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Li H, Wu F, Guo P, Zhao S, Qian M, Yu C, Yang N, Cui M, Yang N, Wang J, Su Y, Tan G. Optimized Phase and Crystallinity of Cr 2(NCN) 3 Dominating Electrochemical Lithium Storage Performance. NANO LETTERS 2024; 24:8525-8534. [PMID: 38954769 DOI: 10.1021/acs.nanolett.4c01091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Cr2(NCN)3 is a potentially high-capacity and fast-charge Li-ion anode owing to its abundant and broad tunnels. However, high intrinsic chemical instability severely restricts its capacity output and electrochemical reversibility. Herein we report an effective crystalline engineering method for optimizing its phase and crystallinity. Systematic studies reveal the relevancy between electrochemical performance and crystalline structure; an optimal Cr2(NCN)3 with high phase purity and uniform crystallinity exhibits a high reversible capacity of 590 mAh g-1 and a stable cycling performance of 478 mAh g-1 after 500 cycles. In-operando heating XRD reveals its high thermodynamical stability over 600 °C, and in-operando electrochemical XRD proves its electrochemical Li storage mechanism, consisting of the primary Li-ion intercalation and subsequent conversion reactions. This study introduces a facile and low-cost method for fabricating high-purity Cr2(NCN)3, and it also confirms that the Li storage of Cr2(NCN)3 can be further improved by tuning its phase and crystallinity.
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Affiliation(s)
- Hanlou Li
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Feng Wu
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Penghui Guo
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Silong Zhao
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Mengmeng Qian
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Chuguang Yu
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Ningning Yang
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Mokai Cui
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Ni Yang
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Jing Wang
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Yuefeng Su
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
| | - Guoqiang Tan
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
- Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
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Yu H, Cao X, Zhang S, Luo S, Feng L, An X, Jiang H, Yao S. Nano-sized aggregate Ti 3C 2-TiO 2 supported on the surface of Ag 2NCN as a Z-scheme catalyst with enhanced visible light photocatalytic performance. Dalton Trans 2023; 52:14640-14648. [PMID: 37788010 DOI: 10.1039/d3dt02430j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Exposing the photocatalyst's highly active facets and hybridizing the photocatalyst with suitable cocatalysts in the proper spot have been recognized as strong methods for high-performance photocatalysts. Herein, Ag2NCN/TiO2-Ti3C2 composites were synthesized by applying simple calcination and physically weak interaction deposition processes to obtain an excellent photocatalyst for Rhodamine B (Rh B) degradation when exposed to visible light. The findings from the experiments reveal that the Ag2NCN/TiO2-Ti3C2400 composite exhibited an outstanding photocatalytic rate in 80 min, with the highest Rh B degradation rate (k = 0.03889 min-1), which was 16 times higher than that of pure Ag2NCN (k = 0.00235 min-1) and 2.2 times higher than that of TiO2-Ti3C2400 (k = 0.01761 min-1). The results from the following factors: (i) the powerful interfacial contact created by the in situ formation of TiO2, and the superior electrical conductivity of Ti3C2 that makes carrier separation possible; (ii) TiO2 with electron-rich (101) facets are deposited on the surface of Ag2NCN, significantly reducing charge carrier recombination by trapping photoelectrons; (iii) a Z-type heterojunction is constructed between nanosize aggregate Ti3C2-TiO2 and Ag2NCN with non-metal Ti3C2 as the solid medium, improving the transfer and separation of photogenerated charges and inhibiting the recombination of electrons and holes. Additionally, the redox ability of the composite photocatalyst is enhanced. Furthermore, the analyses of active species showed that photogenerated superoxide radicals and holes were the principal active agents inside the photodegradation of Rh B. Moreover, the composite exhibited outstanding photo-stability.
