1
|
Ren Z, Ma H, Geng J, Liu C, Song C, Lv Y. ZnO QDs/GO/g-C 3N 4 Preparation and Photocatalytic Properties of Composites. MICROMACHINES 2023; 14:1501. [PMID: 37630037 PMCID: PMC10456475 DOI: 10.3390/mi14081501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/14/2023] [Accepted: 07/21/2023] [Indexed: 08/27/2023]
Abstract
Using an ultrasound-assisted chemical technique, ZnO quantum dot and ZnO composites were created. The optical characteristics and structural details of these composites were examined using TEM, XRD, XPS, FT-IR, UV-vis, and BET. The results revealed that both the ZnO quantum dot composite and ZnO composite exhibited outstanding optical properties, making them suitable for photocatalytic reactions. In order to analyze the photocatalytic performance, a degradation experiment was conducted using Rhodamine B solution as the simulation dye wastewater. The experiment demonstrated that the degradation of Rhodamine B followed the first-order reaction kinetics equation when combined with the photocatalytic reaction kinetics. Moreover, through cyclic stability testing, it was determined that the ZnO QDs-GO-g-C3N4 composite sample showed good stability and could be reused. The degradation rates of Rhodamine B solution using ZnO-GO-g-C3N4 and ZnO QDs-GO-g-C3N4 reached 95.25% and 97.16%, respectively. Furthermore, free-radical-trapping experiments confirmed that ·O2- was the main active species in the catalytic system and its photocatalytic mechanism was elucidated. The photocatalytic oxidation of ZnO quantum dots in this study has important reference value and provides a new idea for the subsequent research.
Collapse
Affiliation(s)
- Zhixin Ren
- College of Pharmacy, Jiamusi University, Jiamusi 154000, China
| | - Huachao Ma
- College of Pharmacy, Jiamusi University, Jiamusi 154000, China
| | - Jianxin Geng
- College of Pharmacy, Jiamusi University, Jiamusi 154000, China
| | - Cuijuan Liu
- College of Pharmacy, Jiamusi University, Jiamusi 154000, China
| | - Chaoyu Song
- College of Pharmacy, Jiamusi University, Jiamusi 154000, China
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuguang Lv
- College of Pharmacy, Jiamusi University, Jiamusi 154000, China
| |
Collapse
|
2
|
Jin H, Guo Y, Zhao J, Bei Y, Wu Z, Shang Q. Oxygen vacancy construction and in situ reduction of metal ions to enhance the photocatalytic performance of Bi5Nb3O15. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
3
|
Porous Defective Bi/Bi3NbO7 Nanosheets for Efficient Photocatalytic NO Removal under Visible Light. Processes (Basel) 2022. [DOI: 10.3390/pr11010115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Since conventional techniques are ineffective for NO removal at low concentrations, photocatalysis has become attractive in this regard, recently. However, in practice, photocatalytic NO removal has drawbacks such as limited light absorption and the proclivity of producing toxic by-products. To address these issues, novel defective Bi/Bi3NbO7 structures with good porosity were fabricated by a solvothermal method and used for enhanced photocatalytic NO removal under visible light irradiation. The morphological and structural properties of the prepared materials were comprehensively analyzed. The optimal photocatalytic activity of pore-defective Bi/Bi3NbO7 for NO removal was 60.3%, when the molar ratios of urea and Bi(NO)3•5H2O to pristine Bi3NbO7 were 1:25 and 1:2, respectively, under the following operational conditions: NO concentration of 700 ppb, catalyst dosage of 50 mg and irradiation time of 14 min. The induced defects and the surface plasmon resonance (SPR) effect of Bi nanodots made remarkable contributions to improving the photocatalytic NO removal as well as inhibiting the toxic byproduct NO2. The photocatalytic NO removal pathway over the prepared photocatalysts was further mechanistically clarified taking advantage of EPR results and scavenging experiments. Considering the increased NO generation in the atmosphere, this work may provide novel insights for designing effective porous photocatalysts to treat gaseous toxic pollutants.
Collapse
|
4
|
Lv J, Xu L, Zhao Z, Sun G. Novel Double Z-Scheme Heterojunction g-C3N4/BiNbO4@AgI Composite Catalyst with Good Response to Visible Light. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422130064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
5
|
Hussain A, Lin C, Cheruiyot NK, Huang WY, Lin KS, Hussain A. Bismuth Sulfide Doped in Graphitic Carbon Nitride Degrades Nitric Oxide under Solar Irradiation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3482. [PMID: 36234617 PMCID: PMC9565360 DOI: 10.3390/nano12193482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 09/29/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
This study developed and examined the application of bismuth sulfide doped on graphitic carbon nitride (Bi2S3@g-C3N4) in the degradation of NO under solar irradiation. Bi2S3@g-C3N4 was prepared through the calcination method. The morphological structure and chemical properties of the synthesized photocatalyst were analyzed before the degradation tests. After doping with Bi2S3@g-C3N4, the bandgap was reduced to 2.76 eV, which increased the absorption of solar light. As a result, the Bi2S3@g-C3N4 achieved higher NO degradation (55%) compared to pure Bi2S3 (35%) and g-C3N4 (45%). The trapping test revealed that the electrons were the primary species responsible for most of the NO degradation. The photocatalyst was stable under repeated solar irradiation, maintaining degradation efficiencies of 50% after five consecutive recycling tests. The present work offers strong evidence that Bi2S3@g-C3N4 is a stable and efficient catalyst for the photocatalytic oxidation of NO over solar irradiation.
Collapse
Affiliation(s)
- Adnan Hussain
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 811213, Taiwan
| | - Chitsan Lin
- Ph.D. Program in Maritime Science and Technology, College of Maritime, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Nicholas Kiprotich Cheruiyot
- Super Micro Mass Research and Technology Center, Cheng Shiu University, Kaohsiung City 8333031, Taiwan
- Center for Environmental Toxin and Emerging-Contaminant Research, Cheng Shiu University, Kaohsiung City 8333031, Taiwan
| | - Wen-Yen Huang
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Kuen-Song Lin
- Department of Chemical Engineering and Materials Science, Environmental Technology Research Center, Yuan Ze University, Taoyuan City 32003, Taiwan
| | - Abrar Hussain
- Department of Chemical Engineering and Materials Science, Environmental Technology Research Center, Yuan Ze University, Taoyuan City 32003, Taiwan
| |
Collapse
|
6
|
Vadivel S, Fujii M, Rajendran S. Novel S-scheme 2D/2D Bi 4O 5Br 2 nanoplatelets/g-C 3N 5 heterojunctions with enhanced photocatalytic activity towards organic pollutants removal. ENVIRONMENTAL RESEARCH 2022; 213:113736. [PMID: 35750121 DOI: 10.1016/j.envres.2022.113736] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/12/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
Removal of organic pollutants and pharma products in waste water using semiconductor photocatalysts has gained huge interest among recent days. However, low visible light absorption, recombination rate of charge carriers and less availability of reaction sites are still major obstacles for the photocatalysis process. Herein, an in situ-forming Bi4O5Br2 nanosheets decorated on the surface g-C3N5 were prepared via simple hydrothermal method under ambient temperature. The basic pH condition plays a vital role in growing for Bi4O5Br2 nanosheets. Various characterization studies such as TEM, SEM, PL and UV-DRS studies confirmed the formation of close contact between the Bi4O5Br2 and g-C3N5 nanosheets. The construction of Bi4O5Br2 nanoplatelets/g-C3N5 nanocomposite increases the surface-active sites and improving the separation efficiencies of excitons, which is greatly influenced in the degradation of ciprofloxacin and bisphenol-A pollutants. Meanwhile, the flow of electrons from the layered structured graphite carbon of g-C3N5 which enables excellent electrical contact in the heterojunction. Besides, the main free radicals were determined as e- and •O2-, and production level of free radicals were confirmed by radical trapping experiments. The possible degradation mechanism was proposed and discussed. Finally, this work provides a unique approach to in-situ preparation of heterojunction photocatalysts and demonstrates the prepared Bi4O5Br2 nanoplatelets/g-C3N5 photocatalysts have great potential in the waste water management.
