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Arputharaj E, Singh S, Pasupuleti RR, Kuo CA, Ya WJ, Huang YH, Wu YR, Chao YY, Huang YL. A phosphonium ionic liquid conjugated magnetic graphitic carbon nitride nanocomposite: an effective sample pretreatment tool for selenium separation and determination. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:6531-6540. [PMID: 37990560 DOI: 10.1039/d3ay01312j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
We established an innovative and easy-to-use methodology for selenium (Se) extraction and determination from real water samples utilizing a magnetic nanocomposite adsorbent (MNC-SPE) aided by an inductively coupled plasma mass spectrometry (ICP-MS) approach. The MNC-SPE adsorbent was fabricated by hybridizing Fe3O4 nanoparticles on the surface of carbon nitride nanosheets (GCN NSs) that were coated with 1-hexyl-3-methylimidazolium hexafluorophosphate ionic liquid (P-IL). A variety of techniques were used to thoroughly analyze the structural and chemical characteristics of MNC-SPE, and appear to have a great number of diverse active surface functional units (imidazole ring and -NH3+). In order to optimize the key factors affecting the Se extraction, parameters including the adsorbent dosage, contact time, eluent type, eluent volume, eluent time, and reusability of adsorbent were extensively studied. The proposed approach was validated under the optimal reaction conditions, and it showed good linearity between 0.15 and 100 pg μL-1 with a significant R2 value (R2 = 0.9994) toward Se metal. Besides, the Se limit of detection (LOD) and limit of quantification (LOQ) are 0.063 pg μL-1 and 0.147 pg μL-1, respectively. Further, by utilizing tap and river water samples, the applicability of the validated method was tested; the approach showed high Se recovery values in the range of 87.6-115.5% for the spiked real-world samples and the interday and intraday precision (RSD%) values of the approach were 4.8% (n = 6). The MNC-SPE can be regenerated and reused for four consecutive extraction-desorption cycles by employing 0.5 M NaOH eluent.
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Affiliation(s)
- Emmanuvel Arputharaj
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Shivangi Singh
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Raghavendra Rao Pasupuleti
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Chun-An Kuo
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Wei-Jyun Ya
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Yu-Hui Huang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - You-Rong Wu
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Yu-Ying Chao
- Department of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yeou-Lih Huang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- College of Professional Studies, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan
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Kumar N, Kumari M, Ismael M, Tahir M, Sharma RK, Kumari K, Koduru JR, Singh P. Graphitic carbon nitride (g-C 3N 4)-assisted materials for the detection and remediation of hazardous gases and VOCs. ENVIRONMENTAL RESEARCH 2023; 231:116149. [PMID: 37209982 DOI: 10.1016/j.envres.2023.116149] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/22/2023] [Accepted: 05/13/2023] [Indexed: 05/22/2023]
Abstract
Graphitic carbon nitride (g-C3N4)-based materials are attracting attention for their unique properties, such as low-cost, chemical stability, facile synthesis, adjustable electronic structure, and optical properties. These facilitate the use of g-C3N4 to design better photocatalytic and sensing materials. Environmental pollution by hazardous gases and volatile organic compounds (VOCs) can be monitored and controlled using eco-friendly g-C3N4- photocatalysts. Firstly, this review introduces the structure, optical and electronic properties of C3N4 and C3N4 assisted materials, followed by various synthesis strategies. In continuation, binary and ternary nanocomposites of C3N4 with metal oxides, sulfides, noble metals, and graphene are elaborated. g-C3N4/metal oxide composites exhibited better charge separation that leads to enhancement in photocatalytic properties. g-C3N4/noble metal composites possess higher photocatalytic activities due to the surface plasmon effects of metals. Ternary composites by the presence of dual heterojunctions improve properties of g-C3N4 for enhanced photocatalytic application. In the later part, we have summarised the application of g-C3N4 and its assisted materials for sensing toxic gases and VOCs and decontaminating NOx and VOCs by photocatalysis. Composites of g-C3N4 with metal and metal oxide give comparatively better results. This review is expected to bring a new sketch for developing g-C3N4-based photocatalysts and sensors with practical applications.
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Affiliation(s)
- Naveen Kumar
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India.
| | - Monika Kumari
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Mohammed Ismael
- Electrical energy storage system, Gottfried Wilhelm Leibniz Universität Hannover, Welfengarten 1, 30167, Hannover, Germany
| | - Muhammad Tahir
- Chemical and Petroleum Engineering Department, UAE University, P.O. Box 15551, Al Ain, United Arab Emirates
| | | | - Kavitha Kumari
- Baba Mastnath University, Asthal Bohar, Rohtak, 124001, India
| | - Janardhan Reddy Koduru
- Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, South Korea
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173212, India
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Wei Y, Wu Q, Meng H, Zhang Y, Cao C. Recent advances in photocatalytic self-cleaning performances of TiO 2-based building materials. RSC Adv 2023; 13:20584-20597. [PMID: 37441042 PMCID: PMC10333809 DOI: 10.1039/d2ra07839b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 04/17/2023] [Indexed: 07/15/2023] Open
Abstract
TiO2-based photocatalytic building materials can keep the building surface clean, and have decontamination, antibacterial effects and so on, which greatly reduces the maintenance cost and the risk of cleaning work, and these materials have great application potential in pollution and carbon reduction in the future. However, due to the wide band gap of TiO2, the low utilization of solar energy and the instability of super hydrophilicity have always been the difficulties in the field of photocatalysis. Based on the relevant research of TiO2-based photocatalytic materials in recent years, this review summarizes the modification strategies that can effectively improve the photocatalytic activity of TiO2-based photocatalytic materials. At the same time, the influence of complex environmental factors and substrate properties on the self-cleaning behavior of TiO2-based building materials was analyzed. This paper aims to provide effective guidance for the future application of TiO2-based photocatalysts in the construction field, improve people's understanding of photocatalytic building materials (PBM) and photocatalytic self-cleaning characteristics, and provide more possibilities for the extensive application of photocatalysis technology in the construction field, as well as to promote the realization of global carbon neutrality and other strategic goals of pollution and carbon reduction.
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Affiliation(s)
- Yuanchen Wei
- Longhua District Bureau of Public Works of Shenzhen Municipality Shenzhen 518028 China
| | - Que Wu
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology Guangzhou 510006 China
| | - Hong Meng
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology Guangzhou 510006 China
| | - Yongqing Zhang
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology Guangzhou 510006 China
| | - Changlu Cao
- Longhua District Bureau of Public Works of Shenzhen Municipality Shenzhen 518028 China
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4
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Shinde SB, Bhosale SR, Birajdar NB, Gore AH, Kolekar GB, Kolekar SS, Mandake AD, Anbhule PV. Construction of Waste Chalk Powder into mpg-C 3N 4-CaSO 4 as an Efficient Photocatalyst for Dye Degradation under UV-Vis Light and Sunlight. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:6324-6336. [PMID: 37093655 DOI: 10.1021/acs.langmuir.2c03362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this article, we present the synthesis of calcium sulfate nanoparticles (CaSO4 NPs) from waste chalk powder by the calcination method. These CaSO4 NPs were utilized for the construction of a mesoporous graphitic carbon nitride-calcium sulfate (mpg-C3N4-CaSO4) photocatalyst. Synthesized materials were confirmed by several characterization techniques. The photocatalytic performance of the synthesized samples was tested by the degradation of methylene blue (MB) in the presence of both UV-vis light and sunlight. The efficiency of photocatalytic degradation of MB dye using the optimized mpg-C3N4-CaSO4-2 composite reached 91% within 90 min in the presence of UV-vis light with superb photostability and recyclability after five runs compared to individual mpg-C3N4 and CaSO4 NPs and reached 95% within 120 min under sunlight. Histotoxicological studies on fish liver and ovary indicated that the dye containing the solution damaged the structure of the liver and ovary tissues, whereas the photodegraded solution of MB was found to be less toxic and caused negligible alterations in their typical structure similar to the control group.
