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Liu T, Zhu W, Wang N, Zhang K, Wen X, Xing Y, Li Y. Preparation of Structure Vacancy Defect Modified Diatomic-Layered g-C 3 N 4 Nanosheet with Enhanced Photocatalytic Performance. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302503. [PMID: 37344350 PMCID: PMC10460902 DOI: 10.1002/advs.202302503] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/29/2023] [Indexed: 06/23/2023]
Abstract
Structure self-modification of graphitic carbon nitride (g-C3 N4 ) without the assistance of other species has attracted considerable attention. In this study, the structure vacancy defect modified diatomic-layered g-C3 N4 nanosheet (VCN) is synthesized by thermal treatment of bulk g-C3 N4 in a quartz tube with vacuum atmosphere that will generate a pressure-thermal dual driving force to boost the exfoliation and formation of structure vacancy for g-C3 N4 . The as-prepared VCN possesses a large specific surface area with a rich pore structure to provide more active centers for catalytic reactions. Furthermore, the as-formed special defect level in VCN sample can generate a higher exciton density at photoexcitation stage. Meanwhile, the photogenerated charges will rapidly transfer to VCN surface due to the greatly shortened transfer path resulting from the ultrathin structure (≈1.5 nm), which corresponds to two graphite carbon nitride atomic layers. In addition, the defect level alleviates the drawback of enlarged bandgap caused by the quantum size effect of nano-scaled g-C3 N4 , resulting in a well visible-light utilization. As a result, the VCN sample exhibits an excellent photocatalytic performance both in hydrogen production and photodegradation of typical antibiotics.
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Affiliation(s)
- Tian Liu
- College of Environmental and Chemical EngineeringXi'an Key Laboratory of Textile Chemical Engineering AuxiliariesXi'an Polytechnic UniversityXi'an710048P. R. China
| | - Wei Zhu
- College of Environmental and Chemical EngineeringXi'an Key Laboratory of Textile Chemical Engineering AuxiliariesXi'an Polytechnic UniversityXi'an710048P. R. China
| | - Ning Wang
- College of Environmental and Chemical EngineeringXi'an Key Laboratory of Textile Chemical Engineering AuxiliariesXi'an Polytechnic UniversityXi'an710048P. R. China
| | - Keyu Zhang
- College of Environmental and Chemical EngineeringXi'an Key Laboratory of Textile Chemical Engineering AuxiliariesXi'an Polytechnic UniversityXi'an710048P. R. China
| | - Xue Wen
- School of ChemistryXi'an Jiaotong UniversityXi'an710049P. R. China
| | - Yan Xing
- Jilin Provincial Key Laboratory of Advanced Energy MaterialsDepartment of ChemistryNortheast Normal UniversityChangchun130024P. R. China
| | - Yunfeng Li
- College of Environmental and Chemical EngineeringXi'an Key Laboratory of Textile Chemical Engineering AuxiliariesXi'an Polytechnic UniversityXi'an710048P. R. China
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Liu Y, Tayyab M, Pei W, Zhou L, Lei J, Wang L, Liu Y, Zhang J. The Precision Defect Engineering with Nonmetallic Element Refilling Strategy in g-C 3 N 4 for Enhanced Photocatalytic Hydrogen Production. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2208117. [PMID: 36840675 DOI: 10.1002/smll.202208117] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/27/2023] [Indexed: 05/25/2023]
Abstract
Traditional defect engineering and doping strategies are considered effective means for improving H2 evolution, but the uncontrollability of the modification process does not always lead to efficient activity. A defect-induced heteroatom refilling strategy is used here to synthesize heteroatoms introduced carbon nitride by precisely controlling the "introduction" sites on efficient N1 sites. Density functional theory calculations show that the refilling of B, P, and S sites have stronger H2 O adsorption and dissociation capacity than traditional doping, which makes it an optimal H2 production path. The large internal electric field strength of heteroatom-refilled catalysts leads to fast electron transfer and the hydrogen production of the best sample is up to 20.9 mmol g-1 h-1 . This work provides a reliable and clear insight into controlled defect engineering of photocatalysts and a universal modification strategy for typical heteroatom and co-catalyst systems for H2 production.
