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Tang C, Rao H, Li S, She P, Qin JS. A Review of Metal-Organic Frameworks Derived Hollow-Structured Photocatalysts: Synthesis and Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2405533. [PMID: 39212632 DOI: 10.1002/smll.202405533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 08/18/2024] [Indexed: 09/04/2024]
Abstract
Photocatalysis is a most important approach to addressing global energy shortages and environmental issues due to its environmentally friendly and sustainable properties. The key to realizing efficient photocatalysis relies on developing appropriate catalysts with high efficiency and chemical stability. Among various photocatalysts, Metal-organic frameworks (MOFs)-derived hollow-structured materials have drawn increased attention in photocatalysis based on advantages like more active sites, strong light absorption, efficient transfer of pho-induced charges, excellent stability, high electrical conductivity, and better biocompatibility. Specifically, MOFs-derived hollow-structured materials are widely utilized in photocatalytic CO2 reduction (CO2RR), hydrogen evolution (HER), nitrogen fixation (NRR), degradation, and other reactions. This review starts with the development story of MOFs, the commonly adopted synthesis strategies of MOFs-derived hollow materials, and the latest research progress in various photocatalytic applications are also introduced in detail. Ultimately, the challenges of MOFs-derived hollow-structured materials in practical photocatalytic applications are also prospected. This review holds great potential for developing more applicable and efficient MOFs-derived hollow-structured photocatalysts.
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Affiliation(s)
- Chenxi Tang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Heng Rao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Shuming Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Ping She
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
- Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Jun-Sheng Qin
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
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Liu J, Wang R, Shang Y, Zou X, Wu S, Zhong Q. Decorating of 2D indium oxide onto 2D bismuth oxybromide to enhance internal electric field and stimulate artificial photosynthesis. J Colloid Interface Sci 2024; 663:21-30. [PMID: 38387183 DOI: 10.1016/j.jcis.2024.01.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/17/2024] [Accepted: 01/24/2024] [Indexed: 02/24/2024]
Abstract
CO2 photocatalytic reduction is an excellent strategy for promoting solar-to-chemical energy conversion and alleviating the severe environmental crisis. In this study, 2D indium oxide (IO) is decorated on 2D bismuth oxybromide (BOB) nanosheets to gain BOB/IO (BxIy) heterojunction. The optimal B3I1 composite affords a CO production rate of 54.2 μmol⋅g-1, about 2.2 times and 11.3 times higher than those of the pristine BOB and IO, respectively. The introduction of IO significantly enhances the internal electric field (IEF), leading to accelerated charge transfer and prolonged lifetime of the photogenerated carriers. In the BxIy composite, the BOB and IO serve as the electron acceptor and donor, respectively, facilitating the reduction of CO2 and oxidation of H2O. In-situ DRIFTs spectra are used to confirm the catalytic active sites and provide insights into the mechanism of CO2 photoreduction. The results suggest *COOH and *CO2- species played a crucial role in the formation of CO. This work presents a valuable perspective on understanding the charge transfer route and developing highly efficient photocatalysts for CO2 photoreduction.
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Affiliation(s)
- Jingjing Liu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China
| | - Ruonan Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China.
| | - Yutong Shang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China
| | - Xinyu Zou
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China
| | - Shanwen Wu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China
| | - Qin Zhong
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, PR China.
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Davletbaev K, Chougule SS, Min J, Ko K, Kim Y, Choi H, Choi Y, Chavan AA, Pak B, Rakhmonov IU, Jung N. Effect of Heat Treatment on Structure of Carbon Shell-Encapsulated Pt Nanoparticles for Fuel Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:924. [PMID: 38869549 PMCID: PMC11173419 DOI: 10.3390/nano14110924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 06/14/2024]
Abstract
Polymer electrolyte membrane fuel cells (PEMFCs) have attracted much attention as highly efficient, eco-friendly energy conversion devices. However, carbon-supported Pt (Pt/C) catalysts for PEMFCs still have several problems, such as low long-term stability, to be widely commercialized in fuel cell applications. To address the stability issues of Pt/C such as the dissolution, detachment, and agglomeration of Pt nanoparticles under harsh operating conditions, we design an interesting fabrication process to produce a highly active and durable Pt catalyst by introducing a robust carbon shell on the Pt surface. Furthermore, this approach provides insights into how to regulate the carbon shell layer for fuel cell applications. Through the application of an appropriate amount of H2 gas during heat treatment, the carbon shell pores, which are integral to the structure, can be systematically modulated to facilitate oxygen adsorption for the oxygen reduction reaction. Simultaneously, the carbon shell functions as a protective barrier, preventing catalyst degradation. In this regard, we investigate an in-depth analysis of the effects of critical parameters including H2 content and the flow rate of H2/N2 mixed gas during heat treatment to prepare better catalysts.
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Affiliation(s)
- Khikmatulla Davletbaev
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
- Department of Power Supply, Tashkent State Technical University, Tashkent 100095, Uzbekistan
| | - Sourabh S. Chougule
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
| | - Jiho Min
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
| | - Keonwoo Ko
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
| | - Yunjin Kim
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
| | - Hyeonwoo Choi
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
| | - Yoonseong Choi
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
| | - Abhishek A. Chavan
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
| | - Beomjun Pak
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
| | - Ikromjon U. Rakhmonov
- Department of Power Supply, Tashkent State Technical University, Tashkent 100095, Uzbekistan
| | - Namgee Jung
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (K.D.); (S.S.C.); (J.M.); (K.K.); (Y.K.); (H.C.); (Y.C.); (A.A.C.); (B.P.)
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Awe OF, Eya HI, Amaral R, Komalla N, Nbelayim P, Dzade NY. Unraveling the origin of the high photocatalytic properties of earth-abundant TiO 2/FeS 2 heterojunctions: insights from first-principles density functional theory. Phys Chem Chem Phys 2024; 26:12869-12879. [PMID: 38625375 DOI: 10.1039/d3cp04453j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Herein, first-principles density functional theory calculations have been employed to unravel the interfacial geometries (composition and stability), electronic properties (density of states and differential charge densities), and charge carrier transfers (work function and energy band alignment) of a TiO2(001)/FeS2(100) heterojunction. Analyses of the structure and electronic properties reveal the formation of strong interfacial Fe-O and Ti-S ionic bonds, which stabilize the interface with an adhesion energy of -0.26 eV Å-2. The work function of the TiO2(001)/FeS2(100) heterojunction is predicted to be much smaller than those of the isolated FeS2(100) and TiO2(001) layers, indicating that less energy will be needed for electrons to transfer from the ground state to the surface to promote photochemical reactions. The difference in the work function between the FeS2(100) and TiO2(001) heterojunction components caused an electron density rearrangement at the heterojunction interface, which induces an electric field that separates the photo-generated electrons and holes. Consistently, a staggered band alignment is predicted at the interface with the conduction band edge and the valence-band edge of FeS2 lying 0.37 and 2.62 eV above those of anatase. These results point to efficient charge carrier separation in the TiO2(001)/FeS2(100) heterojunction, wherein photoinduced electrons would transfer from the FeS2 to the TiO2 layer. The atomistic insights into the mechanism of enhanced charge separation and transfer across the interface rationalize the observed high photocatalytic activity of the mixed TiO2(001)/FeS2(100) heterojunction over the individual components.