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Affiliation(s)
- Sachin B Shinde
- Medicinal Material Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, Maharashtra, India
| | - Sneha R Bhosale
- Medicinal Material Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, Maharashtra, India
| | - Nagesh B Birajdar
- Department of Zoology, Shivaji University, Kolhapur 416004, Maharashtra, India
| | - Anil H Gore
- Tarsadia Institute of Chemical Science, Uka Tarsadia University, Bardoli 394350, Gujarat, India
| | - Govind B Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, Maharashtra, India
| | - Sanjay S Kolekar
- Analytical Chemistry and Material Science Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, Maharashtra, India
| | - Ajinkya D Mandake
- Department of Chemistry, Yashwantrao Mohite College of Arts, Science and Commerce, Pune 411038, Maharashtra, India
| | - Prashant V Anbhule
- Medicinal Material Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, Maharashtra, India
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Shams M, Mansukhani N, Hersam MC, Bouchard D, Chowdhury I. Environmentally sustainable implementations of two-dimensional nanomaterials. Front Chem 2023; 11:1132233. [PMID: 36936535 PMCID: PMC10020365 DOI: 10.3389/fchem.2023.1132233] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/14/2023] [Indexed: 03/06/2023] Open
Abstract
Rapid advancement in nanotechnology has led to the development of a myriad of useful nanomaterials that have novel characteristics resulting from their small size and engineered properties. In particular, two-dimensional (2D) materials have become a major focus in material science and chemistry research worldwide with substantial efforts centered on their synthesis, property characterization, and technological, and environmental applications. Environmental applications of these nanomaterials include but are not limited to adsorbents for wastewater and drinking water treatment, membranes for desalination, and coating materials for filtration. However, it is also important to address the environmental interactions and implications of these nanomaterials in order to develop strategies that minimize their environmental and public health risks. Towards this end, this review covers the most recent literature on the environmental implementations of emerging 2D nanomaterials, thereby providing insights into the future of this fast-evolving field including strategies for ensuring sustainable development of 2D nanomaterials.
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Affiliation(s)
- Mehnaz Shams
- Civil and Environmental Engineering, Washington State University, Pullman, WA, United States
| | - Nikhita Mansukhani
- Departments of Materials Science and Engineering, Chemistry and Medicine, Northwestern University, Evanston, IL, United States
| | - Mark C. Hersam
- Departments of Materials Science and Engineering, Chemistry and Medicine, Northwestern University, Evanston, IL, United States
| | - Dermont Bouchard
- National Exposure Research Laboratory, United States Environmental Protection Agency, Athens, GA, United States
| | - Indranil Chowdhury
- Civil and Environmental Engineering, Washington State University, Pullman, WA, United States
- *Correspondence: Indranil Chowdhury,
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Zhu Z, Xia H, Ren B, Han S, Li H. Fabrication of solar-driven Zn2SnO4/g-C3N4 photocatalyst with enhanced photocatalytic performance for norfloxacin. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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7
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Shinde SB, Nille OS, Gore AH, Birajdar NB, Kolekar GB, Anbhule PV. Valorization of Waste Tungsten Filament into mpg-C 3N 4-WO 3 Photocatalyst: A Sustainable e-Waste Management and Wastewater Treatment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13543-13557. [PMID: 36282958 DOI: 10.1021/acs.langmuir.2c02171] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The waste of tungsten filament materials in the environment is one of the reasons for environmental pollution, and it is very dangerous to animals and plants. To date, not much attention has been given to its utility or recyclability. Herein, the present work reported the synthesis of tungsten trioxide nanoparticles (WO3 NPs) by the utilization of cost-free waste tungsten filament by a simple calcination method. A mesoporous graphitic carbon nitride-tungsten trioxide (mpg-C3N4-WO3) composite designed from the WO3 NPs produced from tungsten filament waste and thiourea as a carbon and nitrogen precursor by a one-step calcination method. The synthesized samples were characterized and confirmed by different characterization techniques. The photocatalytic behavior of the synthesized mpg-C3N4-WO3 composite was assessed, with respect to the effect of initial pH, amount of photocatalyst, dye concentration, and reaction time, as well for the degradation of Methylene Blue (MB) dye under sunlight. The best photocatalytic performance (92%) was achieved using mpg-C3N4-WO3 with experimental condition ([photocatalyst] = 100 mg/L, [MB]0 = 10 mg/L, pH 8, and time = 120 min) under sunlight irradiation with excellent photostability than that of isolated mpg-C3N4 and WO3 NPs. The histotoxicological studies also showed that the photodegraded products of MB were found to be nontoxic and did not structurally changes in the gill architecture as well as brain tissues of freshwater fish Labeo rohita.
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Affiliation(s)
- Sachin B Shinde
- Medicinal Material Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
| | - Omkar S Nille
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
| | - Anil H Gore
- Tarsadia Institute of Chemical Science, Uka Tarsadia University, Bardoli-394350, Gujarat, India
| | - Nagesh B Birajdar
- Department of Zoology, Shivaji University, Kolhapur-416004, Maharashtra, India
| | - Govind B Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
| | - Prashant V Anbhule
- Medicinal Material Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur-416004, Maharashtra, India
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8
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Botelho CN, Falcão SS, Soares REP, Pereira SR, de Menezes AS, Kubota LT, Damos FS, Luz RCS. Evaluation of a photoelectrochemical platform based on strontium titanate, sulfur doped carbon nitride and palladium nanoparticles for detection of SARS-CoV-2 spike glycoprotein S1. BIOSENSORS & BIOELECTRONICS: X 2022; 11:100167. [PMID: 35647519 PMCID: PMC9124369 DOI: 10.1016/j.biosx.2022.100167] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/03/2022] [Accepted: 05/14/2022] [Indexed: 06/02/2023]
Abstract
This work aims to develop a photoelectrochemical (PEC) platform for detection of SARS-CoV-2 spike glyprotein S1. The PEC platform is based on the modification of a fluorine-doped tin oxide (FTO) coated glass slide with strontium titanate (SrTiO3 or ST), sulfur-doped carbon nitride (g-C3N4-S or CNS) and palladium nanoparticles entrapped in aluminum hydroxide matrix (PdAlO(OH) or PdNPs). The PEC platform was denoted as PdNPs/CNS/ST/FTO and it was characterized by SEM, TEM, FTIR, DRX, and EIS. The PEC response of the PdNPs/CNS/ST/FTO platform was optimized by evaluating the effects of the concentration of the donor molecule, the nature of the buffer, pH, antibody concentration, potential applied to the working electrode, and incubation time. The optimized PdNPs/CNS/ST/FTO PEC platform was modified with 5 μg mL-1 of antibody for determination of SARS-CoV-2 spike glycoprotein S1. A decrease in the photocurrent was observed with an increase in the concentration of SARS-CoV-2 from 1 fg mL-1 to 1000 pg mL-1 showing that the platform is a promising alternative for the detection of S1 protein from SARS-CoV-2. The designed PEC platform exhibited recovery percentages of 96.20% and 109.65% in artificial saliva samples.
