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Yuan Y, Xia H, Guo W, Huang B, Chen Y, Qiu M, Wang Y, Hu B. The modified biochar from wheat straw by the combined composites of MnFe 2O 4 nanoparticles and chitosan Schiff base for enhanced removal of U(VI) ions from aqueous solutions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:126045-126056. [PMID: 38008835 DOI: 10.1007/s11356-023-30961-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 11/05/2023] [Indexed: 11/28/2023]
Abstract
In the last few decades, U(VI) is a significant environmental threat. The innovative and environmentally friendly adsorbent materials for U(VI) removal were urgent. Preparation of the modified biochar from wheat straw by combined composites of MnFe2O4 nanoparticles and chitosan Schiff base (MnFe2O4@CsSB/BC) was characterized, and adsorption experiments were carried out to investigate the performance and interfacial mechanism of U(VI) removal. The results showed that MnFe2O4@CsSB/BC exhibited high adsorption capacity of U(VI) compared with BC. The adsorption process of U(VI) removal by MnFe2O4@CsSB/BC could be ascribed as pseudo-second-order model and Langmuir model. The maximum adsorption capacity of U(VI) removal by MnFe2O4@CsSB/BC reached 19.57 mg/g at pH4.0, 30 mg/L of U(VI), and 25 °C. The possible mechanism was a chemical adsorption process, and it mainly contained electrostatic attraction and surface complexation. Additionally, it also was an economic and environmental friendly adsorbent.
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Affiliation(s)
- Youdi Yuan
- School of Life and Environmental Science, Shaoxing University, Shaoxing, 312000, People's Republic of China
| | - Haixin Xia
- School of Life and Environmental Science, Shaoxing University, Shaoxing, 312000, People's Republic of China
| | - Weijuan Guo
- School of Life and Environmental Science, Shaoxing University, Shaoxing, 312000, People's Republic of China
| | - Binbin Huang
- School of Life and Environmental Science, Shaoxing University, Shaoxing, 312000, People's Republic of China
| | - Yujun Chen
- School of Life and Environmental Science, Shaoxing University, Shaoxing, 312000, People's Republic of China
| | - Muqing Qiu
- School of Life and Environmental Science, Shaoxing University, Shaoxing, 312000, People's Republic of China.
| | - Yuchun Wang
- Zhejiang Kunhe Environmental Protection Technology Co., Ltd., Shaoxing, 312000, People's Republic of China
| | - Baowei Hu
- School of Life and Environmental Science, Shaoxing University, Shaoxing, 312000, People's Republic of China
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Kasirajan P, Karunamoorthy S, Velluchamy M, Subramaniam K, Park CM, Sundaram GB. Fabrication of copper molybdate nanoflower combined polymeric graphitic carbon nitride heterojunction for water depollution: Synergistic photocatalytic performance and mechanism insight. ENVIRONMENTAL RESEARCH 2023; 233:116428. [PMID: 37352950 DOI: 10.1016/j.envres.2023.116428] [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: 04/08/2023] [Revised: 05/25/2023] [Accepted: 06/13/2023] [Indexed: 06/25/2023]
Abstract
In the scope, developed a novel copper molybdate decorated polymeric graphitic carbon nitride (CuMoO4@g-C3N4 or CMC) heterojunction nanocomposite in an easy solvothermal environment for the first time. The synthesized CMC improved the photocatalytic degradation of an antibiotic drug [ciprofloxacin (CIP)] and organic dye [Rhodamine B (RhB)]. Consequently, the CMC demonstrates a marvelous crystalline nature with ∼26 nm size, as obtained from XRD analysis. Besides, the surface morphology studies confirm the large-scale construction of flower-like CMC with a typical size of 10-15 nm. The CMC showed efficient catalytic activity for both the pollutants, achieving the degradation of 98% for RhB and 97% for CIP in 35 and 60 min, respectively. The reaction parameters including the concentration of pollutants, catalyst dosages, and scavengers are optimized for the best photocatalytic results. Notably, the trapping tests showed that the •OH and O2•- radicals are the primary oxidative species liable for the photocatalytic process. The recyclability test of the photocatalyst infers that the photocatalyst is highly stable up to the fifth recycle. Our work affords an efficient and ideal path to constructing the new g-C3N4-based architected photocatalyst for toxic wastewater treatment in the near future.
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Affiliation(s)
- Prakash Kasirajan
- Department of Chemistry, PSR Engineering College, Sivakasi, 626140, Tamil Nadu, India.
| | - Saravanakumar Karunamoorthy
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Muthuraj Velluchamy
- Department of Chemistry, V.H.N.S.N College (Autonomous), Virudhunagar, 626001, Tamil Nadu, India.
| | - Kalidass Subramaniam
- Department of Animal Science, Manonmaniam Sundaranar University, Thirunelveli, 627012, Tamil Nadu, India
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Ganesh Babu Sundaram
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.
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Wang Y, Zhong S, Niu Z, Dai Y, Li J. Synthesis and up-to-date applications of 2D microporous g-C 3N 4 nanomaterials for sustainable development. Chem Commun (Camb) 2023; 59:10883-10911. [PMID: 37622731 DOI: 10.1039/d3cc03550f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
In recent years, with the development of industrial technology and the increase of people's environmental awareness, the research on sustainable materials and their applications has become a hot topic. Among two-dimensional (2D) materials that have been selected for sustainable research, graphitic phase carbon nitride (g-C3N4) has become a hot research topic because of its many outstanding advantages such as simple preparation, good electrochemical properties, excellent photochemical properties, and better thermal stability. Nevertheless, the inherent limitations of g-C3N4 due to its relatively poor specific surface area, rapid charge recombination, limited light absorption range, and inferior dispersion in aqueous and organic media have limited its practical application. In the review, we summarize and analyze the unique structure of the 2D microporous nanomaterial g-C3N4, its synthesis method, chemical modification method, and the latest application examples in various fields in recent years, highlighting its advantages and shortcomings, with a view to providing ideas for overcoming the difficulties in its application. Furthermore, the pressing challenges faced by g-C3N4 are briefly discussed, as well as an outlook on the application prospects of g-C3N4 materials. It is expected that the review in this paper will provide more theoretical strategies for the future practical application of g-C3N4-based materials, as well as contributing to nanomaterials in sustainable applications.
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Affiliation(s)
- Yuanyuan Wang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China.
| | - Suyue Zhong
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China.
| | - Zhenhua Niu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China.
| | - Yangyang Dai
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China.
| | - Jian Li
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China.
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Ruan X, Wang L, Liang D, Shi Y. Environmental Applications of 3D g-C 3N 4-Based Hydrogel with Synergistic Effect of Adsorption and Photodegradation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:3371-3379. [PMID: 36809001 DOI: 10.1021/acs.langmuir.2c03260] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In this paper, g-C3N4-based hydrogel with a 3D network structure was synthesized via a simple and cheap reaction, using hydroxyethyl cellulose (HEC) and graphitic carbon nitride (g-C3N4) as the main materials. Electron microscope images revealed that the microstructure of g-C3N4-HEC hydrogel was rough and porous. The luxuriant scaly textures of this hydrogel were due to the uniform distribution of g-C3N4 nanoparticles. It was found that this hydrogel showed great removal ability of bisphenol A (BPA) through a synergistic effect of adsorption and photodegradation. The adsorption capacity and degradation efficiency of g-C3N4-HEC hydrogel (3%) for BPA were 8.66 mg/g and 78% under the conditions of C0 = 9.94 mg/L and pH = 7.0, which were much higher than those for the original g-C3N4 and HEC hydrogel. In addition, g-C3N4-HEC hydrogel (3%) exhibited excellent removal efficiency (98%) of BPA (C0 = 9.94 mg/L) in a dynamic adsorption and photodegradation system. Meanwhile, the mechanism of removal was investigated in depth. The superior batch and continuous removal capability of this g-C3N4-based hydrogel make it promising for environmental applications.