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Affiliation(s)
- Oluwayomi F Awe
- Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, PA 16802, USA
| | - Henry I Eya
- Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, PA 16802, USA
| | - Ricardo Amaral
- Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, PA 16802, USA
| | - Nikhil Komalla
- Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, PA 16802, USA
| | - Pascal Nbelayim
- Department of Materials Science and Engineering, School of Engineering Sciences, College of Basic and Applied Sciences, University of Ghana, Accra, Ghana.
| | - Nelson Y Dzade
- Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, PA 16802, USA
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Navakoteswara Rao V, Kedhareswara Sairam P, Kim MD, Rezakazemi M, Aminabhavi TM, Ahn CW, Yang JM. CdS/TiO 2 nano hybrid heterostructured materials for superior hydrogen production and gas sensor applications. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 340:117895. [PMID: 37121008 DOI: 10.1016/j.jenvman.2023.117895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/27/2023] [Accepted: 04/07/2023] [Indexed: 05/12/2023]
Abstract
In efforts to minimize environmental pollution and carbon-based gas emissions, photocatalytic hydrogen production and sensing applications at ambient temperature are important. This research reports on the development of new 0D/1D materials based on TiO2 nanoparticles grown onto CdS hetersturctured nanorods via two-stage facile synthesis. The titanate nanoparticles when loaded onto CdS surfaces at an optimized concentration (20 mM), exhibited superior photocatalytic hydrogen production (21.4 mmol/h/gcat). The optimized nanohybrid was recycled for 6 cycles up to 4 h, indicating its excellent stabity for a prolonged period. Also, the photoelectrochemical water oxidation in alkaline medium was investigated to offer the optimized CRT-2 composite with 1.91 mA/cm2@0.8 V vs. RHE (0 V vs. Ag/AgCl) that was used for effective room-temperature NO2 gas detection exhibiting a higher response (69.16%) to NO2 (100 ppm) at room temperature at the lowest detection limit of ∼118 ppb than the pristine counterparts. Further, NO2 gas sensing performance of CRT-2 sensor was increased using UV light (365 nm) activation energy. Under the UV light, the sensor exhibited a remarkable gas sensing response quick response/recovery times (68/74), excellent long-term cycling stability, and significant selectivity to NO2 gas. Due to high porosity and surface area values of CdS (5.3), TiO2 (35.5), and CRT-2 (71.5 m2/g), excellent photocatalytic H2 production and gas sensing of CRT-2 is ascribed to morphology, synergistic effect, improved charge generation, and separation. Overall, 1D/0D CdS@TiO2 is proved to be an efficient material for hydrogen production and gas detection.
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Affiliation(s)
- Vempuluru Navakoteswara Rao
- Nano-convergence Technology Division, National Nanofab Center at Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea.
| | - Pasupuleti Kedhareswara Sairam
- Department of Physics, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Republic of Korea; Institute of Quantum Systems (IQS), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Republic of Korea
| | - Moon-Deock Kim
- Department of Physics, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Republic of Korea; Institute of Quantum Systems (IQS), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Republic of Korea
| | - Mashallah Rezakazemi
- Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran.
| | - Tejraj M Aminabhavi
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580031, Karnataka, India; University Center for Research & Development (UCRO), Chandigarh University, Gharuan, Mohali, Punjab, 140413, India.
| | - Chi Won Ahn
- Nano-convergence Technology Division, National Nanofab Center at Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Jun-Mo Yang
- Nano-convergence Technology Division, National Nanofab Center at Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea.
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Gurusamy L, Karuppasamy L, Anandan S, Barton SC, Chuang YH, Liu CH, Wu JJ. Review of oxygen-vacancies nanomaterials for non-enzymatic electrochemical sensors application. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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CdTe QDs-sensitized TiO 2 nanocomposite for magnetic-assisted photoelectrochemical immunoassay of SARS-CoV-2 nucleocapsid protein. Bioelectrochemistry 2023; 150:108358. [PMID: 36580690 PMCID: PMC9783190 DOI: 10.1016/j.bioelechem.2022.108358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/10/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
A sensitive, reliable, and cost-effective detection for SARS-CoV-2 was urgently needed due to the rapid spread of COVID-19. Here, a "signal-on" magnetic-assisted PEC immunosensor was constructed for the quantitative detection of SARS-CoV-2 nucleocapsid (N) protein based on Z-scheme heterojunction. Fe3O4@SiO2@Au was used to connect the capture antibody to act as a capture probe (Fe3O4@SiO2@Au/Ab1). It can extract target analytes selectively in complex samples and multiple electrode rinsing and assembly steps were avoided effectively. CdTe QDs sensitized TiO2 coated on the surface of SiO2 spheres to form Z-scheme heterojunction (SiO2@TiO2@CdTe QDs), which broadened the optical absorption range and inhibited the quick recombination of photogenerated electron/hole of the composite. With fascinating photoelectric conversion performance, SiO2@TiO2@CdTe QDs were utilized as a signal label, thus further realizing signal amplification. The migration mechanism of photogenerated electrons was further deduced by active material quenching experiment and electron spin resonance (ESR) measurement. The elaborated immunosensor can detect SARS-CoV-2 N protein in the linear range of 0.005-50 ng mL-1 with a low detection limit of 1.8 pg mL-1 (S/N = 3). The immunosensor displays extraordinary sensitivity, strong anti-interference, and high reproducibility in detecting SARS-CoV-2 N protein, which envisages its potential application in the clinical diagnosis of COVID-19.
