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Marks M, Jeppesen H, Nielsen MLN, Kong J, Ceccato M, van der Veen MA, Bøjesen ED, Lock N. Elucidating Structural Disorder in Ultra-Thin Bi-Rich Bismuth Oxyhalide Photocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401413. [PMID: 38733238 DOI: 10.1002/smll.202401413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/25/2024] [Indexed: 05/13/2024]
Abstract
Advancing the field of photocatalysis requires the elucidation of structural properties that underpin the photocatalytic properties of promising materials. The focus of the present study is layered, Bi-rich bismuth oxyhalides, which are widely studied for photocatalytic applications yet poorly structurally understood, due to high levels of disorder, nano-sized domains, and the large number of structurally similar compounds. By connecting insights from multiple scattering techniques, utilizing electron-, X-ray- and neutron probes, the crystal phase of the synthesized materials is allocated as layered Bi24O31X10 (X = Cl, Br), albeit with significant deviation from the reported 3D crystalline model. The materials comprise anisotropic platelet-shaped crystalline domains, exhibiting significant in-plane ordering in two dimensions but disorder and an ultra-thin morphology in the layer stacking direction. Increased synthesis pH tailored larger, more ordered crystalline domains, leading to longer excited state lifetimes determined via femtosecond transient absorption spectroscopy (fs-TAS). Although this likely contributes to improved photocatalytic properties, assessed via the photooxidation of benzylamine, increasing the overall surface area facilitated the most significant improvement in photocatalytic performance. This study, therefore, enabled both phase allocation and a nuanced discussion of the structure-property relationship for complicated, ultra-thin photocatalysts.
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Affiliation(s)
- Melissa Marks
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
- Department of Biological and Chemical Engineering, Aarhus University, Åbogade 40, Aarhus N, 8200, Denmark
| | - Henrik Jeppesen
- Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607, Hamburg, Germany
| | - Mads Lund Nygaard Nielsen
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
| | - Jintao Kong
- Department of Chemical Engineering, Technische Universiteit Delft, Delft, HZ 2629, The Netherlands
| | - Marcel Ceccato
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
- Department of Biological and Chemical Engineering, Aarhus University, Åbogade 40, Aarhus N, 8200, Denmark
| | - Monique A van der Veen
- Department of Chemical Engineering, Technische Universiteit Delft, Delft, HZ 2629, The Netherlands
| | - Espen Drath Bøjesen
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
- iMAT Aarhus University Centre for Integrated Materials Research, Aarhus University, Langelandsgade 140, Aarhus C, 8000, Denmark
| | - Nina Lock
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C, 8000, Denmark
- Department of Biological and Chemical Engineering, Aarhus University, Åbogade 40, Aarhus N, 8200, Denmark
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Marks M, Jeppesen HS, Lock N. Tuneable Phase, Morphology, and Performance of Bismuth Oxyhalide Photocatalysts via Microwave-Assisted Synthesis. ACS APPLIED MATERIALS & INTERFACES 2022; 14:23496-23506. [PMID: 35575596 DOI: 10.1021/acsami.2c03837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this study, a facile microwave-assisted synthesis approach was used to produce a series of bismuth oxyhalide photocatalysts, with systematic changes in synthesis pH between 1 and 14 allowing control over a broad range of material properties and characteristics. Detailed structural and morphological investigations with powder X-ray diffraction (PXRD), Rietveld refinements, pair distribution function (PDF) analysis, and scanning electron microscopy (SEM) show that thin particles of BiOCl, BiOBr, Bi24O31Cl10, and Bi24O31Br10 were selectively produced, with progressive changes in morphology, facet dominance, and phase as a function of pH. The impact of these changes on photocatalytic performance was evaluated by studying the aerobic oxidation of benzylamine to N-benzylidenebenzylamine, with all materials exhibiting photocatalytic abilities under UV or blue light. While a combination of material properties and characteristics influenced the photocatalytic performance, certain factors such as surface area, facet dominance, amorphous content, and band gap were found to have a larger impact on the photocatalytic yield. Overall, this study demonstrates the possibilities of phase, morphology, and performance of bismuth oxyhalide photocatalysts over the entire pH range, produced using a fast and facile microwave-assisted synthesis technique as an alternative to the more widely applied hydrothermal synthesis approach. Additionally, the detailed structural and morphological investigations of the materials contribute to a greater understanding of bismuth oxyhalide photocatalysts in general, while also highlighting some of the most desirable properties for improved photocatalytic performance of these materials.