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Affiliation(s)
- Haidong Yu
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang 110142, China
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey, Langfang 065000, China
| | - Xuan Cao
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Shuji Zhang
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey, Langfang 065000, China
| | - Shanxia Luo
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey, Langfang 065000, China
| | - Liang Feng
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey, Langfang 065000, China
| | - Xiaoyu An
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey, Langfang 065000, China
| | - Haibing Jiang
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey, Langfang 065000, China
| | - Shuhua Yao
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang 110142, China
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Yu H, Jiang H, Cao X, Yao S. Ag 2NCN anchored on Ti 3C 2T x MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation. RSC Adv 2023; 13:16602-16609. [PMID: 37305443 PMCID: PMC10251192 DOI: 10.1039/d3ra01776a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 05/19/2023] [Indexed: 06/13/2023] Open
Abstract
The quick charge recombination of light-generated electrons and holes severely restricts the photocatalytic applications of single semiconductors. Here, a straightforward electrostatically driven self-assembly technique was used to construct an Ag2NCN/Ti3C2Tx Schottky heterojunction, which was then used to degrade Rhodamine B (RhB) in the illumination of visible light. The findings from the experiments revealed that as a cocatalyst, Ti3C2Tx significantly suppresses the recombination rate and broadens visible absorptivity to improve Ag2NCN photocatalytic efficiency. The optimized Ag2NCN/Ti3C2Tx (AT2) composite exhibited an outstanding photocatalytic rate in 96 min, with the highest RhB degradation rate (k = 0.029 min-1), which was around fifteen times that of pure Ag2NCN (k = 0.002 min-1). Furthermore, the trapping-agent experiment showed photogenerated superoxide radicals and holes were the principal active agents inside the photodegradation of RhB. Compared with Ag-based semiconductors, the composite exhibited outstanding photostability, highlighting its excellent potential for application in visible-light photocatalysis.
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Affiliation(s)
- Haidong Yu
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology Shenyang 110142 China
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey Langfang 065000 China
| | - Haibing Jiang
- Langfang Natural Resources Comprehensive Survey Center, China Geological Survey Langfang 065000 China
| | - Xuan Cao
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology Shenyang 110142 China
| | - Shuhua Yao
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology Shenyang 110142 China
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Fu Z, Wang Y, Li Z, Song T, Long B, Ali A, Deng GJ. Controllable synthesis of porous silver cyanamide nanocrystals with tunable morphologies for selective photocatalytic CO2 reduction into CH4. J Colloid Interface Sci 2021; 593:152-161. [DOI: 10.1016/j.jcis.2021.02.087] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 12/16/2022]
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Ge L, Yue Y, Wang W, Tan F, Zhang S, Wang X, Qiao X, Wong PK. Efficient degradation of tetracycline in wide pH range using MgNCN/MgO nanocomposites as novel H 2O 2 activator. WATER RESEARCH 2021; 198:117149. [PMID: 33930792 DOI: 10.1016/j.watres.2021.117149] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 03/20/2021] [Accepted: 04/10/2021] [Indexed: 06/12/2023]
Abstract
Currently existing Fenton-like catalysts were limited in wastewater treatment owing to their potential transition-metal poisoning, narrow applicable pH range and high dependence on external energy excitation. In this work, the MgNCN/MgO nanocomposites were firstly synthesized by a facile one-pot calcination of melamine and basic magnesium carbonate, and used as novel H2O2 activator for antibiotic removal. It was found that the MgNCN/MgO composite calcined at 550°C with the mass ratio of melamine to basic magnesium carbonate at 2:1, exhibited an excellent catalytic ability to tetracycline (TC) degradation in a wide pH range of 4-10 without any external energy input. More than 90% of TC (100 mL, 50 mg/L) could be degraded within 30 min by 10 mg of the nanocomposite in the presence of 0.2 mL of 30 wt% H2O2. Based on the experimental results, it was concluded that the Mg-N coordination between MgNCN and MgO in MgNCN/MgO nanocomposites activated H2O2 to produce primary singlet oxygen (1O2) and minor hydroxyl radicals (·OH), responding for TC degradation. In addition, the degradation pathways of TC were deduced by determining the generated intermediates during the degradation process. This work provided a novel idea for designing transition-metal-free catalysts for nonradical activation of H2O2 in the absence of external energy excitation.