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García A, Rodríguez B, Rosales M, Quintero YM, G. Saiz P, Reizabal A, Wuttke S, Celaya-Azcoaga L, Valverde A, Fernández de Luis R. A State-of-the-Art of Metal-Organic Frameworks for Chromium Photoreduction vs. Photocatalytic Water Remediation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4263. [PMID: 36500886 PMCID: PMC9738636 DOI: 10.3390/nano12234263] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 05/27/2023]
Abstract
Hexavalent chromium (Cr(VI)) is a highly mobile cancerogenic and teratogenic heavy metal ion. Among the varied technologies applied today to address chromium water pollution, photocatalysis offers a rapid reduction of Cr(VI) to the less toxic Cr(III). In contrast to classic photocatalysts, Metal-Organic frameworks (MOFs) are porous semiconductors that can couple the Cr(VI) to Cr(III) photoreduction to the chromium species immobilization. In this minireview, we wish to discuss and analyze the state-of-the-art of MOFs for Cr(VI) detoxification and contextualizing it to the most recent advances and strategies of MOFs for photocatalysis purposes. The minireview has been structured in three sections: (i) a detailed discussion of the specific experimental techniques employed to characterize MOF photocatalysts, (ii) a description and identification of the key characteristics of MOFs for Cr(VI) photoreduction, and (iii) an outlook and perspective section in order to identify future trends.
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Affiliation(s)
- Andreina García
- Advanced Mining Technology Center (AMTC), Universidad de Chile, Avenida Beauchef 850, Santiago 8370451, Chile; (M.R.); (Y.M.Q.)
- Mining Engineering Department, Faculty of Physical and Mathematical Sciences (FCFM), Universidad de Chile, Av. Tupper 2069, Santiago 8370451, Chile
| | - Bárbara Rodríguez
- Centro de Investigación en Recursos Naturales y Sustentabilidad (CIRENYS), Universidad Bernardo O’Higgins, Avenida Viel 1497, Santiago 8320000, Chile;
| | - Maibelin Rosales
- Advanced Mining Technology Center (AMTC), Universidad de Chile, Avenida Beauchef 850, Santiago 8370451, Chile; (M.R.); (Y.M.Q.)
| | - Yurieth M. Quintero
- Advanced Mining Technology Center (AMTC), Universidad de Chile, Avenida Beauchef 850, Santiago 8370451, Chile; (M.R.); (Y.M.Q.)
| | - Paula G. Saiz
- Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; (P.G.S.); (A.R.); (S.W.); (L.C.-A.); (A.V.)
| | - Ander Reizabal
- Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; (P.G.S.); (A.R.); (S.W.); (L.C.-A.); (A.V.)
| | - Stefan Wuttke
- Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; (P.G.S.); (A.R.); (S.W.); (L.C.-A.); (A.V.)
- Department of Organic and Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Leire Celaya-Azcoaga
- Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; (P.G.S.); (A.R.); (S.W.); (L.C.-A.); (A.V.)
- Department of Organic and Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Ainara Valverde
- Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; (P.G.S.); (A.R.); (S.W.); (L.C.-A.); (A.V.)
- IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Roberto Fernández de Luis
- Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; (P.G.S.); (A.R.); (S.W.); (L.C.-A.); (A.V.)
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Yang Q, Qin W, Xie Y, Zong K, Guo Y, Song Z, Luo G, Raza W, Hussain A, Ling Y, Luo J, Zhang W, Ye H, Zhao J. Constructing 2D/1D heterostructural BiOBr/CdS composites to promote CO2 photoreduction. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121603] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Chen R, Bai X, Ma M, Luo Y, Qian L, She X. Highly efficient simultaneous hydrogen evolution and organic pollutants removal using CdS decorated with CoP nanosheet under visible light. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Ingenious design of ternary hollow nanosphere with shell hierarchical tandem heterojunctions toward optimized Visible-light photocatalytic reduction of U(VI). Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120418] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Liu J, Yuan X, Sun J, Ke J, Liu B, Wang L. Creating triazine units to bridge carbon nitride with titania for enhanced hydrogen evolution performance. J Colloid Interface Sci 2022; 608:2768-2778. [PMID: 34774313 DOI: 10.1016/j.jcis.2021.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/31/2021] [Accepted: 11/01/2021] [Indexed: 11/19/2022]
Abstract
In this work, a wealth of triazine units was created in carbon nitride through a facile molten salt method to bridge titania and carbon nitride for accelerating charge transportation and enhancing hydrogen production performance. The doping of triazine ring into C3N4 framework results in more exposure of - CN - and - CN bond and forms a homojunction (MCN), which favors photocatalysis by acting as photoresponse and active centers, respectively. Moreover, the triazine units can bridge the hybridized C3N4 and TiO2, forming a stable MCN/TiO2 homo-heterojunction. Attributed to the matched band energy structure of MCN and TiO2 and the structural characteristics of triazine/heptazine heterocyclic, the light response, charge separation and transfer as well as the lifetime of carriers on MCN/TiO2 hybrid are improved significantly. As a result, the MCN/TiO2 homo-heterojunction exhibits excellent activity and stability for photocatalytic hydrogen production performance, up to 2594 μmol∙g-1∙h-1 under simulated solar irradiation, which is 5.5 times higher than that of the bare g-C3N4.
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Affiliation(s)
- Jie Liu
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China; MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| | - Xinda Yuan
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China; MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Juan Sun
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China; MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Jun Ke
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Baojun Liu
- College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China
| | - Lidong Wang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China; MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
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13
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Shao Y, Dou Z, Liang X, Zhang X, Ji M, Pang M, Wang M, Wang X. ZnIn2S4 nanosheet growth on amine-functionalized SiO2 for the photocatalytic reduction of CO2. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01740c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The growth of ZnIn2S4 nanosheets on NH–SiO2 promotes charge carrier separation and provides active sites for CO2 activation, therefore significantly boosting CO2 photoreduction efficiency.