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Affiliation(s)
- Xian Ruan
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, China
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Luxiang Wang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Dongmin Liang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Yunqi Shi
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
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Ni2P-Modified P-Doped Graphitic Carbon Nitride Hetero-Nanostructures for Efficient Photocatalytic Aqueous Cr(VI) Reduction. Catalysts 2023. [DOI: 10.3390/catal13020437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
Targeting heterostructures with modulated electronic structures and efficient charge carrier separation and mobility is an effective strategy to improve photocatalytic performance. In this study, we report the synthesis of 2D/3D hybrid heterostructures comprising P-doped graphitic carbon nitride (g-C3N4) nanosheets (ca. 50–60 nm in lateral size) and small-sized Ni2P nanoparticles (ca. 10–12 nm in diameter) and demonstrate their prominent activity in the photocatalytic reduction of Cr(VI). Utilizing a combination of spectroscopic and electrochemical characterization techniques, we unveil the reasons behind the distinct photochemical performance of these materials. We show that Ni2P modification and P doping of the g-C3N4 effectively improve the charge-carrier transportation and spatial separation through the interface of Ni2P/P-doped g-C3N4 junctions. As a result, the catalyst containing 15 wt.% Ni2P exhibits superior photocatalytic activity in the detoxification of Cr(VI)-contaminated effluents under UV-visible light illumination, presenting an apparent quantum yield (QY) of 12.5% at 410 nm, notably without the use of sacrificial additives. This study marks a forward step in understanding and fabricating cost-effective photocatalysts for photochemical applications.
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Chen H, wang Y, Ye J, Chao Z, Zhu K, Yang H, Xu Z. Oxygen-doped protonated C3N4 nanosheet as particle electrode and photocatalyst to degrade dye by photoelectrocatalytic oxidation process. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Li S, Hasan N, Ma H, Li OL, Lee B, Jia Y, Liu C. Significantly enhanced photocatalytic activity by surface acid corrosion treatment and Au nanoparticles decoration on the surface of SnFe2O4 nano-octahedron. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121650] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hu J, Lu S, Ma J, Zhu F, Komarneni S. Composite of g-C 3N 4/ZnIn 2S 4 for efficient adsorption and visible light photocatalytic reduction of Cr(VI). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:76404-76416. [PMID: 35670937 DOI: 10.1007/s11356-022-21224-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
In this paper, the g-C3N4/ZnIn2S4 composite was synthesized by a two-stage hydrothermal method. The microstructure, surface, and optical properties of the composite were thoroughly characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) surface area analysis, and UV-Vis absorption spectroscopic analysis. The removal capacity of Cr(VI) was optimized by using ZnIn2S4 loaded in the composite. Meanwhile, the optimal pH environment for the reduction of Cr(VI) was determined to be about pH 3, and the reduction efficiency could reach more than 99% within 60 min. Further, the results of UV-Vis absorption analysis indicated the high and wide range of light absorption by composite compared with pure g-C3N4. Therefore, the enhanced photocatalytic performance of the composite could be attributed to the well-matched energy band structure between g-C3N4 and ZnIn2S4, which apparently promoted the effective separation and transfer of photogenerated carriers. In addition, the composite showed good stability in the visible light catalytic reaction, and the possible mechanism of the photocatalytic activity of Cr(VI) reduction by the composite was proposed.
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Affiliation(s)
- Jie Hu
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Songhua Lu
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Jianfeng Ma
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Fang Zhu
- School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Sridhar Komarneni
- Department of Ecosystem Science and Management and Materials Research Institute, 204 Energy and the Environment Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA.
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9
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Wang CC, Ren X, Wang P, Chang C. The state of the art review on photocatalytic Cr(VI) reduction over MOFs-based photocatalysts: From batch experiment to continuous operation. CHEMOSPHERE 2022; 303:134949. [PMID: 35577127 DOI: 10.1016/j.chemosphere.2022.134949] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
This state of the art review presented the photocatalytic reduction from highly toxic Cr(VI) to lowly toxic Cr(III) with metal-organic frameworks (MOFs) and their composites. The construction of composites facilitated the transportation of the photo-induced charges to enhance the Cr(VI) reduction, in which the corresponding mechanisms were clarified by both experimental tests and DFT calculations. The immobilized MOFs onto some substrates accomplished continuous operations toward Cr(VI) reduction even under real solar light. As well, the environmental applications of the Cr(VI) reduction were analyzed, in which the influence factors toward the Cr(VI) reduction were clarified. This review reported that a big breakthrough was achieved from the batch experiment to the continuous operation for Cr(VI) reduction, in which MOFs demonstrated a bright prospective in the field of photocatalytic Cr(VI) reduction.
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Affiliation(s)
- Chong-Chen Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China.
| | - Xueying Ren
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Peng Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Cheng Chang
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
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10
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Structures, electronic and magnetic properties of the FexNy (x = 1–4, y = 1–4) adsorbed graphene. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04823-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Chen L, Su G, Wang C, Dang L, Wei H. S-scheme heterojunction BP/WO3 with tight interface firstly prepared in magnetic stirring reactor for enhanced photocatalytic degradation of hazardous contaminants under visible light. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120986] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Solar light induced photocatalytic process for reduction of hexavalent chromium and degradation of tetracycline and methylene blue by heterostructures made of SnS2 nanoplates surface modified by ZnWO4 nanorods. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121040] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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13
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Visible light photocatalytic reduction of Cr(VI) over polyimide in the presence of small molecule carboxylic acids. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128657] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Li X, Wu Q, Hussain M, Chen L, Huang Q, Huang W, Tao T. Sodium alkoxide-mediated g-C 3N 4 immobilized on a composite nanofibrous membrane for preferable photocatalytic activity. RSC Adv 2022; 12:15378-15384. [PMID: 35693247 PMCID: PMC9121215 DOI: 10.1039/d2ra02441a] [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: 04/16/2022] [Accepted: 05/16/2022] [Indexed: 11/21/2022] Open
Abstract
g-C3N4 is a classic photocatalyst not only owing to the metal-free semiconducting electronic structure but also tunable multifunctional properties. However, strategies for chemical exfoliation of g-C3N4 based on organic bases have been rarely reported. A family of sodium alkoxide-mediated g-C3N4 has been prepared via a simple synthesis. The degradation rate of bulk g-C3N4 is 39.8% when irradiation lasts 140 minutes. However, the degradation rate of g-C3N4-MeONa, g-C3N4-EtONa, and g-C3N4- t BuONa is 55.1%, 68.6%, and 79.1%, respectively, under the same conditions. Furthermore, g-C3N4- t BuONa has been immobilized on flexible electrospun PAN nanofibers to prepare floating photocatalysts. SEM analysis shows that the paper-based photocatalyst PAN/g-C3N4- t BuONa becomes a nanofiber membrane (A4 size, 210 mm × 297 mm). The nanofiber is approximately 350 nm in diameter. Interestingly, once synthesized, the g-C3N4- t BuONa particles move into the spinning solution, where the nanofiber wraps around them to form a monodisperse structure that resembles beads, or knots of 1-2 μm, on a string. The degradation efficiency of 10 mg L-1 MB solution can reach 100% for 2 hours until the solution becomes colorless. In addition, the photocatalytic mechanism studies have been validated. Different from H2SO4 or HNO3, this work has proposed a facile strategy for designing preferable floating photocatalysts using sodium alkoxide.