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Affiliation(s)
- Chirlene N Botelho
- Departamento de Química, Laboratório de Sensores, Dispositivos e Métodos Analíticos, Universidade Federal do Maranhão, 65080-805, São Luís, MA, Brazil
| | - Suringo S Falcão
- Departamento de Química, Laboratório de Sensores, Dispositivos e Métodos Analíticos, Universidade Federal do Maranhão, 65080-805, São Luís, MA, Brazil
| | - Rossy-Eric P Soares
- Departamento de Biologia, Laboratório de Genética e Biologia Molecular, Universidade Federal do Maranhão-UFMA, 65080-805, São Luís, MA, Brazil
| | - Silma R Pereira
- Departamento de Biologia, Laboratório de Genética e Biologia Molecular, Universidade Federal do Maranhão-UFMA, 65080-805, São Luís, MA, Brazil
| | - Alan S de Menezes
- Departamento de Física, Central Analítica de Materiais, Universidade Federal do Maranhão, CEP, 65080-805, São Luís, MA, Brazil
| | - Lauro T Kubota
- Instituto de Química, Laboratório de Eletroquímica, Eletroanalítica e Desenvolvimento de Sensores, Universidade Estadual de Campinas, 13083-970, Campinas, SP, Brazil
| | - Flavio S Damos
- Departamento de Química, Laboratório de Sensores, Dispositivos e Métodos Analíticos, Universidade Federal do Maranhão, 65080-805, São Luís, MA, Brazil
| | - Rita C S Luz
- Departamento de Química, Laboratório de Sensores, Dispositivos e Métodos Analíticos, Universidade Federal do Maranhão, 65080-805, São Luís, MA, Brazil
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Khan M, Assal ME, Nawaz Tahir M, Khan M, Ashraf M, Rafe Hatshan M, Khan M, Varala R, Mohammed Badawi N, Farooq Adil S. Graphene/Inorganic Nanocomposites: Evolving Photocatalysts for Solar Energy Conversion for Environmental Remediation. JOURNAL OF SAUDI CHEMICAL SOCIETY 2022. [DOI: 10.1016/j.jscs.2022.101544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Hoang TVA, Nguyen PA, Choi WM, Shin EW. The Growth of Extended Melem Units on g-C 3N 4 by Hydrothermal Treatment and Its Effect on Photocatalytic Activity of g-C 3N 4 for Photodegradation of Tetracycline Hydrochloride under Visible Light Irradiation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12172945. [PMID: 36079982 PMCID: PMC9457853 DOI: 10.3390/nano12172945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 05/05/2023]
Abstract
In this work, the growth of extended tri-s-triazine units (melem units) on g-C3N4 (CN) by hydrothermal treatment and its effect on the photodegradation efficiency of tetracycline hydrochloride (TC) is investigated. The CN-180-x and CN-200-6 samples were prepared using different hydrolysis times and temperatures, and they were characterized by multiple physicochemical techniques. In addition, their photodegradation performance was evaluated under visible light irradiation. Compared to the CN, CN-180-6 possesses remarkable photocatalytic degradation efficiency at 97.17% towards TC removal in an aqueous solution. The high visible-light-induced photo-reactivity of CN-180-6 directly correlates to charge transfer efficiency, numerous structural defects with a high specific surface area (75.0 m2 g-1), and sufficient O-functional groups over g-C3N4. However, hydrothermal treatment at a higher temperature or during a longer time additionally induces the growth of extended melem units on the surface of g-C3N4, resulting in the inhibition of the charge transfer. In addition, the superoxide radical is proven to be generated from photoexcited reaction and plays a key role in the TC degradation.
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Affiliation(s)
- Thi Van Anh Hoang
- School of Chemical Engineering, University of Ulsan, Daehakro 93, Nam-gu, Ulsan 44610, Korea
| | - Phuong Anh Nguyen
- School of Chemical Engineering, University of Ulsan, Daehakro 93, Nam-gu, Ulsan 44610, Korea
| | - Won Mook Choi
- School of Chemical Engineering, University of Ulsan, Daehakro 93, Nam-gu, Ulsan 44610, Korea
| | - Eun Woo Shin
- School of Chemical Engineering, University of Ulsan, Daehakro 93, Nam-gu, Ulsan 44610, Korea
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11
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Nie J, Xu T, Liu Q, Yang C, Sun X. Multi-layered g-C 3N 4 as a Fluorescent Probe for Hg 2+ Detection. J Fluoresc 2022; 32:1755-1759. [PMID: 35678900 DOI: 10.1007/s10895-022-02949-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 04/11/2022] [Indexed: 10/18/2022]
Abstract
Hg2+ is one of the most toxic heavy metal ions that exist in the environment and it forms large numbers of toxic binary compounds. Accurate and rapid detection of the concentration of heavy metal ions is a prerequisite technology to achieve pollution control and prevention. Fluorescent probes have attracted extensive attention because of their high sensitivity, prominent precision, convenient and fast visualization of heavy metals. Herein, we report multi-layered graphitic carbon nitride via a simple thermopolymerization treatment as a very effectual fluorescent probe for sensitive and selective detection of Hg2+ with a limit of detection as low as 1.14 nM.
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Affiliation(s)
- Jia Nie
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China.,College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan, 610068, China
| | - Tong Xu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China.,College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan, 610068, China
| | - Qian Liu
- Institute for Advanced Study, Chengdu University, Chengdu, Sichuan, 610106, China
| | - Chun Yang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan, 610068, China.
| | - Xuping Sun
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China.
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12
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Wang L, He T, Li X, Cong H, Wang S, Zhao Y, Wang H. Ag
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Nanoparticles Decorated Carbon Nitride Nanotube to Boost Visible‐Light Photocatalytic Activity for the Degradation of Azo Dyes. ChemistrySelect 2022. [DOI: 10.1002/slct.202104595] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Liyan Wang
- College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing 163318 China
- No.4 Oil Production Company Daqing Oilfield Company Limited Daqing 163453 China
| | - Tingting He
- College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing 163318 China
| | - Xinyi Li
- College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing 163318 China
| | - Hongjin Cong
- College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing 163318 China
| | - Shiyu Wang
- College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing 163318 China
| | - Yang Zhao
- College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing 163318 China
| | - Huan Wang
- College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing 163318 China
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13
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Yao G, Liu Y, Liu J, Xu Y. Facile Synthesis of Porous g-C 3N 4 with Enhanced Visible-Light Photoactivity. Molecules 2022; 27:molecules27061754. [PMID: 35335118 PMCID: PMC8953620 DOI: 10.3390/molecules27061754] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/08/2022] [Accepted: 01/10/2022] [Indexed: 02/01/2023] Open
Abstract
Porous graphitic carbon nitride (g-C3N4) was prepared by dicyandiamide and urea via the pyrolysis method, which possessed enhanced visible-light-driven photocatalytic performance. Its surface area was increased from 17.12 to 48.00 m2/g. The porous structure not only enhanced the light capture capacity, but also accelerated the mass transfer ability. The Di (Dicyandiamide)/Ur (Urea) composite possessed better photocatalytic activity for Rhodamine B in visible light than that of g-C3N4. Moreover, the Di/Ur-4:5 composite showed the best photoactivity, which was almost 5.8 times that of g-C3N4. The enhanced photocatalytic activity showed that holes and superoxide radical played a key role in the process of photodegradation, which was ascribed to the enhanced separation of photogenerated carriers. The efficient separation of photogenerated electron-hole pairs may be owing to the higher surface area, O dopant, and pore volumes, which can not only improve the trapping opportunities of charge carriers but also the retarded charge carrier recombination. Therefore, it is expected that the composite would be a promising candidate material for organic pollutant degradation.
