai B, Sun H. Dispersed cobalt embedded nitrogen-rich carbon framework activates peroxymonosulfate for carbamazepine degradation: cobalt leaching restriction and mechanism investigation. CHEMOSPHERE 2023; 321:138026. [PMID: 36731671 DOI: 10.1016/j.chemosphere.2023.138026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/19/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
Metal leaching is a key issue in cobalt-based catalysts/PMS systems, which results in the decline of catalytic ability and serious secondary pollution. Hence, a nitrogen-rich carbon framework with cobalt node (Co-NC-920) with low cobalt leaching was synthesized based on zeolite imidazole framework (ZIF) and g-C3N4 to activate peroxymonosulfate (PMS) for the degradation of carbamazepine (CBZ). With the restriction of nitrogen-rich carbon framework, cobalt can disperse better and form stable cobalt-nitrogen bonds, thus only 0.09 mg/L cobalt ions were leached in the solution. More than 99.9% of CBZ can be removed within 30 min of PMS addition. Further investigation revealed that 1O2, SO4•- and high-valent cobalt species were primarily responsible for CBZ degradation in the Co-NC-920/PMS system and different reactive oxygen species (ROS) were distinguished and quantified, finding 1O2 was predominant. The degradation process was realized by the coexistence of free radicals and non-free radicals. Moreover, CBZ degradation capacity of the catalyst was evaluated under the influence of common anions and in actual waterbody. Finally, the possible degradation pathways of CBZ were proposed and the toxicity of the intermediates was analyzed. This work provides a new approach for the synthesis of cobalt-based nitrogen-rich carbon catalysts with low leaching and high efficient.
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Affiliation(s)
- Yuesen Wang
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China
| | - Yanchun Huang
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China
| | - Ge Gou
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China
| | - Naiwen Li
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China
| | - Longguo Li
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China
| | - Yuxin He
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China
| | - Chao Liu
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China
| | - Bo Lai
- Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu, 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu, 610065, China
| | - Hailong Sun
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China.
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Chen C, Liu F, Zhang Q, Zhang Z, Liu Q, Fang X. Theoretical design and experimental study of pyridine-incorporated polymeric carbon nitride with an optimal structure for boosting photocatalytic CO2 reduction. CHINESE JOURNAL OF CATALYSIS 2023. [DOI: 10.1016/s1872-2067(22)64159-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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15
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Wang Z, Li J, Fu S, Guo D, Tang J, Yang X, Xu R, Sui G, Chen S. Construction of MoS2/CdS/Bi2MoO6 Z-scheme photocatalyst for efficient photocatalytic degradation under visible-light. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.123957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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16
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Chen L, Liu X, Wang D, Xia Y, Yan G, Huang X, Wang X. Plasmon Au/K-doped defective graphitic carbon nitride for enhanced hydrogen production. Dalton Trans 2023; 52:2845-2852. [PMID: 36756969 DOI: 10.1039/d2dt03925g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Knowledge of the photocatalytic H2-evolution mechanism is of critical importance for water splitting, and for designing active catalysts for a sustainable energy supply. In this study, we prepared plasmon Au-modified K-doped defective graphitic carbon nitride (Au/KCNx) and then applied it in photocatalytic hydrogen-production tests. The hydrogen-production rate of the Au/KCNx photocatalyst (8.85 mmol g-1 h-1) was found to be almost 104 times higher than that of Au/g-C3N4 (0.085 mmol g-1 h-1), together with an apparent quantum efficiency of 12.8% at 420 nm. It could significantly improve the photocatalytic activities of the Au/KCNx sample, which was attributed to the synergistic effects of the plasmon effect, potassium doping, and nitrogen vacancy. In addition, the Au/KCNx photocatalyst had a large surface area, which was beneficial for photogenerated carrier separation and transfer. The novel strategy proposed here is a potential new method for the development of graphitic carbon nitride photocatalysts with obviously enhanced activities.