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Affiliation(s)
- Melissa Marks
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Henrik S Jeppesen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
- Sino-Danish Center for Education and Research (SDC), Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Nina Lock
- Carbon Dioxide Activation Center (CADIAC), Department of Biological and Chemical Engineering and iNANO, Aarhus University, Åbogade 40, DK-8200 Aarhus N, Denmark
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3
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Adenuga D, Skosana S, Tichapondwa S, Chirwa E. Synthesis of a plasmonic AgCl and oxygen-rich Bi 24O 31Cl 10 composite heterogeneous catalyst for enhanced degradation of tetracycline and 2,4-dichlorophenoxy acetic acid. RSC Adv 2021; 11:36760-36768. [PMID: 35494340 PMCID: PMC9043596 DOI: 10.1039/d1ra06855e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 11/08/2021] [Indexed: 01/12/2023] Open
Abstract
In this study, a AgCl/Bi24O31Cl10 composite heterostructure was constructed. Varying ratios of AgCl nanoparticles were immobilised onto the Bi24O31Cl10 rod-like structure. The physical and optical properties of the synthesised catalysts were characterised using a range of techniques. The photocatalytic activity of the catalysts was investigated by the degradation of 2,4-dichlorophenoxy acetic acid (2,4-D) and tetracycline (TC) under visible light irradiation. The performance of the composite photocatalysts was 18 and 3.4 times better in 2-4,D and TC photodegradation when compared to Bi24O31Cl10 alone. The improved photocatalytic performance was due to the surface plasmon resonance (SPR) effects of the Ag nanoparticles deposited on the surface of the Xwt%AgCl/BOC thereby improving the separation of the electron–hole pair. The effects of the initial contaminant concentration, pH, photocatalyst loading were investigated. Trapping experiments were also carried out to deduce the reactive species responsible for the degradation process and a preliminary mechanism of degradation was proposed. Successful mineralisation of 2,4-D and TC at 65% and 63% efficiency was also measured after 24 h and the potential for reusability of the as-synthesised photocatalyst was established. This work reports a promising heterogeneous photocatalyst for the removal of pollutants such as TC and 2,4-D from wastewater. Photocatalytic degradation of tetracycline and 2,4-dichlorophenoxy acetic acid using AgCl/Bi24O31Cl10 photocatalyst in visible light.![]()
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Affiliation(s)
- Dorcas Adenuga
- Water Utilization Division, Department of Chemical Engineering, University of Pretoria Pretoria, Private Bag X20 Hatfield 0028 South Africa
| | - Sifiso Skosana
- Water Utilization Division, Department of Chemical Engineering, University of Pretoria Pretoria, Private Bag X20 Hatfield 0028 South Africa
| | - Shepherd Tichapondwa
- Water Utilization Division, Department of Chemical Engineering, University of Pretoria Pretoria, Private Bag X20 Hatfield 0028 South Africa
| | - Evans Chirwa
- Water Utilization Division, Department of Chemical Engineering, University of Pretoria Pretoria, Private Bag X20 Hatfield 0028 South Africa
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4
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Promoted N N activation by oxygen and boosted ammonia production over Bi4O5Br2. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Li Y, Jiang H, Wang X, Hong X, Liang B. Recent advances in bismuth oxyhalide photocatalysts for degradation of organic pollutants in wastewater. RSC Adv 2021; 11:26855-26875. [PMID: 35479985 PMCID: PMC9037621 DOI: 10.1039/d1ra05796k] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 12/22/2022] Open
Abstract
Photocatalysis has been considered as an environmental-friendly strategy for degradation of organic pollutants to the nontoxic products of H2O and CO2. Compared to metal oxide semiconductors, BiOX (X = Cl, Br and I) photocatalysts exhibit some advantages, such as, unique layered structure, good chemical stability and superior photocatalytic activity. This review provides an overview on the controllable synthesis of BiOX-based photocatalysts and their application in photodegradation of organic pollutants. Firstly, the controllable synthesis of BiOX is introduced, including hydrothermal, solvothermal, hydrolysis, precipitation, two-phase methods, ultrasonic/microwave-assisted methods, and physical methods. Then, the doping and surface modification of BiOX are summarized, including non-metal doping, metal doping, dual doping, and the modification by introducing surface terminations or carriers. In addition, the heterojunctions of BiOX/BiOY and BiOX/Bi m O n X z are introduced. At last, the promising research trends of BiOX-based photocatalysts are put forward. The main purpose is providing practical guidelines for developing high-performance BiOX photocatalysts.
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Affiliation(s)
- Yang Li
- College of Materials Science and Engineering, Liaoning Technical University Fuxin 123000 China
| | - Haiyan Jiang
- Basic Department, Liaoning Institute of Science and Technology Benxi 117004 China
| | - Xu Wang
- College of Materials Science and Engineering, Liaoning Technical University Fuxin 123000 China
| | - Xiaodong Hong
- School of Materials Science and Hydrogen Energy, Foshan University Foshan 528000 China
| | - Bing Liang
- College of Materials Science and Engineering, Shenyang University of Chemical Technology Shenyang 110142 China
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6
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Wei X, Akbar MU, Raza A, Li G. A review on bismuth oxyhalide based materials for photocatalysis. NANOSCALE ADVANCES 2021; 3:3353-3372. [PMID: 36133717 PMCID: PMC9418972 DOI: 10.1039/d1na00223f] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/01/2021] [Indexed: 05/04/2023]
Abstract
Photocatalytic solar energy transformation is the most encouraging solution to alleviate the environmental crisis and energy scarcity. Bismuth oxyhalide (BiOX) is an emerging class of materials that exhibits photocatalytic properties, such as resilient response to light, which causes enhanced energy conversion (solar energy) owing to their exceptional layered structure and attractive band structure. The present review presents a summary of results from the recent developments on the tuning and design of BiOX-based materials to improve the energy conversion. In particular, the preparation and tuning approaches that have the potential to enhance the photocatalytic behavior of BiOX and some other techniques, such as elemental doping, are addressed, which prevent the rapid recombination of charges, and formation of oxygen vacancies, facilitating an improvement in the photocatalytic reaction. Various frameworks are also presented, displaying the significance of BiOX-based nanocomposites. Finally, the main challenges and opportunities associated with the future progress of BiOX-based materials are presented. This review will provide an extended understanding and offer a preferred direction for the innovative design of BiOX-based materials for environmental and especially energy-based applications.