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Affiliation(s)
- Lifa Ge
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Yamei Yue
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Wei Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
| | - Fatang Tan
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Shenghua Zhang
- College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, Hubei, China
| | - Xinyun Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Xueliang Qiao
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Po Keung Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
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6
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Li Y, Cao C, Zhang Q, Lu Y, Zhao Y, Li Q, Li X, Huang T. Nanorod bundle-like silver cyanamide nanocrystals for the high-efficiency photocatalytic degradation of tetracycline. RSC Adv 2021; 11:10235-10242. [PMID: 35423481 PMCID: PMC8695649 DOI: 10.1039/d1ra00770j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 02/22/2021] [Indexed: 12/15/2022] Open
Abstract
Silver cyanamide (Ag2NCN) is a type of functional semiconductor material with a visible-light response. Ag2NCN nanocrystals with nanorod bundle-like (RB) or straw bundle-like (SB) assemblies were successfully prepared, and it was found that the as-prepared Ag2NCN nanorod bundle (RB) samples had a narrower bandgap of 2.16 eV, which was lower than those reported. As a result, RB samples demonstrated a higher photocatalytic activity towards tetracycline (TC) degradation. The analyses of active species confirmed that both the photo-generated holes and ˙O2 - radicals of the RB sample played significant roles during the process of photocatalytic degradation of TC, and the holes were the main active species. These results indicated that effective charge separation could be achieved by adjusting the morphologies of Ag2NCN nanocrystals. This study provides a new approach to prepare Ag2NCN nanocrystals with a narrower bandgap and strong visible-light response towards antibiotic degradation.
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Affiliation(s)
- Yulin Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities Wuhan 430074 China
| | - Chencong Cao
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities Wuhan 430074 China
| | - Qing Zhang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities Wuhan 430074 China
| | - Ying Lu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities Wuhan 430074 China
| | - Yanxi Zhao
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities Wuhan 430074 China
| | - Qin Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities Wuhan 430074 China
| | - Xianghong Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities Wuhan 430074 China
| | - Tao Huang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities Wuhan 430074 China
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7
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Song H, Wang N, Shi X, Meng H, Han Y, Wu J, Xu J, Xu Y, Sun T, Zhang X. Photocatalytic active silver organic framework: Ag(I)‐MOF and its hybrids with silver cyanamide. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5972] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Huihui Song
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
| | - Na Wang
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
| | - Xiatong Shi
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
| | - Hao Meng
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
| | - Yide Han
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
| | - Junbiao Wu
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
| | - Junli Xu
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
| | - Yan Xu
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
| | - Ting Sun
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
| | - Xia Zhang
- Faculty of Chemistry, College of Sciences Northeastern University Shenyang 110819 China
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Jia B, Sun D, Zhao W, Xu F, Huang F. Controllable Conversion of CdNCN Nanoparticles into Various Chalcogenide Nanostructures for Photo-driven Applications. Chemistry 2020; 26:7955-7960. [PMID: 32301529 DOI: 10.1002/chem.202000790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/10/2020] [Indexed: 12/30/2022]
Abstract
Semiconductor nanocrystals of tunable shell/core configurations have great potential in photo-driven applications such as photoluminescence and photocatalysis, but few strategies realize a controllable synthesis with respect to both the size of the core and the shell with high crystallinity. Here, a new synthetic method based on cadmium cyanamide (CdNCN) nanoparticle anion exchange reactions was developed to access solid or hollow CdSe nanocrystals with tunable size and CdNCN@CdS heterostructures with modulated shell/core thickness. The gradual shift and narrow width of photoluminescence features demonstrate the high crystallinity and monodispersity of the resulting CdSe nanocrystals. In the CdNCN@CdS heterostructures, synergistic effects of the photocarrier separation is observed between the CdS shell and CdNCN core, which leads to great improvement in photocatalysis with optimized shell/core ratio.