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Affiliation(s)
- Lu Chen
- Department of Chemistry, Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, PR China
| | - Xiyao Liu
- Department of Chemistry, Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, PR China
| | - Deling Wang
- Department of Chemistry, Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, PR China
| | - Yuzhou Xia
- Department of Chemistry, Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, PR China
| | - Guiyang Yan
- Department of Chemistry, Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, PR China
| | - Xueyan Huang
- School of Automobile, Fujian Chuanzheng Communications College, Fuzhou, 350002, PR China
| | - Xuxu Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, PR China
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Xu JJ, Lu YN, Tao FF, Liang PF, Zhang PA. ZnO Nanoparticles Modified by Carbon Quantum Dots for the Photocatalytic Removal of Synthetic Pigment Pollutants. ACS OMEGA 2023; 8:7845-7857. [PMID: 36872993 PMCID: PMC9979235 DOI: 10.1021/acsomega.2c07591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Synthetic pigment pollutants caused by the rapid development of the modern food industry have become a serious threat to people's health and quality of life. Environmentally friendly ZnO-based photocatalytic degradation exhibits satisfactory efficiency, but some shortcomings of large band gap and rapid charge recombination reduce the removal of synthetic pigment pollutants. Here, carbon quantum dots (CQDs) with unique up-conversion luminescence were applied to decorate ZnO nanoparticles to effectively construct the CQDs/ZnO composites via a facile and efficient route. The ZnO nanoparticles with a spherical-like shape obtained from a zinc-based metal organic framework (zeolitic imidazolate framework-8, ZIF-8) were coated by uniformly dispersive quantum dots. Compared with single ZnO particles, the obtained CQDs/ZnO composites exhibit enhanced light absorption capacity, decreased photoluminescence (PL) intensity, and improved visible-light degradation for rhodamine B (RhB) with the large apparent rate constant (k app). The largest k app value in the CQDs/ZnO composite obtained from 75 mg of ZnO nanoparticles and 12.5 mL of the CQDs solution (∼1 mg·mL-1) was 2.6 times that in ZnO nanoparticles. This phenomenon may be attributed to the introduction of CQDs, leading to the narrowed band gap, an extended lifetime, and the charge separation. This work provides an economical and clean strategy to design visible-light-responsive ZnO-based photocatalysts, which is expected to be used for the removal of synthetic pigment pollutants in food industry.
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18
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Cyano group modified graphitic carbon nitride with K intercalation for sustainable photodegradation of pharmaceutical waste. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2022.104617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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19
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Chamanehpour E, Hossein Sayadi M, Hajiani M. Metal-organic framework coordinated with g-C3N4 and metal ions for boosting photocatalytic H2 production under sunlight. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114221] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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20
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Meng S, Nan Z. Selective Degradation in Fenton-like Reaction Catalyzed by Na and Fe Co-doped g-C3N4 Catalyst. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.123026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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21
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Wu SJ, Shi Y, Sun K, Yuan XY, Tang S, Yu B. Potassium doping carbon nitride: Dramatically enhanced photocatalytic properties for hydroxyalkylation of quinoxalin-2(1H)‑ones with alcohol under air atmosphere. J Catal 2022. [DOI: 10.1016/j.jcat.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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22
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Lu Z, Li S, Xiao J. K–Ca Synergetic Modified g-C3N4 for Efficient Photocatalytic NO Removal with Low-NO2-Emission. Catal Letters 2022. [DOI: 10.1007/s10562-022-04193-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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23
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Wei W, Luo J, Liu S, Zhou Y, Ma J. Enhancing the photocatalytic performance of g-C3N4 by using iron single-atom doping for the reduction of U(VI) in aqueous solutions. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Recyclable surface enhanced Raman scattering monitoring of nucleotides and their metabolites based on Au nanoflowers modified g-C3N4 nanosheets. Colloids Surf B Biointerfaces 2022; 218:112735. [DOI: 10.1016/j.colsurfb.2022.112735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/18/2022] [Accepted: 07/27/2022] [Indexed: 11/19/2022]
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25
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Zhang K, Song H, An Z, Zhang J, Zhu Y, Chai Z, Shu X, He J. The mesoscale mechanism of P-dopant defects and interface synergy for phenols degradation. Chem Asian J 2022; 17:e202200476. [PMID: 35750634 DOI: 10.1002/asia.202200476] [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: 05/06/2022] [Revised: 06/12/2022] [Indexed: 11/10/2022]
Abstract
The semiconductor based photocatalysis has become a hot spot of current research, and the key challenges are the construction of strong functional heterojunction photocatalysts, and insights on the working mechanism involved. In this work, we constructed a NiFe- LDHs/P-TCN heterojunction with P-dopant defects and interface synergy, and elucidated its mesoscale mechanism among different constituent interfaces. The interface photoelectron transfer was detected by PAS, EPR and other methods, and the enhancing mechanism of the defect sites for interface electron transfer and photocatalytic activity was proposed. The interfacial electrons, photoelectric properties and photocatalytic activity are found to be positively correlated. The result is conducive for a better understanding on working mechanism of heterogeneous photocatalysts, which opened up a broader research space for the rational design and construction of functional interfaces.