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Affiliation(s)
- Xuejiao Wei
- School of Chemical Engineering and Materials, Changzhou Institute of Technology Changzhou 213032 China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Muhammad Usama Akbar
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore Punjab 54000 Pakistan
| | - Ali Raza
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore Punjab 54000 Pakistan
| | - Gao Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
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7
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Zheng H, Chen G, Zhang A, Tan Z, Wang R, Wang H, Mei Y, Zhang X, Ran J. Enhanced photocatalytic activity of Bi24O31Br10 microsheets constructing heterojunction with AgI for Hg0 removal. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118296] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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Lagopati N, Evangelou K, Falaras P, Tsilibary EPC, Vasileiou PVS, Havaki S, Angelopoulou A, Pavlatou EA, Gorgoulis VG. Nanomedicine: Photo-activated nanostructured titanium dioxide, as a promising anticancer agent. Pharmacol Ther 2020; 222:107795. [PMID: 33358928 DOI: 10.1016/j.pharmthera.2020.107795] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 12/17/2020] [Indexed: 12/14/2022]
Abstract
The multivariate condition of cancer disease has been approached in various ways, by the scientific community. Recent studies focus on individualized treatments, minimizing the undesirable consequences of the conventional methods, but the development of an alternative effective therapeutic scheme remains to be held. Nanomedicine could provide a solution, filling this gap, exploiting the unique properties of innovative nanostructured materials. Nanostructured titanium dioxide (TiO2) has a variety of applications of daily routine and of advanced technology. Due to its biocompatibility, it has also a great number of biomedical applications. It is now clear that photo-excited TiO2 nanoparticles, induce generation of pairs of electrons and holes which react with water and oxygen to yield reactive oxygen species (ROS) that have been proven to damage cancer cells, triggering controlled cellular processes. The aim of this review is to provide insights into the field of nanomedicine and particularly into the wide context of TiO2-NP-mediated anticancer effect, shedding light on the achievements of nanotechnology and proposing this nanostructured material as a promising anticancer photosensitizer.
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Affiliation(s)
- Nefeli Lagopati
- Laboratory of Histology-Embryology, Molecular Carcinogenesis Group, Faculty of Medicine, School of Health Science, National and Kapodistrian University of Athens, 75, Mikras Asias Str., Goudi, GR 11527 Athens, Greece; Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 9, Iroon Polytechniou str., GR 15780 Zografou, Athens, Greece.
| | - Konstantinos Evangelou
- Laboratory of Histology-Embryology, Molecular Carcinogenesis Group, Faculty of Medicine, School of Health Science, National and Kapodistrian University of Athens, 75, Mikras Asias Str., Goudi, GR 11527 Athens, Greece.
| | - Polycarpos Falaras
- Institute of Nanoscience and Nanotechnology, Laboratory of Nanotechnology Processes for Solar Energy Conversion and Environmental Protection, National Centre for Scientific Research "Demokritos", Patriarchou Gregoriou E & 27 Neapoleos Str., GR 15341 Agia Paraskevi, Athens, Greece.
| | | | - Panagiotis V S Vasileiou
- Laboratory of Histology-Embryology, Molecular Carcinogenesis Group, Faculty of Medicine, School of Health Science, National and Kapodistrian University of Athens, 75, Mikras Asias Str., Goudi, GR 11527 Athens, Greece
| | - Sofia Havaki
- Laboratory of Histology-Embryology, Molecular Carcinogenesis Group, Faculty of Medicine, School of Health Science, National and Kapodistrian University of Athens, 75, Mikras Asias Str., Goudi, GR 11527 Athens, Greece.
| | - Andriani Angelopoulou
- Laboratory of Histology-Embryology, Molecular Carcinogenesis Group, Faculty of Medicine, School of Health Science, National and Kapodistrian University of Athens, 75, Mikras Asias Str., Goudi, GR 11527 Athens, Greece
| | - Evangelia A Pavlatou
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 9, Iroon Polytechniou str., GR 15780 Zografou, Athens, Greece.
| | - Vassilis G Gorgoulis
- Laboratory of Histology-Embryology, Molecular Carcinogenesis Group, Faculty of Medicine, School of Health Science, National and Kapodistrian University of Athens, 75, Mikras Asias Str., Goudi, GR 11527 Athens, Greece; Biomedical Research Foundation Academy of Athens, Athens, Greece; Faculty of Biology, Medicine and Health Manchester Cancer Research Centre, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK; Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
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9
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Fenelon E, Bui DP, Tran HH, You SJ, Wang YF, Cao TM, Van Pham V. Straightforward Synthesis of SnO 2/Bi 2S 3/BiOCl-Bi 24O 31Cl 10 Composites for Drastically Enhancing Rhodamine B Photocatalytic Degradation under Visible Light. ACS OMEGA 2020; 5:20438-20449. [PMID: 32832797 PMCID: PMC7439386 DOI: 10.1021/acsomega.0c02461] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 07/27/2020] [Indexed: 05/13/2023]
Abstract
The pursuit of robust photocatalysts that can completely degrade organic contaminants with high performance as well as high energy efficiency, simplicity in preparation, and low cost is an appealing topic that potentially promotes photocatalysts for being used widely. Herein, we introduce a new and efficient SnO2/Bi2S3/BiOCl-Bi24O31Cl10 (SnO2/Bi2S3-Bi25) composite photocatalyst by taking advantage of the robust, simple, and potentially scalable one-pot synthesis, including the hydrothermal process followed by thermal decomposition. Interestingly, we observed the formation of BiOCl-Bi24O31Cl10 (abbreviated as Bi25) heterojunctions derived from reactions between Bi2S3 and SnCl4·5H2O precursor solutions under the hydrothermal condition and thermal decomposition of BiOCl. This Bi25 heterojunction acts as an interface to reduce the recombination of photogenerated electron-hole (e--h+) pairs as well as to massively enhance the visible light harvesting, thereby significantly enhancing the photocatalytic degradation performance of the as-prepared composite photocatalyst. In detail, the photocatalytic degradation of Rhodamine B (RhB) activated by visible light using 15% SnO2/Bi2S3-Bi25 shows the efficiency of 80.8%, which is superior compared to that of pure Bi2S3 (29.4%) and SnO2 (0.1%). The SnO2/Bi2S3-Bi25 composite photocatalyst also presents an excellent photostability and easy recovery from dye for recycling. The trapping test revealed that the photogenerated holes play a crucial factor during the photocatalytic process, whereas superoxide radicals are also formed but not involved in the photocatalytic process. Successful fabrication of SnO2/Bi2S3-Bi25 composite photocatalysts via a straightforward method with drastically enhanced photocatalytic performance under visible light activation would be useful for practical applications.