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Affiliation(s)
- Xue Li
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics, Nanjing University of Information Science and Technology (NUIST) Nanjing 210044 P. R. China
- Jiangsu Collaborative Innovation Centre of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology Nanjing 210044 P. R. China
| | - Qin Wu
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics, Nanjing University of Information Science and Technology (NUIST) Nanjing 210044 P. R. China
- Jiangsu Collaborative Innovation Centre of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology Nanjing 210044 P. R. China
| | - Mushraf Hussain
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics, Nanjing University of Information Science and Technology (NUIST) Nanjing 210044 P. R. China
- Reading Academy, NUIST-UoR International Research Institute Nanjing 210044 P. R. China
| | - Liang Chen
- Jiangsu Collaborative Innovation Centre of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology Nanjing 210044 P. R. China
| | - Qiong Huang
- Jiangsu Collaborative Innovation Centre of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology Nanjing 210044 P. R. China
| | - Wei Huang
- State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210093 P. R. China
| | - Tao Tao
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics, Nanjing University of Information Science and Technology (NUIST) Nanjing 210044 P. R. China
- Reading Academy, NUIST-UoR International Research Institute Nanjing 210044 P. R. China
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15
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Rapid high-temperature hydrothermal post treatment on graphitic carbon nitride for enhanced photocatalytic H2 evolution. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.03.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Modwi A, Khezami L, Ghoniem MG, Nguyen-Tri P, Baaloudj O, Guesmi A, AlGethami FK, Amer MS, Assadi AA. Superior removal of dyes by mesoporous MgO/g-C 3N 4 fabricated through ultrasound method: Adsorption mechanism and process modeling. ENVIRONMENTAL RESEARCH 2022; 205:112543. [PMID: 34915029 DOI: 10.1016/j.envres.2021.112543] [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: 09/06/2021] [Revised: 11/30/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
The present research concerns the synthesis of a mesoporous composite characterized with high surface area and superior adsorption capacity in order to investigate its efficacity in removing hazardous and harmful dyes molecules from water. The synthesized mesoporous composite, MgO/g-C3N4 (MGCN), was successfully prepared through the sonication method in a methanolic solution followed by an evaporation and a calcination process. The configuration, crystalline phase, surface properties, chemical bonding, and morphological study of the fabricated nanomaterials were investigated via XRD, BET, FESEM, HRTEM, XPS, and FTIR instrumentation. The obtained nanomaterials were used as sorbents of Congo Red (CR) and Basic Fuchsin (BF) dyes from aqueous solutions. Batch elimination experimental studies reveal that the elimination of CR and BF dyes from an aqueous solution onto the MGCN surface was pH-dependent. The highest removal of CR and BF pollutants occurs, respectively, at pH 5 and 7. The absorptive elimination of CR and BF dyes into the MGCN surface was well-fitted with a pseudo-second-order kinetics and Langmuir model. In this concern, the maximum nanocomposite elimination capacity for CR and BF was observed to be 1250 and 1791 mg g-1, respectively. This investigation confirms that MGCN composite is an obvious and efficient adsorbent of CR, BF, and other organic dyes from wastewater.
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Affiliation(s)
- A Modwi
- Department of Chemistry, College of Science and Arts, Qassim University, Ar Rass, Saudi Arabia
| | - L Khezami
- Imam Mohammad Ibn Saud Islamic University (IMSIU), College of Science, Chemistry Department, Riyadh, Saudi Arabia
| | - M G Ghoniem
- Imam Mohammad Ibn Saud Islamic University (IMSIU), College of Science, Chemistry Department, Riyadh, Saudi Arabia
| | - P Nguyen-Tri
- Laboratory of Advanced Materials for Energy and Environment, University Du Quebec Trois-Rivieres (UQTR), 3351, C.P. 500, Trois-Rivieres, Quebec, G9A 5H7, Canada.
| | - O Baaloudj
- Laboratory of Reaction Engineering, Faculty of Mechanical Engineering and Process Engineering USTHB, BP 32, Algiers, Algeria
| | - A Guesmi
- Imam Mohammad Ibn Saud Islamic University (IMSIU), College of Science, Chemistry Department, Riyadh, Saudi Arabia
| | - F K AlGethami
- Imam Mohammad Ibn Saud Islamic University (IMSIU), College of Science, Chemistry Department, Riyadh, Saudi Arabia
| | - M S Amer
- Electrochemical Sciences Research Chair (ESRC), Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - A A Assadi
- Univ Rennes, ENSCR / UMR CNRS 6226, 11 Allée de Beaulieu, 35700, Rennes, France
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17
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Iron Carbon Catalyst Initiated the Generation of Active Free Radicals without Oxidants for Decontamination of Methylene Blue from Waters. Catalysts 2022. [DOI: 10.3390/catal12040388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In conventional oxidation technologies for treatment of contaminated waters, secondary pollution of the aqueous environment often occurs because of the additional oxidants generated during the process. To avoid this problem, Fe/NG catalyst composites without additives were developed in this study for decontamination of methylene blue (MB) from waters. The Fe/NG catalyst, composed of carbon nitride and iron chloride (FeCl3·6H2O), was prepared by high temperature pyrolysis. It is an exceptionally efficient, recoverable, and sustainable catalyst for degradation of organic matter. The morphological characteristics, chemical structure, and surface properties of the catalyst composites were investigated. The catalyst exhibited high MB removal efficiency (100%) within 30 min under ambient temperature and dark conditions. The experiments indicated that an MB degradation effect was also applicable under most acid–base conditions (pH = 2–10). The characterization results using electron spin resonance and analysis of intermediate products demonstrated that free radicals such as ·OH and ·O2− were produced from the Fe/NG composites in the heterogeneous system, which resulted in the high MB degradation efficiency. Moreover, the catalysis reaction generated reducing substances, triggering iron carbon micro-electrolysis to spontaneously develop a microcurrent, which assisted the degradation of MB. This study demonstrates the feasibility of Fe/NG catalysts that spontaneously generate active species for degrading pollutants in an aqueous environment at normal temperature, providing an attractive approach for treating organic-contaminated waters.
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Bahadoran A, Khoshnoudi Jabarabadi M, Hameed Mahmood Z, Bokov D, Jushi Janani B, Fakhri A. Quick and sensitive colorimetric detection of amino acid with functionalized-silver/copper nanoparticles in the presence of cross linker, and bacteria detection by using DNA-template nanoparticles as peroxidase activity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 268:120636. [PMID: 34890872 DOI: 10.1016/j.saa.2021.120636] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 10/20/2021] [Accepted: 11/12/2021] [Indexed: 06/13/2023]
Abstract
In this project, poly (citric acid) (PCA) functionalized on nano Ag/Cu was synthesized by chemical analysis method. The nano probe was applied to detection of cysteine by using the magnesium (II) ions as a cross linker. The characterization of Ag/Cu/PCA nano probe was studied by using the UV-visible, morphological microscopy, dynamic light scattering, and zeta potential analyzer. The zeta potential and size of Ag/Cu/PCA were -38.0 mV and 18.0 nm, respectively. The prepared nano probe shows rapid response for detection of cysteine. The detection limit of Ag/Cu/PCA nano probe was 0.07 nM. Additional, the Ag/Cu/PCA nanoparticles was applied to cysteine detection from real samples in the presence of amino acids compounds. Rapidly and sensitive determination of Streptococcus pneumoniae is substantial for food safety and human health. The DNA-Ag/Cu/PCA were prepared as a template in chemical method and experimented as a bio-receptor for the cell bacteria detection as peroxidase-like catalytic process. The DNA-Ag/Cu/PCA nano probe shows a linear dynamic concertation range of Streptococcus pneumoniae via detection limit about 65 CFU/mL. The project presents that the DNA-Ag/Cu/PCA could detect the biological and bacterial samples via high accuracy.
