201
|
Shah JH, Fiaz M, Athar M, Ali J, Rubab M, Mehmood R, Jamil SUU, Djellabi R. Facile synthesis of N/B-double-doped Mn 2O 3 and WO 3 nanoparticles for dye degradation under visible light. ENVIRONMENTAL TECHNOLOGY 2020; 41:2372-2381. [PMID: 30623749 DOI: 10.1080/09593330.2019.1567604] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 12/22/2018] [Indexed: 06/09/2023]
Abstract
In the present work, nitrogen-doped and nitrogen-boron-double-doped manganese oxide (Mn2O3) and tungsten oxide (WO3) nanoparticles were synthesized using precipitation-hydrothermal method for methylene blue degradation under visible light. Materials were characterized using X-ray diffraction (XRD) analysis, Scanning electron microscopy, Energy dispersive X-ray spectroscopy and UV-vis spectroscopy. Results showed that N and B were successfully incorporated into the crystal lattices of Mn2O3 and WO3. XRD showed that WO3 was crystallized in the form of a monoclinic lattice, while cubic Mn2O3 was produced in the cubic form. The crystallite size was found to be decreased due to the substitution of N and B elements which reveals their roles to accelerate the crystal nucleation rate resulting in the decreased size. On the other hand, single and double doping has successfully narrowed the band gaps of the as-synthesised metal oxide photocatalysts resulting in better absorption in the visible light. Band gaps obtained were as follows: 3.02, 2.50, 1.73 and 1.77 eV for N-WO3 N/B-WO3, N-Mn2O3 and N/B-Mn2O3 respectively. Photocatalytic experiments showed that all as-synthesised materials exhibited a photocatalytic efficiency under visible light ≥420 nm. The degradation efficiency of methylene blue (MB) was in the following order: N-B-co-doped metal oxides > N-doped metal oxides > metal oxides. The presence of scavenger molecules such as isopropanol, EDTA-2Na and benzoquinone inhibited MB degradation. Finally, the results showed that these materials can be reused several times without a notable decrease in efficiency.
Collapse
Affiliation(s)
- Jafar Hussain Shah
- Institute of Chemical Sciences, Bahaudin Zakariya University, Multan, Pakistan
- Bahaudin Zakariya University, Multan, Pakistan
| | - Mohammad Fiaz
- Institute of Chemical Sciences, Bahaudin Zakariya University, Multan, Pakistan
- Bahaudin Zakariya University, Multan, Pakistan
| | - Muhammad Athar
- Institute of Chemical Sciences, Bahaudin Zakariya University, Multan, Pakistan
- Bahaudin Zakariya University, Multan, Pakistan
| | - Jafar Ali
- Laboratory of Environmental Nanomaterials, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China
- Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | | | - Rashid Mehmood
- Institute of Chemical Sciences, Bahaudin Zakariya University, Multan, Pakistan
- Bahaudin Zakariya University, Multan, Pakistan
| | | | - Ridha Djellabi
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People's Republic of China
| |
Collapse
|
202
|
Yu HY, Li HJ, Ma YY, Feng YX, Qian DJ. Interfacial self-assembly of carbon nitride-based nanocomposites with zinc terpyridyl coordination polymers for photocurrent generation and the photocatalytic degradation of organic dyes. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124702] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
203
|
Baral B, Parida K. {040/110} Facet Isotype Heterojunctions with Monoclinic Scheelite BiVO4. Inorg Chem 2020; 59:10328-10342. [DOI: 10.1021/acs.inorgchem.0c01465] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Basudev Baral
- Centre for Nano Science and Nano Technology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar 751030, India
| | - Kulamani Parida
- Centre for Nano Science and Nano Technology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar 751030, India
| |
Collapse
|
204
|
Synthesis and Characterization of Efficient ZnO/g-C3N4 Nanocomposites Photocatalyst for Photocatalytic Degradation of Methylene Blue. COATINGS 2020. [DOI: 10.3390/coatings10050500] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We examine the photocatalytic activity (PCA) of ZnO/graphitic carbon nitride g-C3N4 (g-CN) composite material for methylene blue (MB) degradation under visible-light irradiation (VLI). The polymeric g-CN materials were fabricated by the pyrolysis of urea and thiourea. More importantly, ZnO/g-CN nanostructured composites were fabricated by adding the different mounts (60, 65, 70, and 75 wt.%) of g-CN into ZnO via the simple hydrothermal process. Among fabricated composites, the 75% ZnO/g-CN nanocomposites displayed a superior PCA for MB degradation, which were ~three-fold an enhancement over the pure ZnO nanoparticles. The fabricated materials have been evaluated by X-ray diffraction (XRD), UV-Vis, Fourier transform infrared (FT-IR) spectroscopy, and electron microscopy. More importantly, the photodegradation of MB could get 98% in ZnO/g-CN could be credited to efficient separation of photo-induced charge carriers between ZnO and g-CN. Also, the recycling efficiency of the as-prepared composites was studied for multiple cycles, which shows that the photocatalysts are stable and suitable to carry out photocatalytic degradation in the logistic mode. Additionally, the probable photocatalytic mechanism has also discussed. The synthetic procedure of ZnO/g-CN based materials can be used in numerous fields such as environmental and in energy storage applications.
Collapse
|
205
|
One-pot synthesis of isotype heterojunction g-C3N4-MU photocatalyst for effective tetracycline hydrochloride antibiotic and reactive orange 16 dye removal. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.02.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
206
|
Le Z, Xiong C, Gong J, Wu X, Pan T, Chen Z, Xie Z. Self-cleaning isotype g-C 3N 4 heterojunction for efficient photocatalytic reduction of hexavalent uranium under visible light. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:114070. [PMID: 32014752 DOI: 10.1016/j.envpol.2020.114070] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 01/19/2020] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
Photocatalysis is a promising method to eliminate hexavalent uranium (U(Ⅵ)) and recycle it from wastewater. However, most of researched photocatalysts are metal-contained, inactive in visible light, and inconvenient to recycle, which unfortunately impedes the further utilization of photocatalytic technology in U(Ⅵ) pollution treatment. Herein, g-C3N4 isotype heterojunction with interpenetrated tri-s-triazine structure (ipCN) was prepared by inserting urea into the interlayer of tri-s-triazine planes of thiourea-derived g-C3N4 and in-site thermal treating. The synthesized nanocomposites were used to convert soluble U(Ⅵ) ions into U(Ⅳ) sediment under visible light. Experimental and characterization results reveal that ipCN possess larger BET surface area, more negative-charged surface, higher U(Ⅵ) adsorption capability, and more efficient mass diffusion and charges transfer properties. With these excellent characteristics, nearly 98% U(Ⅵ) could be removed within 20 min over ipCN5:1 and 92% photoreduction efficiency could also be kept after 7 cycle uses, which were equal to or even superior than most reported metal-based photocatalysts. It is also proven that the configuration of U(Ⅵ) and photogenerated ·O2- play a significant role in the photocatalytic U(Ⅵ) reduction process, with (UO2)x(OH)y2x-y are more prone to be adsorbed and the photoinduced process of ·O2- will steal electrons from photocatalysts. Furthermore, with the self-generated ·O2- and H2O2, a green and facile regeneration process of photocatalysts was proposed This work provides a promising scheme to extract U(Ⅵ) from the perspectives of photocatalysts exploitation, photocatalytic reduction, and photocatalysts regeneration, which is meaningful for the sustainable U(Ⅵ) resource recovery and U(Ⅵ) pollution purification.