Collapse
Affiliation(s)
- Sethumathavan Vadivel
- Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Manabu Fujii
- Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Saravanan Rajendran
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez, 1775, Arica, Chile
| |
Collapse
|
7
|
Cruz ÁB, Francisco de Carvalho R, Silva TS, de Almeida Sarmento R, Cavallini GS, Pereira DH. Adsorptive capacity of a g-C3N4 matrix for thiamethoxam removal: A DFT study. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
8
|
Kobkeatthawin T, Chaveanghong S, Trakulmututa J, Amornsakchai T, Kajitvichyanukul P, Smith SM. Photocatalytic Activity of TiO 2/g-C 3N 4 Nanocomposites for Removal of Monochlorophenols from Water. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2852. [PMID: 36014720 PMCID: PMC9414261 DOI: 10.3390/nano12162852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
This research employed g-C3N4 nanosheets in the hydrothermal synthesis of TiO2/g-C3N4 hybrid photocatalysts. The TiO2/g-C3N4 heterojunctions, well-dispersed TiO2 nanoparticles on the g-C3N4 nanosheets, are effective photocatalysts for the degradation of monochlorophenols (MCPs: 2-CP, 3-CP, and 4-CP) which are prominent water contaminants. The removal efficiency of 2-CP and 4-CP reached 87% and 64%, respectively, after treatment of 25 ppm CP solutions with the photocatalyst (40TiO2/g-C3N4, 1 g/L) and irradiation with UV-Vis light. Treatment of CP solutions with g-C3N4 nanosheets or TiO2 alone in conjunction with irradiation gave removal efficiencies lower than 50%, which suggests the two act synergically to enhance the photocatalytic activity of the 40TiO2/g-C3N4 nanocomposite. Superoxide and hydroxyl radicals are key active species produced during CP photodegradation. In addition, the observed nitrogen and Ti3+ defects and oxygen vacancies in the TiO2/g-C3N4 nanocomposites may improve the light-harvesting ability of the composite and assist preventing rapid electron-hole recombination on the surface, enhancing the photocatalytic performance. In addition, interfacial interactions between the MCPs (low polarity) and thermally exfoliated carbon nitride in the TiO2/g-C3N4 nanocomposites may also enhance MCP degradation.
Collapse
Affiliation(s)
- Thawanrat Kobkeatthawin
- Center of Sustainable Energy and Green Materials and Department of Chemistry, Faculty of Science, Mahidol University, 999 Phuttamonthon Sai 4 Road, Salaya, Nakhon Pathom 73170, Thailand
| | - Suwilai Chaveanghong
- Center of Sustainable Energy and Green Materials and Department of Chemistry, Faculty of Science, Mahidol University, 999 Phuttamonthon Sai 4 Road, Salaya, Nakhon Pathom 73170, Thailand
| | - Jirawat Trakulmututa
- Center of Sustainable Energy and Green Materials and Department of Chemistry, Faculty of Science, Mahidol University, 999 Phuttamonthon Sai 4 Road, Salaya, Nakhon Pathom 73170, Thailand
| | - Taweechai Amornsakchai
- Center of Sustainable Energy and Green Materials and Department of Chemistry, Faculty of Science, Mahidol University, 999 Phuttamonthon Sai 4 Road, Salaya, Nakhon Pathom 73170, Thailand
- Center of Excellence for Innovation in Chemistry, 272 Rama VI Road, Rajthevi, Bangkok 10400, Thailand
| | - Puangrat Kajitvichyanukul
- Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai 50200, Thailand
- Sustainable Engineering Research Center for Pollution and Environmental Management, Faculty of Engineering, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai 50200, Thailand
| | - Siwaporn Meejoo Smith
- Center of Sustainable Energy and Green Materials and Department of Chemistry, Faculty of Science, Mahidol University, 999 Phuttamonthon Sai 4 Road, Salaya, Nakhon Pathom 73170, Thailand
| |
Collapse
|
9
|
Subhiksha V, Kokilavani S, Sudheer Khan S. Recent advances in degradation of organic pollutant in aqueous solutions using bismuth based photocatalysts: A review. CHEMOSPHERE 2022; 290:133228. [PMID: 34896424 DOI: 10.1016/j.chemosphere.2021.133228] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/25/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Today, a major concern associated with the environment is the water pollution occurred due to the introduction of variety of persistent organic pollutants and residual dyes from different sources (e.g., dye and dye intermediates industries, paper and pulp industries, textile industries, tannery and craft bleaching industries, pharmaceutical industries, etc.) into our natural water resources. Recently, advanced oxidation processes (AOPs) by photocatalyst have garnered great attention as a new frontier promising eco-friendly and sustainable wastewater treatment technology. Utilization of the photocatalytic technology efficiently is significant for cleaner environment. Bismuth based photocatalyst have aroused widespread attention as a visible light responsive photocatalyst for waste water treatment due to their non-toxicity, low cost, modifiable morphology, and outstanding optical and chemical properties. In this review, we have dealt with the research progress on bismuth-based photocatalysts for waste water treatment. However, it seems to give limitation over pristine photocatalysts such as slow migration of charge carriers, charge carrier recombination, low visible light absorption, etc., Various bismuth based photocatalyst and its modifications via doping, heterojunction, Z-scheme etc., are discussed in detail. Further, the strategies adopted to improve the photocatalytic activity of bismuth based photocatalyst to improve the waste water treatment (mostly drugs and dyes) are critically reviewed. Also, we have discussed the bacterial inactivation by bismuth based photocatalyst. Finally, the challenges and future aspects against bismuth based photocatalyst are explored for further research.
Collapse
Affiliation(s)
- V Subhiksha
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - S Kokilavani
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - S Sudheer Khan
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India.
| |
Collapse
|
10
|
Adeel M, Saeed M, Khan I, Muneer M, Akram N. Synthesis and Characterization of Co-ZnO and Evaluation of Its Photocatalytic Activity for Photodegradation of Methyl Orange. ACS OMEGA 2021; 6:1426-1435. [PMID: 33490802 PMCID: PMC7818618 DOI: 10.1021/acsomega.0c05092] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/29/2020] [Indexed: 05/20/2023]
Abstract
Photocatalysis is one of the techniques used for the eradication of organic pollutants from wastewater. In this study, Co-ZnO was tested as a photocatalyst for the degradation of methyl orange under irradiation of visible light. Co-ZnO loaded with 5%, 10%, and 15% Co was prepared by the precipitation method. The advanced techniques including X-ray diffraction, X-ray photoelectron spectroscopy, diffuse reflectance UV-visible spectroscopy, photoelectrochemical measurements, temperature-programmed desorption, photoluminescence, and fluorescence spectroscopy related to OH• measurements were used for characterization of prepared Co-ZnO. Experiments showed that 10% Co-ZnO was a highly efficient catalyst for the photodegradation of methyl orange as compared to ZnO. The enhanced photocatalytic activity of Co-ZnO is attributed to the implantation of Co which inhibits the electron-hole recombination. A 100 mg/L solution of methyl orange dye was completely degraded within 130 min. The reaction kinetics has been described in terms of the Eley-Rideal mechanism.