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Affiliation(s)
- Yujie Liu
- Key Laboratory for Advanced Materials, Shanghai Engineering Research Center for Multi media Environmental Catalysis and Resource Utilization, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Muhammad Tayyab
- Key Laboratory for Advanced Materials, Shanghai Engineering Research Center for Multi media Environmental Catalysis and Resource Utilization, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Wenkai Pei
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science & Technology, Shanghai, 200237, P. R. China
- Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092, P. R. China
| | - Liang Zhou
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science & Technology, Shanghai, 200237, P. R. China
- Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092, P. R. China
| | - Juying Lei
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science & Technology, Shanghai, 200237, P. R. China
- Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092, P. R. China
| | - Lingzhi Wang
- Key Laboratory for Advanced Materials, Shanghai Engineering Research Center for Multi media Environmental Catalysis and Resource Utilization, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, P. R. China
| | - Yongdi Liu
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science & Technology, Shanghai, 200237, P. R. China
- Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092, P. R. China
| | - Jinlong Zhang
- Key Laboratory for Advanced Materials, Shanghai Engineering Research Center for Multi media Environmental Catalysis and Resource Utilization, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, P. R. China
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Gupta A, Bhoyar T, Abraham BM, Kim DJ, Pasupuleti KS, Umare SS, Vidyasagar D, Gedanken A. Potassium Molten Salt-Mediated In Situ Structural Reconstruction of a Carbon Nitride Photocatalyst. ACS APPLIED MATERIALS & INTERFACES 2023; 15:18898-18906. [PMID: 37018662 DOI: 10.1021/acsami.3c00239] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Metal-free polymeric carbon nitride (PCN) materials are at the forefront of photocatalytic applications. Nevertheless, the overall functionality and performance of bulk PCN are limited by rapid charge recombination, high chemical inertness, and inadequate surface-active sites. To address these, here, we employed potassium molten salts (K+X-, where X- is Cl-, Br-, and I-) as a template for the in situ generation of surface reactive sites in thermal pyrolyzed PCN. Theoretical calculations imply that addition of KX salts to PCN-forming monomers causes halogen ions to be doped into C or N sites of PCN with a relative trend of halogen ion doping being Cl < Br < I. The experimental results show that reconstructing C and N sites in PCN develops newer reactive sites that are beneficial for surface catalysis. Interestingly, the photocatalytic H2O2 generation rate of KBr-modified PCN was 199.0 μmol h-1, about three times that of bulk PCN. Owing to the simple and straightforward approach, we expect molten salt-assisted synthesis to have wide exploration in modifying PCN photocatalytic activity.
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Affiliation(s)
- Akanksha Gupta
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Toshali Bhoyar
- Materials and Catalysis Laboratory, Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, 440010 Maharashtra, India
| | - B Moses Abraham
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Dong Jin Kim
- School of Energy Engineering, Kyungpook National University, Buk-gu, Daegu 41566, Republic of Korea
| | | | - Suresh S Umare
- Materials and Catalysis Laboratory, Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, 440010 Maharashtra, India
| | - Devthade Vidyasagar
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Aharon Gedanken
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
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Hu L, Ding Z, Yan F, Li K, Feng L, Wang H. Construction of Hexagonal Prism-like Defective BiOCL Hierarchitecture for Photocatalytic Degradation of Tetracycline Hydrochloride. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2700. [PMID: 35957131 PMCID: PMC9370337 DOI: 10.3390/nano12152700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/01/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Oxygen vacancy manipulation and hierarchical morphology construction in oxygen-containing semiconductors have been demonstrated to be effective strategies for developing high efficiency photocatalysts. In most studies of bismuth-based photocatalysts, hierarchical morphology and crystal defects are achieved separately, so the catalysts are not able to benefit from both features. Herein, using boiling ethylene glycol as the treatment solution, we developed an etching-recrystallization method for the fabrication of 3D hierarchical defective BiOCl at ambient pressure. The target hierarchical 3D-BiOCl is composed of self-assembled BiOCl nanosheets, which exhibit a hexagonal prism-like morphology on a micron scale, while simultaneously containing numerous oxygen vacancies within the crystal structure. Consequently, the target catalyst was endowed with a higher specific surface area, greater light harvesting capability, as well as more efficient separation and transfer of photo-excited charges than pristine BiOCl. As a result, 3D-BiOCl presented an impressive photocatalytic activity for the degradation of tetracycline hydrochloride in both visible light and natural white light emitting diode (LED) irradiation. Moreover, an extraordinary recycling property was demonstrated for the target photocatalyst thanks to its hierarchical structure. This study outlines a simple and energy-efficient approach for producing high-performance hierarchically defective BiOCl, which may also open up new possibilities for the morphological and crystal structural defect regulation of other Bi-based photocatalysts.