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Affiliation(s)
- Ernso Fenelon
- Department
of Environmental Engineering, Chung Yuan
Christian University, Chung-Li 320, Taiwan
- Department
of Civil Engineering, Chung Yuan Christian
University, Chung-Li 320, Taiwan
| | - Dai-Phat Bui
- Ho
Chi Minh City University of Technology (HUTECH), 475A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City 700000, Vietnam
- Faculty
of Materials Science and Technology, University
of Science, VNU−HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi
Minh City 700000, Vietnam
| | - Huy Hong Tran
- Faculty
of Materials Science and Technology, University
of Science, VNU−HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi
Minh City 700000, Vietnam
| | - Sheng-Jie You
- Department
of Environmental Engineering, Chung Yuan
Christian University, Chung-Li 320, Taiwan
- Research
and Development Center for Membrane Technology, Chung-Li 320, Taiwan
| | - Ya-Fen Wang
- Department
of Environmental Engineering, Chung Yuan
Christian University, Chung-Li 320, Taiwan
- Research
and Development Center for Membrane Technology, Chung-Li 320, Taiwan
| | - Thi Minh Cao
- Ho
Chi Minh City University of Technology (HUTECH), 475A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City 700000, Vietnam
| | - Viet Van Pham
- Faculty
of Materials Science and Technology, University
of Science, VNU−HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi
Minh City 700000, Vietnam
- Vietnam
National University−Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam
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10
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Exploring the visible light driven photocatalysis by reduced graphene oxide supported Ppy/CdS nanocomposites for the degradation of organic pollutants. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112129] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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11
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Jin X, Lv C, Zhou X, Ye L, Xie H, Liu Y, Su H, Zhang B, Chen G. Oxygen Vacancy Engineering of Bi 24 O 31 Cl 10 for Boosted Photocatalytic CO 2 Conversion. CHEMSUSCHEM 2019; 12:2740-2747. [PMID: 30941909 DOI: 10.1002/cssc.201900621] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 03/24/2019] [Indexed: 06/09/2023]
Abstract
Unearthing an ideal model to describe the role of defect sites for boosting photocatalytic CO2 reduction is rational and necessary, but it still remains a significant challenge. Herein, oxygen vacancies are introduced on the surface of Bi24 O31 Cl10 photocatalyst (Bi24 O31 Cl10 -OV) for fine-tuning the photocatalytic efficiency. The formation of oxygen vacancies leads to a new donor level near the conduction band minimum, which enables a faster charge transfer and higher carrier density. Moreover, oxygen vacancies can considerably reduce the energy for the formation of COOH* intermediates during CO2 conversion. As a result, the activity of Bi24 O31 Cl10 -OV for selective photoreduction of CO2 to CO is significantly improved, with a CO generation rate of 0.9 μmol h-1 g-1 , which is nearly 4 times higher than that of pristine Bi24 O31 Cl10 . This study reinforces our understanding of defect engineering in Bi-based photocatalysts and underscores the potential importance of implanting oxygen vacancies as an effective strategy for solar energy conversion.
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Affiliation(s)
- Xiaoli Jin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P.R. China
| | - Chade Lv
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P.R. China
| | - Xin Zhou
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P.R. China
| | - Liqun Ye
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, P. R. China
| | - Haiquan Xie
- Engineering Technology Research Center of Henan Province for Solar Catalysis, Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, 473061, P.R. China
| | - Yue Liu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P.R. China
| | - Huan Su
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P.R. China
| | - Biao Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P.R. China
| | - Gang Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P.R. China
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12
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Pt/Bi24O31Cl10 composite nanosheets with significantly enhanced photocatalytic activity under visible light irradiation. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(18)63156-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Hu J, Li X, Wang X, Li Q, Wang F. Novel hierarchical Sn3O4/BiOX (X = Cl, Br, I) p–n heterostructures with enhanced photocatalytic activity under simulated solar light irradiation. Dalton Trans 2019; 48:8937-8947. [DOI: 10.1039/c9dt01184f] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sn3O4/BiOX (X = Cl, Br, I), a series of p–n-heterojunction-based photocatalysts, were prepared by a combination of an ultrasonic-assisted precipitation–deposition method and hydrothermal method.
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Affiliation(s)
- Jianling Hu
- Department of Physics
- School of Mathematics and Physics
- University of Science and Technology Beijing
- Beijing
- PR China
| | - Xingyang Li
- Department of Physics and Astronomy
- University of Georgia
- Athens
- USA
| | - Xiaodan Wang
- Department of Physics
- School of Mathematics and Physics
- University of Science and Technology Beijing
- Beijing
- PR China
| | - Quanshui Li
- Department of Physics
- School of Mathematics and Physics
- University of Science and Technology Beijing
- Beijing
- PR China
| | - Fengping Wang
- Department of Physics
- School of Mathematics and Physics
- University of Science and Technology Beijing
- Beijing
- PR China
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14
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Zhang L, Niu CG, Zhao XF, Liang C, Guo H, Zeng GM. Ultrathin BiOCl Single-Crystalline Nanosheets with Large Reactive Facets Area and High Electron Mobility Efficiency: A Superior Candidate for High-Performance Dye Self-Photosensitization Photocatalytic Fuel Cell. ACS APPLIED MATERIALS & INTERFACES 2018; 10:39723-39734. [PMID: 30379529 DOI: 10.1021/acsami.8b14227] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Strong dye adsorption and fast electron transfer are of crucial importance to achieve high conversion efficiency of dye self-photosensitization photocatalytic fuel cells (DSPFCs). In this study, we have experimentally achieved the enhanced cell performance in ultrathin BiOCl{010} (BOC(010)-U) nanosheets and provide an idea to investigate the relationship between the physical structure and the chemical performance of semiconductor materials. Experimental phenomenon showed that the exposed areas of highly active {010} facets were remarkably enhanced with the decrease of the BiOCl thickness. The large area of {010} facets with abundant active sites and open channel characteristic were exposed to facilitate photosensitization process, and the atomically thin structure was designed to speed up electron transfer. By employing 40 mL of 5 mg/L rhodamine B as fuel, it was found that the BOC(010)-U photoanode exhibited superior photovoltaic performance and photocatalytic degradation activity than other materials in the DSPFC system, whose Jsc and Voc were measured to be 0.00865 mA/cm2 and 0.731 V, respectively. Besides, about 72% color removal efficiency and 10.77% Coulombic efficiency were obtained under visible light irradiation for 240 min. The experimental results and multiple characterizations demonstrated that the strong dye adsorption ability and efficient charge migration were responsible for the sustaining generation of photocurrent and enhancement of pollutants degradation activity.