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Affiliation(s)
- Ashkan Bahadoran
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
| | | | | | - Dmitry Bokov
- Institute of Pharmacy, Sechenov First Moscow State Medical University, 8 Trubetskaya St., bldg. 2, Moscow 119991, Russian Federation; Laboratory of Food Chemistry, Federal Research Center of Nutrition, Biotechnology and Food Safety, 2/14 Ustyinsky pr., Moscow 109240, Russian Federation
| | | | - Ali Fakhri
- Department of Biological Sciences, King Abdulaziz University, Jeddah, Saudi Arabia; Nanotechnology Laboratory, Nano Smart Science Institute, Tehran, Iran
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19
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Adsorption performance and mechanism of g-C3N4/UiO-66 composite for U(VI) from aqueous solution. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-021-08116-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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One-pot synthesis of the direct Z-scheme AgInS2/AgIn5S8 QDs heterojunction for efficient photocatalytic reduction of Cr6+ in neutral condition. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127762] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Motora KG, Wu CM, Naseem S. Magnetic recyclable self-floating solar light-driven WO2.72/Fe3O4 nanocomposites immobilized by Janus membrane for photocatalysis of inorganic and organic pollutants. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.06.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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22
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Ye S, Feng C, Wang J, Tang L. Preparation and application of defective graphite phase carbon nitride photocatalysts. CHINESE SCIENCE BULLETIN-CHINESE 2021. [DOI: 10.1360/tb-2020-1674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Modification of ZnFe2O4 by conjugated polyvinyl chloride derivative for more efficient photocatalytic reduction of Cr(VI). J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130734] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Xu H, Ye Q, Zhang J, Li Q, Wang M, Zhou P, Zhou G, Wang Q. Oxygen functionalized g-C 3N 4 strengthen Fe(III)/H 2O 2 system by accelerating Fe(III)/Fe(II) cycles under natural solar light: A mutual-promoting configuration. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 778:146280. [PMID: 34030394 DOI: 10.1016/j.scitotenv.2021.146280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 02/14/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
In response to the inherent restriction of low Fe(II) regeneration in the Fenton process, this study demonstrated a mutual-promoting configuration, where oxygen functionalized g-C3N4 (OCN) was applied in Fe(III)/H2O2 system to utilize mild natural solar light (SL) for persistent Fe(II) generation. The constructed OCN/Fe(III)/H2O2/SL system exhibited strong adaptability to various pollutants, and it well outperformed the g-C3N4 (GCN) modified system and the traditional Fenton system in pollutants degradation efficiency. Compared with GCN, OCN could significantly promote the Fe(II) generation under solar light (SL), leading to more efficient H2O2 activation. The characterization analyses revealed the larger surface area and enhanced charge separation of OCN, which were considered to take main responsibility for its enhanced photoactivity. The complexation of Fe(III) with the carboxyl groups of OCN also benefited the Fe(II) generation. ·OH was detected as the dominant radical responsible for metronidazole (MNZ) degradation, and its production in the OCN modified system was about twice that in the GCN modified system and the Fenton system. Moreover, the precipitation of FeOx on the OCN surface benefited the charge separation of the OCN, so that the improved OCN enabled a slight enhancement of MNZ degradation in the reuse experiments. The intermediates of MNZ degradation were analyzed based on the results of LC-MS, which provided insight into MNZ degradation pathways. This work highlighted the concept of self-improving photocatalyst, the ingenious combination of photocatalysis and Fenton-like system formed a mutual-promoting situation where the OCN and the Fenton-like system could both be improved, which endowed the configuration great potential for green and economical oxidation in environmental remediation.
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Affiliation(s)
- Hao Xu
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Qian Ye
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Jing Zhang
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Qiansong Li
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Meijing Wang
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Peng Zhou
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Guanyu Zhou
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Qingguo Wang
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, PR China.
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25
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Zhang F, Shen L, Li J, Zhang Y, Wang G, Zhu A. Room temperature photocatalytic deposition of Au nanoparticles on SnS2 nanoplates for enhanced photocatalysis. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.01.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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26
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Ma S, Pan LG, You T, Wang K. g-C 3N 4/Fe 3O 4 Nanocomposites as Adsorbents Analyzed by UPLC-MS/MS for Highly Sensitive Simultaneous Determination of 27 Mycotoxins in Maize: Aiming at Increasing Purification Efficiency and Reducing Time. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:4874-4882. [PMID: 33861062 DOI: 10.1021/acs.jafc.1c00141] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
According to known studies, numerous mycotoxins have been found simultaneously in foods and have a certain expansion toxicity, so the simultaneous detection of multiple mycotoxins is absolutely critical. In this article, multifunctional magnetic g-C3N4/Fe3O4 nanocomposites have been fabricated to employ as modified QuEChERS adsorbents. In addition, they were also used in conjunction with ultrahigh-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), an accurate quantitative approach, to analyze 27 mycotoxins in maize. The improved method not only has a powerful adsorption effect on the complex matrix by g-C3N4/Fe3O4 but also enables magnetic separation from the sample solution. Experiments proved that this method can exhibit good linearity under the appropriate and optimal external environment (r2 ≥ 0.9954), high sensitivity (the threshold of detection limit is 0.0004-0.6226 μg kg-1, and the threshold of quantification limit is 0.0014-2.0753 μg kg-1), adequate recoveries (77.81-115.21%), and excellent repeatability (with a threshold of intraday precision of 1.5-10.8% and interday precision in the range of 2.9-12.5%). In practice this method has been used to evaluate a variety of mycotoxins in maize specimens, and certain actual outcomes have been achieved.
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Affiliation(s)
- Shuai Ma
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
- Beijing Research Center for Agricultural Standards and Testing, No. 9 Middle Road of Shu guang hua yuan, Haidian District, Beijing, 100097, P.R. China
| | - Li Gang Pan
- Beijing Research Center for Agricultural Standards and Testing, No. 9 Middle Road of Shu guang hua yuan, Haidian District, Beijing, 100097, P.R. China
| | - Tianyan You
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.R. China
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Hosseini SG, Pasikhani JV. Enhanced optical properties and photocatalytic activity of TiO 2 nanotubes by using magnetic activated carbon: evaluating photocatalytic reduction of Cr(VI). ENVIRONMENTAL TECHNOLOGY 2021; 42:914-931. [PMID: 31378151 DOI: 10.1080/09593330.2019.1649466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 07/21/2019] [Indexed: 06/10/2023]
Abstract
In recent years, photocatalytic reduction of Cr(VI) to Cr(III) by TiO2 nanostructures, as a potent environmental technology has attracted a lot of attention. However, several defects including the large band gap energy of TiO2, fast photogenerated charge recombination and re-oxidation of Cr(III) restrict their practical application. In this work, the incorporation of TiO2 nanotubes (TNTs) with magnetic activated carbon (MAC) and photoreduction in the presence of a hole scavenger were studied as a preferable approach. The results revealed that coupling TNTs with 2 wt% MAC can boost the surface area from 89.54 to 307.87 m2 g-1 as well as decrease the band gap energy from 3.1 to 2.7 eV. As a consequence of the enhancement in textural features and optical properties, TNTs/MAC (2%) led to improvement of photoreduction efficiency (from 47% to 66%) in comparison with the TNTs. Meanwhile, the experiments demonstrated that using 0.2 g TNTs/MAC as an optimal dosage in acidic solution increases the photoreduction efficiency up to 81%. The hole scavenger investigation had a marvellous result. It was found that in the presence of oxalic acid, TNTs/MAC (2%) could reduce 97% of Cr(VI) which it was due to trapping oxidative species and charge-transfer-complex-mediated process. Furthermore, the kinetic study affirmed that the photoreduction follow first-order kinetics and the reaction rate constants by TNTs/MAC (2%) are 1.5 times as great as those of TNTs. Moreover, the reusability tests illustrated TNTs/MAC (2%) has good stability and is active even up to the six runs.
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28
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Bankole OM, Olorunsola TD, Ogunlaja AS. Photocatalytic decontamination of toxic hexavalent chromium in water over graphitic carbon nitride supported sulfur nanoparticles. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112934] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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An DS, Zeng HY, Xiao GF, Xiong J, Chen CR, Hu G. Cr(VI) reduction over Ag3PO4/g-C3N4 composite with p-n heterostructure under visible-light irradiation. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.12.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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30
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Wang F, Lei W, Pan X, Ye Z. Facile synthesis of graphitic carbon nitride via copolymerization of melamine and TCNQ for photocatalytic hydrogen evolution. NANOTECHNOLOGY 2020; 31:475406. [PMID: 32570221 DOI: 10.1088/1361-6528/ab9ed7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Graphitic carbon nitride (g-C3N4) has been regarded as an intriguing photocatalyst applying to hydrogen generation but suffering rapid recombination of photoinduced electron-hole pairs and insufficient absorption under visible light. We developed a novel one-pot thermal copolymerization method of melamine as a precursor and 7,7,8,8-tetracyanoquinodimethane (TCNQ) as a comonomer to synthesize modified g-C3N4 (abbreviated as X% TCNQ) for the first time, aiming to directly incorporate TCNQ molecular into carbon nitride skeleton for the substitution of low-electronegative carbon for high-electronegative nitride atom. Results revealed that the as-prepared photocatalysts by copolymerization of melamine with TCNQ retained the original framework of g-C3N4, and dramatically altered the electronic and optical properties of carbon nitride. Various measurements confirmed that as-synthesized samples exhibited larger specific surface areas, faster photogenerated charge transfer and broader optical absorption by decreasing the π-deficiency and extending the π-conjugated system, thus facilitating the photocatalytic activity. Specifically, the 0.3% TCNQ exhibited as high as seven times than the pristine g-C3N4 on photocatalytic H2 generation and kept its photoactivity for five circles. This work highlights a feasible approach of chemical protocols for the molecular design to synthesize functional carbon nitride photocatalysts by copolymerizing appropriate g-C3N4 precursor and comonomers.