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Affiliation(s)
- Kaiqi Zhang
- Beijing University of Chemical Technology, Chemical Institute, CHINA
| | - Hongyan Song
- Beijing University of Chemical Technology, CHINA
| | - Zhe An
- Beijing University of Chemical Technology, Chemical Institute, CHINA
| | - Jian Zhang
- Beijing University of Chemical Technology, Chemical Institute, CHINA
| | - Yanru Zhu
- Beijing University of Chemical Technology, Chemical Institute, CHINA
| | - Zhigang Chai
- Beijing University of Chemical Technology, Chemical Institute, CHINA
| | - Xin Shu
- Beijing University of Chemical Technology, Chemical Institute, CHINA
| | - Jing He
- Beijing University of Chemical Technology, Chemical Institute, CHINA
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26
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Liu Z, Zhang A, Liu Y, Fu Y, Du Y. Local surface plasmon resonance (LSPR)-coupled charge separation over g-C3N4-supported WO3/BiOCl heterojunction for photocatalytic degradation of antibiotics. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Balakrishnan A, Chinthala M. Comprehensive review on advanced reusability of g-C 3N 4 based photocatalysts for the removal of organic pollutants. CHEMOSPHERE 2022; 297:134190. [PMID: 35248593 DOI: 10.1016/j.chemosphere.2022.134190] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/24/2022] [Accepted: 03/01/2022] [Indexed: 05/19/2023]
Abstract
Graphitic carbon nitride (g-C3N4) has attained significant research attention in energy and environmental remediation due to its excellent electronic structure, greater physical and chemical properties, and abundance. However, graphitic carbon nitride faces severe problems because of its high recombination rate and higher mass loss of the catalyst during recovery operations. This review emphasizes the methods to overcome the difficulties associated with recovery and reusability of the g-C3N4 based photocatalyst towards the redemption of pollutants present in wastewater. Different strategies like magnetic g-C3N4 based photocatalysts, immobilized photocatalytic systems, and photocatalytic membranes and their usage in photocatalytic applications are well described. Different preparation strategies of the graphic carbon nitride-based composites are elucidated. The key challenges and future perspectives of adopting these methods for photocatalytic applications are also mentioned.
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Affiliation(s)
- Akash Balakrishnan
- Process Intensification Laboratory, Department of Chemical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, 769 008, India
| | - Mahendra Chinthala
- Process Intensification Laboratory, Department of Chemical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, 769 008, India.