Collapse
Affiliation(s)
- Zhanggao Le
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, No. 418, Guanglan Avenue, Nanchang 330013, PR China; School of Nuclear Science and Engineering, East China University of Technology, No. 418, Guanglan Avenue, Nanchang 330013, PR China
| | - Chuanbao Xiong
- Anhui Nuclear Exploration Technology Central Institute, No. 8, Zhanghe Road, Wuhu 241000, PR China; School of Nuclear Science and Engineering, East China University of Technology, No. 418, Guanglan Avenue, Nanchang 330013, PR China
| | - Junyuan Gong
- School of Nuclear Science and Engineering, East China University of Technology, No. 418, Guanglan Avenue, Nanchang 330013, PR China
| | - Xi Wu
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, No. 418, Guanglan Avenue, Nanchang 330013, PR China
| | - Tao Pan
- School of Nuclear Science and Engineering, East China University of Technology, No. 418, Guanglan Avenue, Nanchang 330013, PR China
| | - Zhongsheng Chen
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, No. 418, Guanglan Avenue, Nanchang 330013, PR China
| | - Zongbo Xie
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, No. 418, Guanglan Avenue, Nanchang 330013, PR China.
| |
Collapse
|
207
|
Vesali-Kermani E, Habibi-Yangjeh A, Ghosh S. Visible-light-induced nitrogen photofixation ability of g-C3N4 nanosheets decorated with MgO nanoparticles. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.12.033] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
208
|
Lv H, Huang Y, Koodali RT, Liu G, Zeng Y, Meng Q, Yuan M. Synthesis of Sulfur-Doped 2D Graphitic Carbon Nitride Nanosheets for Efficient Photocatalytic Degradation of Phenol and Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2020; 12:12656-12667. [PMID: 32083456 DOI: 10.1021/acsami.9b19057] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Sulfur-doped two-dimensional (2D) graphitic carbon nitride nanosheets (2D-SCN) with efficient photocatalytic activity were synthesized via (1) polycondensation of thiourea to form bulk sulfur-doped graphitic carbon nitride (SCN) and (2) followed by thermal oxidative treatment of the prepared SCN via an etching strategy to form 2D-SCN. Sulfur was doped in situ into SCN by using thiourea as the precursor, and the 2D nanosheet structure was obtained during the thermal oxidative etching process. The structural, morphological, and optical properties of the 2D-SCN sample were investigated in detail. Herein, it is shown that the thermal oxidative etching treatment and sulfur doping induced a 2D nanosheet structure (2D-SCN-3h) with a thickness of about 4.0 nm and exposure of more sulfur elements on the surface. The surface area increased from 16.6 m2/g for SCN to 226.9 m2/g. Compared to bulk SCN, a blue shift of the absorption peaks was observed for the obtained 2D-SCN-3h photocatalyst, and the absorption intensity was higher than that of the sulfur-free counterpart (2D-CN). The successful in situ doping of S element into SCN or 2D-SCN-3h samples is beneficial to the introduction of surface N defects and O species. 2D-SCN-3h indicated higher efficiency in photogenerated charge carrier separation and showed the highest reductive activity in photocatalytic splitting of water at a rate of 127.4 μmol/h under simulated solar light irradiation, which was 250 times and 3 times higher than that of SCN and 2D-CN photocatalysts, respectively. The apparent quantum efficiency was estimated to be 8.35% at 420 nm irradiation. The S-C-N bond formed by sulfur doping was beneficial to the charge-transfer process, and this led to higher photocatalytic activity according to partial density of state analysis computed by first-principles methods.
Collapse
Affiliation(s)
- Haiqin Lv
- Shenyang Institute of Automation, Guangzhou, Chinese Academy of Science, Guangzhou 511400, PR China
- Guangdong Engineering and Technology Research Center for Environmental Purification and Functional Materials, Guangzhou 511400, PR China
| | - Ying Huang
- Shenyang Institute of Automation, Guangzhou, Chinese Academy of Science, Guangzhou 511400, PR China
- Guangdong Engineering and Technology Research Center for Environmental Purification and Functional Materials, Guangzhou 511400, PR China
| | - Ranjit T Koodali
- Department of Chemistry, University of South Dakota, Vermillion 57069, South Dakota, United States
| | - Guimei Liu
- Hubei Key Laboratory of Accoutrement Technique in Fluid Machinery and Power Engineering, Wuhan University, Wuhan 430072, Hubei, PR China
| | - Yubin Zeng
- Hubei Key Laboratory of Accoutrement Technique in Fluid Machinery and Power Engineering, Wuhan University, Wuhan 430072, Hubei, PR China
| | - Qingguo Meng
- Shenyang Institute of Automation, Guangzhou, Chinese Academy of Science, Guangzhou 511400, PR China
- Guangdong Engineering and Technology Research Center for Environmental Purification and Functional Materials, Guangzhou 511400, PR China
| | - Mingzhe Yuan
- Shenyang Institute of Automation, Guangzhou, Chinese Academy of Science, Guangzhou 511400, PR China
- Guangdong Engineering and Technology Research Center for Environmental Purification and Functional Materials, Guangzhou 511400, PR China
| |
Collapse
|
209
|
Zheng X, Zhang Q, Chen T, Wu Y, Hao J, Tan C, Chen P, Wang F, Liu H, Lv W, Liu G. A novel synthetic carbon and oxygen doped stalactite-like g-C 3N 4 for broad-spectrum-driven indometacin degradation. JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121961. [PMID: 31901544 DOI: 10.1016/j.jhazmat.2019.121961] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/12/2019] [Accepted: 12/21/2019] [Indexed: 06/10/2023]
Abstract
Achieving efficient solar utilization is a primary goal in the field of photocatalytic degradation of PPCPs. For this study, a broad-spectrum carbon and oxygen doped, porous g-C3N4 (COCN) was synthesized via a simple co-pyrolysis of dicyandiamide and methylamine hydroiodide (CH5N·HI). The 0.3COCN demonstrated an excellent photocatalytic degradation of indometacin (IDM), which was 5.9 times higher than bulk g-C3N4. The enhanced photocatalytic activity could be ascribed to the broad-spectrum utilization of solar light and improved charge separation efficiency. Reactive species (RSs) scavenging experiments have shown that O2·- and 1O2 were the dominant active species. Further, the 0.3COCN exhibits excellent yield of hydroxyl radicals which was confirmed by electron spin resonance (ESR) spectra. Meanwhile, the degradation pathways of IDM were proposed according the HRAM LC-MS/MS and total organic carbon (TOC). This research provided a new strategy for a broad-spectrum photocatalyst, and a promising strategy for environmental remediation.
Collapse
Affiliation(s)
- Xiaoshan Zheng
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Qianxin Zhang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Tiansheng Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yuliang Wu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Jun Hao
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Cuiwen Tan
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ping Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China; School of Environment, Tsinghua University, Beijing, 100084, China
| | - Fengliang Wang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Haijin Liu
- Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, School of Environment, Henan Normal University, Xinxiang 453007, China
| | - Wenying Lv
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Guoguang Liu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| |
Collapse
|
210
|
Photocatalytic oxidative-coupling of 5-amino-1H-tetrazole for the synthesis of 5,5′-azotetrazolate energetic salts at mild conditions. CATAL COMMUN 2020. [DOI: 10.1016/j.catcom.2019.105923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
211
|
Zhu Y, Zhang Y, Cheng L, Ismael M, Feng Z, Wu Y. Novel application of g-C3N4/NaNbO3 composite for photocatalytic selective oxidation of biomass-derived HMF to FFCA under visible light irradiation. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.12.040] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
212
|
Das KK, Patnaik S, Mansingh S, Behera A, Mohanty A, Acharya C, Parida K. Enhanced photocatalytic activities of polypyrrole sensitized zinc ferrite/graphitic carbon nitride n-n heterojunction towards ciprofloxacin degradation, hydrogen evolution and antibacterial studies. J Colloid Interface Sci 2020; 561:551-567. [DOI: 10.1016/j.jcis.2019.11.030] [Citation(s) in RCA: 104] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/25/2019] [Accepted: 11/09/2019] [Indexed: 11/27/2022]
|
213
|
Uddin N, Zhang H, Du Y, Jia G, Wang S, Yin Z. Structural-Phase Catalytic Redox Reactions in Energy and Environmental Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905739. [PMID: 31957161 DOI: 10.1002/adma.201905739] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/11/2019] [Indexed: 06/10/2023]
Abstract
The structure-property engineering of phase-based materials for redox-reactive energy conversion and environmental decontamination nanosystems, which are crucial for achieving feasible and sustainable energy and environment treatment technology, is discussed. An exhaustive overview of redox reaction processes, including electrocatalysis, photocatalysis, and photoelectrocatalysis, is given. Through examples of applications of these redox reactions, how structural phase engineering (SPE) strategies can influence the catalytic activity, selectivity, and stability is constructively reviewed and discussed. As observed, to date, much progress has been made in SPE to improve catalytic redox reactions. However, a number of highly intriguing, unresolved issues remain to be discussed, including solar photon-to-exciton conversion efficiency, exciton dissociation into active reductive/oxidative electrons/holes, dual- and multiphase junctions, selective adsorption/desorption, performance stability, sustainability, etc. To conclude, key challenges and prospects with SPE-assisted redox reaction systems are highlighted, where further development for the advanced engineering of phase-based materials will accelerate the sustainable (active, reliable, and scalable) production of valuable chemicals and energy, as well as facilitate environmental treatment.