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Affiliation(s)
- Fengzhi Wang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Weisheng Lei
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Xinhua Pan
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Zhizhen Ye
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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31
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Bai X, Wang X, Lu X, Liang Y, Li J, Wu L, Li H, Hao Q, Ni BJ, Wang C. Surface defective g-C 3N 4-xCl x with unique spongy structure by polarization effect for enhanced photocatalytic removal of organic pollutants. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122897. [PMID: 32516728 DOI: 10.1016/j.jhazmat.2020.122897] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/22/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
Natural sponge is an ancient marine organism with a single lamellar structure, on which there are abundant porous channels to compose full-fledged spatial veins. Illumined by the natural spongy system, herein, the Cl doped surface defective graphite carbon nitride (g-C3N4-xClx) was constructed through microwave etching. In this process, microwave with HCl was employed to produce surface defects and peel bulk g-C3N4 to form natural spongy structured g-C3N4-xClx with three-dimensional networks. The spongy structure of the photocatalyst could provide abundant and unobstructed pathways for the transfer and separation of electron-hole pairs, and it was beneficial for photocatalytic reaction. The spongy defective g-C3N4-xClx achieved excellent degradation of diclofenac sodium (100%), bisphenol A (88.2%), phenol (85.7%) and methylene blue (97%) solution under simulated solar irradiation, respectively. The chlorine atoms were introduced into the g-C3N4 skeleton in microwave field with HCl, forming C-Cl bonds and surface polarization field, which could significantly accelerate the separation of photogenerated electrons and holes. As an efficient and universal approach, microwave etching can be generally used to create surface defects for most photocatalysts, which may have potential applications in environmental purification, energy conversion and photodynamic therapy.
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Affiliation(s)
- Xiaojuan Bai
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Advanced Innovation Center For Future Urban Design, Beijing, 100044, China.
| | - Xuyu Wang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Xiongwei Lu
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Yunjie Liang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Junqi Li
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Advanced Innovation Center For Future Urban Design, Beijing, 100044, China
| | - Liyuan Wu
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Advanced Innovation Center For Future Urban Design, Beijing, 100044, China
| | - Haiyan Li
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Advanced Innovation Center For Future Urban Design, Beijing, 100044, China.
| | - Qiang Hao
- Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology Sydney (UTS), Sydney, NSW 2007, Australia
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology Sydney (UTS), Sydney, NSW 2007, Australia
| | - Chongchen Wang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
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32
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Enhancement of organic contaminants degradation at low dosages of Fe(III) and H2O2 in g-C3N4 promoted Fe(III)/H2O2 system under visible light irradiation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117333] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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33
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Majdoub M, Anfar Z, Amedlous A. Emerging Chemical Functionalization of g-C 3N 4: Covalent/Noncovalent Modifications and Applications. ACS NANO 2020; 14:12390-12469. [PMID: 33052050 DOI: 10.1021/acsnano.0c06116] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Atomically 2D thin-layered structures, such as graphene nanosheets, graphitic carbon nitride nanosheets (g-C3N4), hexagonal boron nitride, and transition metal dichalcogenides are emerging as fascinating materials for a good array of domains owing to their rare physicochemical characteristics. In particular, graphitic carbon nitride has turned into a hot subject in the scientific community due to numerous qualities such as simple preparation, electrochemical properties, high adsorption capacity, good photochemical properties, thermal stability, and acid-alkali chemical resistance, etc. Basically, g-C3N4 is considered as a polymeric material consisting of N and C atoms forming a tri-s-triazine network connected by planar amino groups. In comparison with most C-based materials, g-C3N4 possesses electron-rich characteristics, basic moieties, and hydrogen-bonding groups owing to the presence of hydrogen and nitrogen atoms; therefore, it is taken into account as an interesting nominee to further complement carbon in applications of functional materials. Nevertheless, g-C3N4 has some intrinsic limitations and drawbacks mainly related to a relatively poor specific surface area, rapid charge recombination, a limited light absorption range, and a poor dispersibility in both aqueous and organic mediums. To overcome these shortcomings, numerous chemical modification approaches have been conducted with the aim of expanding the range of application of g-C3N4 and enhancing its properties. In the current review, the comprehensive survey is conducted on g-C3N4 chemical functionalization strategies including covalent and noncovalent approaches. Covalent approaches consist of establishing covalent linkage between the g-C3N4 structure and the chemical modifier such as oxidation/carboxylation, amidation, polymer grafting, etc., whereas the noncovalent approaches mainly consist of physical bonding and intermolecular interaction such as van der Waals interactions, electrostatic interactions, π-π interactions, and so on. Furthermore, the preparation, characterization, and diverse applications of functionalized g-C3N4 in various domains are described and recapped. We believe that this work will inspire scientists and readers to conduct research with the aim of exploring other functionalization strategies for this material in numerous applications.
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Affiliation(s)
- Mohammed Majdoub
- Laboratory of Materials, Catalysis & Valorization of Natural Resources, Hassan II University, Casablanca 20000, Morocco
| | - Zakaria Anfar
- Laboratory of Materials & Environment, Ibn Zohr University, Agadir 80000, Morocco
- Institute of Materials Science of Mulhouse, Haute Alsace University, Mulhouse 68100, France
- Strasbourg University, Strasbourg 67081, France
| | - Abdallah Amedlous
- Laboratory of Materials, Catalysis & Valorization of Natural Resources, Hassan II University, Casablanca 20000, Morocco
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Zhang M, Li X, Fan S, Yin Z, Li J, Zeng L, Tadé MO, Liu S. Novel Two-Dimensional AgInS 2/SnS 2/RGO Dual Heterojunctions: High Spatial Charge and Toxicity Evaluation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9709-9718. [PMID: 32787058 DOI: 10.1021/acs.langmuir.0c01072] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A single semiconductor employed into photo(electro)catalysis is not sufficient for charge carrier separation. Designing a multiple heterojunction system is a practical method for photo(electro)catalysis. Herein, novel two-dimensional AgInS2/SnS2/RGO (AISR) photocatalysts with multiple junctions were prepared by a simple hydrothermal method. The synthesized AISR heterojunctions showed superior photoelectrochemical performance and photocatalytic degradation of norfloxacin, with a high degradation rate reaching 95%. More importantly, the toxicity of photocatalytic products decreased within the reaction process. High spatial separation efficiency of photogenerated electron-hole pairs was evidenced by optical and photoelectrochemical characterizations. Furthermore, a laser flash photolysis technique was carried on investigating the lifetime of the charge carrier of the fabricated dual heterostructures. In addition, sulfur and oxygen vacancies existed in AISR heterojunctions could largely constrain the recombination of electron-hole pairs. Density functional theory calculations were carried out to analyze the mechanism of photoinduced interfacial redox reactions, showing that reduced graphene oxide and AgInS2 act as electron and hole trappers in the photocatalytic reaction, respectively. Due to the interfacial electric field formed from AISR dual heterojunctions, the effective spatial charge separation and transfer contributed to the boosting photo(electro)catalytic performance.