Collapse
Affiliation(s)
- Muhammad Adeel
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Saeed
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad 38000, Pakistan
- . Phone: +92 346 9010903
| | - Iltaf Khan
- College
of Chemical and Materials Engineering, Beijing
Institute of Petrochemical Technology, Beijing 102617, China
| | - Majid Muneer
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad 38000, Pakistan
| | - Nadia Akram
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad 38000, Pakistan
| |
Collapse
|
11
|
Robust Z-scheme g-C3N4/WO3 heterojunction photocatalysts with morphology control of WO3 for efficient degradation of phenolic pollutants. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117693] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
12
|
Fabrication of CQDs/Bi5Nb3O15 nanocomposites for photocatalytic degradation of veterinary pharmaceutical sarafloxacin. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
13
|
Roy S. Tale of Two Layered Semiconductor Catalysts toward Artificial Photosynthesis. ACS APPLIED MATERIALS & INTERFACES 2020; 12:37811-37833. [PMID: 32805975 DOI: 10.1021/acsami.0c11245] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The ever-increasing reliance on nonrenewable fossil fuels due to massive urbanization and industrialization created problems such as depletion of the primary feedstock and raised the atmospheric CO2 levels causing global warming. A smart and promising approach is artificial photosynthesis that photocatalytically valorizes CO2 into high-value chemicals. The inexpensive layered semiconductors like g-C3N4 and rGO or GO have the potential to make the process practically feasible for real applications. The suitable band positions with respect to the reduction potentials coupled with the typical surface properties of these layered semiconductors play a beneficial role in photoreduction of CO2. Additionally, the creation of heterojunction interfaces to achieve the Z-scheme by anchoring g-C3N4 and rGO with another semiconductor with proper band alignment and dispersing plasmonic nano metals to obtain Schottky barriers on the layered surfaces also help retarding the electron-hole recombination and boost up the catalytic efficacy. Extensive exploration happened in recent years toward artificial photosynthesis over these materials, which needs a critical compendium. Surprisingly, in spite of the recent explosion of studies on photocatalytic reduction of CO2 over metal-free semiconductors, there is not a single review on comparing the mechanistic aspects of photoreduction of CO2 over the layered semiconductors g-C3N4 and rGO. This review stands out as a unique documentation, where the mechanism of photocatalytic reduction of CO2 over this set of materials is critically examined in the context of band and surface modifications. An overall conclusion and outlook at the end indicates the need to develop prototypes for artificial photosynthesis with these well-studied semiconducting layered materials to yield solar fuels.
Collapse
Affiliation(s)
- Sounak Roy
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad 500078, India
| |
Collapse
|
14
|
Kuznetsova M, Oliveira SAA, Rodrigues BS, Souza JS. Microwave-Assisted Synthesis of Bismuth Niobate/Tungsten Oxide Photoanodes for Water Splitting. Top Catal 2020. [DOI: 10.1007/s11244-020-01325-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
15
|
Si YH, Chen WM, Shang SK, Xia Y, Zeng XR, Zhou J, Li YY. g-C 3N 4/Pt/BiVO 4 nanocomposites for highly efficient visible-light photocatalytic removal of contaminants and hydrogen generation. NANOTECHNOLOGY 2020; 31:125706. [PMID: 31770738 DOI: 10.1088/1361-6528/ab5bc5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Inspired by natural photosynthesis, artificial heterojunction photocatalysts have been extensively studied. Herein, a novel ternary graphitic carbon nitride/platinum/bismuth vanadate (g-C3N4/Pt/BiVO4) photocatalytic system was successfully synthesized, where Pt/BiVO4 nanosheet is anchored on the surface of layered g-C3N4, as evidenced by structural observations. Ultraviolet photoelectron spectroscopy and ultraviolet-visible diffuse reflectance spectroscopy are carried out to identify the position of the conduction band and valence band. A Z-scheme is used to interpret the superior photocatalytic performance of g-C3N4/Pt/BiVO4 and further verified by the capture of free radicals and terephthalic acid photoluminescence experiments. Compared with the g-C3N4/BiVO4 binary system, the Z-scheme g-C3N4/Pt/BiVO4 photocatalyst not only possesses enhanced carrier separation efficiency but also maintains sufficient redox properties, thus inducing superior photocatalytic activity. More importantly, the novel Z-scheme photocatalyst exhibits excellent recycle stability, which could provide inspiration for the rational design of efficient and practical photocatalysts for environmental pollution treatment. The ternary photocatalyst also exhibits significantly enhanced visible-light photocatalytic hydrogen production performance.
Collapse
Affiliation(s)
- Yun-Hui Si
- Shenzhen Key Laboratory of Special Functional Materials, Shenzhen Engineering Laboratory for Advanced Technology of Ceramics, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
16
|
Das K, Majhi D, Bariki R, Mishra BG. SnS
2
/Bi
4
Ti
3
O
12
Heterostructure Material: A UV‐Visible Light Active Direct Z‐Scheme Photocatalyst for Aqueous Phase Degradation of Diazinon. ChemistrySelect 2020. [DOI: 10.1002/slct.201904532] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Krishnendu Das
- Department of ChemistryNational Institute of Technology Rourkela 769008, Odisha India
| | - Dibyananda Majhi
- Department of ChemistryNational Institute of Technology Rourkela 769008, Odisha India
| | - Ranjit Bariki
- Department of ChemistryNational Institute of Technology Rourkela 769008, Odisha India
| | - Braja G. Mishra
- Department of ChemistryNational Institute of Technology Rourkela 769008, Odisha India
| |
Collapse
|
17
|
Jo YK, Lee JM, Son S, Hwang SJ. 2D inorganic nanosheet-based hybrid photocatalysts: Design, applications, and perspectives. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2018.03.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
18
|
2D/2D Z-scheme heterojunction of CuInS2/g-C3N4 for enhanced visible-light-driven photocatalytic activity towards the degradation of tetracycline. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.08.055] [Citation(s) in RCA: 178] [Impact Index Per Article: 35.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
19
|
Li Z, Xiong N, Gu G. Fabrication of a full-spectrum-response Cu2(OH)2CO3/g-C3N4 heterojunction catalyst with outstanding photocatalytic H2O2 production performance via a self-sacrificial method. Dalton Trans 2019; 48:182-189. [DOI: 10.1039/c8dt04081h] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Over the past few decades, near infrared light (NIR), as an important part of sunlight, has seldom been utilized in photocatalytic reactions.