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Affiliation(s)
- Yuqing Shao
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian, 116024, Liaoning, China
| | - Zhaolin Dou
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Xiaoyu Liang
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian, 116024, Liaoning, China
| | - Xinxin Zhang
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian, 116024, Liaoning, China
| | - Min Ji
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian, 116024, Liaoning, China
| | - Min Pang
- Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, Sichuan, China
| | - Min Wang
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Xinkui Wang
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian, 116024, Liaoning, China
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14
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Synergistic effect of iodine doped TiO2 nanoparticle/g-C3N4 nanosheets with upgraded visible-light-sensitive performance toward highly efficient and selective photocatalytic oxidation of aromatic alcohols under blue LED irradiation. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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15
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Iqbal A, Kafizas A, Sotelo-Vazquez C, Wilson R, Ling M, Taylor A, Blackman C, Bevan K, Parkin I, Quesada-Cabrera R. Charge Transport Phenomena in Heterojunction Photocatalysts: The WO 3/TiO 2 System as an Archetypical Model. ACS APPLIED MATERIALS & INTERFACES 2021; 13:9781-9793. [PMID: 33595275 DOI: 10.1021/acsami.0c19692] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Recent studies have demonstrated the high efficiency through which nanostructured core-shell WO3/TiO2 (WT) heterojunctions can photocatalytically degrade model organic pollutants (stearic acid, QE ≈ 18% @ λ = 365 nm), and as such, has varied potential environmental and antimicrobial applications. The key motivation herein is to connect theoretical calculations of charge transport phenomena, with experimental measures of charge carrier behavior using transient absorption spectroscopy (TAS), to develop a fundamental understanding of how such WT heterojunctions achieve high photocatalytic efficiency (in comparison to standalone WO3 and TiO2 photocatalysts). This work reveals an order of magnitude enhancement in electron and hole recombination lifetimes, respectively located in the TiO2 and WO3 sides, when an optimally designed WT heterojunction photocatalyst operates under UV excitation. This observation is further supported by our computationally captured details of conduction band and valence band processes, identified as (i) dominant electron transfer from WO3 to TiO2 via the diffusion of excess electrons; and (ii) dominant hole transfer from TiO2 to WO3 via thermionic emission over the valence band edge. Simultaneously, our combined theoretical and experimental study offers a time-resolved understanding of what occurs on the micro- to milliseconds (μs-ms) time scale in this archetypical photocatalytic heterojunction. At the microsecond time scale, a portion of the accumulated holes in WO3 contribute to the depopulation of W5+ polaronic states, whereas the remaining accumulated holes in WO3 are separated from adjacent electrons in TiO2 up to 3 ms after photoexcitation. The presence of these exceptionally long-lived photogenerated carriers, dynamically separated by the WT heterojunction, is the origin of the superior photocatalytic efficiency displayed by this system (in the degradation of stearic acid). Consequently, our combined computational and experimental approach delivers a robust understanding of the direction of charge separation along with critical time-resolved insights into the evolution of charge transport phenomena in this model heterojunction photocatalyst.
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Affiliation(s)
- Asif Iqbal
- Materials Engineering, McGill University, 3610 University Street, Montréal Quebec H3A 0C5, Canada
| | - Andreas Kafizas
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
- The Grantham Institute, Imperial College London, London SW7 2AZ, United Kingdom
| | - Carlos Sotelo-Vazquez
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Rachel Wilson
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Min Ling
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Alaric Taylor
- Department of Electronic & Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom
| | - Chris Blackman
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Kirk Bevan
- Materials Engineering, McGill University, 3610 University Street, Montréal Quebec H3A 0C5, Canada
| | - Ivan Parkin
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Raul Quesada-Cabrera
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
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16
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Hu D, Xu Y, Zhang S, Tu J, Li M, Zhi L, Liu J. Fabrication of redox-mediator-free Z-scheme CdS/NiCo2O4 photocatalysts with enhanced visible-light driven photocatalytic activity in Cr(VI) reduction and antibiotics degradation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125582] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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Naghizadeh A, Mohammadi-Aghdam S, Mortazavi-Derazkola S. Novel CoFe 2O 4@ZnO-CeO 2 ternary nanocomposite: Sonochemical green synthesis using Crataegus microphylla extract, characterization and their application in catalytic and antibacterial activities. Bioorg Chem 2020; 103:104194. [PMID: 32890997 DOI: 10.1016/j.bioorg.2020.104194] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/02/2020] [Accepted: 08/04/2020] [Indexed: 12/20/2022]
Abstract
In this study, CoFe2O4@ZnO-CeO2 magnetic nanocomposite (CoFe@Zn-Ce MNC) was successfully prepared by facile sonochemical method for the first time. CoFe@Zn-Ce MNC was obtained by green and cost-effective process in the presence of Crataegus microphylla (C. microphylla) fruit extract. Influence of some parameters like capping agents (C. microphylla, SDS and CTAB), sonication time (10, 30 and 60 min) and sonication power (40, 60 and 80 W) were studied to achieve optimum condition. The as-obtained products were characterized by FT-IR, FESEM, TEM, DRS, VSM, EDS, TGA and XRD analysis. Results showed that high magnetic properties (20.38 emug-1), 70-80 nm size and spherical morphology were unique characteristics of synthesized nanocomposite. Antibacterial activity of CoFe@Zn-Ce MNC was examined against E. coli, P. aeruginoss and S. aureus bacteria. Among theme, S. aureus as gram-positive bacteria showed excellent antibacterial activity. Furthermore, photocatalytic performance of the CoFe@Zn-Ce MNC was investigated by degradation of humic acid (HA) molecules under visible and UV light irradiations. The influence of morphology of products and incorporation of cerium oxide with CoFe2O4@ZnO on photocatalytic activity of CoFe2O4@ZnO was performed. After 100 min illumination, the decomposition of HA pollutant by magnetic nanocomposite were 97.2% and 72.4% under exposure of UV and visible light irradiations, respectively. Also, CoFe@Zn-Ce MNC demonstrated high stability in the cycling decomposition experiment after six times cycling runs.
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Affiliation(s)
- Ali Naghizadeh
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran
| | | | - Sobhan Mortazavi-Derazkola
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran.
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18
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Li JY, Li YH, Qi MY, Lin Q, Tang ZR, Xu YJ. Selective Organic Transformations over Cadmium Sulfide-Based Photocatalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01567] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jing-Yu Li
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P.R. China
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, P.R. China
| | - Yue-Hua Li
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P.R. China
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, P.R. China
| | - Ming-Yu Qi
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P.R. China
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, P.R. China
| | - Qiong Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P.R. China
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, P.R. China
| | - Zi-Rong Tang
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, P.R. China
| | - Yi-Jun Xu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P.R. China
- College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, P.R. China
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19
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Wang J, Sun S, Ding H, Li W, Wang X. Well-Designed CdS/TiO2/MS-SiO2 Z-Scheme Photocatalyst for Combating Poison with Poison. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01089] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jie Wang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Sijia Sun
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Hao Ding
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
| | - Wei Li
- Beijing Building Materials Academy of Sciences Research Company Ltd., Beijing 100041, China
| | - Xuan Wang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
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20
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Zhu K, Ou-Yang J, Zeng Q, Meng S, Teng W, Song Y, Tang S, Cui Y. Fabrication of hierarchical ZnIn2S4@CNO nanosheets for photocatalytic hydrogen production and CO2 photoreduction. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63494-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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21
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Radhika N, Selvin R, Kakkar R, Umar A. Recent advances in nano-photocatalysts for organic synthesis. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.07.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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22
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Co(II/III) Complexes with Benzoxazole and Benzothiazole Ligands as Efficient Heterogenous Photocatalysts for Organic Dyes Degradation. Catalysts 2019. [DOI: 10.3390/catal9110913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The problem of pollution in the current world is growing, however people’s awareness of environmental protection and ecology is also increasing. The aim of the study is to present three new Schiff base compounds with Co(II/III) ions and to assess their photocatalytic activity. The study was supported by cyclic voltammetry technique. In due course the complex 2 revealed as the most effective in AR18 degradation, even more than commercially available TiO2. The search for new photocatalysts able to decompose harmful organic dyes into environmentally friendly basic substances is becoming a new trend in the area of chemistry development.