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Affiliation(s)
- Mingmei Zhang
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xinyong Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
- Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Shiying Fan
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhifan Yin
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jianan Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Libin Zeng
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Moses O Tadé
- Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Shaomin Liu
- Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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35
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Feng Y, Shen M, Xie Z, Chen P, Zuo LZ, Yao K, Lv W, Liu G. Photochemical transformation of C 3N 4 under UV irradiation: Implications for environmental fate and photocatalytic activity. JOURNAL OF HAZARDOUS MATERIALS 2020; 394:122557. [PMID: 32272327 DOI: 10.1016/j.jhazmat.2020.122557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
In this study, the photo-transformations of bulk C3N4 (CN) and oxidized C3N4 (OCN) under UV-irradiation were examined. Through NO3- release measurements, we found that the photo-transformation rate of OCN is higher than that of CN. Various characterization results revealed the structural and chemical properties changes of CN and OCN after photo-transformation. We proposed that under reactive oxygen species attack, CN and OCN were gradually broken into smaller fragments and finally mineralized into NO3-, CO2, and H2O through the circular reactions of deamination-hydroxylation-decarboxylation. Through the zeta potential measurements and sedimentation experiments, the influence of photo-transformation on the water stabilities of CN and OCN were assessed. The stability of CN in water increased while the water stability of OCN decreased after photo-transformation, implying that the changes to C3N4-based materials caused by photo-transformation may significantly impact their environmental behaviors. Moreover, the photocatalytic activities of the photo-transformed OCN and CN substantially decreased, indicating that the structural changes might be the main reason for their photocatalytic activity loss. These findings highlight the non-negligible influence of photo-transformation on the fate of C3N4 in aquatic environments, as well as on the photochemical stability during its use.
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Affiliation(s)
- Yiping Feng
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Mengyao Shen
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhijie Xie
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Ping Chen
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Lin-Zi Zuo
- Analysis and Test Center, Guangdong University of Technology, Guangzhou 510006, China
| | - Kun Yao
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Wenying Lv
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Guoguang Liu
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
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36
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Zhou X, Wang Y, Wang Y, Zhang M, Gao H, Zhang X. Superior uniform carbon nanofibers@g-C 3N 4 core-shell nanostructures embedded by Au nanoparticles for high-efficiency photocatalyst. JOURNAL OF HAZARDOUS MATERIALS 2020; 388:121759. [PMID: 31831289 DOI: 10.1016/j.jhazmat.2019.121759] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 10/29/2019] [Accepted: 11/24/2019] [Indexed: 06/10/2023]
Abstract
Ultrathin g-C3N4 nanolayers were uniformly assembled on Au nanoparticles (NPs) decorated carbon nanofiber (CNFs) by a facile gas-solid approach. The mean thickness of g-C3N4 shell layers on CNFs-Au supports was about 22.5 nm. The ternary system of as-prepared photocatalysts with superior uniformly core-shell nanostructures present enhanced photocatalytic properties. The rate constants (rhodamine B and K2Cr2O7) of CNFs-Au@g-C3N4 were about 3.5 and 4.5 times of g-C3N4 powders, respectively. While the rate of H2-evolution was 2.3-fold of the physical mixture, when the loading amount of Au NPs was about 0.52 At.%. Their excellent photocatalytic activities were attributed to the advantages of their unique core-shell nanostructures and the synergy of the Au NPs as a high-efficiency electron conduction bridge and their surface plasmon resonance (SPR) effect. Moreover, the ternary systems of CNFs-Au@g-C3N4 present the gratifying cycling stability in photocatalytic reactions due to their ultra-long core-shell nanostructures. Our work provides a novel route for designing and constructing multicomponent photocatalyst in wastewater treatment and solar energy applications.
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Affiliation(s)
- Xuejiao Zhou
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Ye Wang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Yang Wang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Mingyi Zhang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, People's Republic of China.
| | - Hong Gao
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Xitian Zhang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, People's Republic of China.
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37
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First-principles calculations on the first row transition metals-substituted TMC6N7 clusters. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04137-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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38
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Chen DD, Yi XH, Zhao C, Fu H, Wang P, Wang CC. Polyaniline modified MIL-100(Fe) for enhanced photocatalytic Cr(VI) reduction and tetracycline degradation under white light. CHEMOSPHERE 2020; 245:125659. [PMID: 31864049 DOI: 10.1016/j.chemosphere.2019.125659] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 12/05/2019] [Accepted: 12/12/2019] [Indexed: 06/10/2023]
Abstract
The Z-scheme MIL-100(Fe)/PANI composite photocatalysts were facilely prepared from MIL-100(Fe) and polyaniline (PANI) by ball-milling, and were characterized by powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), UV-visible diffuse-reflectance spectrometry (UV-vis DRS), X-ray photoelectron spectroscopy (XPS) and photoluminescence emission spectrometry (PL). The photocatalytic activities of MIL-100(Fe)/PANI composites were investigated via tetracycline degradation and hexavalent chromium reduction in aqueous solution under the irradiation of white light. The results revealed that the MIL-100(Fe)/PANI composite photocatalysts exhibited outstanding photocatalytic activities toward Cr(VI) reduction and tetracycline decomposition. The effects of pH and coexisting ions on the photocatalytic Cr(VI) reduction were investigated. As well, the primary active species were identified via electron spin resonance (ESR) determination. A possible Z-scheme photocatalyst mechanism was proposed and verified. Finally, MIL-100(Fe)/PANI composites demonstrated good reusability and stability in water solution, implying potentially practical applications for real wastewater treatment.
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Affiliation(s)
- Dan-Dan Chen
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Xiao-Hong Yi
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Chen Zhao
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Huifen Fu
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Peng Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Chong-Chen Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China.
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39
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Jin Q, Xie G, Cai X, Hu X, Wang H, Qiu G, Wang W, Zhou D, Huo H, Tan X, Zhao Y. Three-dimensional microspheric g-C 3N 4 coupled by Broussonetia papyrifera biochar: facile sodium alginate immobilization and excellent photocatalytic Cr(iv) reduction. RSC Adv 2020; 10:6121-6128. [PMID: 35495994 PMCID: PMC9049492 DOI: 10.1039/c9ra09981f] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 01/14/2020] [Indexed: 11/21/2022] Open
Abstract
Photocatalysts comprising Broussonetia papyrifera biochar and g-C3N4 loaded on sodium alginate were prepared and characterized in terms of reusability and photocatalytic Cr(vi) reduction performance. The observed photocurrent responses as well as photoluminescence and UV-visible diffuse reflectance spectra showed that the best-performing catalyst featured the benefits of efficient photogenerated charge separation, superior electron conductance/transfer, and excellent light adsorption ability, which resulted in a higher photocatalytic Cr(vi) reduction performance compared to that of pure g-C3N4 powder. The prepared composite was shown to be reusable and well separable from the reaction mixture, thus being a promising material for the practical photocatalytic removal of Cr(vi) from wastewater. The trapping experiment and XPS spectra of catalysts after reactions confirm that the decontamination of Cr(vi) lies in the photocatalytic reduction of this species into low-toxicity Cr(iii) by photoinduced electrons generated from g-C3N4, followed by the adsorption of Cr(iii) on biochar or alginate with large specific areas.