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28
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Chen F, Zhang Y, Huang H. Layered photocatalytic nanomaterials for environmental applications. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.05.037] [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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29
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Jiang J, Wang G, Shao Y, Wang J, Zhou S, Su Y. Step-scheme ZnO@ZnS hollow microspheres for improved photocatalytic H2 production performance. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63889-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Kumar A, Kashyap S, Sharma M, Krishnan V. Tuning the surface and optical properties of graphitic carbon nitride by incorporation of alkali metals (Na, K, Cs and Rb): Effect on photocatalytic removal of organic pollutants. CHEMOSPHERE 2022; 287:131988. [PMID: 34523438 DOI: 10.1016/j.chemosphere.2021.131988] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/20/2021] [Accepted: 08/21/2021] [Indexed: 06/13/2023]
Abstract
Alkali metals have been known for their intercalation properties and can be employed for the separation of stacking in sheet-like materials. In this work, alkali metals (Na, K, Rb and Cs) have been systematically incorporated in varying concentrations in g-C3N4 sheets and their effect on resulting optical, surface and photocatalytic properties have been explored in detail. It was observed that the optical, electronic and surface properties of g-C3N4 were altered upon the incorporation of different alkali metal ions. The band gap and specific surface area of resulting materials were decreased as compared to the pristine g-C3N4. In addition, the alkali metal incorporation in g-C3N4 sheets showed the formation of cyanide groups and nitrogen vacancies in the resulted materials. Further, the photocatalytic activity of g-C3N4 and alkali metal incorporated g-C3N4 was calculated by studying the degradation of acid red 94 dye under visible light irradiation. It was observed that the photocatalytic activity of pristine g-C3N4 sheets was decreased with an increase in the concentration of alkali salt used during the synthesis of alkali metal incorporated g-C3N4. This decrease in the activity could arise due to the decreased surface area, detrimental amount of nitrogen vacancies and high concentration of alkali metal ions incorporated in the structural framework of g-C3N4 sheets. This work provides a unique example of the adverse effect of alkali metal ions on photocatalytic activity of g-C3N4 and paves future directions for the improvement of the performance of g-C3N4 based materials.
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Affiliation(s)
- Ashish Kumar
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, 175075, Himachal Pradesh, India
| | - Saniya Kashyap
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, 175075, Himachal Pradesh, India
| | - Manisha Sharma
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, 175075, Himachal Pradesh, India
| | - Venkata Krishnan
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, 175075, Himachal Pradesh, India.
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31
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Chen X, Xu Y, Xu G. Modification of graphite carbon nitride by adding an ultra-micro amount of triaminotriphenylamine for superior photocatalytic hydrogen evolution. NEW J CHEM 2022. [DOI: 10.1039/d2nj00393g] [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
The electron–hole pairs separated effectively by intermolecular charge transfer between triphenylamine and heptazine of doped g-C3N4 improve photocatalytic hydrogen evolution.
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Affiliation(s)
- Xiaona Chen
- School of Environment and Chemical Engineering, Shenyang University of Technology, 110870 Shenyang, P. R. China
| | - Yanheng Xu
- School of Environment and Chemical Engineering, Shenyang University of Technology, 110870 Shenyang, P. R. China
| | - Ge Xu
- School of Environment and Chemical Engineering, Shenyang University of Technology, 110870 Shenyang, P. R. China
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Li X, Wu Q, Hussain M, Chen L, Huang Q, Huang W, Tao T. Sodium alkoxide-mediated g-C 3N 4 immobilized on a composite nanofibrous membrane for preferable photocatalytic activity. RSC Adv 2022; 12:15378-15384. [PMID: 35693247 PMCID: PMC9121215 DOI: 10.1039/d2ra02441a] [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: 04/16/2022] [Accepted: 05/16/2022] [Indexed: 11/21/2022] Open
Abstract
Sodium alkoxide-mediated g-C3N4 is presented to fabricate flexible electrospun polyacrylonitrile nanofibers for the first time.