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Affiliation(s)
- Guangyuan Yao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
- Research Institute of Soil and Solid Waste, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
| | - Yuqiang Liu
- Research Institute of Soil and Solid Waste, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
| | - Jingcai Liu
- Research Institute of Soil and Solid Waste, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
- Correspondence: (J.L.); (Y.X.)
| | - Ya Xu
- Research Institute of Soil and Solid Waste, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
- Correspondence: (J.L.); (Y.X.)
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14
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Lu C, Chen X. Nanostructure Engineering of Graphitic Carbon Nitride for Electrochemical Applications. ACS NANO 2021; 15:18777-18793. [PMID: 34723464 DOI: 10.1021/acsnano.1c06454] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Graphitic carbon nitride with ordered two-dimensional structure displays multiple properties, including tunable structure, suitable bandgap, high stability, and facile synthesis. Many achievements on this material have been made in photocatalysis, but the advantages have not yet been fully explored in electrochemical fields. The bulk structure with low conductivity impedes charge-transfer kinetics during electrochemical processes. Excessive nitrogen content leads to insufficient charge transfer, while bulk structures produce tortuous channels for mass transport. Some attempts have been made to address these issues by nanostructure engineering, such as ultrathin structure design, heterogeneous composition, defect engineering, and morphology control. These structure-engineered nanomaterials have been successfully applied in electrochemical fields, including ionic actuators, flexible supercapacitors, lithium-ion batteries, and electrochemical sensors. Herein, a timely review on the latest advances in graphitic carbon nitride through various engineering strategies for electrochemical applications has been summarized. A perspective on critical challenges and future research directions is highlighted for graphitic carbon nitride in electrochemistry on the basis of existing research works and our experimental experience.
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Affiliation(s)
- Chao Lu
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
| | - Xi Chen
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
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15
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Zhou M, Ou H, Li S, Qin X, Fang Y, Lee S, Wang X, Ho W. Photocatalytic Air Purification Using Functional Polymeric Carbon Nitrides. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102376. [PMID: 34693667 PMCID: PMC8693081 DOI: 10.1002/advs.202102376] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/20/2021] [Indexed: 05/19/2023]
Abstract
The techniques for the production of the environment have received attention because of the increasing air pollution, which results in a negative impact on the living environment of mankind. Over the decades, burgeoning interest in polymeric carbon nitride (PCN) based photocatalysts for heterogeneous catalysis of air pollutants has been witnessed, which is improved by harvesting visible light, layered/defective structures, functional groups, suitable/adjustable band positions, and existing Lewis basic sites. PCN-based photocatalytic air purification can reduce the negative impacts of the emission of air pollutants and convert the undesirable and harmful materials into value-added or nontoxic, or low-toxic chemicals. However, based on previous reports, the systematic summary and analysis of PCN-based photocatalysts in the catalytic elimination of air pollutants have not been reported. The research progress of functional PCN-based composite materials as photocatalysts for the removal of air pollutants is reviewed here. The working mechanisms of each enhancement modification are elucidated and discussed on structures (nanostructure, molecular structue, and composite) regarding their effects on light-absorption/utilization, reactant adsorption, intermediate/product desorption, charge kinetics, and reactive oxygen species production. Perspectives related to further challenges and directions as well as design strategies of PCN-based photocatalysts in the heterogeneous catalysis of air pollutants are also provided.
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Affiliation(s)
- Min Zhou
- Department of Science and Environmental StudiesThe Education University of Hong KongTai Po, New TerritoriesHong KongP. R. China
| | - Honghui Ou
- Department of ChemistryTsinghua UniversityBeijing100084P. R. China
| | - Shanrong Li
- State Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou350116P. R. China
| | - Xing Qin
- Department of Science and Environmental StudiesThe Education University of Hong KongTai Po, New TerritoriesHong KongP. R. China
| | - Yuanxing Fang
- State Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou350116P. R. China
| | - Shun‐cheng Lee
- Department of Civil and Environmental EngineeringThe Hong Kong Polytechnic UniversityHong KongP. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou350116P. R. China
| | - Wingkei Ho
- Department of Science and Environmental StudiesThe Education University of Hong KongTai Po, New TerritoriesHong KongP. R. China
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16
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Poudyal D, Dugani R, Dash BS, Dhavale M, Satpati AK, Haram SK. γ-Ray-Assisted Synthesis of a Pt-Sn Bimetallic Composite Loaded on Graphene-Graphitic Carbon Nitride Hybrid: A Cocktail Electrocatalyst for the Methanol Oxidation Reaction. ACS OMEGA 2021; 6:13579-13587. [PMID: 34095652 PMCID: PMC8173555 DOI: 10.1021/acsomega.1c00114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 05/12/2021] [Indexed: 06/12/2023]
Abstract
The composite of Pt with transition metals is viewed as the most promising anode material for direct methanol fuel cell (DMFC) applications. Besides the decrease in the Pt loading, these multimetallic structures help in circumventing CO poisoning issues associated with a Pt catalyst. Herein, we prepared and loaded Pt-Sn bimetallic nanoparticles on an electron-rich and stable substrate consisting of graphitic nitride (GCN) and graphene oxide (GO)/reduced graphene oxide (r-GO) hybrid composites. The γ-radiolysis method was employed for coreduction of metal salts to deposit the binary composite of metal nanoparticles over the substrates. These structures were tested as the anode material for the methanol oxidation reaction (MOR). Among various possible combinations, Pt-Sn-loaded rGO-GCN (Pt-Sn/rGO-GCN) demonstrated the current density of ca. 2.4 A/mgPt. To the best of our knowledge, this value is among the highest ones, reported for similar systems in the acidic pH. Furthermore, these composites demonstrated excellent stability in the repeated cycle test. The improved performance is associated to the plenty of -OH groups provided by the Sn counterpart and a large number of adsorption sites from the electron-reached GCN counterpart.
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Affiliation(s)
- Durgasha
C. Poudyal
- Department
of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune 411007, India
| | - Rajshree Dugani
- Department
of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune 411007, India
| | - Banendu Sunder Dash
- Department
of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune 411007, India
| | - Manjiri Dhavale
- Department
of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune 411007, India
| | - Ashis Kumar Satpati
- Analytical
Chemistry Division, Bhabha Atomic Research
Centre, Trombay, Mumbai 400085, India
| | - Santosh K. Haram
- Department
of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune 411007, India
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17
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Huang Z, Li L, Li Z, Li H, Wu J. Synthesis of Novel Kaolin-Supported g-C 3N 4/CeO 2 Composites with Enhanced Photocatalytic Removal of Ciprofloxacin. MATERIALS 2020; 13:ma13173811. [PMID: 32872322 PMCID: PMC7503662 DOI: 10.3390/ma13173811] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/23/2020] [Accepted: 08/26/2020] [Indexed: 01/30/2023]
Abstract
Herein, novel ternary kaolin/CeO2/g-C3N4 composite was prepared by sol-gel method followed by hydrothermal treatment. The self-assembled 3D “sandwich” structure consisting of kaolin, CeO2 and g-C3N4 nanosheets, was systematically characterized by appropriate techniques to assess its physicochemical properties. In the prerequisite of visible-light irradiation, the removal efficiency of ciprofloxacin (CIP) over the kaolin/CeO2/g-C3N4 composite was about 90% within 150 min, 2-folds higher than those of pristine CeO2 and g-C3N4. The enhanced photocatalytic activity was attributed to the improved photo-induced charge separation efficiency and the large specific surface area, which was determined by electrochemical measurements and N2 physisorption methods, respectively. The synergistic effect between the kaolin and CeO2/g-C3N4 heterostructure improved the photocatalytic performance of the final solid. The trapping and electron paramagnetic resonance (EPR) experiments demonstrated that the hole (h+) and superoxide radicals (•O2−) played an important role in the photocatalytic process. The photocatalytic mechanism for CIP degradation was also proposed based on experimental results. The obtained results revealed that the kaolin/CeO2/g-C3N4 composite is a promising solid catalyst for environmental remediation.