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Affiliation(s)
- Qi Jin
- Faculty of Life Science and Technology, Central South University of Forestry and Technology Changsha 410004 P.R. China +8613548945666
| | - Guangyu Xie
- College of Environmental Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P.R. China +8615243694564
| | - Xiaoxi Cai
- College of Art and Design, Hunan First Normal University Changsha 410205 P.R. China
| | - Xinjiang Hu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P.R. China +8615243694564
| | - Hui Wang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P.R. China +8615243694564
| | - Guoqiang Qiu
- Faculty of Life Science and Technology, Central South University of Forestry and Technology Changsha 410004 P.R. China +8613548945666
| | - Weixuan Wang
- College of Geography and Environmental Science, Northwest Normal University Lanzhou 730070 P.R. China
| | - Daixi Zhou
- College of Environmental Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P.R. China +8615243694564
| | - Huiwen Huo
- College of Environmental Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P.R. China +8615243694564
| | - Xiaofei Tan
- College of Environmental Science and Engineering, Hunan University Changsha 410082 P.R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education Changsha 410082 P.R. China
| | - Yunlin Zhao
- Faculty of Life Science and Technology, Central South University of Forestry and Technology Changsha 410004 P.R. China +8613548945666
- College of Environmental Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P.R. China +8615243694564
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40
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Structures and electronic and magnetic properties of the 3d transition metal-substituted TMC5N8 clusters. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04080-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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41
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Jia L, Cheng X, Wang X, Cai H, He P, Ma J, Li L, Ding Y, Fan X. Large-Scale Preparation of g-C3N4 Porous Nanotubes with Enhanced Photocatalytic Activity by Using Salicylic Acid and Melamine. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04761] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Lan Jia
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Xiangxiang Cheng
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Xiaona Wang
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - He Cai
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Pan He
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Jingyi Ma
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Linli Li
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Yong Ding
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Xiaoxing Fan
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
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Tremblay PL, Xu M, Chen Y, Zhang T. Nonmetallic Abiotic-Biological Hybrid Photocatalyst for Visible Water Splitting and Carbon Dioxide Reduction. iScience 2019; 23:100784. [PMID: 31962238 PMCID: PMC6971392 DOI: 10.1016/j.isci.2019.100784] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/22/2019] [Accepted: 12/12/2019] [Indexed: 12/14/2022] Open
Abstract
Both artificial photosystems and natural photosynthesis have not reached their full potential for the sustainable conversion of solar energy into specific chemicals. A promising approach is hybrid photosynthesis combining efficient, non-toxic, and low-cost abiotic photocatalysts capable of water splitting with metabolically versatile non-photosynthetic microbes. Here, we report the development of a water-splitting enzymatic photocatalyst made of graphitic carbon nitride (g-C3N4) coupled with H2O2-degrading catalase and its utilization for hybrid photosynthesis with the non-photosynthetic bacterium Ralstonia eutropha for bioplastic production. The g-C3N4-catalase system has an excellent solar-to-hydrogen efficiency of 3.4% with a H2 evolution rate up to 55.72 μmol h−1 while evolving O2 stoichiometrically. The hybrid photosynthesis system built with the water-spitting g-C3N4-catalase photocatalyst doubles the production of the bioplastic polyhydroxybutyrate by R. eutropha from CO2 and increases it by 1.84-fold from fructose. These results illustrate how synergy between abiotic non-metallic photocatalyst, enzyme, and bacteria can augment solar-to-multicarbon chemical conversion. H2O2-degrading enzymes from R. eutropha enable visible-light water splitting by C3N4 C3N4 coupled with bovine catalase has a solar-to-hydrogen efficiency of 3.4% C3N4-catalase increases CO2 conversion into bioplastic under light by R. eutropha Heterotrophic bioplastic production by R. eutropha is also improved by C3N4-catalase
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Affiliation(s)
- Pier-Luc Tremblay
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China; School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, PR China
| | - Mengying Xu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China; School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, PR China; School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China
| | - Yiming Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China
| | - Tian Zhang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China; School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, PR China; School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China.
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43
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Wu HH, Chang CW, Lu D, Maeda K, Hu C. Synergistic Effect of Hydrochloric Acid and Phytic Acid Doping on Polyaniline-Coupled g-C 3N 4 Nanosheets for Photocatalytic Cr(VI) Reduction and Dye Degradation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:35702-35712. [PMID: 31532604 DOI: 10.1021/acsami.9b10555] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, graphitic carbon nitride (g-C3N4) nanosheets (CNns) were modified using polyaniline (PANI) codoped with an inorganic (hydrochloric acid, HCl) and an organic (phytic acid, PA) acid. Our results revealed that these samples exhibited extended visible-light absorption and a three-dimensional (3D) hierarchical structure with a large specific surface area. They also inhibited photoluminescence emission, reduced electrical resistance, and provided abundant free radicals, resulting in high photocatalytic performance. The PANI/g-C3N4 sample demonstrated outstanding photocatalytic activity of a Cr(VI) removal capacity of 4.76 mg·min-1·gc-1, which is the best record for the reduction of a 100 ppm K2Cr2O7 solution. Moreover, g-C3N4 coupled with PANI monotonically doped with HCl or PA did not demonstrate increased activity, suggesting that the codoping of HCl and PA plays a significant role in enhancing the performance. The improved photocatalytic activity of PANI/g-C3N4 can be attributed to the interchain and intrachain doping of PA and HCl over PANI, respectively, to create a 3D connected network and synergistically increase the electrical conductivity. Therefore, new insights into g-C3N4 coupled with PANI and codoped by HCl and PA may have excellent potential for the design of g-C3N4-based compounds for efficient photocatalytic reactions.
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Affiliation(s)
- Hsiao-Han Wu
- Department of Chemical Engineering, R&D Center for Membrane Technology and Luh Hwa Research Center for Circular Economy , Chung Yuan Christian University , Chungli District, Taoyuan City 32023 , Taiwan
| | - Chien-Wei Chang
- Department of Chemical Engineering, R&D Center for Membrane Technology and Luh Hwa Research Center for Circular Economy , Chung Yuan Christian University , Chungli District, Taoyuan City 32023 , Taiwan
| | - Daling Lu
- Suzukakedai Materials Analysis Division, Technical Department , Tokyo Institute of Technology , 4259 Nagatsuta-cho , Midori-ku, Yokohama 226-8503 , Japan
| | - Kazuhiko Maeda
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1-NE-2 Ookayama , Meguro-ku, Tokyo 152-8550 , Japan
| | - Chechia Hu
- Department of Chemical Engineering, R&D Center for Membrane Technology and Luh Hwa Research Center for Circular Economy , Chung Yuan Christian University , Chungli District, Taoyuan City 32023 , Taiwan
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Guo Y, Li C, Guo Y, Wang X, Li X. Ultrasonic-assisted synthesis of mesoporous g-C3N4/Na-bentonite composites and its application for efficient photocatalytic simultaneous removal of Cr(VI) and RhB. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123624] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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45
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Synergy of Photocatalysis and Adsorption for Simultaneous Removal of Hexavalent Chromium and Methylene Blue by g-C 3N 4/BiFeO 3/Carbon Nanotubes Ternary Composites. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16173219. [PMID: 31484371 PMCID: PMC6747399 DOI: 10.3390/ijerph16173219] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 11/17/2022]
Abstract
A novel graphite-phase carbon nitride (g-C3N4)/bismuth ferrite (BiFeO3)/carbon nanotubes (CNTs) ternary magnetic composite (CNBT) was prepared by a hydrothermal synthesis. Using this material, Cr(VI) and methylene blue (MB) were removed from wastewater through synergistic adsorption and photocatalysis. The effects of pH, time, and pollutant concentration on the photocatalytic performance of CNBT, as well as possible interactions between Cr(VI) and MB species were analyzed. The obtained results showed that CNTs could effectively reduce the recombination rate of electron-hole pairs during the photocatalytic reaction of the g-C3N4/BiFeO3 composite, thereby improving its photocatalytic performance, while the presence of MB increased the reduction rate of Cr(VI). After 5 h of the simultaneous adsorption and photocatalysis by CNBT, the removal rates of Cr(VI) and MB were 93% and 98%, respectively. This study provides a new theoretical basis and technical guidance for the combined application of photocatalysis and adsorption in the treatment of wastewaters containing mixed pollutants.