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Affiliation(s)
- Xue Li
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, P. R. China
- Jiangsu Collaborative Innovation Centre of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, P. R. China
| | - Qin Wu
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, P. R. China
- Jiangsu Collaborative Innovation Centre of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, P. R. China
| | - Mushraf Hussain
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, P. R. China
- Reading Academy, NUIST-UoR International Research Institute, Nanjing 210044, P. R. China
| | - Liang Chen
- Jiangsu Collaborative Innovation Centre of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, P. R. China
| | - Qiong Huang
- Jiangsu Collaborative Innovation Centre of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, P. R. China
| | - Wei Huang
- State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Tao Tao
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics, Nanjing University of Information Science and Technology (NUIST), Nanjing 210044, P. R. China
- Reading Academy, NUIST-UoR International Research Institute, Nanjing 210044, P. R. China
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33
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Yu X, Ng SF, Putri LK, Tan LL, Mohamed AR, Ong WJ. Point-Defect Engineering: Leveraging Imperfections in Graphitic Carbon Nitride (g-C 3 N 4 ) Photocatalysts toward Artificial Photosynthesis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2006851. [PMID: 33909946 DOI: 10.1002/smll.202006851] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Graphitic carbon nitride (g-C3 N4 ) is a kind of ideal metal-free photocatalysts for artificial photosynthesis. At present, pristine g-C3 N4 suffers from small specific surface area, poor light absorption at longer wavelengths, low charge migration rate, and a high recombination rate of photogenerated electron-hole pairs, which significantly limit its performance. Among a myriad of modification strategies, point-defect engineering, namely tunable vacancies and dopant introduction, is capable of harnessing the superb structural, textural, optical, and electronic properties of g-C3 N4 to acquire an ameliorated photocatalytic activity. In view of the burgeoning development in this pacey field, a timely review on the state-of-the-art advancement of point-defect engineering of g-C3 N4 is of vital significance to advance the solar energy conversion. Particularly, insights into the intriguing roles of point defects, the synthesis, characterizations, and the systematic control of point defects, as well as the versatile application of defective g-C3 N4 -based nanomaterials toward photocatalytic water splitting, carbon dioxide reduction and nitrogen fixation will be presented in detail. Lastly, this review will conclude with a balanced perspective on the technical and scientific hindrances and future prospects. Overall, it is envisioned that this review will open a new frontier to uncover novel functionalities of defective g-C3 N4 -based nanostructures in energy catalysis.
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Affiliation(s)
- Xinnan Yu
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
| | - Sue-Faye Ng
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
- Center of Excellence for NaNo Energy & Catalysis Technology (CONNECT), Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
| | - Lutfi Kurnianditia Putri
- Low Carbon Economy (LCE) Research Group, School of Chemical Engineering, Universiti Sains Malaysia, Nibong Tebal, Pulau, Pinang, 14300, Malaysia
| | - Lling-Lling Tan
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Selangor, Darul Ehsan, 47500, Malaysia
| | - Abdul Rahman Mohamed
- Low Carbon Economy (LCE) Research Group, School of Chemical Engineering, Universiti Sains Malaysia, Nibong Tebal, Pulau, Pinang, 14300, Malaysia
| | - Wee-Jun Ong
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
- Center of Excellence for NaNo Energy & Catalysis Technology (CONNECT), Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
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34
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Kang L, Han Z, Yu H, Wu Q, Yang H. Experimental and theoretical investigations on the enhanced photocatalytic performance of titanate nanosheets/sulfur-doped g-C3N4 heterojunction: Synergistic effects and mechanistic studies. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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35
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Xu Y, Wang X, Zhu L, An R, Qi Z, Wu H, Miao T, Li L, Fu X. Construction and performance of a simple and efficient g-C 3N 4 photocatalytic hydrogen production system. RSC Adv 2021; 11:36034-36041. [PMID: 35492762 PMCID: PMC9043151 DOI: 10.1039/d1ra06436c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 10/22/2021] [Indexed: 11/21/2022] Open
Abstract
Surface and bulk structure modification is an effective strategy to improve the photocatalytic performance of g-C3N4 (CN). In this work, dilute NaOH solution was used in situ to regulate the CN structure for enhanced photocatalytic hydrogen evolution reaction (HER). Characterization results indicate that after treatment with dilute NaOH solution, the surface of CN was hydroxylated, resulting in the change of CN structure and the increase of BET specific surface area. Furthermore, some Na+ ions can be intercalated into the framework of CN, and form the Na-N bond. These modifications boost the HER activity of CN. The test carried out in 7.5 mM NaOH solution shows the highest activity and it is almost 3.7 times higher than that performed in water. Control tests indicate that hydroxides of other alkali and alkali earth metals such as LiOH, KOH, Ca(OH)2, and Ba(OH)2 have similar promotion effects. This work demonstrates a valid and simple way to enhance the HER activity of CN through performing the reaction in a weakly alkaline solution.