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Affiliation(s)
- Zhiquan Huang
- College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, Henan, China; (Z.H.); (Z.L.); (H.L.); (J.W.)
- Luoyang Institute of Science and Technology, Luoyang 471023, Henan, China
| | - Leicheng Li
- College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, Henan, China; (Z.H.); (Z.L.); (H.L.); (J.W.)
- Correspondence:
| | - Zhiping Li
- College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, Henan, China; (Z.H.); (Z.L.); (H.L.); (J.W.)
| | - Huan Li
- College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, Henan, China; (Z.H.); (Z.L.); (H.L.); (J.W.)
| | - Jiaqi Wu
- College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, Henan, China; (Z.H.); (Z.L.); (H.L.); (J.W.)
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18
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Singh P, Shandilya P, Raizada P, Sudhaik A, Rahmani-Sani A, Hosseini-Bandegharaei A. Review on various strategies for enhancing photocatalytic activity of graphene based nanocomposites for water purification. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.12.001] [Citation(s) in RCA: 216] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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19
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Borthakur S, Basyach P, Kalita L, Sonowal K, Tiwari A, Chetia P, Saikia L. Sunlight assisted degradation of a pollutant dye in water by a WO3@g-C3N4 nanocomposite catalyst. NEW J CHEM 2020. [DOI: 10.1039/c9nj05142b] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A series of WO3@g-C3N4 nanocomposites were prepared by following a facile, cost-effective chemical rote and characterized by different techniques. They are promising photocatalyst with high potential for solar light harvesting and environmental remediation.
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Affiliation(s)
- Sukanya Borthakur
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Purashri Basyach
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Lisamoni Kalita
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Karanika Sonowal
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Amritanjali Tiwari
- Department of Energy & Environmental Engineering CSIR – Indian Institute of Chemical Technology
- Hyderabad – 500 007
- India
| | - Pubali Chetia
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Lakshi Saikia
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
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20
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Abstract
Undoubtedly, carbon-based (nano)composites can be promising photocatalysts with improved photocatalytic activity due to the coupling effect from the incorporation of carbon species. In this mini-review, we focus on the recent development of photocatalysts based on carbon-based (nano)composites. TiO2 is well-known as a typical photocatalyst. Special attention is paid to the various types of carbon–TiO2 composites such as C-doped TiO2, N–C-doped TiO2, metal–C-doped TiO2, and other co-doped C/TiO2 composites. Various synthetic strategies including the solvothermal/hydrothermal method, sol–gel method, and template-directed method are reviewed for the preparation of carbon-based TiO2 composites. C/graphitic carbon nitride (g-C3N4) composites and ternary C-doped composites are also summarized and ascribed to the unique electronic structure of g-C3N4 and the synergistic effect of the ternary interfaces, respectively. In the end, we put forward the future perspective of the photocatalysts containing carbon species based on our knowledge.
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21
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Zhao X, Xie J, Liu X, Liu X. Facilitating a high-performance photocatalyst for Suzuki reaction: Palladium nanoparticles immobilized on reduced graphene oxide-doped graphitic carbon nitride. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4623] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaohua Zhao
- School of Materials Science and Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Jiateng Xie
- School of Materials Science and Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Xin Liu
- School of Materials Science and Engineering; Jiangsu University; Zhenjiang 212013 China
| | - Xiang Liu
- Zhenjiang Key Laboratory of Functional Chemistry and Institute of Medicine and Chemical Engineering; Zhenjiang College; Zhenjiang 212000 China
- Biofuels Institute of Jiangsu University; Zhenjiang 212013 China
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22
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Wang X, Lu M, Ma J, Ning P, Che L. Synthesis of K-doped g-C3N4/carbon microsphere@graphene composite with high surface area for enhanced adsorption and visible photocatalytic degradation of tetracycline. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.06.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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23
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Yang H, Li X, Wang X, Chen W, Bian W, Choi MMF. Silver-doped graphite carbon nitride nanosheets as fluorescent probe for the detection of curcumin. LUMINESCENCE 2018; 33:1062-1069. [DOI: 10.1002/bio.3509] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/11/2018] [Accepted: 05/02/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Haifen Yang
- School of Pharmacy; Shanxi Medical University; Taiyuan P. R. China
| | - Xuebing Li
- School of Basic Medical Science; Shanxi Medical University; Taiyuan P. R. China
| | - Xinxv Wang
- Shanxi Experimental Secondary School; Taiyuan P. R. China
| | - Wenfang Chen
- School of Basic Medical Science; Shanxi Medical University; Taiyuan P. R. China
| | - Wei Bian
- School of Basic Medical Science; Shanxi Medical University; Taiyuan P. R. China
| | - Martin M. F. Choi
- Bristol Chinese Christian Church, c/o Tyndale Baptist Church; Bristol UK
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24
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Li Y, Sun Y, Ho W, Zhang Y, Huang H, Cai Q, Dong F. Highly enhanced visible-light photocatalytic NO x purification and conversion pathway on self-structurally modified g-C 3N 4 nanosheets. Sci Bull (Beijing) 2018; 63:609-620. [PMID: 36658881 DOI: 10.1016/j.scib.2018.04.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 04/02/2018] [Accepted: 04/10/2018] [Indexed: 01/21/2023]
Abstract
The unmodified graphitic carbon nitride (g-C3N4) suffers from low photocatalytic activity because of the unfavourable structure. In the present work, we reported a simple self-structural modification strategy to optimize the microstructure of g-C3N4 and obtained graphene-like g-C3N4 nanosheets with porous structure. In contrast to traditional thermal pyrolysis preparation of g-C3N4, the present thermal condensation was improved via pyrolysis of thiourea in an alumina crucible without a cover, followed by secondary heat treatment. The popcorn-like formation and layer-by-layer thermal exfoliation of graphene-like porous g-C3N4 was proposed to explain the formation mechanism. The photocatalytic removal performance of both NO and NO2 with the graphene-like porous g-C3N4 for was significantly enhanced by self-structural modification. Trapping experiments and in-situ diffuse reflectance infrared fourier transform spectroscopy (DRIFTS) measurement were conducted to detect the active species during photocatalysis and the conversion pathway of g-C3N4 photocatalysis for NOx purification was revealed. The photocatalytic activity of graphene-like porous g-C3N4 was highly enhanced due to the improved charge separation and increased oxidation capacity of the O2- radicals and holes. This work could not only provide a novel self-structural modification for design of highly efficient photocatalysts, but also offer new insights into the mechanistic understanding of g-C3N4 photocatalysis.