Collapse
Affiliation(s)
- Nasir Uddin
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Huayang Zhang
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Yaping Du
- School of Materials Science and Engineering, National Institute for Advanced Materials, Center for Rare Earth and Inorganic Functional Materials, Nankai University, Tianjin, 300350, China
| | - Guohua Jia
- Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, Perth, WA, 6845, Australia
| | - Shaobin Wang
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Zongyou Yin
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| |
Collapse
|
214
|
Xue Y, Lu S, Liang Z, Guo Y, Cui H, Tian J. Porous graphitic carbon nitride with nitrogen defects and cobalt-nitrogen (Co N) bonds for efficient broad spectrum (visible and near-infrared) photocatalytic H2 production. J Colloid Interface Sci 2020; 561:719-729. [DOI: 10.1016/j.jcis.2019.11.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/13/2019] [Accepted: 11/13/2019] [Indexed: 02/03/2023]
|
215
|
Jing H, You M, Yi S, Li T, Ji H, Wang Y, Zhang Z, Zhang R, Chen D, Yang H. Precursor-Engineering Coupled Microwave Molten-Salt Strategy Enhances Photocatalytic Hydrogen Evolution Performance of g-C 3 N 4 Nanostructures. CHEMSUSCHEM 2020; 13:827-837. [PMID: 31782967 DOI: 10.1002/cssc.201902730] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 11/18/2019] [Indexed: 05/06/2023]
Abstract
A precursor-engineering strategy coupled with a microwave molten-salt process (PE-MWMS) is developed to synthesize graphitic carbon nitride (g-C3 N4 ) with an isotype triazine/heptazine-based g-C3 N4 heterojunction as a photocatalyst for the hydrogen evolution reaction (HER) under visible light illumination. Four hybrid precursor combinations-thiourea/melamine, thiourea/dicyandiamide, urea/melamine, and urea/dicyandiamide-are used to synthesize g-C3 N4 heterojunctions by the PE-MWMS process. Control experiments indicate that the precursor components and microwave treatment have a great effect on the HER performance of the g-C3 N4 samples. Samples synthesized with the optimal molar ratios of thiourea/melamine (2:1), thiourea/dicyandiamide (2:1), urea/melamine (3:1), and urea/dicyandiamide (3:1), exhibit the highest HER rates of 3135, 2519, 2844, and 2565 μmol g-1 h-1 , respectively. The amounts of heptazine and triazine units in the g-C3 N4 samples can be easily adjusted by changing the ratios of the hybrid precursors and play a decisive role in improving the photocatalytic HER activity. Because of the unique composition and microstructure, the efficient separation of electron-hole pairs, the broadened photo-absorption edges, and the narrowed band gaps, the as-obtained triazine/heptazine-based g-C3 N4 nanostructures exhibit promising activity for HER application.
Collapse
Affiliation(s)
- Huijuan Jing
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P.R. China
| | - Mingzhu You
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P.R. China
| | - Shasha Yi
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P.R. China
| | - Tao Li
- School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, P.R. China
| | - Haipeng Ji
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P.R. China
| | - Yu Wang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P.R. China
| | - Zongtao Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P.R. China
| | - Rui Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P.R. China
| | - Deliang Chen
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P.R. China
- School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, P.R. China
| | - Huaming Yang
- Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, P.R. China
| |
Collapse
|
216
|
Influence of C3N4 Precursors on Photoelectrochemical Behavior of TiO2/C3N4 Photoanode for Solar Water Oxidation. ENERGIES 2020. [DOI: 10.3390/en13040974] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Photoelectrochemical water splitting is considered as a long-term solution for the ever-increasing energy demands. Various strategies have been employed to improve the traditional TiO2 photoanode. In this study, TiO2 nanorods were decorated by graphitic carbon nitride (C3N4) derived from different precursors such as thiourea, melamine, and a mixture of thiourea and melamine. Photoelectrochemical activity of TiO2/C3N4 photoanode can be modified by tuning the number of precursors used to synthesize C3N4. C3N4 derived from the mixture of melamine and thiourea in TiO2/C3N4 photoanode showed photocurrent density as high as 2.74 mA/cm2 at 1.23 V vs. RHE. C3N4 synthesized by thiourea showed particle-like morphology, while melamine and melamine with thiourea derived C3N4 yielded two dimensional (2D) nanosheets. Nanosheet-like C3N4 showed higher photoelectrochemical performance than that of particle-like nanostructures as specific surface area, and the redox ability of nanosheets are believed to be superior to particle-like nanostructures. TiO2/C3N4 displayed excellent photostability up to 20 h under continuous illumination. Thiourea plays an important role in enhancing the photoelectrochemical performance of TiO2/C3N4. This study emphasizes the fact that the improved photoelectrochemical performance can be achieved by varying the precursors of C3N4 in TiO2/C3N4 heterojunction. This is the first report to show the influence of C3N4 precursors on photoelectrochemical performance in TiO2/C3N4 systems. This would pave the way to explore different precursors influence on C3N4 with respect to the photoelectrochemical response of TiO2/C3N4 heterojunction photoanode.
Collapse
|
217
|
Song C, Li X, Hu L, Shi T, Wu D, Ma H, Zhang Y, Fan D, Wei Q, Ju H. Quench-Type Electrochemiluminescence Immunosensor Based on Resonance Energy Transfer from Carbon Nanotubes and Au-Nanoparticles-Enhanced g-C 3N 4 to CuO@Polydopamine for Procalcitonin Detection. ACS APPLIED MATERIALS & INTERFACES 2020; 12:8006-8015. [PMID: 31972073 DOI: 10.1021/acsami.9b22782] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A new type of sandwich electrochemiluminescence (ECL) immunosensor dependent on ECL resonance energy transfer (ECL-RET) to achieve sensitive detection of procalcitonin (PCT) has been designed. In brief, carbon nanotubes (CNT) and Au-nanoparticles-functionalized graphitic carbon nitride (g-C3N4-CNT@Au) and CuO nanospheres covered with polydopamine (PDA) layer (CuO@PDA) were synthesized and applied as ECL donor and receptor, respectively. g-C3N4-CNT nanomaterials were in situ prepared on the basis of π-π conjugation, and the CNT content in the composite were optimized to achieve a strong and stable ECL signal. At the same time, Au nanoparticles were used to functionalize g-C3N4-CNT to further increase the ECL intensity and the loading amount of primary antibody (Ab1). Moreover, CuO@PDA was first used to successfully quench the ECL signal of g-C3N4-CNT@Au. Under the optimum experimental conditions, the linear detection range for PCT concentration was within 0.0001-10 ng mL-1 and the detection limit was 25.7 fg mL-1 (S/N = 3). Considering prominent specificity, reproducibility, and stability, the prepared immunosensor was used to assess recovery rate of PCT in human serum according to the standard addition method and the result was satisfactory. In addition, it is worth mentioning that a novel ECL-RET pair of g-C3N4-CNT@Au (donor)/CuO@PDA (acceptor) was first developed, which offered an effective analytical tool for sensitive detection of biomarkers in early disease diagnostics.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Huangxian Ju
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P.R. China
| |
Collapse
|
218
|
Tang W, Tian Y, Chen B, Xu Y, Li B, Jing X, Zhang J, Xu S. Supramolecular Copolymerization Strategy for Realizing the Broadband White Light Luminescence Based on N-Deficient Porous Graphitic Carbon Nitride (g-C 3N 4). ACS APPLIED MATERIALS & INTERFACES 2020; 12:6396-6406. [PMID: 31916432 DOI: 10.1021/acsami.9b19338] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The N-deficient porous g-C3N4 with broadband white light emission was constructed by supramolecular copolymerization design, which combined organic copolymers cyanuric acid and 2,4,6-triaminopyrimidine with melamine upon the mixture gas environment of (95%)N2/(5%)H2. Herein, we achieved great breakthrough in narrowing the band gap of g-C3N4 from 2.64 to 1.39 eV. Furthermore, in contrast to pristine g-C3N4, we demonstrated that the emission wavelengths of N-deficient porous g-C3N4 can be tuned from narrow blue to broadband white range, where the optimal white light coordinate position is (0.297, 0.345). The prepared N-deficient porous g-C3N4 overcomes the limitation of the narrow adjusting range of optical properties while using conventional g-C3N4 and makes it more promising for applications in solid-state displays.