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Affiliation(s)
- Lei Zhang
- College of Environmental Science Engineering, Key Laboratory of Environmental Biology Pollution Control, Ministry of Education , Hunan University , Changsha 410082 , China
| | - Cheng-Gang Niu
- College of Environmental Science Engineering, Key Laboratory of Environmental Biology Pollution Control, Ministry of Education , Hunan University , Changsha 410082 , China
| | - Xiu-Fei Zhao
- College of Environmental Science Engineering, Key Laboratory of Environmental Biology Pollution Control, Ministry of Education , Hunan University , Changsha 410082 , China
| | - Chao Liang
- College of Environmental Science Engineering, Key Laboratory of Environmental Biology Pollution Control, Ministry of Education , Hunan University , Changsha 410082 , China
| | - Hai Guo
- College of Environmental Science Engineering, Key Laboratory of Environmental Biology Pollution Control, Ministry of Education , Hunan University , Changsha 410082 , China
| | - Guang-Ming Zeng
- College of Environmental Science Engineering, Key Laboratory of Environmental Biology Pollution Control, Ministry of Education , Hunan University , Changsha 410082 , China
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15
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Chang F, Wu F, Zheng J, Cheng W, Yan W, Deng B, Hu X. In-situ establishment of binary composites α-Fe 2O 3/Bi 12O 17Cl 2 with both photocatalytic and photo-Fenton features. CHEMOSPHERE 2018; 210:257-266. [PMID: 30005347 DOI: 10.1016/j.chemosphere.2018.07.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 06/09/2018] [Accepted: 07/02/2018] [Indexed: 06/08/2023]
Abstract
A set of binary composites α-Fe2O3/Bi12O17Cl2 were established through an in-situ deposition route and these samples were systematically characterized by a collection of analytical techniques. Scanning electron microscopy, UV-vis diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy proved the coexistence of expected two components. High resolution transmission electron microscopy and selected-area electron diffraction indicated the formation of heterojunction domains with the intimate contact of both semiconductors. The degradation behavior of as-synthesized samples was evaluated under visible-light irradiation and the enhanced outcome was observed over dye methyl orange (MO) and colorless 2,4-dichlorophenol (2,4-DCP), mainly attributing to favorable optical and morphological merits, and a suitable well-aligned band structure in these binary composites with a suitable phase composition as well. In addition, these composites showed an obvious photo-Fenton feature that significantly improved the catalytic degradation efficiency over 2,4-DCP when the reagent H2O2 was introduced, indicating the destruction efficiency was controlled by a synergtic effect from both photocatalytic and photo-Fenton degradation routes. Based upon the detection of reactive radical species, a primary synergistic mechanism was eventually speculated.
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Affiliation(s)
- Fei Chang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, PR China.
| | - Feiyan Wu
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - JiaoJiao Zheng
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Wenbo Cheng
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Wenjing Yan
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Baoqing Deng
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Xuefeng Hu
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China.
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16
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Li J, Li Y. Room-Temperature Synthesis and Enhanced Photocatalytic Performance of BiOCl Microsphere. ChemistrySelect 2018. [DOI: 10.1002/slct.201800078] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jin Li
- Department College of Chemistry and Chemical Engineering; and Henan Key Laboratory of Function-Oriented Porous Materials; Institution Luoyang Normal University; Jiqing road 6 Luoyang 471934 China
| | - Yuanrui Li
- Department College of Chemistry and Chemical Engineering; and Henan Key Laboratory of Function-Oriented Porous Materials; Institution Luoyang Normal University; Jiqing road 6 Luoyang 471934 China
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17
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Dhanabal R, Velmathi S, Bose AC. Fabrication of RuO 2-Ag 3PO 4 heterostructure nanocomposites: Investigations of band alignment on the enhanced visible light photocatalytic activity. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:865-874. [PMID: 29190584 DOI: 10.1016/j.jhazmat.2017.11.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 11/09/2017] [Accepted: 11/17/2017] [Indexed: 06/07/2023]
Abstract
The RuO2-Ag3PO4 heterostructured nanocomposite was successfully synthesized by facile in situ deposition of porous ruthenium oxide (RuO2) nanoparticles on the surface of the silver phosphate (Ag3PO4). Under visible light irradiation, the 0.5wt.% RuO2-Ag3PO4 heterostructure photocatalyst exhibits enhanced photocatalytic efficiency compared to other composites of RuO2-Ag3PO4 and Ag3PO4. The optimized 0.5wt.% RuO2-Ag3PO4 nanocomposites exhibited 1.5 times enhanced photocatalytic activity towards the degradation of methylene blue (MB) than Ag3PO4. Moreover, the degradation rate of 0.5wt.% RuO2-Ag3PO4 nanocomposite towards the cationic dyes MB and rhodamine B (RhB) was nearly 6.6 times and 4.7 times higher than that towards the anionic dye methyl orange (MO). The formed heterojunction electric field of 310mV at the interface between RuO2 and Ag3PO4 heterostructure induces downward band bending of Ag3PO4. Also, this electric field increases the separation efficiency of electrons-holes resulting higher degradation efficiency. The quenching effect of scavengers test confirms that holes are reactive species and the RuO2-Ag3PO4 nanocomposite is highly stable, exhibited 88% of MB degradation after 4 recycles. The RuO2-Ag3PO4 nanocomposites inhibit self oxidation of Ag3PO4 resulting improved efficiency and stability.