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Affiliation(s)
- Yuhan Li
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China; Department of Science and Environmental Studies, The Center for Education in Environmental Sustainability, The Education University of Hong Kong, Hong Kong, China
| | - Yanjuan Sun
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Wingkei Ho
- Department of Science and Environmental Studies, The Center for Education in Environmental Sustainability, The Education University of Hong Kong, Hong Kong, China
| | - Yuxin Zhang
- College of Materials Science and Engineering, National Key Laboratory of Fundamental Science of Micro/Nano-Devices and System Technology, Chongqing University, Chongqing 400044, China
| | - Hongwei Huang
- School of Materials Science and Technology, National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
| | - Qiang Cai
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Fan Dong
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China.
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25
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Facile synthesis of carbon-rich g-C3N4 by copolymerization of urea and tetracyanoethylene for photocatalytic degradation of Orange II. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.02.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Synthesis, Characterization, and Photocatalytic Properties of Bamboo Charcoal/TiO₂ Composites Using Four Sizes Powder. MATERIALS 2018; 11:ma11050670. [PMID: 29693639 PMCID: PMC5978047 DOI: 10.3390/ma11050670] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 04/18/2018] [Accepted: 04/20/2018] [Indexed: 11/16/2022]
Abstract
Visible-light-active bamboo biochar/TiO2 composites were fabricated by the calcination method using C16H36O4Ti as the titanium source and bamboo powder with different sizes as the carbon source. The TiO2 nanoparticles were observed to disperse onto the surface of bamboo biochar fiber. The sizes of the bamboo powder played an important role in the microstructures and the properties of bamboo biochar/TiO2 composites. The bamboo biochar/TiO2 composites displayed the photocatalytic activities both under visible light irradiation and UV irradiation. The adsorption isotherms better fitted Freundlich isotherm models and the photodegradation reactions followed pseudo-first-order kinetics. Bamboo charcoal/TiO2 composites exhibited high stability after up to four cycles. This research could pave the way for high-value applications of biomass in the environmental field.
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27
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Zhao H, Li L, Zheng C, Hao Y, Niu M, Hu Y, Chang J, Zhang Z, Wang L. An intelligent dual stimuli-responsive photosensitizer delivery system with O 2-supplying for efficient photodynamic therapy. Colloids Surf B Biointerfaces 2018; 167:299-309. [PMID: 29679806 DOI: 10.1016/j.colsurfb.2018.04.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 03/21/2018] [Accepted: 04/04/2018] [Indexed: 12/18/2022]
Abstract
The effects of photodynamic therapy (PDT) are limited by the hypoxic tumor microenvironment (TME). In this paper, a new type of biocompatible multifunctional photosensitizer delivery system was fabricated to relieve tumor hypoxia and improve the efficacy of PDT. The photosensitizer hematoporphyrin monomethyl ether (HMME) and catalase (CAT) were encapsulated in the pores of mesoporous graphitic-phase carbon nitride nanosheets (mpg-C3N4). Next, hyaluronic (HA) was coated on the surface of the mpg-C3N4 via an amide linkage to construct the tumor-targeting HAase/CAT dual activatable and mpg-C3N4/HMME response photosensitizer delivery system (HA@mpg-C3N4-HMME/CAT). Upon intravenous injection, HA@mpg-C3N4-HMME/CAT shows high tumor accumulation owing to the tumor-targeting HA coating. Meanwhile, CAT within mpg-C3N4 could trigger decomposition of endogenic TME H2O2 to increase oxygen supply in-situ to relieve tumor hypoxia. This effect together with mpg-C3N4/HMME dual response is able to dramatically improve PDT efficiency. The hypoxia status of tumors was evaluated in vivo to demonstrate the success of the O2-supplying. And the in vitro and in vivo results showed the excellent therapeutic effect of the HA@mpg-C3N4-HMME/CAT photosensitizer delivery system. O2-supplying PDT may enable the enhancement of traditional PDT and future PDT design.
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Affiliation(s)
- Hongjuan Zhao
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, PR China
| | - Li Li
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, PR China
| | - Cuixia Zheng
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, PR China
| | - Yongwei Hao
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, PR China
| | - Mengya Niu
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, PR China
| | - Yujie Hu
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, PR China
| | - Junbiao Chang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, PR China; Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou 450001, PR China; School of chemistry and molecular engineering, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, PR China
| | - Zhenzhong Zhang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, PR China; Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou 450001, PR China.
| | - Lei Wang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou 450001, PR China; Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou 450001, PR China.
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28
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Mahalingam S, Ahn YH. Improved visible light photocatalytic activity of rGO–Fe3O4–NiO hybrid nanocomposites synthesized byin situfacile method for industrial wastewater treatment applications. NEW J CHEM 2018. [DOI: 10.1039/c8nj00013a] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In situsurfactant free synthesis of rGO–Fe3O4–NiO hybrid nanocomposite for improving photocatalytic degradation of synthetic dyes (MR and CV) and real industrial dye wastewater.
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Affiliation(s)
- Shanmugam Mahalingam
- Department of Civil Engineering
- Disasters Prevention Research Institute
- Yeungnam University
- Gyeongsan
- Republic of Korea
| | - Young-Ho Ahn
- Department of Civil Engineering
- Disasters Prevention Research Institute
- Yeungnam University
- Gyeongsan
- Republic of Korea
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29
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In-situ functionalization of mesoporous hexagonal ZnO synthesized in task specific ionic liquid as a photocatalyst for elimination of SO 2 , NO x , and CO. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.08.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Akhmedov VM, Melnikova NE, Akhmedov ID. Synthesis, properties, and application of polymeric carbon nitrides. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1810-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Zhou L, Zhang H, Guo X, Sun H, Liu S, Tade MO, Wang S. Metal-free hybrids of graphitic carbon nitride and nanodiamonds for photoelectrochemical and photocatalytic applications. J Colloid Interface Sci 2017; 493:275-280. [DOI: 10.1016/j.jcis.2017.01.038] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 01/10/2017] [Accepted: 01/11/2017] [Indexed: 10/20/2022]
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32
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In-situ synthesis of novel Z-scheme SnS2/BiOBr photocatalysts with superior photocatalytic efficiency under visible light. J Colloid Interface Sci 2017; 493:1-9. [DOI: 10.1016/j.jcis.2016.12.066] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 12/23/2016] [Accepted: 12/28/2016] [Indexed: 11/17/2022]
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33
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Li Y, Lv K, Ho W, Zhao Z, Huang Y. Enhanced visible-light photo-oxidation of nitric oxide using bismuth-coupled graphitic carbon nitride composite heterostructures. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(16)62573-1] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Wang X, Mao W, Wang Q, Zhu Y, Min Y, Zhang J, Yang T, Yang J, Li X, Huang W. Low-temperature fabrication of Bi25FeO40/rGO nanocomposites with efficient photocatalytic performance under visible light irradiation. RSC Adv 2017. [DOI: 10.1039/c6ra27025e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bismuth ferrite/reduced graphene oxide (Bi25FeO40/rGO) nanocomposites have been synthesized by a hydrothermal method, followed by a simple room temperature liquid phase process.