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23
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Bai X, Wang YJ, Li Y, Wang XJ. Adsorption–photocatalytical remediation for series of tetracycline contaminants with BiOCl–CdS composite under simulated sunlight. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.08.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Ansari A, Badhe RA, Garje SS. Preparation of CdS-TiO 2-Based Palladium Heterogeneous Nanocatalyst by Solvothermal Route and Its Catalytic Activity for Reduction of Nitroaromatic Compounds. ACS OMEGA 2019; 4:14937-14946. [PMID: 31552334 PMCID: PMC6751702 DOI: 10.1021/acsomega.9b01726] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 08/19/2019] [Indexed: 06/10/2023]
Abstract
In this study, bare CdS nanoparticles (NPs) were prepared by solvothermal method using CdCl2(3-methylbenzaldehyde thiosemicarbazone)2 as a single-source molecular precursor in the presence of ethylene glycol. Further, these CdS NPs were used for the preparation of binary (CdS-TiO2) and ternary (CdS-TiO2/Pd) heterogeneous nanocatalysts. Characterization of the as-prepared nanocatalysts has been carried out using different techniques such as powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), UV-visible diffuse reflectance spectroscopy, and photoluminescence studies. The peak observed at 2θ = 39.5° in XRD confirms the successful doping of noble metal (Pd) on the surface of CdS-TiO2 nanocatalyst, which is well supported by Raman analysis. From FESEM and TEM analyses, mixed morphology has been observed and elemental composition was confirmed by energy-dispersive X-ray spectroscopy elemental mapping. Furthermore, the as-prepared bare CdS NPs, binary CdS-TiO2, and ternary CdS-TiO2/Pd heterogeneous nanocatalysts were used for the reductive transformation of various nitroaromatic compounds to their corresponding aromatic amines at room temperature. It has been observed that among all of the catalysts, ternary CdS-TiO2/Pd heterogeneous nanocatalyst has excellent catalytic property to reduce all nitroaromatic compounds in very short time span.
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25
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Zhao J, Li W, Liu H, Shi H, Xiao C. Yolk-shell CdS@void@TiO2 composite particles with photocorrosion resistance for enhanced dye removal and hydrogen evolution. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.06.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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26
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Zubair M, Svenum IH, Rønning M, Yang J. Facile synthesis approach for core-shell TiO2–CdS nanoparticles for enhanced photocatalytic H2 generation from water. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.10.070] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Core/shell structured CdS/polydopamine/TiO2 ternary hybrids as highly active visible-light photocatalysis. J Colloid Interface Sci 2019; 544:1-7. [DOI: 10.1016/j.jcis.2019.02.080] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/21/2019] [Accepted: 02/22/2019] [Indexed: 11/24/2022]
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28
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Wang L, Liu Z, Han J, Li R, Huang M. Stepwise Synthesis of Au@CdS-CdS Nanoflowers and Their Enhanced Photocatalytic Properties. NANOSCALE RESEARCH LETTERS 2019; 14:148. [PMID: 31037471 PMCID: PMC6488634 DOI: 10.1186/s11671-019-2977-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 04/08/2019] [Indexed: 05/30/2023]
Abstract
Fabrication of hybrid nanostructures with complex morphologies and high photocatalytic activity is a difficult challenge because these particles require extremely high preparation skills and are not always practical. Here, hierarchical flower-like Au@CdS-CdS nanoparticles (Au@CdS-CdS nanoflowers) have been synthesized using a stepwise method. The Au@CdS-CdS nanoflowers are consisted of Au core, CdS shell, and CdS nanorods. The UV-Vis absorption range of the Au@CdS-CdS nanoflowers reaches up to 850 nm which covers the whole visible range (400-760 nm). Photoinduced charge transfer property of Au@CdS-CdS nanoflowers was demonstrated using photoluminescence (PL) spectroscopy. Compared to CdS counterparts and Au@CdS counterparts, Au@CdS-CdS nanoflowers demonstrated the highest photocatalytic degradation rate under irradiation of λ = 400-780 nm and λ = 600-780 nm, respectively. Based on structure and morphology analyses, we have proposed a possible formation mechanism of the hybrid nanostructure which can be used to guide the design of other metal-semiconductor nanostructures with complex morphologies.
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Affiliation(s)
- Liwei Wang
- School of Physics and Electronics, Henan University, Kaifeng, 475004 People’s Republic of China
| | - Zhe Liu
- School of Physics and Electronics, Henan University, Kaifeng, 475004 People’s Republic of China
| | - Junhe Han
- School of Physics and Electronics, Henan University, Kaifeng, 475004 People’s Republic of China
| | - Ruoping Li
- School of Physics and Electronics, Henan University, Kaifeng, 475004 People’s Republic of China
| | - Mingju Huang
- School of Physics and Electronics, Henan University, Kaifeng, 475004 People’s Republic of China
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29
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Al-Fahdi T, Al Marzouqi F, Kuvarega AT, Mamba BB, Al Kindy SM, Kim Y, Selvaraj R. Visible light active CdS@TiO2 core-shell nanostructures for the photodegradation of chlorophenols. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.01.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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Najafian H, Manteghi F, Beshkar F, Salavati-Niasari M. Fabrication of nanocomposite photocatalyst CuBi 2O 4/Bi 3ClO 4 for removal of acid brown 14 as water pollutant under visible light irradiation. JOURNAL OF HAZARDOUS MATERIALS 2019; 361:210-220. [PMID: 30196033 DOI: 10.1016/j.jhazmat.2018.08.092] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 08/27/2018] [Accepted: 08/28/2018] [Indexed: 05/28/2023]
Abstract
In the present study, CuBi2O4/Bi3ClO4 nanocomposites have been fabricated via an improved Pechini sol-gel process using the mixtures of various gelling agents and polybasic acids. This work shows that by controlling the reaction conditions such as kind of polybasic acids, gelling agents, pH and mole ratio of polybasic acid to total metals, the CuBi2O4/Bi3ClO4 nanocomposites with ultrafine sphere-like, irregular polyhedral-like, plate-like and cubic-like morphologies were prepared. The phase, elemental composition, morphology and optical characteristics of as-synthesized CuBi2O4/Bi3ClO4 nanostructures were analyzed utilizing UV-Vis, FESEM, TEM, HRTEM, FT-IR, XRD, TOC and EDS techniques. Furthermore, the CuBi2O4/Bi3ClO4 nanocomposites exhibited excellent TOC removal (75%) and photocatalytic activity (92%) to photodegradation of acid brown 14 azo dye as water pollutants under visible light irradiation. The excellent degradation activity of CuBi2O4/Bi3ClO4 photocatalyst can be attributed to the strong visible light absorption, high charge separation efficiency, fine particle size distribution and proper band gap of the nanocomposite. In addition, the reliable photocatalytic mechanism was discussed on the basis of the radical trapping study, which revealed the h+ and O2- radicals were the prevailing active species in the photocatalytic process.