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Affiliation(s)
- Rengasamy Dhanabal
- Nanomaterials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli, 620 015, India
| | - Sivan Velmathi
- Organic and Polymer Synthesis Laboratory, Department of Chemistry, National Institute of Technology, Tiruchirappalli, 620 015, India
| | - Arumugam Chandra Bose
- Nanomaterials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli, 620 015, India.
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18
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Oh J, Shim Y, Lee S, Park S, Jang D, Shin Y, Ohn S, Kim J, Park S. Structural insights into photocatalytic performance of carbon nitrides for degradation of organic pollutants. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2017.11.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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19
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Fujisawa JI, Osawa A, Hanaya M. A strategy to minimize the energy offset in carrier injection from excited dyes to inorganic semiconductors for efficient dye-sensitized solar energy conversion. Phys Chem Chem Phys 2018; 18:22244-53. [PMID: 27452717 DOI: 10.1039/c6cp04133g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoinduced carrier injection from dyes to inorganic semiconductors is a crucial process in various dye-sensitized solar energy conversions such as photovoltaics and photocatalysis. It has been reported that an energy offset larger than 0.2-0.3 eV (threshold value) is required for efficient electron injection from excited dyes to metal-oxide semiconductors such as titanium dioxide (TiO2). Because the energy offset directly causes loss in the potential of injected electrons, it is a crucial issue to minimize the energy offset for efficient solar energy conversions. However, a fundamental understanding of the energy offset, especially the threshold value, has not been obtained yet. In this paper, we report the origin of the threshold value of the energy offset, solving the long-standing questions of why such a large energy offset is necessary for the electron injection and which factors govern the threshold value, and suggest a strategy to minimize the threshold value. The threshold value is determined by the sum of two reorganization energies in one-electron reduction of semiconductors and typically-used donor-acceptor (D-A) dyes. In fact, the estimated values (0.21-0.31 eV) for several D-A dyes are in good agreement with the threshold value, supporting our conclusion. In addition, our results reveal that the threshold value is possible to be reduced by enlarging the π-conjugated system of the acceptor moiety in dyes and enhancing its structural rigidity. Furthermore, we extend the analysis to hole injection from excited dyes to semiconductors. In this case, the threshold value is given by the sum of two reorganization energies in one-electron oxidation of semiconductors and D-A dyes.
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Affiliation(s)
- Jun-Ichi Fujisawa
- Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Ayumi Osawa
- Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Minoru Hanaya
- Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
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20
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Solid phase fabrication of Bismuth-rich Bi3O4Cl Br1− solid solution for enhanced photocatalytic NO removal under visible light. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2017.10.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Xu J, Mao YG, Liu T, Peng Y. Synthesis of a novel one-dimensional BiOBr–Bi4O5Br2 heterostructure with a high quality interface and its enhanced visible-light photocatalytic activity. CrystEngComm 2018. [DOI: 10.1039/c8ce00157j] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A novel rod-like BiOBr–Bi4O5Br2 heterostructure with a high quality interface is synthesized by calcining a BiOBr precursor in air. The BiOBr–Bi4O5Br2 heterostructure exhibits outstanding photocatalytic activity for degrading RhB dyes at high concentrations under visible/solar light irradiation.
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Affiliation(s)
- Jian Xu
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Yan-Ge Mao
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Ting Liu
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
| | - Yin Peng
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
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22
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Zheng J, Chang F, Jiao M, Xu Q, Deng B, Hu X. A visible-light-driven heterojuncted composite WO3/Bi12O17Cl2: Synthesis, characterization, and improved photocatalytic performance. J Colloid Interface Sci 2018; 510:20-31. [DOI: 10.1016/j.jcis.2017.07.119] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 07/18/2017] [Indexed: 10/18/2022]
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23
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Jin X, Ye L, Xie H, Chen G. Bismuth-rich bismuth oxyhalides for environmental and energy photocatalysis. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.08.010] [Citation(s) in RCA: 242] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Yin B, Fang Z, Luo B, Zhang G, Shi W. Facile Preparation of Bi24O31Cl10 Nanosheets for Visible-Light-Driven Photocatalytic Degradation of Tetracycline Hydrochloride. Catal Letters 2017. [DOI: 10.1007/s10562-017-2115-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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25
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Soliman KA, Zedan AF, Khalifa A, El-Sayed HA, Aljaber AS, AlQaradawi SY, Allam NK. Silver Nanoparticles-Decorated Titanium Oxynitride Nanotube Arrays for Enhanced Solar Fuel Generation. Sci Rep 2017; 7:1913. [PMID: 28507303 PMCID: PMC5432516 DOI: 10.1038/s41598-017-02124-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 04/06/2017] [Indexed: 11/08/2022] Open
Abstract
We demonstrate, for the first time, the synthesis of highly ordered titanium oxynitride nanotube arrays sensitized with Ag nanoparticles (Ag/TiON) as an attractive class of materials for visible-light-driven water splitting. The nanostructure topology of TiO2, TiON and Ag/TiON was investigated using FESEM and TEM. The X-ray photoelectron spectroscopy (XPS) and the energy dispersive X-ray spectroscopy (EDS) analyses confirm the formation of the oxynitride structure. Upon their use to split water photoelectrochemically under AM 1.5 G illumination (100 mW/cm2, 0.1 M KOH), the titanium oxynitride nanotube array films showed significant increase in the photocurrent (6 mA/cm2) compared to the TiO2 nanotubes counterpart (0.15 mA/cm2). Moreover, decorating the TiON nanotubes with Ag nanoparticles (13 ± 2 nm in size) resulted in exceptionally high photocurrent reaching 14 mA/cm2 at 1.0 VSCE. This enhancement in the photocurrent is related to the synergistic effects of Ag decoration, nitrogen doping, and the unique structural properties of the fabricated nanotube arrays.