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46
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Guo Z, Zhao Q, Zhang Y, Li B, Li L, Feng L, Wang M, Meng X, Zuo G. A novel “turn‐on” fluorescent sensor for hydrogen peroxide based on oxidized porous g‐C
3
N
4
nanosheets. J Biomed Mater Res B Appl Biomater 2019; 108:1077-1084. [DOI: 10.1002/jbm.b.34459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/10/2019] [Accepted: 07/19/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Zhaoliang Guo
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan Hebei People's Republic of China
| | - Qiannan Zhao
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan Hebei People's Republic of China
| | - Yuqian Zhang
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan Hebei People's Republic of China
| | - Bingdong Li
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan Hebei People's Republic of China
| | - Lijuan Li
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan Hebei People's Republic of China
| | - Liwei Feng
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan Hebei People's Republic of China
| | - Manman Wang
- School of Public HealthNorth China University of Science and Technology Tangshan Hebei People's Republic of China
| | - Xianguang Meng
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan Hebei People's Republic of China
| | - Guifu Zuo
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan Hebei People's Republic of China
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Guo Z, Li B, Zhang Y, Zhao Q, Zhao J, Li L, Feng L, Wang M, Meng X, Zuo G. Acid‐treated Graphitic Carbon Nitride Nanosheets as Fluorescence Probe for Detection of Hemin. ChemistrySelect 2019. [DOI: 10.1002/slct.201901841] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Zhaoliang Guo
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan 063210
| | - Bingdong Li
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan 063210
| | - Yuqian Zhang
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan 063210
| | - Qiannan Zhao
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan 063210
| | - Jian Zhao
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan 063210
| | - Lijuan Li
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan 063210
| | - Liwei Feng
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan 063210
| | - Manman Wang
- School of Public HealthNorth China University of Science and Technology Tangshan 063210
| | - Xianguang Meng
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan 063210
| | - Guifu Zuo
- Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and Technology Tangshan 063210
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Durairaj A, Sakthivel T, Ramanathan S, Vasanthkumar S. Quenching-Induced Structural Distortion of Graphitic Carbon Nitride Nanostructures: Enhanced Photocatalytic Activity and Electrochemical Hydrogen Production. ACS OMEGA 2019; 4:6476-6485. [PMID: 31459780 PMCID: PMC6648192 DOI: 10.1021/acsomega.8b03279] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 01/21/2019] [Indexed: 06/10/2023]
Abstract
Engineered nanomaterials are emerging in the field of environmental chemistry. This study involves the analysis of the structural, electronic, crystallinity, and morphological changes in graphitic carbon nitride (g-C3N4), an engineered nanomaterial, under rapid cooling conditions. X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, Brunauer-Emmett-Teller, Fourier transform infrared, Raman, band gap, and Mott-Schottky analyses strongly proved that the liquid N2-quenched sample of g-C3N4 has structural distortion. The photocatalytic efficiency of engineered g-C3N4 nanostructures was analyzed through the degradation of reactive red 120 (RR120), methylene blue (MB), rhodamine B, and bromophenol as a representative dye. The photocatalytic dye degradation efficiency was analyzed by UV-vis spectroscopy and total organic carbon (TOC) analysis. The photocatalytic efficiency of g-C3N4 under different quenching conditions included quenching at room temperature in ice and liquid N2. The degradation efficiencies are found to be 4.2, 14.7, and 82.33% for room-temperature, ice, and liquid N2 conditions, respectively. The pseudo-first-order reaction rate of N2-quenched g-C3N4 is 9 times greater than the ice-quenched g-C3N4. Further, the TOC analysis showed that 55% (MB) and 59% (RR120) of photocatalytic mineralization were achieved within a time duration of 120 min by the liquid N2-quenched g-C3N4 nanostructure. In addition, the quenched g-C3N4 electrocatalytic behavior was examined via the hydrogen (H2) evolution reaction in acidic medium. The liquid N2-quenched g-C3N4 catalyst showed a lower overpotential with high H2 evolution when compared with the other two g-C3N4-quenched samples. The results obtained provide an insight and extend the scope for the application of engineered g-C3N4 nanostructures in the degradation of organic pollutants as well as for H2 evolution.
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Affiliation(s)
- Arulappan Durairaj
- Department
of Chemistry, Karunya Institute of Technology
and Sciences, Karunya
Nagar, Coimbatore 641-114, Tamil Nadu, India
| | - Thangavel Sakthivel
- Key
Lab of Advanced Transducers and Intelligent Control System, Ministry
of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Subramanian Ramanathan
- Department
of Chemistry, Karunya Institute of Technology
and Sciences, Karunya
Nagar, Coimbatore 641-114, Tamil Nadu, India
| | - Samuel Vasanthkumar
- Department
of Chemistry, Karunya Institute of Technology
and Sciences, Karunya
Nagar, Coimbatore 641-114, Tamil Nadu, India
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Al Marzouqi F, Al Farsi B, Kuvarega AT, Al Lawati HAJ, Al Kindy SMZ, Kim Y, Selvaraj R. Controlled Microwave-Assisted Synthesis of the 2D-BiOCl/2D-g-C 3N 4 Heterostructure for the Degradation of Amine-Based Pharmaceuticals under Solar Light Illumination. ACS OMEGA 2019; 4:4671-4678. [PMID: 31459654 PMCID: PMC6648535 DOI: 10.1021/acsomega.8b03665] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 02/01/2019] [Indexed: 06/02/2023]
Abstract
Designing efficient 2D-bismuth oxychloride (BiOCl)/2D-g-C3N4 heterojunction photocatalysts by the microwave-assisted method was studied in this work using different amounts of BiOCl plates coupled with g-C3N4 nanosheets. The effects of coupling the 2D structure of g-C3N4 with the 2D structure of BiOCl were systematically examined by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy, X-ray diffraction, photoluminescence (PL), lifetime decay measurement, surface charges of the samples at various pH conditions, and UV-vis diffuse reflectance spectroscopy (UV-vis DRS). The prepared photocatalysts were used for the degradation of amine-based pharmaceuticals, and nizatidine was used as a model pollutant to evaluate the photocatalytic activity. The UV-vis DRS and other optical properties indicated the major effect of coupling of BiOCl with g-C3N4 into a 2D/2D structure. The results showed a narrowing in the band gap energy of the composite form, whereas the PL and lifetime analysis showed greater inhibition of the electron-hole recombination process and slightly longer charge carrier lifetime. Accordingly, the BiOCl/g-C3N4 composite samples exhibited an enhancement in the photocatalytic performance, specifically for the 10% BiOCl/g-C3N4 sample. Moreover, the zeta potential of this sample at different pH values was evaluated to determine the isoelectric point of the synthesized composite material. Consequently, the pH was adjusted to match the isoelectric point of the complex materials, which further enhanced the activity. Further degradation of pharmaceuticals was studied under solar light irradiation, and 96% degradation was achieved within 30 min.
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Affiliation(s)
- Faisal Al Marzouqi
- Department
of Chemistry, College of Science and Department of Physics, College
of Science, Sultan Qaboos University, P.O. Box 36, P.C. 123, Al-Khoudh, Muscat, Sultanate of Oman
| | - Basim Al Farsi
- Department
of Chemistry, College of Science and Department of Physics, College
of Science, Sultan Qaboos University, P.O. Box 36, P.C. 123, Al-Khoudh, Muscat, Sultanate of Oman
| | - Alex T. Kuvarega
- Nanotechnology
and Water Sustainability Research Unit, College of Science, Engineering
and Technology, University of South Africa, Florida Science Campus, Johannesburg 2196, South Africa
| | - Haider A. J. Al Lawati
- Department
of Chemistry, College of Science and Department of Physics, College
of Science, Sultan Qaboos University, P.O. Box 36, P.C. 123, Al-Khoudh, Muscat, Sultanate of Oman
| | - Salma M. Z. Al Kindy
- Department
of Chemistry, College of Science and Department of Physics, College
of Science, Sultan Qaboos University, P.O. Box 36, P.C. 123, Al-Khoudh, Muscat, Sultanate of Oman
| | - Younghun Kim
- Department
of Chemical Engineering, Kwangwoon University, Seoul 139-701, Korea
| | - Rengaraj Selvaraj
- Department
of Chemistry, College of Science and Department of Physics, College
of Science, Sultan Qaboos University, P.O. Box 36, P.C. 123, Al-Khoudh, Muscat, Sultanate of Oman
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Sun Y, Wang Y, Yang Y, Yang M. An Electrochemiluminescent Sensor for Epinephrine Detection Based on Graphitic Carbon Nitride Nanosheet/Multi-walled Carbon Nanotubes Nanohybrids. CHEM LETT 2019. [DOI: 10.1246/cl.180893] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yanan Sun
- College of Life and Environmental Science, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yan Wang
- College of Life and Environmental Science, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yawen Yang
- College of Life and Environmental Science, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Minli Yang
- College of Life and Environmental Science, Shanghai Normal University, Shanghai 200234, P. R. China
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