Collapse
Affiliation(s)
- Zheng Li
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| | - Nanni Xiong
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| | - Guizhou Gu
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| |
Collapse
|
20
|
Sunasee S, Leong KH, Wong KT, Lee G, Pichiah S, Nah I, Jeon BH, Yoon Y, Jang M. Sonophotocatalytic degradation of bisphenol A and its intermediates with graphitic carbon nitride. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:1082-1093. [PMID: 28290089 DOI: 10.1007/s11356-017-8729-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 02/28/2017] [Indexed: 06/06/2023]
Abstract
Since bisphenol A (BPA) exhibits endocrine disrupting action and high toxicity in aqueous system, there are high demands to remove it completely. In this study, the BPA removal by sonophotocatalysis coupled with nano-structured graphitic carbon nitride (g-C3N4, GCN) was conducted with various batch tests using energy-based advanced oxidation process (AOP) based on ultrasound (US) and visible light (Vis-L). Results of batch tests indicated that GCN-based sonophotocatalysis (Vis-L/US) had higher rate constants than other AOPs and especially two times higher degradation rate than TiO2-based Vis-L/US. This result infers that GCN is effective in the catalytic activity in Vis-L/US since its surface can be activated by Vis-L to transport electrons from valence band (VB) for utilizing holes (h+VB) in the removal of BPA. In addition, US irradiation exfoliated the GCN effectively. The formation of BPA intermediates was investigated in detail by using high-performance liquid chromatography-mass spectrometry (HPLC/MS). The possible degradation pathway of BPA was proposed.
Collapse
Affiliation(s)
- Sharmini Sunasee
- Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kah Hon Leong
- Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900, Kampar, Perak, Malaysia
| | - Kien Tiek Wong
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea
| | - Gooyong Lee
- Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Saravanan Pichiah
- Department of Environmental Science & Engineering, Indian Institute of Technology (ISM) Dhanbad, Dhanbad, Jharkhand, -826004, India
| | - InWook Nah
- Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC, 29208, USA
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea.
| |
Collapse
|
21
|
Lee G, Chu KH, Al-Hamadani YAJ, Park CM, Jang M, Heo J, Her N, Kim DH, Yoon Y. Fabrication of graphene-oxide/β-Bi 2O 3/TiO 2/Bi 2Ti 2O 7 heterojuncted nanocomposite and its sonocatalytic degradation for selected pharmaceuticals. CHEMOSPHERE 2018; 212:723-733. [PMID: 30179837 DOI: 10.1016/j.chemosphere.2018.08.137] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/22/2018] [Accepted: 08/27/2018] [Indexed: 06/08/2023]
Abstract
A graphene-oxide (GO)/β-Bi2O3/TiO2/Bi2Ti2O7 heterojuncted nanocomposite, designated as GBT, was synthesized via a two-step hydrothermal process. The sonocatalytic activity of the GBT was evaluated at several frequencies (28, 580, and 970 kHz) and compared with Bi-doped GO (GB) and Ti-doped GO (GT). Transmission electron microscopy images showed heterojuncted crystal structures of Bi and Ti on GO, and X-ray diffraction patterns verified that the crystal structures consisted of β-Bi2O3, TiO2, and Bi2Ti2O7 nanocomposites. Energy-dispersive X-ray spectroscopy revealed a higher proportion of metal on GBT surfaces compared with GB and GT surfaces. The energy band gaps of GT, GB, and GBT were 3.0, 2.8, and 2.5 eV, respectively. Two pharmaceuticals (PhACs; carbamazepine [CBZ] and acetaminophen [ACE]) were selected and treated under sonolytic conditions at frequencies of 28, 580, and 970 kHz at a power level of 180 W L-1. The selected pharmaceuticals, present at initial concentrations of 20 μM, were reduced by over 99% by ultrasonic irradiation in the presence of GBT. The 580 kHz treatment achieved the most rapid organic removal among the frequencies tested. The removal kinetic of CBZ was higher than that of ACE owing to its relatively high hydrophobicity. High sonocatalytic activity of GBT was observed through measurement of H2O2 in solution. Because of its low band gaps and high surface activity, GBT exhibited higher sonolytic activity in removing selected PhACs than GT or GB.
Collapse
Affiliation(s)
- Gooyong Lee
- Green Technology Center, NamsanSquare Bldg., 173, Toegye-ro, Jung-gu, Seoul, 04554, Republic of Korea
| | - Kyoung Hoon Chu
- School of Civil, Environmental and Architectural Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Yasir A J Al-Hamadani
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC, 29208, USA
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 447-1Wolgye-Dong Nowon-Gu, Seoul, 01897, Republic of Korea
| | - Jiyong Heo
- Department of Civil and Environmental Engineering, Korea Army Academy at Young-cheon, 495 Hogook-ro, Kokyungmeon, Young-Cheon, Gyeongbuk, 38900, Republic of Korea
| | - Namguk Her
- Department of Civil and Environmental Engineering, Korea Army Academy at Young-cheon, 495 Hogook-ro, Kokyungmeon, Young-Cheon, Gyeongbuk, 38900, Republic of Korea
| | - Do-Hyung Kim
- Korea Environmental Industry & Technology Institute, 215 Jinheungno, Eunpyeong-gu, Seoul, Republic of Korea.
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC, 29208, USA.
| |
Collapse
|
22
|
Devi M, Ganguly S, Bhuyan B, Dhar SS, Vadivel S. A Novel [Fe(acac)
3
] Interspersed g‐C
3
N
4
Heterostructure for Environmentally Benign Visible‐Light‐Driven Oxidation of Alcohols. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801092] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Meghali Devi
- Department of Chemistry National Institute of Technology 788010 Silchar, Cachar Assam India
| | - Sreejeeb Ganguly
- Department of Chemistry National Institute of Technology 788010 Silchar, Cachar Assam India
| | - Bishal Bhuyan
- Department of Chemistry National Institute of Technology 788010 Silchar, Cachar Assam India
| | - Siddhartha Sankar Dhar
- Department of Chemistry National Institute of Technology 788010 Silchar, Cachar Assam India
| | - Sethumathavan Vadivel
- Department of Chemistry PSG College of Technology Peelamedu 641004 Coimbatore Tamil Nadu India
| |
Collapse
|
23
|
Tho NTM, Huy BT, Khanh DNN, Ha HNN, Huy VQ, Vy NTT, Huy DM, Dat DP, Phuong NTK. Facile synthesis of ZnBi2O4-graphite composites as highly active visible-light photocatalyst for the mineralization of rhodamine B. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-018-0156-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
24
|
Alias NH, Jaafar J, Samitsu S, Yusof N, Othman MHD, Rahman MA, Ismail AF, Aziz F, Salleh WNW, Othman NH. Photocatalytic degradation of oilfield produced water using graphitic carbon nitride embedded in electrospun polyacrylonitrile nanofibers. CHEMOSPHERE 2018; 204:79-86. [PMID: 29653325 DOI: 10.1016/j.chemosphere.2018.04.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 02/25/2018] [Accepted: 04/05/2018] [Indexed: 06/08/2023]
Abstract
Separation and purification of oilfield produced water (OPW) is a major environmental challenge due to the co-production of the OPW during petroleum exploration and production operations. Effective capture of oil contaminant and its in-situ photodegradation is one of the promising methods to purify the OPW. Based on the photocatalytic capability of graphitic carbon nitride (GCN) which was recently rediscovered, photodegradation capability of GCN for OPW was investigated in this study. GCN was synthesized by calcination of urea and further exfoliated into nanosheets. The GCNs were incorporated into polyacrylonitrile nanofibers using electrospinning, which gave a liquid-permeable self-supporting photocatalytic nanofiber mat that can be handled by hand. The photocatalytic nanofiber demonstrated 85.4% degradation of OPW under visible light irradiation, and improved the degradation to 96.6% under UV light. Effective photodegradation of the photocatalytic nanofiber for OPW originates from synergetic effects of oil adsorption by PAN nanofibers and oil photodegradation by GCNs. This study provides an insight for industrial application on purification of OPW through photocatalytic degradation under solar irradiation.