Collapse
Affiliation(s)
- Wenhua Tang
- Institute of Photoelectric Materials and Devices , China Jiliang University , Hangzhou 310018 , PR China
| | - Ying Tian
- Institute of Photoelectric Materials and Devices , China Jiliang University , Hangzhou 310018 , PR China
| | - BoWen Chen
- Institute of Optoelectronic Technology , China Jiliang University , Hangzhou 310018 , PR China
| | - Yayan Xu
- Institute of Photoelectric Materials and Devices , China Jiliang University , Hangzhou 310018 , PR China
| | - Bingpeng Li
- Institute of Photoelectric Materials and Devices , China Jiliang University , Hangzhou 310018 , PR China
| | - Xufeng Jing
- Institute of Optoelectronic Technology , China Jiliang University , Hangzhou 310018 , PR China
| | - Junjie Zhang
- Institute of Photoelectric Materials and Devices , China Jiliang University , Hangzhou 310018 , PR China
| | - Shiqing Xu
- Institute of Photoelectric Materials and Devices , China Jiliang University , Hangzhou 310018 , PR China
| |
Collapse
|
219
|
Chubenko EB, Denisov NM, Baglov AV, Bondarenko VP, Uglov VV, Borisenko VE. Recovery Behavior of the Luminescence Peak from Graphitic Carbon Nitride as a Function of the Synthesis Temperature. CRYSTAL RESEARCH AND TECHNOLOGY 2020. [DOI: 10.1002/crat.201900163] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Eugene B. Chubenko
- Belarusian State University of Informatics and Radioelectronics; P. Browka 6 220013 Minsk Belarus
| | - Nikita M. Denisov
- Belarusian State University of Informatics and Radioelectronics; P. Browka 6 220013 Minsk Belarus
| | - Aleksey V. Baglov
- Belarusian State University of Informatics and Radioelectronics; P. Browka 6 220013 Minsk Belarus
| | - Vitaly P. Bondarenko
- Belarusian State University of Informatics and Radioelectronics; P. Browka 6 220013 Minsk Belarus
| | - Vladimir V. Uglov
- Belarusian State University; Nezavisimosti Av. 2 220030 Minsk Belarus
- South Ural State University; Lenina Av. 76 454080 Chelyabinsk Russia
| | - Viktor E. Borisenko
- Belarusian State University of Informatics and Radioelectronics; P. Browka 6 220013 Minsk Belarus
- National Research Nuclear University MEPhI; Kashirskoe Shosse 31 115409 Moscow Russia
| |
Collapse
|
220
|
Ganesamurthi J, Keerthi M, Chen SM, Shanmugam R. Electrochemical detection of thiamethoxam in food samples based on Co 3O 4 Nanoparticle@Graphitic carbon nitride composite. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:110035. [PMID: 31809952 DOI: 10.1016/j.ecoenv.2019.110035] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 11/26/2019] [Accepted: 11/29/2019] [Indexed: 05/26/2023]
Abstract
Thiamethoxam is a class of neonicotinoid insecticide widely used in agriculture. Due to their high water solubility, thiamethoxam can be transported to surface waters and have the potential to be toxic to human life. Herein, a simple and robust method is presented for the detection of thiamethoxam based on hydrothermally synthesized nanoparticles of cobalt oxide into the graphitic carbon nitride composite (Co3O4@g-C3N4 NC). The materials were well characterized by XRD, FT-IR, XPS, FESEM, HRTEM, EDX, and UV-vis which provide crystalline nature, structure, and composition. The impedance measurement shows an intimate electrode/electrolyte interface by casting Co3O4@g-C3N4 onto a screen-printed carbon electrode (SPCE), delivering an interfacial resistance as low as 12.5 Ωcm2. The cyclic voltammetry and differential pulse voltammetry measurements exhibit the nanocomposite as a superior electrocatalyst for the electrochemical detection of thiamethoxam and achieved a low detection limit of 4.9 nM with a wide linear range of 0.01-420 μM. The present work also demonstrates a promising strategy for electrochemical detection of thiamethoxam in real samples such as potato and brown rice.
Collapse
Affiliation(s)
- Jaysiva Ganesamurthi
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Murugan Keerthi
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan.
| | - Ragurethinam Shanmugam
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan
| |
Collapse
|
221
|
Chen F, Xue L, Shang Z, Zhang Z, Chen D. An enhanced non-noble perovskite-based oxygen electrocatalyst for efficient oxygen reduction and evolution reactions. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2019.121119] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
222
|
Quantum-chemical calculations on graphitic carbon nitride (g-C3N4) single-layer nanostructures: polymeric slab vs. quantum dot. Struct Chem 2020. [DOI: 10.1007/s11224-020-01496-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
223
|
Li J, Qi Y, Mei Y, Ma S, Li Q, Xin B, Yao T, Wu J. Construction of phosphorus-doped carbon nitride/phosphorus and sulfur co-doped carbon nitride isotype heterojunction and their enhanced photoactivity. J Colloid Interface Sci 2020; 566:495-504. [PMID: 32058102 DOI: 10.1016/j.jcis.2020.01.102] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/05/2020] [Accepted: 01/25/2020] [Indexed: 10/25/2022]
Abstract
Photocatalysis was one of the most promising techniques for environmental remediation. Exploring photocatalysts with high efficiency, low cost and easy preparation was still an ongoing issue. In this work, phosphorus-doped carbon nitride/phosphorus and sulfur co-doped carbon nitride (P-C3N4/PS-C3N4) isotype heterojunction was prepared by a two-step calcination method. The composite displayed a sheet-like structure with a surface area of 23 m2/g. Compared with pure C3N4, band gaps of P-C3N4 and PS-C3N4 were only slightly modified during the heteroatom-doping process. Therefore, a well-matched band alignment was constructed, which not only improved the separation efficiency of photogenerated electron-hole pairs, but also well preserved the high oxidizability of holes on valance band and good reducibility of electrons on conduction band. Because of the similarity in physicochemical properties, the interface resistance between P-C3N4 and PS-C3N4 was low, which accelerated the electron transfer and prolonged the lifetime of charge carriers. Although the visible-light utilization was somewhat low in comparison with P-C3N4 and PS-C3N4, by taking advantage of above merits, P-C3N4/PS-C3N4 displayed the high photocatalytic activity in rhodamine B degradation, and the reaction rate constant was 0.183 min-1, about 8.7 and 4.0 times higher than those of P-C3N4 and PS-C3N4. Besides high catalytic activity, isotype heterojunction displayed good recyclability, since 95.3% of catalytic activity was maintained after the 5th cycle. The method presented here was facile, economic and environmentally benign, thus it was highly attractive for the application in environmental remediation.