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Affiliation(s)
- Yun Xu
- College of Chemistry and Material Science, Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University Huaibei Anhui 235000 China
| | - Xuewei Wang
- College of Chemistry and Material Science, Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University Huaibei Anhui 235000 China
| | - LingFeng Zhu
- College of Chemistry and Material Science, Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University Huaibei Anhui 235000 China
| | - Ran An
- College of Chemistry and Material Science, Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University Huaibei Anhui 235000 China
| | - Zhulin Qi
- College of Chemistry and Material Science, Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University Huaibei Anhui 235000 China
| | - Haisu Wu
- College of Chemistry and Material Science, Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University Huaibei Anhui 235000 China
| | - Tifang Miao
- College of Chemistry and Material Science, Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University Huaibei Anhui 235000 China
| | - Longfeng Li
- College of Chemistry and Material Science, Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University Huaibei Anhui 235000 China
| | - Xianliang Fu
- College of Chemistry and Material Science, Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University Huaibei Anhui 235000 China
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Lin Y, Li Y, Cao Y, Wang X. Two-dimensional MOFs: Design & Synthesis and Applications. Chem Asian J 2021; 16:3281-3298. [PMID: 34453404 DOI: 10.1002/asia.202100884] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 08/25/2021] [Indexed: 12/24/2022]
Abstract
For the past few years, two-dimensional materials have attracted widespread attention owing to their special properties and potential applications. It is well-known that graphene, transition metal disulfide compounds (TMDC), carbon nitride, transition metal carbonitrides (Mxenes), silene and hexagonal boron nitride are typical two-dimensional materials. Compared with these traditional two-dimensional materials, two-dimensional MOF is favored by numerous researchers because of its unique structure. Based on the unique metal ion and organic ligand coordination of MOF and two-dimensional layered structure, the applications of two-dimensional MOF were getting serious, including catalysis, supercapacitor, gas adsorption/separation, sensors and so on. This review presents a relatively comprehensive summary of the design & synthesis and applications of two-dimensional MOF over the past few years. Furthermore, the opportunities and challenges have been discussed to supply a promising prospect to this field.
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Affiliation(s)
- Yuting Lin
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225000, P. R. China
| | - Yuehua Li
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225000, P. R. China
| | - Yu Cao
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225000, P. R. China
| | - Xiaozhi Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225000, P. R. China
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37
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Li J, Bai X, Rao X, Zhang Y. Heterojunction of WO
3
Particle and g‐C
3
N
4
Nanowire for Enhanced Photocatalytic Hydrogen Evolution. ChemistrySelect 2021. [DOI: 10.1002/slct.202101955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jinlun Li
- School of Materials and Energy Southwest University Chongqing 400715 China
| | - Xin Bai
- School of Materials and Energy Southwest University Chongqing 400715 China
| | - Xi Rao
- School of Materials and Energy Southwest University Chongqing 400715 China
| | - Yongping Zhang
- School of Materials and Energy Southwest University Chongqing 400715 China
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38
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Nguyen-Dinh MT, Bui TS, Bansal P, Jourshabani M, Lee BK. Photocatalytic and photo-electrochemical behavior of novel SnO2-modified-g-C3N4 for complete elimination of tetracycline under visible-light irradiation: Slurry and fixed-bed approach. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118607] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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39
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Wang J, Wang Y, Li G, Xiong Y, Zhang M, Zhang S, Zhong Q. Sodium doped flaky carbon nitride with nitrogen defects for enhanced photoreduction carbon dioxide activity. J Colloid Interface Sci 2021; 603:210-219. [PMID: 34186399 DOI: 10.1016/j.jcis.2021.06.113] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 06/18/2021] [Accepted: 06/19/2021] [Indexed: 01/23/2023]
Abstract