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Affiliation(s)
- Lijun Hu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Zhichao Ding
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Fei Yan
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Kuan Li
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Li Feng
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Hongqing Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
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Chen Z, Zhuang J, Liu C, Chai M, Zhang S, Teng K, Cao T, Zhang Y, Hu Y, Zhao L, An Q. Effective H2O2 production via favorable intermediate desorption in fluctuating electrical fields from matrix‐filler mutually enhanced P‐C3N4/PVDF‐HFP porous composite. ChemElectroChem 2022. [DOI: 10.1002/celc.202200124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zhensheng Chen
- China University of Geosciences Beijing School of materials science and engineering CHINA
| | - Jialin Zhuang
- China University of Geosciences Beijing school of materials science andengineering CHINA
| | - Chao Liu
- China University of Geosciences Beijing school of materials science and engineering CHINA
| | - Mengnan Chai
- China University of Geosciences Beijing school of materials science and engineering CHINA
| | - Shuting Zhang
- China University of Geosciences Beijing school of materials science and engineering CHINA
| | - Kaixuan Teng
- China University of Geosciences Beijing school of materials science and engineering CHINA
| | - Tingting Cao
- China University of Geosciences Beijing school of materials science and engineering CHINA
| | - Yihe Zhang
- China University of Geosciences Beijing school of materials science and engineering CHINA
| | - Yingmo Hu
- China University of Geosciences Beijing school of materials science and engineering CHINA
| | - Lu Zhao
- China University of Geosciences Beijing school of materials science and engineering CHINA
| | - Qi An
- China University of Geosciences Beijing School of materials sciences and engineering 29th Xueyuan Road 100083 Beijing CHINA
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He Q, Kang J, Zhu J, Huang S, Lu C, Liang H, Su Y, Zhuang X. N-confused porphyrin-based conjugated microporous polymers. Chem Commun (Camb) 2022; 58:2339-2342. [PMID: 35080212 DOI: 10.1039/d1cc06572f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal porphyrins, which possess metal-N coordination centers, are important building blocks for the construction of porous organic materials with catalytic performance. However, most of the previous work has focused on controlling the metal elements instead of the metal-N coordinations. Here, Pt(II) N-confused porphyrin and Pt(II) porphyrin based conjugated microporous polymers were synthesized by Yamamoto coupling reaction. The structural and property differences of Pt-N3C and Pt-N4 were studied. Calculations demonstrate that the Pt-N3C-based porous polymer exhibits broader photoabsorption and narrower bandgap than conventional Pt-N4-based porous polymers.
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Affiliation(s)
- Qichuan He
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.,The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jialing Kang
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jinhui Zhu
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Senhe Huang
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China.,College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Chenbao Lu
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Haiwei Liang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, University of Science and Technology of China, Hefei, China
| | - Yuezeng Su
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaodong Zhuang
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
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Ye S, Su C, He L, Li M, Yan Z, Wu J, Shen H, Cao X. Facile synthesis of mesoporous polymeric carbon nitride nanosheets anchored by Pt with ultralow loading for high-efficiency photocatalytic H 2 evolution. Dalton Trans 2021; 51:241-249. [PMID: 34881763 DOI: 10.1039/d1dt03554a] [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 facile fabrication of low-cost photocatalysts with enhanced activity and high atomic utilization is becoming increasingly necessary for solar energy usage and/or conversion. In this work, a series of mesoporous carbon nitride nanosheets with an enlarged specific surface area was synthesized via an inorganic acid-assisted exfoliation method without any soft or hard templates. An ultralow loading of downsized noble metal Pt was anchored on these porous nanosheets, exhibiting enhanced photocatalytic activity. The formation of mesoporous nanosheets in carbon nitride was expected to boost the mass transfer and shorten the charge carrier transfer route during the photocatalytic reaction. The characterization of samples revealed that the enhanced conductivity and photocurrent of the carbon nitride nanosheets also contributed to the enhanced H2 evolution activity. The maximum H2 production rates of 172.92 μmol h-1 and 321 μmol h-1 were achieved over the nanosheets derived from melamine and urea under visible light irradiation, which are 10.92- and 2.22-fold that of the corresponding bulk carbon nitride, respectively. This exfoliation method was demonstrated to be an efficient and universal method for the preparation of carbon nitride nanosheets with a mesoporous structure and high atom utilization of the co-catalyst for H2 evolution from water.
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Affiliation(s)
- Siyuan Ye
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, PR China.
| | - Changsheng Su
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA
| | - Lili He
- Graduate School of St. Paul University Philippines, Philippines
| | - Mengli Li
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, PR China.
| | - Zheng Yan
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, PR China.
| | - Jun Wu
- Jiaxing Nanhu University, Jiaxing, Zhejiang 314001, PR China
| | - Hongxia Shen
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, PR China.
| | - Xuebo Cao
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, PR China.
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