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Affiliation(s)
- Hassan Najafian
- Department of Chemistry, Iran University of Science and Technology, Tehran, P. O. Box 16846-13114, Iran
| | - Faranak Manteghi
- Department of Chemistry, Iran University of Science and Technology, Tehran, P. O. Box 16846-13114, Iran
| | - Farshad Beshkar
- Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran
| | - Masoud Salavati-Niasari
- Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box 87317-51167, Iran.
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31
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Garg P, Bhauriyal P, Mahata A, Rawat KS, Pathak B. Role of Dimensionality for Photocatalytic Water Splitting: CdS Nanotube versus Bulk Structure. Chemphyschem 2019; 20:383-391. [PMID: 30485628 DOI: 10.1002/cphc.201801051] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Indexed: 11/09/2022]
Abstract
Using state-of-the-art density functional theoretical calculations, we have modelled a facetted CdS nanotube (NT) catalyst for photocatalytic water splitting. The overall photocatalytic activity of the CdS photocatalyst has been predicted based on the electronic structures, band edge alignment, and overpotential calculations. For comparisons, we have also investigated the water splitting process over bulk CdS. The band edge alignment along with the oxygen evolution reaction/hydrogen evolution reaction (OER/HER) mechanism studies help us find out the effective overpotential for the overall water splitting on these surfaces. Our study shows that the CdS NT has a highly stabilized valence band edge compared to that of bulk CdS owing to strong p-d mixing. The highly stabilized valence band edge is important for the hole-transfer process and reduces the risk of electron-hole recombination. CdS nanotube requires less overpotential for water oxidation reaction than the bulk CdS. Our findings suggest that the efficiency of the water oxidation/reduction process further improves in CdS as we reduce its dimensionality, that is going from bulk CdS to one-dimensional nanotube. Furthermore, the stabilized valence band edge of CdS nanotube also improves the photostability of CdS, which is a problem for bulk CdS.
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Affiliation(s)
- Priyanka Garg
- Discipline of Chemistry, Indian Institute of Technology (IIT) Indore, Indore. M.P., 453552, India
| | - Preeti Bhauriyal
- Discipline of Chemistry, Indian Institute of Technology (IIT) Indore, Indore. M.P., 453552, India
| | - Arup Mahata
- Discipline of Chemistry, Indian Institute of Technology (IIT) Indore, Indore. M.P., 453552, India
| | - Kuber Singh Rawat
- Discipline of Chemistry, Indian Institute of Technology (IIT) Indore, Indore. M.P., 453552, India
| | - Biswarup Pathak
- Discipline of Chemistry, Indian Institute of Technology (IIT) Indore, Indore. M.P., 453552, India.,Discipline of Metallurgy Engineering and Materials Science, Indian Institute of Technology (IIT) Indore, Indore. M.P., 453552, India
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32
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Enhanced photocatalytic activity of a novel NiO/Bi2O3/Bi3ClO4 nanocomposite for the degradation of azo dye pollutants under visible light irradiation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.07.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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33
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She H, Wang Y, Zhou H, Li Y, Wang L, Huang J, Wang Q. Preparation of Zn3
In2
S6
/TiO2
for Enhanced CO2
Photocatalytic Reduction Activity Via Z-scheme Electron Transfer. ChemCatChem 2018. [DOI: 10.1002/cctc.201801745] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Houde She
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 P.R. China
| | - Yan Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 P.R. China
| | - Hua Zhou
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 P.R. China
| | - Yuan Li
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 P.R. China
| | - Lei Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 P.R. China
| | - Jingwei Huang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 P.R. China
| | - Qizhao Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou 730070 P.R. China
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34
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Khan UA, Liu J, Pan J, Ma H, Zuo S, Yu Y, Ahmad A, Ullah S, li B. Fabrication of Highly Efficient and Hierarchical CdS QDs/CQDs/H-TiO2 Ternary Heterojunction: Surpassable Photocatalysis under Sun-like Illumination. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b04627] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Usman Ali Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Jianjun Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Jinbo Pan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Hecheng Ma
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Shengli Zuo
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Yingchun Yu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Aftab Ahmad
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Sadeeq Ullah
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Baoshan li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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Zhang D, Lee C, Javed H, Yu P, Kim JH, Alvarez PJJ. Easily Recoverable, Micrometer-Sized TiO 2 Hierarchical Spheres Decorated with Cyclodextrin for Enhanced Photocatalytic Degradation of Organic Micropollutants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:12402-12411. [PMID: 30272446 DOI: 10.1021/acs.est.8b04301] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Micrometer-sized titanium dioxide hierarchical spheres (TiO2-HS) were assembled from nanosheets to address two common limitations of photocatalytic water treatment: (1) inefficiency associated with scavenging of oxidation capacity by nontarget water constituents and (2) energy-intensive separation and recovery of the photocatalyst slurry. These micrometer-sized spheres are amenable to low-energy separation, and over 99% were recaptured from both batch and continuous flow reactors using microfiltration. Using nanosheets as building blocks resulted in a large specific surface area-3 times larger than that of commercially available TiO2 powder (Evonik P25). Anchoring food-grade cyclodextrin onto TiO2-HS (i.e., CD-TiO2-HS) provided hydrophobic cavities to entrap organic contaminants for more effective utilization of photocatalytically generated reactive oxygen species. CD-TiO2-HS removed over 99% of various contaminants with dissimilar hydrophobicity (i.e., bisphenol A, bisphenol S, 2-naphthol, and 2,4-dichlorophenol) within 2 h under a low-intensity UVA input (3.64 × 10-6 einstein/L/s). As with other catalyst (including TiO2 slurry), periodic replacement or replenishment would be needed to maintain high treatment efficiency (e.g., we demonstrate full reactivation through simple reanchoring of CD). Nevertheless, this task would be offset by significant savings in photocatalyst separation. Thus, CD-TiO2-HS is an attractive candidate for photocatalytic water and wastewater treatment of recalcitrant organic pollutants.