Sodium doped flaky carbon nitride (g-C3N4) with nitrogen defects (bmw-DCN-x) were synthesized via two steps method to enhance photocatalytic reduction of carbon dioxide (CO2). After ball milling and calcination, dicyandiamide was evenly dispersed on the sodium chloride (NaCl) template to form a flaky structure. The NaCl not only provided part of sodium (Na) source for Na doped g-C3N4, but also introduced a large number of nitrogen (N) defects. Meanwhile, sodium hydroxide (NaOH) significantly enhanced Na doping. The bmw-DCN-30, a proportion of modified g-C3N4, showed heightened photo-reduction CO2 performance, with satisfactory carbon monoxide (CO) and methane (CH4) productivity at a rate of 30.6 μmol·g-1·h-1 and 5.4 μmol·g-1·h-1 respectively. This productivity was 15 and 11 times as much as that of bulky g-C3N4 (BCN). The related characterizations confirmed that N defects produced more reactive sites and enhanced the adsorption capacity of carbon nitride to CO2. The accompanying Na doping and flaky structure characteristics improved the optical absorption ability and the effective separation of photogenerated carriers. Accordingly, this work provides further insights into constructing modified materials based on carbon nitride for CO2 reduction.
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Affiliation(s)
- Jianbo Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Yanan Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Guojun Li
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Yongheng Xiong
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Mingjia Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Shule Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
| | - Qin Zhong
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
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40
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Promotion of the excited electron transfer over MoO3@Cu3P p-n heterojunction for photocatalytic hydrogen production under visible light irradiation. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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41
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Jin Q, Dai X, Song J, Pu K, Wu X, An J, Zhao T. High photocatalytic performance of g-C3N4/WS2 heterojunction from first principles. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111141] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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42
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Wang Z, Lin Z, Shen S, Zhong W, Cao S. Advances in designing heterojunction photocatalytic materials. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63698-1] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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43
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Hu S, Yu A, Lu R. A comparison study of sodium ion- and potassium ion-modified graphitic carbon nitride for photocatalytic hydrogen evolution. RSC Adv 2021; 11:15701-15709. [PMID: 35481164 PMCID: PMC9029307 DOI: 10.1039/d1ra01395e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/14/2021] [Indexed: 11/21/2022] Open
Abstract
It is well known that modifying graphitic carbon nitride (GCN) is an imperative strategy to improve its photocatalytic activity. In this study, Na-doped and K-doped graphitic carbon nitride (GCN-Na and GCN-K) were prepared via the simple thermal polymerization of a mixture of melamine and NaCl or KCl, respectively. The structure characterization showed that both Na+ and K+ intercalation could reduce the interlayer distance of GCN and introduce cyano defects in GCN, while K+ apparently had a stronger influence on the structure variation of GCN. The chemical composition data showed that both Na+ and K+ could easily interact with GCN, while K-doping caused a greater change in the C/N ratio than Na-doping. Moreover, compared to GCN-Na-5 (5 represents weight ratio of alkali halide to melamine), the conduction and valence bands of GCN-K-5 both shifted upward based on the electronic and optical measurements. Consequently, GCN-K-5 yielded an H2 evolution rate around 4 times higher than that of GCN-Na-5 under visible light irradiation (>420 nm). The cation size effect on GCN was proposed to be mainly responsible for the variation in the structure, optical and electronic properties of ion-doped GCNs, and hence the enhanced photocatalytic H2 evolution. The current work can provide new insight into optimizing photocatalysts for enhanced photocatalytic performances. The ion size effect on graphitic carbon nitride is responsible for variations in its structure, optical and electronic properties, and hence the enhancement in photocatalytic hydrogen evolution.![]()
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Affiliation(s)
- Siyu Hu
- Department of Chemistry, Renmin University of China Beijing 100872 P. R. China +86-10-6251-6444
| | - Anchi Yu
- Department of Chemistry, Renmin University of China Beijing 100872 P. R. China +86-10-6251-6444
| | - Rong Lu
- Department of Chemistry, Renmin University of China Beijing 100872 P. R. China +86-10-6251-6444