Collapse
Affiliation(s)
- Jiaqi Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Yi Qi
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Yuqing Mei
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Shouchun Ma
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Qi Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Baifu Xin
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China.
| | - Tongjie Yao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China.
| | - Jie Wu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China.
| |
Collapse
|
224
|
Xu Y, You Y, Huang H, Guo Y, Zhang Y. Bi 4NbO 8Cl {001} nanosheets coupled with g-C 3N 4 as 2D/2D heterojunction for photocatalytic degradation and CO 2 reduction. JOURNAL OF HAZARDOUS MATERIALS 2020; 381:121159. [PMID: 31557713 DOI: 10.1016/j.jhazmat.2019.121159] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/14/2019] [Accepted: 09/04/2019] [Indexed: 05/21/2023]
Abstract
Photocatalytic activity is largely restricted by insufficient photoabsorption and intense recombination between charge carriers. Here, we first synthesized Bi4NbO8Cl nanosheets with {001} exposing facets by a molten-salt growth method, which shows largely promoted photocatalytic performance for the degradation of tetracycline (TC) and bisphenol A (BPA) in comparison with Bi4NbO8Cl particles obtained by solid-state reaction. The 2D/2D Bi4NbO8Cl/g-C3N4 heterojunction photocatalysts were then fabricated via high-energy ball-milling and post-sintering to realize intimate interfacial interaction. The photocatalytic activity of all the Bi4NbO8Cl/g-C3N4 composites largely enhances compared to Bi4NbO8Cl nanosheets and g-C3N4, also far exceeding the mechanically-mixed Bi4NbO8Cl nanosheets and g-C3N4. The impact of different reaction parameters on the photocatalytic degradation activities was investigated, including catalyst concentration, pH value and TC concentration. In addition, Bi4NbO8Cl/g-C3N4 also presents improved photocatalytic CO2 reduction activity for CO production. The large enhancement on photocatalytic activity of Bi4NbO8Cl/g-C3N4 composites is owing to the synergistic effect of favorable 2D/2D structure and construction of type II heterojunction with intimate interfacial interaction, thus boosting the charge separation. The formation of type II heterojunction was evidenced by selective photo-deposition of Pt and MnOx, which demonstrate that the reductive sites and oxidative sites are on Bi4NbO8Cl nanosheets and g-C3N4, respectively. This work may provide some insights into fabrication of efficient visible-light driven photocatalysts for environmental and energy applications.
Collapse
Affiliation(s)
- Yue Xu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Yong You
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China.
| | - Yuxi Guo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou Higher Education Mega Center, Guangzhou, 510006, China.
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China
| |
Collapse
|
225
|
Zhao C, Liao Z, Liu W, Liu F, Ye J, Liang J, Li Y. Carbon quantum dots modified tubular g-C 3N 4 with enhanced photocatalytic activity for carbamazepine elimination: Mechanisms, degradation pathway and DFT calculation. JOURNAL OF HAZARDOUS MATERIALS 2020; 381:120957. [PMID: 31421549 DOI: 10.1016/j.jhazmat.2019.120957] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/31/2019] [Accepted: 08/01/2019] [Indexed: 05/27/2023]
Abstract
A novel tubular graphitic carbon nitride (g-C3N4) modified with carbon quantum dots (CQDs) was fabricated and employed for the elimination of carbamazepine (CBZ) under visible light irradiation. The as-fabricated metal-free catalysts exhibited tubular morphologies due to the preforming of tubular protonated melamine with CQDs surface adsorption as the polymerization precursors. The surface bonded CQDs did not alter the band gap structure of g-C3N4, but greatly inhibited the charge recombination. Therefore, the CBZ degradation kinetics of tubular g-C3N4 were increased by over 5 times by the incorporation of CQDs. The main active species for CBZ degradation were found to be superoxide radical (O2-) and photo-generated holes (h+), which were further confirmed by electron spin resonance (ESR) analysis. In addition, the degradation pathways of CBZ were clarified via intermediates identification and quantum chemical computation using density functional theory (DFT) and wave function analysis. The olefinic double bond with the highest condensed Fukui index (f0 = 0.108) in CBZ molecule was found to be the most preferable sites for radical attack. Moreover, good stability of the as-prepared photocatalysts was observed in the consecutive recycling cycles, while the slight decline of photocatalytic activity was attributed to the minimal surface oxidation.
Collapse
Affiliation(s)
- Chun Zhao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment of Ministry of Education, Chongqing University, Chongqing 400044, PR China
| | - Zhenzhu Liao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment of Ministry of Education, Chongqing University, Chongqing 400044, PR China
| | - Wen Liu
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China; The Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT), Peking University, Beijing, 100871, PR China
| | - Fuyang Liu
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China
| | - Jiangyu Ye
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment of Ministry of Education, Chongqing University, Chongqing 400044, PR China
| | - Jialiang Liang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment of Ministry of Education, Chongqing University, Chongqing 400044, PR China.
| | - Yunyi Li
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment of Ministry of Education, Chongqing University, Chongqing 400044, PR China.
| |
Collapse
|
226
|
Cyril PH, Saravanan G. Development of advanced materials for cleaner energy generation through fuel cells. NEW J CHEM 2020. [DOI: 10.1039/d0nj03746j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The use of fuel cells in the transportation sector holds promise as a sustainable option for the generation of cleaner energy along with cumulative lesser GHG emissions.
Collapse
Affiliation(s)
- Priscilla Hyacinth Cyril
- Chennai Zonal Centre, CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), CSIR-Madras Complex
- Chennai-600 113
- India
| | - Govindachetty Saravanan
- Chennai Zonal Centre, CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), CSIR-Madras Complex
- Chennai-600 113
- India
| |
Collapse
|
227
|
Thangavel N, Pandi K, Shaheer ARM, Neppolian B. Surface-state-induced upward band bending in P doped g-C 3N 4 for the formation of an isotype heterojunction between bulk g-C 3N 4 and P doped g-C 3N 4: photocatalytic hydrogen production. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01543a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The staggered type heterojunction with g-C3N4 based nanomaterials has received much attention owing to its change in chemical potential between two semiconductors.
Collapse
Affiliation(s)
- Nithya Thangavel
- SRM Research Institute
- SRM Institute of Science and Technology
- Chennai-603203
- India
| | - Kavitha Pandi
- SRM Research Institute
- SRM Institute of Science and Technology
- Chennai-603203
- India
| | | | | |
Collapse
|
228
|
Fu Y, Zheng M, Li Q, Zhang L, Wang S, Kondratiev VV, Jiang B. Interfacial engineering by creating Cu-based ternary heterostructures on C 3N 4 tubes towards enhanced photocatalytic oxidative coupling of benzylamines. RSC Adv 2020; 10:28059-28065. [PMID: 35519140 PMCID: PMC9055690 DOI: 10.1039/d0ra03164j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 07/18/2020] [Indexed: 12/28/2022] Open
Abstract
Benzylamine coupling is a very important reaction for the synthesis of imine but still faces many challenges. Herein, we present a highly effective strategy towards the coupling reaction by using environmentally friendly catalysts. These catalysts are composed of Cu/Cu2O/Cu3N heterostructures supported by C3N4 tubes and the composites were synthesized by one-step hydrothermal treatment followed by calcination. Cu2O, Cu3N, and C3N4 all are responsive to visible light and the heterojunction formed can greatly enhance the charge separation. When used as photocatalysts for oxidative self-coupling of benzylamine at a low temperature of 323 K in air, Cu/Cu2O/Cu3N/C3N4 was able to give conversion and selectivity values of up to 99% and 98%, respectively. The high efficiency of the catalysts is attributable to their ability to generate large quantities of free radicals (such as ·OH and ·O2−) under visible-light irradiation. Cu/Cu2O/Cu3N heterostructures supported C3N4 tubes were synthesized by one-step hydrothermal treatment followed by calcination, which showed enhanced photocatalytic activity for oxidative self-coupling of benzylamine under visible-light.![]()
Collapse
Affiliation(s)
- Yunqi Fu
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
| | - Mang Zheng
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
| | - Qi Li
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
| | - Liping Zhang
- Department of Chemistry and Biochemistry
- Kent State University
- Kent
- USA
| | - Shuai Wang
- Department of Food and Environment Engineering
- Heilongjiang East University
- Harbin
- China
| | | | - Baojiang Jiang
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
| |
Collapse
|
229
|
Balasubramanian J, Ponnaiah SK, Periakaruppan P, Kamaraj D. Accelerated photodeterioration of class I toxic monocrotophos in the presence of one-pot constructed Ag 3PO 4/polyaniline@g-C 3N 4 nanocomposite: efficacy in light harvesting. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:2328-2339. [PMID: 31782097 DOI: 10.1007/s11356-019-06811-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/17/2019] [Indexed: 06/10/2023]
Abstract
Water and soil contamination has become unavoidable due to the enormous usage of pesticides in agriculture. Among the pesticides, monocrotophos (MCP), a popular and largely used pesticide, is extremely toxic to birds and humans, which is easily leached into the environment. Therefore, establishment of a green tactic to clean the environment from such hazard is very essential. Herein, we have developed a novel ternary nanocomposite, Ag3PO4/polyaniline@g-C3N4 with enhanced electron-hole separation efficiency, a condition which is very much required for any photocatalyst. The nanocomposite was one-pot synthesized by a simple and economical hydrothermal method. The strategically modulated band gaps of the nanocomposite help harvest the sunlight efficaciously for the robust degradation of MCP (99.6%). It has been found that the active species involved in the photo-cleaning process are OH· and O2·-. A suitable reaction mechanism has been proposed and discussed. Analytical techniques, which include energy-dispersive X-ray spectroscopy (EDX), field emission scanning electron microscopy (FE-SEM), elemental mapping analysis, high-resolution transmission electron microscopy (HR-TEM), Fourier transform infrared (FT-IR) spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy (UV-DRS), and X-ray diffraction (XRD), were used to characterize the synthesized nanocomposite. This nano-photocatalyst, which is simple, stable, and reusable, certainly has potential applications in soil contamination remediation, sewage treatments, and other environment decontaminations. Also, a study of this kind offers more strategic plans for the production of clean energy (hydrogen) by solar-driven water splitting.