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35
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Nguyen DCT, Cho KY, Oh WC. Synthesis of mesoporous SiO2/Cu2O–graphene nanocomposites and their highly efficient photocatalytic performance for dye pollutants. RSC Adv 2017. [DOI: 10.1039/c7ra03526h] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A mesoporous SiO2/Cu2O–graphene composite, a novel material, was successfully synthesized using a self-assembly method with tetraethyl orthosilicate (TEOS).
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Affiliation(s)
| | - Kwang Yeon Cho
- Korea Institutes of Ceramic Engineering and Technology
- Jinju-Si
- Republic of Korea
| | - Won-Chun Oh
- Department of Advanced Materials Science & Engineering
- Hanseo University
- Seosan
- Korea
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36
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Rameshbabu R, Vinoth R, Navaneethan M, Hayakawa Y, Neppolian B. Fabrication of Cu2MoS4 hollow nanotubes with rGO sheets for enhanced visible light photocatalytic performance. CrystEngComm 2017. [DOI: 10.1039/c6ce02337a] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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K. S. D, Xavier MM, P. V. V, V. N. R, Mathew S. A quaternary TiO2/ZnO/RGO/Ag nanocomposite with enhanced visible light photocatalytic performance. NEW J CHEM 2017. [DOI: 10.1039/c7nj00495h] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis and photocatalytic application of a quaternary TiO2/ZnO/RGO/Ag nanocomposite under visible light.
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Affiliation(s)
- Divya K. S.
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam 686 560
- India
| | - Marilyn Mary Xavier
- Advanced Molecular Materials Research Centre
- Mahatma Gandhi University
- Kottayam 686 560
- India
| | - Vandana P. V.
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam 686 560
- India
| | - Reethu V. N.
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam 686 560
- India
| | - Suresh Mathew
- School of Chemical Sciences
- Mahatma Gandhi University
- Kottayam 686 560
- India
- Advanced Molecular Materials Research Centre
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38
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Patnaik S, Sahoo DP, Parida K. Nanocomposites of g-C3N4 with Carbonaceous π-conjugated/Polymeric Materials Towards Visible Light-Induced Photocatalysts. NANOCOMPOSITES FOR VISIBLE LIGHT-INDUCED PHOTOCATALYSIS 2017. [DOI: 10.1007/978-3-319-62446-4_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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39
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Li X, Yu J, Wageh S, Al-Ghamdi AA, Xie J. Graphene in Photocatalysis: A Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6640-6696. [PMID: 27805773 DOI: 10.1002/smll.201600382] [Citation(s) in RCA: 327] [Impact Index Per Article: 40.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 08/09/2016] [Indexed: 05/22/2023]
Abstract
In recent years, heterogeneous photocatalysis has received much research interest because of its powerful potential applications in tackling many important energy and environmental challenges at a global level in an economically sustainable manner. Due to their unique optical, electrical, and physicochemical properties, various 2D graphene nanosheets-supported semiconductor composite photocatalysts have been widely constructed and applied in different photocatalytic fields. In this review, fundamental mechanisms of heterogeneous photocatalysis, including thermodynamic and kinetics requirements, are first systematically summarized. Then, the photocatalysis-related properties of graphene and its derivatives, and design rules and synthesis methods of graphene-based composites are highlighted. Importantly, different design strategies, including doping and sensitization of semiconductors by graphene, improving electrical conductivity of graphene, increasing eloectrocatalytic active sites on graphene, strengthening interface coupling between semiconductors and graphene, fabricating micro/nano architectures, constructing multi-junction nanocomposites, enhancing photostability of semiconductors, and utilizing the synergistic effect of various modification strategies, are thoroughly summarized. The important applications including photocatalytic pollutant degradation, H2 production, and CO2 reduction are also addressed. Through reviewing the significant advances on this topic, it may provide new opportunities for designing highly efficient 2D graphene-based photocatalysts for various applications in photocatalysis and other fields, such as solar cells, thermal catalysis, separation, and purification.
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Affiliation(s)
- Xin Li
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, P. R. China
- Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, Institute of New Energy and New Materials, South China Agricultural University, Guangzhou, 510642, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - S Wageh
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ahmed A Al-Ghamdi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Jun Xie
- Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, Institute of New Energy and New Materials, South China Agricultural University, Guangzhou, 510642, P. R. China
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40
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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
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41
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Monolayer g-C3N4 Fluorescent Sensor for Sensitive and Selective Colorimetric Detection of Silver ion from Aqueous Samples. J Fluoresc 2016; 26:739-44. [PMID: 26753758 DOI: 10.1007/s10895-016-1764-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 01/05/2016] [Indexed: 01/08/2023]
Abstract
Rapid and sensitive detection of heavy-metal ions in natural water environments worldwide is urgently needed because of their severe threats to human health. In the present work, monolayer graphite-like flake C3N4 (g-C3N4) materials were applied as a new fluorescent sensor for the detection of trace silver ion in aqueous solution. The thickness of synthesized g-C3N4 was 0.45 nm and obtained by exfoliating twice with ultrasonic. With the presence of ethylene diamine tetraacetic acid as a screening agent, the highly sensitive sensor reached a low detection limit of 52.3 nmol/L for silver (I) ion and there was no disturbance when silver (I) ion coexisted with other metal ions in water samples. Under the optimal conditions, the monolayer g-C3N4 was successfully used to detect trace silver (I) ion in different environmental water and drinking water samples.
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42
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Patnaik S, Martha S, Acharya S, Parida KM. An overview of the modification of g-C3N4 with high carbon containing materials for photocatalytic applications. Inorg Chem Front 2016. [DOI: 10.1039/c5qi00255a] [Citation(s) in RCA: 175] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review highlights the recent trends in modifying g-C3N4 with high carbon containing materials for H2 production and pollutant degradation.
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Affiliation(s)
- Sulagna Patnaik
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar 751030
- India
| | - Satyabadi Martha
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar 751030
- India
| | - Saumyaprava Acharya
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar 751030
- India
| | - K. M. Parida
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar 751030
- India
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43
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Choudhury B, Giri PK. Isotype heterostructure of bulk and nanosheets of graphitic carbon nitride for efficient visible light photodegradation of methylene blue. RSC Adv 2016. [DOI: 10.1039/c6ra00933f] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Isotype heterostructure of bulk and nanosheets of graphitic carbon nitride with effective band gap of 2.62 eV and charge carrier mean lifetime of 21 ns exhibits an efficient visible light photocatalysis.
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Affiliation(s)
- Biswajit Choudhury
- Department of Physics
- Indian Institute of Technology Guwahati
- Guwahati 781039
- India
| | - P. K. Giri
- Department of Physics
- Indian Institute of Technology Guwahati
- Guwahati 781039
- India
- Center for Nanotechnology
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44
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Nie H, Ou M, Zhong Q, Zhang S, Yu L. Efficient visible-light photocatalytic oxidation of gaseous NO with graphitic carbon nitride (g-C3N4) activated by the alkaline hydrothermal treatment and mechanism analysis. JOURNAL OF HAZARDOUS MATERIALS 2015; 300:598-606. [PMID: 26259165 DOI: 10.1016/j.jhazmat.2015.07.066] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 07/21/2015] [Accepted: 07/26/2015] [Indexed: 06/04/2023]
Abstract
In this paper, an enhanced visible-light photocatalytic oxidation (PCO) of NO (∼ 400 ppm) in the presence of the graphitic carbon nitride (g-C3N4) treated by the alkaline hydrothermal treatment is evaluated. Various g-C3N4 samples were treated in different concentrations of NaOH solutions and the sample treated in 0.12 mol L(-1) of NaOH solution possesses the largest BET specific surface area as well as the optimal ability of the PCO of NO. UV-vis diffuse reflection spectra (DRS) and photoluminescence (PL) spectra were also conducted, and the highly improved photocatalytic performance is ascribed to the large specific surface area and high pore volume, which provides more adsorption and active sites, the wide visible-light adsorption edge and the narrow band gap, which is favorable for visible-light activation, as well as the decreased recombination rate of photo-generated electrons and holes, which could contribute to the production of active species. Fluorescence spectra and a trapping experiment were conducted to further the mechanism analysis of the PCO of NO, illustrating that superoxide radicals (O2(-)) play the dominant role among active species in the PCO of NO.