Collapse
Affiliation(s)
- Nur Hashimah Alias
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia; Department of Oil and Gas Engineering, Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Juhana Jaafar
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
| | - Sadaki Samitsu
- Data driven Polymer Design Group, Center for Materials Research by Information Integration, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Norhaniza Yusof
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Mukhlis A Rahman
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Farhana Aziz
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Wan Norharyati Wan Salleh
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Nur Hidayati Othman
- Department of Oil and Gas Engineering, Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| |
Collapse
|
25
|
Huang D, Yan X, Yan M, Zeng G, Zhou C, Wan J, Cheng M, Xue W. Graphitic Carbon Nitride-Based Heterojunction Photoactive Nanocomposites: Applications and Mechanism Insight. ACS APPLIED MATERIALS & INTERFACES 2018; 10:21035-21055. [PMID: 29856204 DOI: 10.1021/acsami.8b03620] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The design of heterojunction with superior performance of light absorption and appropriate conduction band and valence band potentials is a promising approach for the applications in efficient environmental remediation and the solar energy storage. In recent years, many studies have been devoted to the applications of graphitic carbon nitride (g-C3N4)-based heterojunction photoactive nanomaterials under visible light irradiation due to its excellent physical, optical, and electrical properties, which inspired us to compile this review. Although many reviews demonstrated about the syntheses and applications of g-C3N4 composites, a targeted review on the systematic application and photocatalytic mechanisms of g-C3N4-based heterojunction, in which components are in intimate linkage with each other rather than a physical mixture, is still absent. In this review, the applications of g-C3N4-based heterojunction photoactive nanomaterials in environmental remediation and solar energy storage, such as photocatalytic treatment of persistent organic pollutants, heavy-metal-ion redox, oxidative decomposition of pathogens, water splitting for H2 evolution, and CO2 reduction, are systematically discussed. In addition, some emerging applications, such as solar cells and biosensors, are also introduced. Meanwhile, a comprehensive assessment on the basis of first-principles calculations and the thermodynamics and kinetics of surface catalytic reaction for the electronic structure and photocatalytic properties of g-C3N4-based heterojunction are valued by this review. In the end, a brief summary and perspectives in designing practical heterojunction photoactive nanomaterials also showed the bright future of g-C3N4-based heterojunction. Altogether, this review systematically complements the information that previous reviews have frequently ignored and points out the future development trends of g-C3N4-based heterojunction, which expected to provide important references and right directions for the development and practical applications of g-C3N4-based heterojunction photoactive nanomaterials.
Collapse
Affiliation(s)
- Danlian Huang
- College of Environmental Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- Key Laboratory of Environmental Biology and Pollution Control , Hunan University, Ministry of Education , Changsha , Hunan 410082 , China
| | - Xuelei Yan
- College of Environmental Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- Key Laboratory of Environmental Biology and Pollution Control , Hunan University, Ministry of Education , Changsha , Hunan 410082 , China
| | - Ming Yan
- College of Environmental Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- Key Laboratory of Environmental Biology and Pollution Control , Hunan University, Ministry of Education , Changsha , Hunan 410082 , China
| | - Guangming Zeng
- College of Environmental Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- Key Laboratory of Environmental Biology and Pollution Control , Hunan University, Ministry of Education , Changsha , Hunan 410082 , China
| | - Chengyun Zhou
- College of Environmental Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- Key Laboratory of Environmental Biology and Pollution Control , Hunan University, Ministry of Education , Changsha , Hunan 410082 , China
| | - Jia Wan
- College of Environmental Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- Key Laboratory of Environmental Biology and Pollution Control , Hunan University, Ministry of Education , Changsha , Hunan 410082 , China
| | - Min Cheng
- College of Environmental Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- Key Laboratory of Environmental Biology and Pollution Control , Hunan University, Ministry of Education , Changsha , Hunan 410082 , China
| | - Wenjing Xue
- College of Environmental Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- Key Laboratory of Environmental Biology and Pollution Control , Hunan University, Ministry of Education , Changsha , Hunan 410082 , China
| |
Collapse
|
26
|
Lee G, Ibrahim S, Kittappa S, Park H, Park CM. Sonocatalytic activity of a heterostructured β-Bi 2O 3/Bi 2O 2CO 3 nanoplate in degradation of bisphenol A. ULTRASONICS SONOCHEMISTRY 2018; 44:64-72. [PMID: 29680629 DOI: 10.1016/j.ultsonch.2018.02.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 02/05/2018] [Accepted: 02/06/2018] [Indexed: 06/08/2023]
Abstract
Novel heterostructured β-Bi2O3/Bi2O2CO3 nanoplates (hBN) were synthesized to observe the sonocatalytic degradation of bisphenol A (BPA) (widely used as a model pollutant) under ultrasonic (US) irradiation. Prior to obtaining the hBN, the Bi2O2CO3 micropowder precursor was prepared under hydrothermal conditions and then converted to hBN by increasing the calcination temperature to 300 °C. The synthesized hBN samples were characterized by field emission scanning electron microscope with energy dispersive X-ray analysis (FESEM/EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), ultraviolet-visible spectrophotometer diffuse reflection spectroscopy (UV-vis DRS), and X-ray photoelectron spectroscopy (XPS). The hBN/US system exhibited greater sonocatalytic activity for the degradation of BPA than the US treatment with the single element bismuth oxide, β-Bi2O3 prepared by annealing the Bi2O2CO3 precursor at 400 °C for 1 h. The US frequency and US power intensity in the hBN/US system were the key operating parameters, which were responsible for the complete degradation of BPA during 6 h of reactions. The degradation efficiency of BPA under the US irradiation was positively correlated with the dose of hBN. Our findings indicate that heterostructured hBN can be used as an efficient sonocatalyst for the catalytic degradation of BPA in water and wastewater treatment.
Collapse
Affiliation(s)
- Gooyong Lee
- Department of Civil Engineering, Faculty of Engineering, University of Malaya, Jalan Universiti, Kuala Lumpur 50603, Malaysia
| | - Shaliza Ibrahim
- Department of Civil Engineering, Faculty of Engineering, University of Malaya, Jalan Universiti, Kuala Lumpur 50603, Malaysia
| | - Shanmuga Kittappa
- Department of Civil Engineering, Faculty of Engineering, University of Malaya, Jalan Universiti, Kuala Lumpur 50603, Malaysia
| | - Heekyung Park
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
| |
Collapse
|
27
|
Qu X, Hu S, Bai J, Li P, Lu G, Kang X. A facile approach to synthesize oxygen doped g-C3N4 with enhanced visible light activity under anoxic conditions via oxygen-plasma treatment. NEW J CHEM 2018. [DOI: 10.1039/c7nj04760f] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic oxidation technology for the anoxic removal of organic pollutants that exist under some oxygen-free conditions is attractive but challenging.