Collapse
Affiliation(s)
| | | | | | - Dhivya Kamaraj
- Department of Civil Engineering, Sethu Institute of Technology, Virudhunagar, Tamil Nadu, 626115, India
| |
Collapse
|
230
|
Dong G, Wen Y, Fan H, Wang C, Cheng Z, Zhang M, Ma J, Zhang S. Graphitic carbon nitride with thermally-induced nitrogen defects: an efficient process to enhance photocatalytic H2 production performance. RSC Adv 2020; 10:18632-18638. [PMID: 35518330 PMCID: PMC9053999 DOI: 10.1039/d0ra01425g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 05/09/2020] [Indexed: 11/21/2022] Open
Abstract
An efficient thermal-treatment method was developed for the preparation of defect modified g-C3N4 with excellent photocatalytic H2 production performance.
Collapse
Affiliation(s)
- Guangzhi Dong
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Yun Wen
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Huiqing Fan
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Chao Wang
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Zhenxiang Cheng
- Institute for Superconducting and Electronic Materials
- Australia Institute of Innovative Materials
- University of Wollongong
- Wollongong
- Australia
| | - Mingchang Zhang
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Jiangwei Ma
- State Key Laboratory of Solidification Processing
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi'an
- PR China
| | - Shujun Zhang
- Institute for Superconducting and Electronic Materials
- Australia Institute of Innovative Materials
- University of Wollongong
- Wollongong
- Australia
| |
Collapse
|
231
|
Shin J, Heo JN, Do JY, Kim YI, Yoon SJ, Kim YS, Kang M. Effective charge separation in rGO/NiWO4@Au photocatalyst for efficient CO2 reduction under visible light. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.09.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
232
|
Wang Y, Zhao R, Wang F, Liu Y, Yu X, Chen L, Yao Y, Lu S, Liao X. Ultralow-temperature synthesis of small Ag-doped carbon nitride for nitrogen photofixation. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01532f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A low-temperature-reduction–deposition method is used to prepare homogeneously dispersed Ag0/g-C3N4 for efficient N2 photofixation.
Collapse
Affiliation(s)
- Yingzhi Wang
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| | - Rui Zhao
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| | - Fan Wang
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| | - Yong Liu
- Department of Chemical Engineering
- University of New Hampshire
- Durham
- USA
| | - Xiaohu Yu
- Institute of Theoretical and Computational Chemistry
- Shaanxi Key Laboratory of Catalysis
- School of Chemical & Environment Sciences
- Shaanxi University of Technology
- Hanzhong
| | - Lungang Chen
- Key Laboratory of Renewable Energy
- Chinese Academy of Sciences
- Guangzhou
- China
| | - Yue Yao
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization
| | - Shuxiang Lu
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization
| | - Xiaoyuan Liao
- College of Chemical Engineering and Materials Science
- Tianjin University of Science and Technology
- Tianjin
- China
| |
Collapse
|
233
|
Sun X, Shi L, Huang H, Song X, Ma T. Surface engineered 2D materials for photocatalysis. Chem Commun (Camb) 2020; 56:11000-11013. [DOI: 10.1039/d0cc04790b] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
2D materials, with thin thickness, large lateral size and abundant exposed surface atoms with dominant facets, provide ideal platforms for carrying out surface engineering at the atomic level for optimizing their photocatalytic performance.
Collapse
Affiliation(s)
- Xiaodong Sun
- Institute of Clean Energy Chemistry
- Key Laboratory for Green Synthesis and Preparative Chemistry of Adv. Mater
- College of Chemistry
- Liaoning University
- Shenyang 110036
| | - Litong Shi
- Institute of Clean Energy Chemistry
- Key Laboratory for Green Synthesis and Preparative Chemistry of Adv. Mater
- College of Chemistry
- Liaoning University
- Shenyang 110036
| | - Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
- China
| | - Ximing Song
- Institute of Clean Energy Chemistry
- Key Laboratory for Green Synthesis and Preparative Chemistry of Adv. Mater
- College of Chemistry
- Liaoning University
- Shenyang 110036
| | - Tianyi Ma
- Discipline of Chemistry
- School of Environmental & Life Sciences
- The University of Newcastle
- Callaghan
- Australia
| |
Collapse
|
234
|
Choi JY, Choi W, Park JW, Lim CK, Song H. Strategies for Designing Nanoparticles for Electro‐ and Photocatalytic CO
2
Reduction. Chem Asian J 2019; 15:253-265. [DOI: 10.1002/asia.201901533] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/09/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Ji Yong Choi
- Department of ChemistryKorea Advanced Institute of Science and Technology 291 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea
| | - Woong Choi
- Department of ChemistryKorea Advanced Institute of Science and Technology 291 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea
| | - Joon Woo Park
- Department of ChemistryKorea Advanced Institute of Science and Technology 291 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea
| | - Chan Kyu Lim
- Department of ChemistryKorea Advanced Institute of Science and Technology 291 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea
| | - Hyunjoon Song
- Department of ChemistryKorea Advanced Institute of Science and Technology 291 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea
| |
Collapse
|
235
|
Tang Y, Tao Y, Zhou T, Yang B, Wang Q, Zhu Z, Xie A, Luo S, Yao C, Li X. Direct Z-scheme La 1-xCe xMnO 3 catalyst for photothermal degradation of toluene. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:36832-36844. [PMID: 31745794 DOI: 10.1007/s11356-019-06856-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
A series of Ce-doped LaMnO3 (La1-xCexMnO3) were prepared and were tested for gaseous toluene oxidation in order to investigate the effect of cerium doping in LaMnO3 on activity under photothermal conditions. It was found that the activity and CO2 yield of the catalyst can be effectively increased when x = 0.25. A group of characterization is used to characterize the morphology, composition, and physical properties of the as-prepared catalysts. Results show that the Ce-doped LaMnO3 can form coexistence of La1-xCexMnO3 and CeO2, the reaction of CeO2/La1-xCexMnO3 under photothermal conditions follows the Mars-van Krevelen redox cycle mechanism, and the prepared CeO2/La1-xCexMnO3 can form a highly efficient Z-scheme heterojunction, which can enhance the electrons transfer speed of the catalyst. Moreover, in the photothermal catalytic degradation, lattice oxygen is the most important active substance, a small amount of cerium doping can increase the lattice oxygen content of perovskite and increase the activity of the reaction.