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Affiliation(s)
- Khaled A Soliman
- Department of Chemistry and Earth Sciences, Qatar University, Doha, 2713, Qatar
- Physical Chemistry Department, National Research Centre, Dokki, Cairo, 12441, Egypt
| | - Abdallah F Zedan
- Department of Chemistry and Earth Sciences, Qatar University, Doha, 2713, Qatar
- National Institute of Laser Enhanced Science, Cairo University, Giza, 12613, Egypt
| | - Ahmed Khalifa
- Energy Materials Laboratory (EML), School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt
| | - Hany A El-Sayed
- Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Amina S Aljaber
- Department of Chemistry and Earth Sciences, Qatar University, Doha, 2713, Qatar
| | - Siham Y AlQaradawi
- Department of Chemistry and Earth Sciences, Qatar University, Doha, 2713, Qatar
| | - Nageh K Allam
- Energy Materials Laboratory (EML), School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt.
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26
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Lou Z, Wang P, Huang B, Dai Y, Qin X, Zhang X, Wang Z, Liu Y. Enhancing Charge Separation in Photocatalysts with Internal Polar Electric Fields. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201600057] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Zaizhu Lou
- State Key Lab of Crystal Materials; Shandong University; Jinan 250100 China
| | - Peng Wang
- State Key Lab of Crystal Materials; Shandong University; Jinan 250100 China
| | - Baibiao Huang
- State Key Lab of Crystal Materials; Shandong University; Jinan 250100 China
| | - Ying Dai
- School of Physics; Shandong University; Jinan 250100 China
| | - Xiaoyan Qin
- State Key Lab of Crystal Materials; Shandong University; Jinan 250100 China
| | - Xiaoyang Zhang
- State Key Lab of Crystal Materials; Shandong University; Jinan 250100 China
| | - Zeyan Wang
- State Key Lab of Crystal Materials; Shandong University; Jinan 250100 China
| | - Yuanyuan Liu
- State Key Lab of Crystal Materials; Shandong University; Jinan 250100 China
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27
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Al-Keisy A, Ren L, Zheng T, Xu X, Higgins M, Hao W, Du Y. Enhancement of charge separation in ferroelectric heterogeneous photocatalyst Bi4(SiO4)3/Bi2SiO5 nanostructures. Dalton Trans 2017; 46:15582-15588. [DOI: 10.1039/c7dt03193a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Excellent photocatalytic activity is given rise to enhanced charge separation in ferroelectric heterogeneous Bi4(SiO4)3/Bi2SiO5 photocatalyst.
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Affiliation(s)
- Amar Al-Keisy
- Institute for Superconducting and Electronic Materials (ISEM)
- University of Wollongong
- Wollongong
- Australia
- University of Technology
| | - Long Ren
- Institute for Superconducting and Electronic Materials (ISEM)
- University of Wollongong
- Wollongong
- Australia
| | - Tian Zheng
- Intelligent Polymer Research Institute (IPRI)
- University of Wollongong
- Wollongong
- Australia
| | - Xun Xu
- Institute for Superconducting and Electronic Materials (ISEM)
- University of Wollongong
- Wollongong
- Australia
| | - Michael Higgins
- Intelligent Polymer Research Institute (IPRI)
- University of Wollongong
- Wollongong
- Australia
| | - Weichang Hao
- Department of Physics and Key Laboratory of Micro-nano Measurement
- Manipulation and Physics
- Ministry of Education (MOE)
- Beihang University
- Beijing 100191
| | - Yi Du
- Institute for Superconducting and Electronic Materials (ISEM)
- University of Wollongong
- Wollongong
- Australia
- BUAA-UOW Joint Research Centre
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28
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Xu B, Wang X, Zhu C, Ran X, Li T, Guo L. Probing the inhomogeneity and intermediates in the photosensitized degradation of rhodamine B by Ag3PO4 nanoparticles from an ensemble to a single molecule approach. RSC Adv 2017. [DOI: 10.1039/c7ra07163a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
This work reports the single-molecule observations of the photosensitized process and intermediates generation in the photodegradation of RhB by Ag3PO4 nanoparticles.
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Affiliation(s)
- Beibei Xu
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- P. R. China
| | - Xiaojuan Wang
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- P. R. China
| | - Chaofeng Zhu
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- P. R. China
| | - Xia Ran
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- P. R. China
| | - Tianfeng Li
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- P. R. China
| | - Lijun Guo
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- P. R. China
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29
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Ding S, Xiong X, Liu X, Shi Y, Jiang Q, Hu J. Synthesis and characterization of single-crystalline Bi2O2SiO3 nanosheets with exposed {001} facets. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01291h] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Bismuth oxide silicate (Bi2O2SiO3) single-crystalline nanosheets with exposed {001} facets were synthesized for the first time via a facile one-step CTAB-assisted hydrothermal method in the presence of NaOH.