Collapse
Affiliation(s)
- Xiaoyu Qu
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| | - Shaozheng Hu
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| | - Jin Bai
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| | - Ping Li
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| | - Guang Lu
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| | - Xiaoxue Kang
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| |
Collapse
|
28
|
Wang Y, Hu S, Li Q, Gu G, Zhao Y, Liang H, Li W. One step synthesis of high-efficiency AgBr–Br–g-C3N4 composite catalysts for photocatalytic H2O2 production via two channel pathway. RSC Adv 2018; 8:36903-36909. [PMID: 35558951 PMCID: PMC9088936 DOI: 10.1039/c8ra07749e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 10/17/2018] [Indexed: 11/29/2022] Open
Abstract
In this work, a two-component modified AgBr–Br–g-C3N4 composite catalyst with outstanding photocatalytic H2O2 production ability is synthesized. XRD, UV-Vis, N2 adsorption, TEM, XPS, EPR and PL were used to characterize the obtained catalysts. The as-prepared AgBr–Br–g-C3N4 composite catalyst shows the highest H2O2 equilibrium concentration of 3.9 mmol L−1, which is 7.8 and 19.5 times higher than that of GCN and AgBr. A “two channel pathway” is proposed for this reaction system which causes the remarkably promoted H2O2 production ability. In addition, compared with another two-component modified catalyst, Ag–AgBr–g-C3N4, AgBr–Br–g-C3N4 composite catalyst displays the higher photocatalytic H2O2 production ability and stability. In this work, a two-component modified AgBr–Br–g-C3N4 composite catalyst with outstanding photocatalytic H2O2 production ability is synthesized.![]()
Collapse
Affiliation(s)
- Yunke Wang
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Shaozheng Hu
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Qiang Li
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Guizhou Gu
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Yanfeng Zhao
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Hongyu Liang
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Wei Li
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| |
Collapse
|
29
|
Bai J, Sun Y, Li M, Yang L, Li J, Hu S. “Two channel” photocatalytic hydrogen peroxide production using g-C3N4 coated CuO nanorod heterojunction catalysts prepared via a novel molten salt-assisted microwave process. NEW J CHEM 2018. [DOI: 10.1039/c8nj02565g] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports g-C3N4 coated CuO nanorod catalysts with outstanding photocatalytic H2O2 production ability via a “two channel pathway”.
Collapse
Affiliation(s)
- Jin Bai
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Yongzhen Sun
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Meiyuan Li
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Lina Yang
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Jian Li
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Shaozheng Hu
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| |
Collapse
|
30
|
Wang H, Fang L, Hu S, Pei Y, Ma W. A green and facile method to prepare graphitic carbon nitride nanosheets with outstanding photocatalytic H2O2 production ability via NaClO hydrothermal treatment. NEW J CHEM 2018. [DOI: 10.1039/c8nj03044h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Transportation and transformation of photogenerated carriers during the photocatalytic process of graphitic carbon nitride (g-C3N4) are restricted by the low surface area and insufficient charge separation efficiency.
Collapse
Affiliation(s)
- Hui Wang
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Lei Fang
- Daqing Chemical Research Center of Petrochemical Research Institute
- PetroChina
- Daqing
- China
| | - Shaozheng Hu
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Yanbo Pei
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Wentao Ma
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| |
Collapse
|
31
|
Chezhina NV, Korolev DA, Fedorova AV, Zhuk NA, Filippova MV, Feltsinger LS, Lutoev VP, Makeev BA, Shevchuk SS, Nizovtsev AN. Structure, magnetic, and electrical properties of bismuth niobates doped with d-elements: XVII.1 Magnetic properties of Bi5Nb3–3xMn3xO15–δ solid solutions. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s1070363217100012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
32
|
Deng J, Liang J, Li M, Tong M. Enhanced visible-light-driven photocatalytic bacteria disinfection by g-C 3 N 4 -AgBr. Colloids Surf B Biointerfaces 2017; 152:49-57. [DOI: 10.1016/j.colsurfb.2017.01.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/27/2016] [Accepted: 01/03/2017] [Indexed: 11/27/2022]
|
33
|
Wu G, Hu S, Han Z, Liu C, Li Q. The effect of Ni(i)–N active sites on the photocatalytic H2O2 production ability over nickel doped graphitic carbon nitride nanofibers. NEW J CHEM 2017. [DOI: 10.1039/c7nj03298f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work provides a strategy to improve the photocatalytic H2O2 production ability by embedding Ni(i)–N sites into the g-C3N4 lattice.
Collapse
Affiliation(s)
- Guang Wu
- College of Chemistry, Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Shaozheng Hu
- College of Chemistry, Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Zheng Han
- College of Chemistry, Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Chuntao Liu
- College of Chemistry, Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Qiang Li
- College of Chemistry, Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| |
Collapse
|
34
|
Liang H, Li J, Tian Y. Construction of full-spectrum-driven Ag–g-C3N4/W18O49 heterojunction catalyst with outstanding N2 photofixation ability. RSC Adv 2017. [DOI: 10.1039/c7ra08420j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ag–g-C3N4/W18O49 heterojunction catalysts display much higher N2 photofixation performance than that of individual W18O49 or Ag–g-C3N4, which is due to the better separation rate of electron–hole pairs and more efficient light utilization.
Collapse
Affiliation(s)
- Hongyu Liang
- School of Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - Jianzhong Li
- School of Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - Yanwen Tian
- School of Metallurgy
- Northeastern University
- Shenyang 110819
- China
| |
Collapse
|
35
|
Liang H, Zou H, Hu S. Preparation of the W18O49/g-C3N4 heterojunction catalyst with full-spectrum-driven photocatalytic N2 photofixation ability from the UV to near infrared region. NEW J CHEM 2017. [DOI: 10.1039/c7nj01848g] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work provides a strategy to improve the quantum efficiency of photocatalysts by promoting near-infrared light utilization.
Collapse
Affiliation(s)
- Hongyu Liang
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| | - He Zou
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| | - Shaozheng Hu
- College of Chemistry
- Chemical Engineering
- and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
| |
Collapse
|
36
|
Zhang F, Duan F, Ding Z, Chen M. Synthesis of Visible-Light-Driven g-C3N4/PPy/Ag Ternary Photocatalyst with Improved Photocatalytic Performance. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600589] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fengli Zhang
- School of Chemical and Material Engineering; Jiangnan University; Wuxi Jiangsu 214122 China
| | - Fang Duan
- School of Chemical and Material Engineering; Jiangnan University; Wuxi Jiangsu 214122 China
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; Jiangnan University; Wuxi Jiangsu 214122 China
| | - Zhigang Ding
- School of Chemical and Material Engineering; Jiangnan University; Wuxi Jiangsu 214122 China
| | - Mingqing Chen
- School of Chemical and Material Engineering; Jiangnan University; Wuxi Jiangsu 214122 China
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; Jiangnan University; Wuxi Jiangsu 214122 China
| |
Collapse
|
37
|
Li L, Hu Y, Deng D, Song H, Lv Y. Highly sensitive cataluminescence gas sensors for 2-butanone based on g-C3N4 sheets decorated with CuO nanoparticles. Anal Bioanal Chem 2016; 408:8831-8841. [DOI: 10.1007/s00216-016-9906-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 08/02/2016] [Accepted: 08/24/2016] [Indexed: 10/21/2022]
|
38
|
Ong WJ, Tan LL, Ng YH, Yong ST, Chai SP. Graphitic Carbon Nitride (g-C3N4)-Based Photocatalysts for Artificial Photosynthesis and Environmental Remediation: Are We a Step Closer To Achieving Sustainability? Chem Rev 2016; 116:7159-329. [DOI: 10.1021/acs.chemrev.6b00075] [Citation(s) in RCA: 4328] [Impact Index Per Article: 541.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Wee-Jun Ong
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Lling-Lling Tan
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Yun Hau Ng
- Particles
and Catalysis Research Group (PARTCAT), School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Siek-Ting Yong
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Siang-Piao Chai
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| |
Collapse
|
39
|
Hu JY, Tian K, Jiang H. Improvement of phenol photodegradation efficiency by a combined g-C3N4/Fe(III)/persulfate system. CHEMOSPHERE 2016; 148:34-40. [PMID: 26802260 DOI: 10.1016/j.chemosphere.2016.01.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 12/08/2015] [Accepted: 01/04/2016] [Indexed: 06/05/2023]
Abstract
Graphite-like C3N4 (g-C3N4) is an efficient visible-light-driven photocatalyst commonly used in dye decolorization with very poor photocatalytic efficiency for degrading recalcitrant organic pollutants, such as phenol. In this study, we designed a g-C3N4/Fe(III)/persulfate system to significantly improve the phenol photodegradation efficacy by combining photocatalysis and light Fenton interaction. The phenol removal ratio and degradation rate of the g-C3N4/Fe(III)/persulfate system are 16.5- and 240-fold higher than those of individual g-C3N4 system. Sulfate radicals [Formula: see text] and H2O2 are detected in the g-C3N4/Fe(III)/persulfate system, suggesting that both radical decomposition and light Fenton interaction play important roles in phenol degradation. The efficient coupled photocatalytic system of g-C3N4 combined with Fe(III) and persulfate shows significant potential for application in large-scale degradation of environmental pollutants.