Collapse
Affiliation(s)
- Yiran Tang
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Yuwei Tao
- Center of Information Development and Management, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Ting Zhou
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Baozhu Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Qing Wang
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Zerui Zhu
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Aijuan Xie
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China.
| | - Shiping Luo
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China.
| | - Chao Yao
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Xiazhang Li
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| |
Collapse
|
236
|
Jourshabani M, Dominic JA, Achari G, Shariatinia Z. Synergetic photocatalytic ozonation using modified graphitic carbon nitride for treatment of emerging contaminants under UVC, UVA and visible irradiation. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.115181] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
237
|
Dong M, Yu J, Wang J, Zhang Q, Lin W. Construction of phenyl-grafted carbon nitride for enhancing the visible-light activity. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136817] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
238
|
Wang L, Hou Y, Xiao S, Bi F, Zhao L, Li Y, Zhang X, Gai G, Dong X. One-step, high-yield synthesis of g-C 3N 4 nanosheets for enhanced visible light photocatalytic activity. RSC Adv 2019; 9:39304-39314. [PMID: 35540641 PMCID: PMC9076094 DOI: 10.1039/c9ra08922e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 11/14/2019] [Indexed: 12/20/2022] Open
Abstract
A facile template-free one-step synthesis method of ultrathin g-C3N4 nanosheets was developed through thermal polycondensation of melamine. The higher temperature, prolonged time and tightly sealed crucible reaction system contributed to the formation of ultrathin g-C3N4 nanosheets. The as-synthesized g-C3N4 nanosheets were applied to the visible light photocatalytic degradation of RhB. The photocatalytic activity was significantly enhanced with increased calcination temperature from 500 °C to 650 °C and prolonged calcination time from 4 h to 10 h. Interestingly, the obtained ultrathin g-C3N4 nanosheets simultaneously possess high yield and excellent photocatalytic activity. Moreover, g-C3N4 nanosheets can maintain photochemical stability after five consecutive runs. The remarkably enhanced photocatalytic activity can be interpreted as the synergistic effects of the enhanced crystallinity, the large surface area, the reduced layer thickness and size and the reduced number of defects. A new layer exfoliation and splitting mechanism of the formation of the ultrathin nanosheets was proposed. This work provides a new strategy to develop a facile eco-friendly template-free one-step synthesis method for potential large-scale synthesis of ultrathin nanosheets with high yield, high photocatalytic efficiency and stable activity for environmental and energetic applications.
Collapse
Affiliation(s)
- Liyan Wang
- Key Laboratory of Building Energy-Saving Technology Engineering, College of Materials Science and Engineering, Jilin Jianzhu University Changchun P. R. China +86-431-84566095 +86-431-84566095
| | - Yangwen Hou
- Key Laboratory of Building Energy-Saving Technology Engineering, College of Materials Science and Engineering, Jilin Jianzhu University Changchun P. R. China +86-431-84566095 +86-431-84566095
| | - Shanshan Xiao
- Key Laboratory of Building Energy-Saving Technology Engineering, College of Materials Science and Engineering, Jilin Jianzhu University Changchun P. R. China +86-431-84566095 +86-431-84566095
| | - Fei Bi
- Key Laboratory of Building Energy-Saving Technology Engineering, College of Materials Science and Engineering, Jilin Jianzhu University Changchun P. R. China +86-431-84566095 +86-431-84566095
| | - Li Zhao
- Key Laboratory of Building Energy-Saving Technology Engineering, College of Materials Science and Engineering, Jilin Jianzhu University Changchun P. R. China +86-431-84566095 +86-431-84566095
| | - Yingqi Li
- Key Laboratory of Building Energy-Saving Technology Engineering, College of Materials Science and Engineering, Jilin Jianzhu University Changchun P. R. China +86-431-84566095 +86-431-84566095
| | - Xiaojia Zhang
- Key Laboratory of Building Energy-Saving Technology Engineering, College of Materials Science and Engineering, Jilin Jianzhu University Changchun P. R. China +86-431-84566095 +86-431-84566095
| | - Guangqing Gai
- Key Laboratory of Building Energy-Saving Technology Engineering, College of Materials Science and Engineering, Jilin Jianzhu University Changchun P. R. China +86-431-84566095 +86-431-84566095
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology Changchun P. R. China +86-431-85383815 +86-431-85582574
| |
Collapse
|
239
|
Amperometric detection of glucose based on immobilizing glucose oxidase on g-C3N4 nanosheets. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123808] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
240
|
Study of Transition Metal Ion Doped CdS Nanoparticles for Removal of Dye from Textile Wastewater. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01343-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
241
|
Baral B, Reddy KH, Parida K. Construction of M-BiVO4/T-BiVO4 isotype heterojunction for enhanced photocatalytic degradation of Norfloxacine and Oxygen evolution reaction. J Colloid Interface Sci 2019; 554:278-295. [DOI: 10.1016/j.jcis.2019.07.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/31/2019] [Accepted: 07/03/2019] [Indexed: 01/08/2023]
|
242
|
Improvement of hydrogen production under solar light using cobalt (II) phosphide hydroxide co-doped g-C3N4 photocatalyst. RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI 2019. [DOI: 10.1007/s12210-019-00844-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
243
|
Navlani-García M, Salinas-Torres D, Mori K, Kuwahara Y, Yamashita H. Photocatalytic Approaches for Hydrogen Production via Formic Acid Decomposition. Top Curr Chem (Cham) 2019; 377:27. [PMID: 31559502 DOI: 10.1007/s41061-019-0253-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/10/2019] [Indexed: 10/25/2022]
Abstract
The photocatalytic dehydrogenation of formic acid has recently emerged as an outstanding alternative to the traditional thermal catalysts widely applied in this reaction. The utilization of photocatalytic processes for the production of hydrogen is an appealing strategy that perfectly matches with the idea of a green and sustainable future energy scenario. However, it sounds easier than it is, and great efforts have been needed to design and develop highly efficient photocatalysts for the production of hydrogen from formic acid. In this work, some of the most representative strategies adopted for this application are reviewed, paying particular attention to systems based on TiO2, CdS and C3N4.
Collapse
Affiliation(s)
- Miriam Navlani-García
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan.,University Materials Institute of Alicante (IUMA), University of Alicante (UA), Ap. 99, 03080, Alicante, Spain
| | - David Salinas-Torres
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan.,University Materials Institute of Alicante (IUMA), University of Alicante (UA), Ap. 99, 03080, Alicante, Spain
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan. .,Unit of Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto, 615-8520, Japan.
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan.,Unit of Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto, 615-8520, Japan
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan. .,Unit of Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto, 615-8520, Japan.
| |
Collapse
|
244
|
Graphitic Carbon Nitride Materials for Photocatalytic Hydrogen Production via Water Splitting: A Short Review. Catalysts 2019. [DOI: 10.3390/catal9100805] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The generation of photocatalytic hydrogen via water splitting under light irradiation is attracting much attention as an alternative to solve such problems as global warming and to increase interest in clean energy. However, due to the low efficiency and selectivity of photocatalytic hydrogen production under solar energy, a major challenge persists to improve the performance of photocatalytic hydrogen production through water splitting. In recent years, graphitic carbon nitride (g-C3N4), a non-metal photocatalyst, has emerged as an attractive material for photocatalytic hydrogen production. However, the fast recombination of photoexcited electron–hole pairs limits the rate of hydrogen evolution and various methods such as modification, heterojunctions with semiconductors, and metal and non-metal doping have been applied to solve this problem. In this review, we cover the rational design of g-C3N4-based photocatalysts achieved using methods such as modification, metal and non-metal doping, and heterojunctions, and we summarize recent achievements in their application as hydrogen production photocatalysts. In addition, future research and prospects of hydrogen-producing photocatalysts are also reviewed.