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Affiliation(s)
- Haoyu Nie
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China; Nanjing AIREP Environmental Protection Technology Co., Ltd., Nanjing, Jiangsu 210091, PR China
| | - Man Ou
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China; Nanjing AIREP Environmental Protection Technology Co., Ltd., Nanjing, Jiangsu 210091, PR China
| | - Qin Zhong
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China; Nanjing AIREP Environmental Protection Technology Co., Ltd., Nanjing, Jiangsu 210091, PR China.
| | - Shule Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China; Nanjing AIREP Environmental Protection Technology Co., Ltd., Nanjing, Jiangsu 210091, PR China
| | - Lemeng Yu
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China; Nanjing AIREP Environmental Protection Technology Co., Ltd., Nanjing, Jiangsu 210091, PR China
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45
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Tang X, Chen W, Zu Z, Zang Z, Deng M, Zhu T, Sun K, Sun L, Xue J. Nanocomposites of AgInZnS and graphene nanosheets as efficient photocatalysts for hydrogen evolution. NANOSCALE 2015; 7:18498-18503. [PMID: 26383157 DOI: 10.1039/c5nr05145b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this study, AgInZnS-reduced graphene (AIZS-rGO) nanocomposites with tunable band gap absorption and large specific surface area were synthesized by a simple hydrothermal route, which showed highly efficient photocatalytic hydrogen evolution under visible-light irradiation. The relationships between their crystal structures, morphology, surface chemical states and photocatalytic activity have been explored in detail. Importantly, the AIZS-rGO nanocomposites with 0.02 wt% of graphene exhibited the highest hydrogen production rate of 1.871 mmol h(-1) g(-1), which was nearly 2 times the hydrogen production rate when using pure AIZS nanoparticles as the photocatalyst. This high photocatalytic H2-production activity was attributed predominantly to the incorporation of graphene sheets, which demonstrated an obvious influence on the structure and optical properties of the AIZS nanoparticles. In the AIZS-rGO nanocomposites, graphene could not only serve as an effective supporting layer but also is a recombination center for conduction band electrons and valence band holes. It is believed that this kind of graphene-based material would attract much attention as a promising photocatalyst with a high efficiency and a low cost for photocatalytic H2 evolution and facilitates their application in the environmental protection field.
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Affiliation(s)
- Xiaosheng Tang
- Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
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46
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Shen C, Chen C, Wen T, Zhao Z, Wang X, Xu A. Superior adsorption capacity of g-C3N4 for heavy metal ions from aqueous solutions. J Colloid Interface Sci 2015; 456:7-14. [DOI: 10.1016/j.jcis.2015.06.004] [Citation(s) in RCA: 126] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/19/2015] [Accepted: 06/02/2015] [Indexed: 10/23/2022]
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47
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Li J, Liu X, Sun Z, Sun Y, Pan L. Novel yolk–shell structure bismuth-rich bismuth molybdate microspheres for enhanced visible light photocatalysis. J Colloid Interface Sci 2015; 452:109-115. [DOI: 10.1016/j.jcis.2015.04.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/28/2015] [Accepted: 04/14/2015] [Indexed: 01/27/2023]
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48
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Wang X, Mao W, Zhang J, Han Y, Quan C, Zhang Q, Yang T, Yang J, Li X, Huang W. Facile fabrication of highly efficient g-C3N4/BiFeO3 nanocomposites with enhanced visible light photocatalytic activities. J Colloid Interface Sci 2015; 448:17-23. [DOI: 10.1016/j.jcis.2015.01.090] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 01/26/2015] [Accepted: 01/31/2015] [Indexed: 12/01/2022]
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49
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Chen L, Tao H, Pang T, Dong J, Song X. Synthesis of Ordered Mesoporous Carbon/Graphitic Carbon Nitride (g-C3N4) Composites with Enhanced Visible-light-driven Photocatalytic Activity. CHEM LETT 2015. [DOI: 10.1246/cl.141072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Hong Tao
- Department of Environment and Architecture, University of Shanghai for Science and Technology
| | - Tao Pang
- Department of Environment and Architecture, University of Shanghai for Science and Technology
| | - Jifeng Dong
- Department of Environment and Architecture, University of Shanghai for Science and Technology
| | - Xiaofeng Song
- Department of Environment and Architecture, University of Shanghai for Science and Technology
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50
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Xiong T, Dong F, Zhou Y, Fu M, Ho WK. New insights into how RGO influences the photocatalytic performance of BiOIO3/RGO nanocomposites under visible and UV irradiation. J Colloid Interface Sci 2015; 447:16-24. [PMID: 25689523 DOI: 10.1016/j.jcis.2015.01.068] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 01/23/2015] [Accepted: 01/23/2015] [Indexed: 11/26/2022]
Abstract
Reduced graphene oxide (RGO) has been demonstrated to be effective in enhancing the photocatalytic activity of various semiconductors. However, an important issue that has been overlooked is the role of RGO in UV-induced photocatalysis of RGO-based nanocomposites. In the present work, novel BiOIO3/RGO nanocomposites were prepared by a simple one-pot hydrothermal method, during which BiOIO3 nanoplates were formed in situ on RGO sheets resulting from partial reduction of RGO. The two components of the composite displayed intimate interfacial contact. The as-prepared BiOIO3/RGO nanocomposites exhibited highly enhanced visible photocatalytic activity, relative to that of pure BiOIO3, toward removal of NO from air. However, the BiOIO3/RGO nanocomposites showed only slightly increased photocatalytic activity, relative to pure, under UV irradiation. The limited enhancement of UV activity can be ascribed to the fact that BiOIO3 would be expected to compete with RGO with regard to absorption and utilization of UV light. Evidence shows that RGO can act as a semiconductor rather than a photosensitizer or electron reservoir in BiOIO3/RGO nano-composites. In addition, the active species responsible for photoactivity have been investigated by a DMPO spin-trapping electron spin resonance technique. Photo-generated holes were found to be the main active species inducing the photo-oxidation of NO under visible light, whereas holes and OH radicals are considered to be responsible for photo-activity under UV light. This work points to BiOIO3/RGO nano-composites as new and efficient visible light photocatalysts for environmental remediation applications, and also as a source of new insights into the pivotal role of RGO in photocatalysis of RGO-based nanocomposites under visible as well as UV light.
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Affiliation(s)
- Ting Xiong
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing 400067, China
| | - Fan Dong
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing 400067, China.
| | - Ying Zhou
- State Key Laboratory of Oil and Gas Reservoir and Exploitation, School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Min Fu
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing 400067, China
| | - Wing-Kei Ho
- Department of Science and Environmental Studies, The Centre for Education in Environmental Sustainability, The Hong Kong Institute of Education, Hong Kong, China
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