Collapse
Affiliation(s)
- Jian-Yang Hu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Ke Tian
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Hong Jiang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| |
Collapse
|
40
|
Chen D, Wang Z, Du Y, Yang G, Ren T, Ding H. In situ ionic-liquid-assisted synthesis of plasmonic photocatalyst Ag/AgBr/g-C3N4 with enhanced visible-light photocatalytic activity. Catal Today 2015. [DOI: 10.1016/j.cattod.2015.03.031] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
41
|
Hu S, Wang H, Wang F, Bai J, Zhang L, Kang X, Wu G. Practical Preparation of Carbon Black/Carbon Nitride Compounds and Their Photocatalytic Performance. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shaozheng Hu
- College of Chemistry, Chemical Engineering, and Environmental Engineering; Liaoning Shihua University; Fushun 113001 PR China
| | - Haoying Wang
- College of Chemistry, Chemical Engineering, and Environmental Engineering; Liaoning Shihua University; Fushun 113001 PR China
| | - Fei Wang
- College of Chemistry, Chemical Engineering, and Environmental Engineering; Liaoning Shihua University; Fushun 113001 PR China
| | - Jin Bai
- College of Chemistry, Chemical Engineering, and Environmental Engineering; Liaoning Shihua University; Fushun 113001 PR China
| | - Lei Zhang
- College of Chemistry, Chemical Engineering, and Environmental Engineering; Liaoning Shihua University; Fushun 113001 PR China
| | - Xiaoxue Kang
- College of Chemistry, Chemical Engineering, and Environmental Engineering; Liaoning Shihua University; Fushun 113001 PR China
| | - Guang Wu
- Key Laboratory of Chemical Engineering Processes & Technology for High-efficiency Conversion (College of Heilongjiang Province); School of Chemistry and Materials Sciences, Heilongjiang University; Harbin 150080 China
| |
Collapse
|
42
|
Cao S, Low J, Yu J, Jaroniec M. Polymeric photocatalysts based on graphitic carbon nitride. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:2150-76. [PMID: 25704586 DOI: 10.1002/adma.201500033] [Citation(s) in RCA: 1360] [Impact Index Per Article: 151.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 12/13/2014] [Indexed: 05/19/2023]
Abstract
Semiconductor-based photocatalysis is considered to be an attractive way for solving the worldwide energy shortage and environmental pollution issues. Since the pioneering work in 2009 on graphitic carbon nitride (g-C3N4) for visible-light photocatalytic water splitting, g-C3N4 -based photocatalysis has become a very hot research topic. This review summarizes the recent progress regarding the design and preparation of g-C3N4 -based photocatalysts, including the fabrication and nanostructure design of pristine g-C3N4 , bandgap engineering through atomic-level doping and molecular-level modification, and the preparation of g-C3N4 -based semiconductor composites. Also, the photo-catalytic applications of g-C3N4 -based photocatalysts in the fields of water splitting, CO2 reduction, pollutant degradation, organic syntheses, and bacterial disinfection are reviewed, with emphasis on photocatalysis promoted by carbon materials, non-noble-metal cocatalysts, and Z-scheme heterojunctions. Finally, the concluding remarks are presented and some perspectives regarding the future development of g-C3N4 -based photocatalysts are highlighted.
Collapse
Affiliation(s)
- Shaowen Cao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, PR China
| | | | | | | |
Collapse
|
43
|
Abstract
Graphitic carbon nitride (g-C(3)N(4)), as an intriguing earth-abundant visible light photocatalyst, possesses a unique two-dimensional structure, excellent chemical stability and tunable electronic structure. Pure g-C(3)N(4) suffers from rapid recombination of photo-generated electron-hole pairs resulting in low photocatalytic activity. Because of the unique electronic structure, the g-C(3)N(4) could act as an eminent candidate for coupling with various functional materials to enhance the performance. According to the discrepancies in the photocatalytic mechanism and process, six primary systems of g-C(3)N(4)-based nanocomposites can be classified and summarized: namely, the g-C(3)N(4) based metal-free heterojunction, the g-C(3)N(4)/single metal oxide (metal sulfide) heterojunction, g-C(3)N(4)/composite oxide, the g-C(3)N(4)/halide heterojunction, g-C(3)N(4)/noble metal heterostructures, and the g-C(3)N(4) based complex system. Apart from the depiction of the fabrication methods, heterojunction structure and multifunctional application of the g-C(3)N(4)-based nanocomposites, we emphasize and elaborate on the underlying mechanisms in the photocatalytic activity enhancement of g-C(3)N(4)-based nanocomposites. The unique functions of the p-n junction (semiconductor/semiconductor heterostructures), the Schottky junction (metal/semiconductor heterostructures), the surface plasmon resonance (SPR) effect, photosensitization, superconductivity, etc. are utilized in the photocatalytic processes. Furthermore, the enhanced performance of g-C(3)N(4)-based nanocomposites has been widely employed in environmental and energetic applications such as photocatalytic degradation of pollutants, photocatalytic hydrogen generation, carbon dioxide reduction, disinfection, and supercapacitors. This critical review ends with a summary and some perspectives on the challenges and new directions in exploring g-C(3)N(4)-based advanced nanomaterials.
Collapse
Affiliation(s)
- Zaiwang Zhao
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing, 400067, China.
| | | | | |
Collapse
|
44
|
Jin R, Hu S, Gui J, Liu D. A Convenient Method to Prepare Novel Rare Earth Metal Ce-Doped Carbon Nitride with Enhanced Photocatalytic Activity Under Visible Light. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10001] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ruirui Jin
- College of Chemistry and Materials Science; Liaoning Shihua University; Fushun 113001 PR China
| | - Shaozheng Hu
- Institute of Eco-environmental Sciences; Liaoning Shihua University; Fushun 113001 PR China
| | - Jianzhou Gui
- College of Chemistry and Materials Science; Liaoning Shihua University; Fushun 113001 PR China
| | - Dan Liu
- College of Chemistry and Materials Science; Liaoning Shihua University; Fushun 113001 PR China
| |
Collapse
|
45
|
Zhang Q, Wang H, Hu S, Lu G, Bai J, Kang X, Liu D, Gui J. Synthesis and properties of visible light responsive g-C3N4/Bi2O2CO3 layered heterojunction nanocomposites. RSC Adv 2015. [DOI: 10.1039/c5ra04189a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A g-C3N4/Bi2O2CO3 layered heterojunction nanocomposite exhibits more effective separation of photogenerated electron–hole pairs and a stable chemical structure, thus showing higher photocatalytic activity and stability.