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Affiliation(s)
| | - Changgu Lee
- Department of Environmental and Safety Engineering , Ajou University , Suwon , South Korea
| | | | | | - Jae-Hong Kim
- Department of Chemical & Environmental Engineering , Yale University , New Haven , Connecticut 06520 , United States
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Ranjith R, Krishnakumar V, Boobas S, Venkatesan J, Jayaprakash J. An Efficient Photocatalytic and Antibacterial Performance of Ni/Ce-Codoped CdS Nanostructure under Visible Light Irradiation. ChemistrySelect 2018. [DOI: 10.1002/slct.201801485] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rajendran Ranjith
- Advanced Materials Laboratory; Department of Physics; Periyar University; Salem-636 011, Tamilnadu India
| | - Varadharajan Krishnakumar
- Advanced Materials Laboratory; Department of Physics; Periyar University; Salem-636 011, Tamilnadu India
| | - Singaram Boobas
- Advanced Materials Laboratory; Department of Physics; Periyar University; Salem-636 011, Tamilnadu India
| | - Jayaraman Venkatesan
- Advanced Materials Laboratory; Department of Physics; Periyar University; Salem-636 011, Tamilnadu India
| | - Jeyaram Jayaprakash
- Advanced Materials Laboratory; Department of Physics; Periyar University; Salem-636 011, Tamilnadu India
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Tian J, Li Y, Dong J, Huang M, Lu J. Photoelectrochemical TiO2 nanotube arrays biosensor for asulam determination based on in-situ generation of quantum dots. Biosens Bioelectron 2018; 110:1-7. [DOI: 10.1016/j.bios.2018.03.038] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 03/16/2018] [Accepted: 03/16/2018] [Indexed: 10/17/2022]
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Yoo SH, Lee SI, Joh HI, Lee S. Highly effective photocatalysts based on carbon nanofibers decorated with TiO2 and CdSe under visible light. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.01.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Acharya R, Naik B, Parida K. Cr(VI) remediation from aqueous environment through modified-TiO 2-mediated photocatalytic reduction. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:1448-1470. [PMID: 29977679 PMCID: PMC6009310 DOI: 10.3762/bjnano.9.137] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 04/19/2018] [Indexed: 05/21/2023]
Abstract
Cr(VI) exhibits cytotoxic, mutagenic and carcinogenic properties; hence, effluents containing Cr(VI) from various industrial processes pose threat to aquatic life and downstream users. Various treatment techniques, such as chemical reduction, ion exchange, bacterial degradation, adsorption and photocatalysis, have been exploited for remediation of Cr(VI) from wastewater. Among these, photocatalysis has recently gained considerable attention. The applications of photocatalysis, such as water splitting, CO2 reduction, pollutant degradation, organic transformation reactions, N2 fixation, etc., towards solving the energy crisis and environmental issues are briefly discussed in the Introduction of this review. The advantages of TiO2 as a photocatalyst and the importance of its modification for photocatalytic reduction of Cr(VI) has also been addressed. In this review, the photocatalytic activity of TiO2 after modification with carbon-based advanced materials, metal oxides, metal sulfides and noble metals towards reduction of Cr(VI) was evaluated and compared with that of bare TiO2. The photoactivity of dye-sensitized TiO2 for reduction of Cr(VI) was also discussed. The mechanism for enhanced photocatalytic activity was highlighted and attributed to the resultant properties, namely, effective separation of photoinduced charge carriers, extension of the light absorption range and intensity, increase of the surface active sites, and higher photostability. Advantages and limitations for photoreduction of Cr(VI) over modified TiO2 are depicted in the Conclusion. The various challenges that restrict the technology from practical applications in remediation of Cr(VI) from wastewater were addressed in the Conclusion section as well. The future perspectives of the field presented in this review are focused on the development of whole-solar-spectrum responsive, TiO2-coupled photocatalysts which provide efficient photocatalytic reduction of Cr(VI) along with their good recoverability and recyclability.
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Affiliation(s)
- Rashmi Acharya
- Centre for Nano Science and Nano Technology, Siksha ‘O’ Anusandhan University, Bhubaneswar 751030, India
| | - Brundabana Naik
- Centre for Nano Science and Nano Technology, Siksha ‘O’ Anusandhan University, Bhubaneswar 751030, India
| | - Kulamani Parida
- Centre for Nano Science and Nano Technology, Siksha ‘O’ Anusandhan University, Bhubaneswar 751030, India
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Chen W, Fang J, Zhang Y, Chen G, Zhao S, Zhang C, Xu R, Bao J, Zhou Y, Xiang X. CdS nanosphere-decorated hollow polyhedral ZCO derived from a metal-organic framework (MOF) for effective photocatalytic water evolution. NANOSCALE 2018; 10:4463-4474. [PMID: 29457808 DOI: 10.1039/c7nr08943k] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Semiconductor nanostructures have received considerable attention in the field of photocatalytic hydrogen evolution. However, eco-friendly, high efficiency, and low-cost semiconductor materials are still desired. In consideration of this, herein, we design a new and economic noble-metal-free CdS/ZnxCo3-xO4 (CdS/ZCO) nanohybrid photocatalyst using a metal-organic framework (MOF) template, which is a framework structure composed of organic ligands and metal ion nodes with different numbers of connections. The as-prepared CdS/ZCO composites with a large specific surface area and porous hollow structure exhibit remarkable catalytic activity and high stability for hydrogen generation. The hydrogen evolution rate is about 3978.6 μmol g-1 h-1 with lactic acid as the sacrificial agent when the optimized amount of CdS nanoparticles (30 wt%) is decorated on the ZCO frame, and the production efficiency of H2 for CdS/ZCO is 4 times higher than that for CdS nanospheres or CdS/Co3O4. The significantly enhanced photocatalytic activity of CdS/ZCO is attributed to the efficient charge separation and transfer between the phase boundary of CdS and ZCO. In addition, the composites exhibit better hydrogen production in lactic acid than in methanol, and the remarkable catalytic activity and high stability of the CdS/ZCO composites for hydrogen evolution indicate that MOF-based composite materials have potential application prospects in energy conversion.