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44
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Liu X, Ma R, Zhuang L, Hu B, Chen J, Liu X, Wang X. Recent developments of doped g-C 3N 4 photocatalysts for the degradation of organic pollutants. CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY 2021; 51:751-790. [DOI: doi.org/10.1080/10643389.2020.1734433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
Affiliation(s)
- Xiaolu Liu
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, P. R. China
- School of Life Science, Shaoxing University, Shaoxing, P. R. China
| | - Ran Ma
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, P. R. China
| | - Li Zhuang
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, P. R. China
| | - Baowei Hu
- School of Life Science, Shaoxing University, Shaoxing, P. R. China
| | - Jianrong Chen
- College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, P. R. China
| | - Xiaoyan Liu
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, P. R. China
| | - Xiangke Wang
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, P. R. China
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, P. R. China
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45
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Wang X, He M, Nan Z. Effects of adsorption capacity and activity site on Fenton-like catalytic performance for Na and Fe co-doped g-C3N4. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117765] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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46
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He Y, Chen X, Huang C, Li L, Yang C, Yu Y. Encapsulation of Co single sites in covalent triazine frameworks for photocatalytic production of syngas. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63603-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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47
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In situ construction of protonated g-C3N4/Ti3C2 MXene Schottky heterojunctions for efficient photocatalytic hydrogen production. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63559-8] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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48
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Yang X, Cao C, Guo Z, Zhang X, Wang Y, Yang W. Promoting hydrogen evolution of a g-C 3N 4-based photocatalyst by indium and phosphorus co-doping. NEW J CHEM 2021. [DOI: 10.1039/d1nj00585e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
An indium and phosphorus co-doped g-C3N4 photocatalyst (In,P-g-C3N4) was prepared by K2HPO4 post-treatment of an indium-doped g-C3N4 photocatalyst (In-g-C3N4) derived from in situ copolymerization of dicyandiamide and indium chloride.
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Affiliation(s)
- Xiaohang Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Chi Cao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Zilong Guo
- Institute of Molecular Plus
- Tianjin University
- Tianjin 300072
- China
| | - Xiaoyu Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Yaxin Wang
- Institute of Molecular Plus
- Tianjin University
- Tianjin 300072
- China
| | - Wensheng Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
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49
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Yang Q, Hu S, Yao Y, Lin X, Du H, Yuan Y. Engineering graphitic carbon nitride with expanded interlayer distance for boosting photocatalytic hydrogen evolution. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63611-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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50
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Yang X, Guo Z, Zhang X, Han Y, Xue Z, Xie T, Yang W. The effect of indium doping on the hydrogen evolution performance of g-C 3N 4 based photocatalysts. NEW J CHEM 2021. [DOI: 10.1039/d0nj04854b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Doping graphite carbon nitride (g-C3N4) with indium ions in an unique quasi-interlayer fashion is effective to improve its visible light photocatalytic performance towards hydrogen evolution via water splitting.
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Affiliation(s)
- Xiaohang Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Zilong Guo
- Institute of Molecular Plus
- Tianjin University
- Tianjin 300072
- China
| | - Xiaoyu Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Yandong Han
- Institute of Molecular Plus
- Tianjin University
- Tianjin 300072
- China
| | - Zheng Xue
- Institute of Molecular Plus
- Tianjin University
- Tianjin 300072
- China
| | - Tengfeng Xie
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
| | - Wensheng Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
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