Collapse
Affiliation(s)
- Qian Zhang
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Haoying Wang
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Shaozheng Hu
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Guang Lu
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Jin Bai
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Xiaoxue Kang
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Dan Liu
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Jianzhou Gui
- College of Chemistry
- Chemical Engineering, and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| |
Collapse
|
46
|
Hu S, Li F, Fan Z, Wang F, Zhao Y, Lv Z. Band gap-tunable potassium doped graphitic carbon nitride with enhanced mineralization ability. Dalton Trans 2015; 44:1084-92. [DOI: 10.1039/c4dt02658f] [Citation(s) in RCA: 221] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Potassium doped into the g-C3N4 crystal lattice can tune the positions of the CB and VB potentials, influence the structural and optical properties and thus improve the photocatalytic degradation and mineralization ability.
Collapse
Affiliation(s)
- Shaozheng Hu
- Institute of Eco-environmental Sciences
- Liaoning Shihua University
- Fushun 113001
- PR China
| | - Fayun Li
- Institute of Eco-environmental Sciences
- Liaoning Shihua University
- Fushun 113001
- PR China
| | - Zhiping Fan
- Institute of Eco-environmental Sciences
- Liaoning Shihua University
- Fushun 113001
- PR China
| | - Fei Wang
- School of Environmental and Biological Engineering
- Liaoning Shihua University
- Fushun 113001
- PR China
| | - Yanfeng Zhao
- School of Environmental and Biological Engineering
- Liaoning Shihua University
- Fushun 113001
- PR China
| | - Zhenbo Lv
- School of Petrochemical Engineering
- Liaoning Shihua University
- Fushun 113001
- PR China
| |
Collapse
|
47
|
Hu S, Ma L, Li F, Fan Z, Wang Q, Bai J, Kang X, Wu G. Construction of g-C3N4/S-g-C3N4 metal-free isotype heterojunctions with an enhanced charge driving force and their photocatalytic performance under anoxic conditions. RSC Adv 2015. [DOI: 10.1039/c5ra15611d] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
g-C3N4/S-g-C3N4 metal-free isotype heterojunction catalysts with an enhanced charge driving force were prepared by a two step calcination method. The results indicate that this method can lead to a more efficient charge-carrier migration.
Collapse
Affiliation(s)
- Shaozheng Hu
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Lin Ma
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Fayun Li
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Zhiping Fan
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Qiong Wang
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Jin Bai
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Xiaoxue Kang
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Guang Wu
- School of Chemistry and Materials Sciences
- Heilongjiang University
- Key Laboratory of Chemical Engineering Processes & Technology for High-efficiency Conversion (College of Heilongjiang Province)
- Harbin 150080
- China
| |
Collapse
|
48
|
Li FT, Zhao Y, Wang Q, Wang XJ, Hao YJ, Liu RH, Zhao D. Enhanced visible-light photocatalytic activity of active Al₂O₃/g-C₃N₄ heterojunctions synthesized via surface hydroxyl modification. JOURNAL OF HAZARDOUS MATERIALS 2014; 283:371-81. [PMID: 25306536 DOI: 10.1016/j.jhazmat.2014.09.035] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 08/08/2014] [Accepted: 09/04/2014] [Indexed: 05/27/2023]
Abstract
Novel Al2O3/g-C3N4 heterojunction photocatalysts were fabricated through ultrasonic dispersion method. Al2O3, obtained via solution combustion, contained amorphous ingredient with lots of defect sites and was used as active component for transferring photo-induced electrons of g-C3N4. G-C3N4 was grafted surface hydroxyl groups in the presence of ammonia aqueous solution to combine with Al2O3 possessing positive charges via hydrogen bond. The XRD, SEM, element map, TEM, HRTEM, FT-IR, and XPS results indicate that these synthesized materials are two-phase hybrids of Al2O3 and g-C3N4 with interaction. The photocatalytic results for the degradation of rhodamine B (RhB) indicate that the most active heterojunction proportion is 60wt.% g-C3N4:40wt.% Al2O3, the visible light photocatalytic activity of which is 3.8 times that of a mechanical mixture. The enhanced performance is attributed to the high separation efficiency of photo-induced electrons from the LUMO of g-C3N4 injected into the defect sites of Al2O3, which is verified by photoluminescence spectroscopy (PL) and surface photovoltage (SPV) measurements. The electron paramagnetic resonance (EPR) signals and radical scavengers trapping experiments reveal holes (h(+)) and superoxide anion radical (O2(-)) are the main active species responsible for the degradation of RhB.
Collapse
Affiliation(s)
- Fa-Tang Li
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China.
| | - Ye Zhao
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Qing Wang
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Xiao-Jing Wang
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Ying-Juan Hao
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Rui-Hong Liu
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Dishun Zhao
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| |
Collapse
|
49
|
Yang Y, Guo W, Guo Y, Zhao Y, Yuan X, Guo Y. Fabrication of Z-scheme plasmonic photocatalyst Ag@AgBr/g-C₃N₄ with enhanced visible-light photocatalytic activity. JOURNAL OF HAZARDOUS MATERIALS 2014; 271:150-159. [PMID: 24632367 DOI: 10.1016/j.jhazmat.2014.02.023] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 02/06/2014] [Accepted: 02/08/2014] [Indexed: 06/03/2023]
Abstract
A series of Ag@AgBr grafted graphitic carbon nitride (Ag@AgBr/g-C3N4) plasmonic photocatalysts are fabricated through photoreducing AgBr/g-C3N4 hybrids prepared by deposition-precipitation method. The phase and chemical structures, electronic and optical properties as well as morphologies of Ag@AgBr/g-C3N4 heterostructures are well-characterized. Subsequently, the photocatalytic activity of Ag@AgBr/g-C3N4 is evaluated by the degradation of methyl orange (MO) and rhodamin B (RB) under visible-light irradiation. The enhanced photocatalytic activity of Ag@AgBr/g-C3N4 compared with g-C3N4 and Ag@AgBr is obtained and explained in terms of the efficient visible-light utilization efficiency as well as the construction of Z-scheme, which keeps photogenerated electrons and holes with high reduction and oxidation capability, evidenced by photoelectrochemical tests and free radical and hole scavenging experiments. Based on the intermediates identified in the reaction system, the photocatalytic degradation pathway of MO is put forward.
Collapse
Affiliation(s)
- Yuxin Yang
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Wan Guo
- School of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Yingna Guo
- School of Chemistry, Northeast Normal University, Changchun 130024, PR China
| | - Yahui Zhao
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Xing Yuan
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130117, PR China.
| | - Yihang Guo
- School of Chemistry, Northeast Normal University, Changchun 130024, PR China.
| |
Collapse
|
50
|
Hu S, Jin R, Lu G, Liu D, Gui J. The properties and photocatalytic performance comparison of Fe3+-doped g-C3N4 and Fe2O3/g-C3N4 composite catalysts. RSC Adv 2014. [DOI: 10.1039/c4ra03290j] [Citation(s) in RCA: 120] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
|