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Affiliation(s)
- Wenxia Chen
- School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211189, P. R. China.
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Ansari A, Sachar S, Garje SS. Synthesis of bare and surface modified TiO2 nanoparticles via a single source precursor and insights into their interactions with serum albumin. NEW J CHEM 2018. [DOI: 10.1039/c8nj02253d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Choice of an apt surface modifier to design a more efficient TiO2 NP based photosensitizer for PDT applications.
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Affiliation(s)
- Aleem Ansari
- Department of Chemistry
- University of Mumbai
- Mumbai-400 098
- India
| | - Shilpee Sachar
- Department of Chemistry
- University of Mumbai
- Mumbai-400 098
- India
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Spreading CdS Nanocrystals on GdBO3:Ce,Tb Substrates for Enhancing Their Photocatalytic Performance. Catal Letters 2017. [DOI: 10.1007/s10562-017-2266-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Liu L, Hou H, Wang L, Xu R, Lei Y, Shen S, Yang D, Yang W. A transparent CdS@TiO 2 nanotextile photoanode with boosted photoelectrocatalytic efficiency and stability. NANOSCALE 2017; 9:15650-15657. [PMID: 28993825 DOI: 10.1039/c7nr05658c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In the present work, we report the exploration of a transparent CdS@TiO2 nanotextile photoanode with boosted photoelectrocatalytic (PEC) efficiency and stability, by the controllable coating of an amorphous TiO2 ultrathin layer via the atomic layer deposition (ALD) technique. The optimal CdS@TiO2 nanotextile photoanode with a 3.5 nm TiO2 ultrathin layer exhibits a photocurrent density of 1.8 mA cm-2 at 0 V vs. RHE, which is 11 times higher than that of the pristine CdS counterpart. The photocatalytic H2 evolution rate of CdS@TiO2 ranges up to 47.5 mmol g-1 h-1, which is superior to those reported for one-dimensional CdS-based counterparts. Moreover, the photocurrent of CdS@TiO2 nanotextile photoanodes shows only 9% decay after 9 h, suggesting its profoundly enhanced PEC stability, in comparison with that of pristine CdS photoanodes (almost down to zero after 3 hours). It is verified that the introduced TiO2 nanoshells could limit the charge recombination, facilitate the charge separation, reduce the charge transfer resistance, and enhance the wettability of the electrodes, resulting in their significantly enhanced PEC performance.
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Affiliation(s)
- Long Liu
- Institute of Materials, Ningbo University of Technology, Ningbo 315016, P.R. China.
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Du J, Wang H, Yang M, Li K, Zhao L, Zhao G, Li S, Gu X, Zhou Y, Wang L, Gao Y, Wang W, Kang DJ. Pyramid-like CdS nanoparticles grown on porous TiO 2 monolith: An advanced photocatalyst for H 2 production. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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46
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Zhang S, Yang H, Gao H, Cao R, Huang J, Xu X. One-pot Synthesis of CdS Irregular Nanospheres Hybridized with Oxygen-Incorporated Defect-Rich MoS 2 Ultrathin Nanosheets for Efficient Photocatalytic Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2017; 9:23635-23646. [PMID: 28608669 DOI: 10.1021/acsami.7b03673] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Robust and highly active photocatalysts, CdS@MoS2, for hydrogen evolution were successfully fabricated by one-step growth of oxygen-incorporated defect-rich MoS2 ultrathin nanosheets on the surfaces of CdS with irregular fissures. Under optimized experimental conditions, the CdS@MoS2 displayed a quantum yield of ∼24.2% at 420 nm and the maximum H2 generation rate of ∼17203.7 umol/g/h using Na2S-Na2SO3 as sacrificial agents (λ ≥ 420 nm), which is ∼47.3 and 14.7 times higher than CdS (∼363.8 μmol/g/h) and 3 wt % Pt/CdS (∼1173.2 μmol/g/h), respectively, and far exceeds all previous hydrogen evolution reaction photocatalysts with MoS2 as co-catalysts using Na2S-Na2SO3 as sacrificial agents. Large volumes of hydrogen bubbles were generated within only 2 s as the photocatalysis started, as demonstrated by the photocatalytic video. The high hydrogen evolution activity is attributed to several merits: (1) the intimate heterojunctions formed between the MoS2 and CdS can effectively enhance the charge transfer ability and retard the recombination of electron-hole pairs; and (2) the defects in the MoS2 provide additional active S atoms on the exposed edge sites, and the incorporation of O reduces the energy barrier for H2 evolution and increases the electric conductivity of the MoS2. Considering its low cost and high efficiency, this highly efficient hybrid photocatalysts would have great potential in energy-generation and environment-restoration fields.
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Affiliation(s)
- Shouwei Zhang
- School of Physics and Technology, University of Jinan , Shandong 250022, PR China
| | - Hongcen Yang
- School of Physics and Technology, University of Jinan , Shandong 250022, PR China
| | - Huihui Gao
- School of Physics and Technology, University of Jinan , Shandong 250022, PR China
| | - Ruya Cao
- School of Physics and Technology, University of Jinan , Shandong 250022, PR China
| | - Jinzhao Huang
- School of Physics and Technology, University of Jinan , Shandong 250022, PR China
| | - Xijin Xu
- School of Physics and Technology, University of Jinan , Shandong 250022, PR China
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Prasannalakshmi P, Shanmugam N. Photocatalytic decolourization of brilliant green and methylene blue by TiO2/CdS nanorods. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3522-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Synthesis of core-shell structured CdS@CeO 2 and CdS@TiO 2 composites and comparison of their photocatalytic activities for the selective oxidation of benzyl alcohol to benzaldehyde. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.05.042] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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49
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Huang M, Zhang Y, Zhou Y, Zhang C, Zhao S, Fang J, Gao Y, Sheng X. Preparation of TiO2–ZrO2/Au/CeO2 hollow sandwich-like nanostructures for excellent catalytic activity and thermal stability. NEW J CHEM 2017. [DOI: 10.1039/c7nj03639f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This work reports a novel type of sandwich-like hollow Au-based nanocatalyst, including a TiO2–ZrO2 shell, a hollow CeO2 core and Au nanoparticles of 2–5 nm.
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Affiliation(s)
- Mengqiu Huang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Yiwei Zhang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Yuming Zhou
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Chao Zhang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Shuo Zhao
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Jiasheng Fang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Yan Gao
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Xiaoli Sheng
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
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AgBr@TiO2/GO ternary composites with enhanced photocatalytic activity for oxidation of benzyl alcohol to benzaldehyde. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2747-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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