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Affiliation(s)
- Bingquan Jia
- State Key Laboratory of High Performance Ceramics, and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Du Sun
- State Key Laboratory of High Performance Ceramics, and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
| | - Wei Zhao
- State Key Laboratory of High Performance Ceramics, and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Fangfang Xu
- State Key Laboratory of High Performance Ceramics, and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Fuqiang Huang
- State Key Laboratory of High Performance Ceramics, and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P.R. China.,National Laboratory for Molecular Sciences and, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P.R. China
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Li S, Luo P, Wu H, Wei C, Hu Y, Qiu G. Strategies for Improving the Performance and Application of MOFs Photocatalysts. ChemCatChem 2019. [DOI: 10.1002/cctc.201900199] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Shixiong Li
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- School of Chemical Engineering and Resource RecyclingWuzhou University Wuzhou 543002 P. R. China
| | - Pei Luo
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
| | - Haizhen Wu
- School of Biology and Biological EngineeringSouth China University of Technology Guangzhou 510006 P. R. China
| | - Chaohai Wei
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of Technology Guangzhou 510006 P. R. China
| | - Yun Hu
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of Technology Guangzhou 510006 P. R. China
| | - Guanglei Qiu
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of Technology Guangzhou 510006 P. R. China
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Pirzada B, Pushpendra, Kunchala RK, Naidu BS. Synthesis of LaFeO 3/Ag 2CO 3 Nanocomposites for Photocatalytic Degradation of Rhodamine B and p-Chlorophenol under Natural Sunlight. ACS OMEGA 2019; 4:2618-2629. [PMID: 31459497 PMCID: PMC6649104 DOI: 10.1021/acsomega.8b02829] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 12/17/2018] [Indexed: 05/19/2023]
Abstract
Novel LaFeO3/Ag2CO3 nanocomposites are synthesized by co-precipitation method for photocatalytic degradation of Rhodamine B (RhB) and p-chlorophenol under visible light irradiation. Heterostructures between LaFeO3 and Ag2CO3 semiconductors are formed during the synthesis of these nanocomposites. Among the nanocomposites prepared with different ratios of LaFeO3 and Ag2CO3, 1% LaFeO3/Ag2CO3 shows the highest photocatalytic activity for the degradation of RhB. Maximum electron-hole pair decoupling efficiency is observed in 1% LaFeO3/Ag2CO3, which causes the greater activity of the heterostructure. Degradation efficiency of 99.5% for RhB and 59% for p-chlorophenol has been obtained under natural sunlight within 45 min. Interestingly, the stability of Ag2CO3 is improved dramatically after making nanocomposite, and no decomposition of the catalyst was observed even after several photocatalytic cycles. Reactive oxygen species scavenging experiments with p-benzoquinone, isopropyl alcohol, and ammonium oxalate suggest that a major degradation process is caused by holes. Degradation of RhB into small organic moieties is detected using LC-MS technique. Further, the efficient mineralization of the degradation products occurs during the catalytic process.
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Affiliation(s)
- Bilal
M. Pirzada
- Energy and Environment Group, Institute of Nano Science and Technology (INST), Phase-10, Sector-64, Mohali 160062, Punjab, India
| | - Pushpendra
- Energy and Environment Group, Institute of Nano Science and Technology (INST), Phase-10, Sector-64, Mohali 160062, Punjab, India
| | - Ravi K. Kunchala
- Energy and Environment Group, Institute of Nano Science and Technology (INST), Phase-10, Sector-64, Mohali 160062, Punjab, India
| | - Boddu S. Naidu
- Energy and Environment Group, Institute of Nano Science and Technology (INST), Phase-10, Sector-64, Mohali 160062, Punjab, India
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Bai C, Bi J, Wu J, Han Y, Zhang X. Enhanced photocatalytic hydrogen evolution over a heterojunction composed of silver cyanamide and graphitic carbon nitride. NEW J CHEM 2018. [DOI: 10.1039/c8nj02991a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A semiconductor heterojunction composed of silver cyanamide (Ag2NCN) and graphitic carbon nitride (g-C3N4) exhibited excellent photocatalytic activity for hydrogen evolution under simulated sunlight irradiation.
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Affiliation(s)
- Chunpeng Bai
- Department of Chemistry
- College of Science
- Northeastern University
- Shenyang
- P. R. China
| | - Jingce Bi
- Department of Chemistry
- College of Science
- Northeastern University
- Shenyang
- P. R. China
| | - Junbiao Wu
- Department of Chemistry
- College of Science
- Northeastern University
- Shenyang
- P. R. China
| | - Yide Han
- Department of Chemistry
- College of Science
- Northeastern University
- Shenyang
- P. R. China
| | - Xia Zhang
- Department of Chemistry
- College of Science
- Northeastern University
- Shenyang
- P. R. China
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