Collapse
|
245
|
Chang X, Yao X, Ding N, Yin X, Zheng Q, Lu S, Shuai D, Sun Y. Photocatalytic degradation of trihalomethanes and haloacetonitriles on graphitic carbon nitride under visible light irradiation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 682:200-207. [PMID: 31121346 DOI: 10.1016/j.scitotenv.2019.05.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 04/25/2019] [Accepted: 05/06/2019] [Indexed: 06/09/2023]
Abstract
Trihalomethanes (THMs) and haloacetonitriles (HANs), most common disinfection by-products in drinking water, pose adverse environmental impacts and potential risks to human health. There is a pressing need to develop innovative, economically feasible, and environmentally benign processes to control these persistent contaminants. In this paper, visible-light-responsive graphitic carbon nitride (g-C3N4) samples were synthesized to degrade the THMs and HANs and the photocatalytic degradation mechanism was explored. The results indicated that a carbon-doped g-C3N4 with an optimum dopant content (MCB0.07) displayed the best photocatalytic activity for the total trihalomethanes (TTHM) and total haloacetonitriles (THAN), with the reaction rate constant of 11.6 and 10.4 (10-3 min-1), respectively. MCB0.07 demonstrated a high THMs and HANs removal efficiency under visible light irradiation and could be reused. According to scavenger tests of the selected reactive species and X-ray photoelectron spectroscopy, holes play a dominant role for both THMs and HANs degradation on the MCB0.07. The degradation of HANs by holes proceeded mainly through breakage of the CC bond in the CCN group. The THMs degradation was achieved through hydrogen abstraction or/and dehalogenation. The brominated-THMs/HANs were more photosensitive than their chlorinated analogous and were less stable than bromo-chloro-THMs/HANs. This study sheds light on the mechanism of the photocatalytic degradation of THMs and HANs under visible light irradiation by carbon-doped g-C3N4. Furthermore, it could provide insights for engineering applications and contaminant control in drinking water purification.
Collapse
Affiliation(s)
- Xueming Chang
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Xiaolong Yao
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China.
| | - Ning Ding
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Xiufeng Yin
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Qinmin Zheng
- Department of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, US
| | - Songliu Lu
- Tus-Water Group Limited, Shanghai 200072, China
| | - Danmeng Shuai
- Department of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, US
| | - Yingxue Sun
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China.
| |
Collapse
|
246
|
You S, Guo S, Zhao X, Sun M, Sun C, Su Z, Wang X. All-inorganic perovskite/graphitic carbon nitride composites for CO 2 photoreduction into C1 compounds under low concentrations of CO 2. Dalton Trans 2019; 48:14115-14121. [PMID: 31495846 DOI: 10.1039/c9dt02468a] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
CsPbBr3 is widely used in solar cells and LEDs for its excellent photoelectric properties that are also attractive for CO2 photoreduction, but it is less used in the photocatalytic reduction of CO2 mainly owing to its limited charge separation efficiency. To alleviate this issue, herein, all-inorganic orthorhombic CsPbBr3 was combined with graphitic carbon nitride (g-C3N4) and the resultant composite (CsPbBr3@g-C3N4) showed enhanced activity in CO2 photoreduction. Under the irradiation of AM1.5 filter for 12 h, CO2 was converted into CH4 and CO with high selectivity to methane (91%) and the total amount of gaseous products up to ∼300 μmol g-1. This reactivity is 6-fold and 4-fold higher than that of pure g-C3N4 and CsPbBr3, respectively. CsPbBr3@g-C3N4 also shows excellent catalytic activity at low concentrations of CO2. Studies of energy band level and steady-state and transient photoluminescence spectroscopy indicated that the incorporation of CsPbBr3 and g-C3N4 increases charge separation, which may result in sharply enhanced catalytic efficiency. This study has provided opportunities for the combination of CsPbBr3 and other semiconductor catalysts for the photocatalytic reduction of CO2.
Collapse
Affiliation(s)
- Siqi You
- National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry, Northeast Normal University Changchun, Jilin, 130024, P.R. China.
| | - Shaohong Guo
- National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry, Northeast Normal University Changchun, Jilin, 130024, P.R. China.
| | - Xue Zhao
- National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry, Northeast Normal University Changchun, Jilin, 130024, P.R. China.
| | - Min Sun
- National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry, Northeast Normal University Changchun, Jilin, 130024, P.R. China.
| | - Chunyi Sun
- National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry, Northeast Normal University Changchun, Jilin, 130024, P.R. China.
| | - Zhongmin Su
- National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry, Northeast Normal University Changchun, Jilin, 130024, P.R. China. and Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology Changchun, Jilin, China.
| | - Xinlong Wang
- National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry, Northeast Normal University Changchun, Jilin, 130024, P.R. China.
| |
Collapse
|
247
|
Fan X, Wang T, Gao B, Xie X, Zhang S, Meng X, Gong H, Guo Y, Huang X, He J. Layered double hydroxides decorated graphic carbon nitride film as efficient photoanodes for photoelectrochemical water splitting. Catal Today 2019. [DOI: 10.1016/j.cattod.2019.01.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
248
|
Babu P, Mohanty S, Naik B, Parida K. Serendipitous Assembly of Mixed Phase BiVO4 on B-Doped g-C3N4: An Appropriate p–n Heterojunction for Photocatalytic O2 evolution and Cr(VI) reduction. Inorg Chem 2019; 58:12480-12491. [DOI: 10.1021/acs.inorgchem.9b02309] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Pradeepta Babu
- Centre for Nanoscience and Nanotechnology, Siksha ‘O’ Anusandhan, Bhubaneswar 751030, India
| | - Satyaranjan Mohanty
- Centre for Nanoscience and Nanotechnology, Siksha ‘O’ Anusandhan, Bhubaneswar 751030, India
| | - Brundabana Naik
- Centre for Nanoscience and Nanotechnology, Siksha ‘O’ Anusandhan, Bhubaneswar 751030, India
| | - Kulamani Parida
- Centre for Nanoscience and Nanotechnology, Siksha ‘O’ Anusandhan, Bhubaneswar 751030, India
| |
Collapse
|
249
|
Wang N, Ma L, Wang J, Zhang Y, Jiang R. Graphitic Carbon Nitride (g‐C
3
N
4
) Supported Palladium Species: An Efficient Heterogeneous Photocatalyst Surpassing Homogeneous Thermal Heating Systems for Suzuki Coupling. Chempluschem 2019; 84:1164-1168. [DOI: 10.1002/cplu.201900360] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/07/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Nan Wang
- Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and EngineeringShaanxi Normal University Xi'an 710119 P. R. China
| | - Lixia Ma
- Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and EngineeringShaanxi Normal University Xi'an 710119 P. R. China
| | - Jing Wang
- Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and EngineeringShaanxi Normal University Xi'an 710119 P. R. China
| | - Yanpei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and EngineeringShaanxi Normal University Xi'an 710119 P. R. China
| | - Ruibin Jiang
- Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and EngineeringShaanxi Normal University Xi'an 710119 P. R. China
| |
Collapse
|
250
|
Polymeric structure optimization of g-C 3N 4 by using confined argon-assisted highly-ionized ammonia plasma for improved photocatalytic activity. J Colloid Interface Sci 2019; 556:214-223. [PMID: 31445449 DOI: 10.1016/j.jcis.2019.08.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/08/2019] [Accepted: 08/09/2019] [Indexed: 11/23/2022]
Abstract
The optimization of the polymeric structure and the modulation of surface amino groups in graphitic carbon nitride (g-CN) are critical but challenging in improving the photoelectric and photocatalytic performances of this polymer semiconductor. Ammonia plasma treatment may provide a fast and useful approach to optimize g-CN materials yet is seriously restricted by the low ionization ability of ammonia. Herein, a confined fast and environmental-friendly ammonia plasma method based on argon-assisted high ionization of NH3 was developed for efficient modification of raw g-CN. Compared with the weakly-ionized pure ammonia plasma which can only introduce amino group onto the surface g-CN, the argon-assisted highly-ionized ammonia plasma treatment obviously contributes to the comprehensively polymeric structure optimization of g-CN, and thus plays a key role in enhancing its light-harvesting and decelerating the recombination of the photogenerated charge carriers. As a result, the argon-assisted highly-ionized ammonia plasma-treated g-CN-Ar+NH3 outperformed the raw g-CN by a 2.5-fold higher photocatalytic reduction of hexavalent chromium and a remarkable 3.8-fold higher photocatalytic H2 evolution activity (up to 957.8 μmol·h-1·g-1) under visible light irradiation. Our findings suggest the great prospects of this novel highly-ionized ammonia plasma treatment method in the controllable modification of semiconductors and polymers.
Collapse
|