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Affiliation(s)
- Shuoping Ding
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
| | - Xuyang Xiong
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
| | - Xiufan Liu
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
| | - Yiqiu Shi
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
| | - Qingqing Jiang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
| | - Juncheng Hu
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
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30
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Cui Z, Yang H, Wang B, Li R, Wang X. Effect of Experimental Parameters on the Hydrothermal Synthesis of Bi2WO6 Nanostructures. NANOSCALE RESEARCH LETTERS 2016; 11:190. [PMID: 27067738 PMCID: PMC4828365 DOI: 10.1186/s11671-016-1413-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 04/04/2016] [Indexed: 05/23/2023]
Abstract
Bi2WO6 nanostructures were synthesized by a hydrothermal route, where the effect of various experimental parameters on the products was investigated. It is demonstrated that the sample morphology and size is highly dependent on the NaOH content (or pH value). At C NaOH = 0-0.0175 mol (pH range of 1-4), the prepared samples present flower-like hierarchical microspheres which are constructed from thin nanosheets via the self-assembly process. The size of the hierarchical microspheres exhibits a decreasing trend with increasing the NaOH content, from 7 μm at C NaOH = 0 mol to 1.5 μm at C NaOH = 0.0175 mol. At C NaOH = 0.03-0.0545 mol (pH: 5-9), the prepared samples exhibit irregular flake-like structures, and their size increases with the increase in NaOH content. At C NaOH = 0.055-0.05525 mol (pH: 10-11), the prepared samples are composed of uniform sphere-like particles with an average size of 85 nm. Compared to the NaOH content, the reaction temperature and time has a relatively small effect on the product morphology and size. The photocatalytic activity of the samples was evaluated by degrading rhodamine B (RhB) under irradiation of simulated sunlight. Among these samples, the samples composed of flower-like hierarchical microspheres have relatively high photocatalytic activity. In particular, the microspheres prepared at C NaOH = 0.01 mol exhibit the highest photocatalytic activity, and the degradation percentage reaches 99 % after 2 h of irradiation.
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Affiliation(s)
- Ziming Cui
- School of Science, Lanzhou University of Technology, Lanzhou, 730050 People’s Republic of China
| | - Hua Yang
- School of Science, Lanzhou University of Technology, Lanzhou, 730050 People’s Republic of China
| | - Bin Wang
- School of Science, Lanzhou University of Technology, Lanzhou, 730050 People’s Republic of China
| | - Ruishan Li
- School of Science, Lanzhou University of Technology, Lanzhou, 730050 People’s Republic of China
| | - Xiangxian Wang
- School of Science, Lanzhou University of Technology, Lanzhou, 730050 People’s Republic of China
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31
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Liu X, Su Y, Zhao Q, Du C, Liu Z. Constructing Bi24O31Cl10/BiOCl heterojunction via a simple thermal annealing route for achieving enhanced photocatalytic activity and selectivity. Sci Rep 2016; 6:28689. [PMID: 27340032 PMCID: PMC4919631 DOI: 10.1038/srep28689] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 06/08/2016] [Indexed: 11/09/2022] Open
Abstract
This work reports on the construction of a Bi24O31Cl10/BiOCl heterojunction via a simple thermal annealing method. The X-ray diffraction (XRD) results indicated that the phase transformation from BiOCl to Bi24O31Cl10 could be realized during the thermal annealing process. The high-resolution transmission electron microscopy (HRTEM) images, X-ray photoelectron spectroscopy (XPS) binding energy shifts, Raman spectra and Fouier transform infrared spectroscopy (FT-IR) spectra confirmed the formation of the Bi24O31Cl10/BiOCl heterojunction. The obtained Bi24O31Cl10/BiOCl photocatalyst showed excellent conversion efficiency and selectivity toward photocatalytic conversion of benzyl alcohol to benzaldehyde under visible light irradiation. The radical scavengers and electron spin resonance (ESR) results suggested that the photogenerated holes were the dominant reactive species responsible for the photocatalytic oxidation of benzyl alcohol and superoxide radicals were not involved in the photocatalytic process. The in-situ generation of Bi24O31Cl10/BiOCl heterojunction may own superior interfacial contact than the two-step synthesized heterojunctions, which promotes the transfer of photogenerated charge carriers and is favorable for excellent photocatalytic activities.
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Affiliation(s)
- Xiaoyan Liu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021, P. R. China
| | - Yiguo Su
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021, P. R. China
| | - Qihang Zhao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021, P. R. China
| | - Chunfang Du
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021, P. R. China
| | - Zhiliang Liu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia 010021, P. R. China
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32
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Wang XJ, Zhao Y, Li FT, Dou LJ, Li YP, Zhao J, Hao YJ. A Chelation Strategy for In-situ Constructing Surface Oxygen Vacancy on {001} Facets Exposed BiOBr Nanosheets. Sci Rep 2016; 6:24918. [PMID: 27114050 PMCID: PMC4845065 DOI: 10.1038/srep24918] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 04/07/2016] [Indexed: 11/10/2022] Open
Abstract
Surface defect of nanomaterials is an important physical parameter which significantly influences their physical and chemical performances. In this work, high concentration of surface oxygen vancancies (SOVs) are successfully introduced on {001} facets exposed BiOBr nanosheets via a simple surface modification using polybasic carboxylic acids. The chelation interaction between carboxylic acid anions and Bi(3+) results in the weakness of Bi-O bond of BiOBr. Afterwards, under visible-light irradiation, the oxygen atoms would absorb the photo-energy and then be released from the surface of BiOBr, leaving SOVs. The electron spin resonance (ESR), high-resolution transmission electron microscopy (HRTEM), and UV-vis diffuse reflectance spectra (DRS) measurements confirm the existence of SOVs. The SOVs can enhance the absorption in visible light region and improve the separation efficiency of photo-generated charges. Hence, the transformation rate of adsorbed O2 on the as-prepared BiOBr with SOVs to superoxide anion radicals (•O2(-)) and the photocatalytic activity are greatly enhanced. Based on the modification by several carboxylic acids and the photocatalytic results, we propose that carboxylic acids with natural bond orbital (NBO) electrostatic charges absolute values greater than 0.830 are effective in modifying BiOBr.
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Affiliation(s)
- Xiao-Jing Wang
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Ying Zhao
- College of Science, Agricultural University of Hebei, BaoDing, 071001, China
| | - Fa-Tang Li
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Li-Jun Dou
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Yu-Pei Li
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Jun Zhao
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Ying-Juan Hao
- College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
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33
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Zhong W, Lou Y, Jin S, Wang W, Guo L. A new Bi-based visible-light-sensitive photocatalyst BiLa1.4Ca0.6O4.2: crystal structure, optical property and photocatalytic activity. Sci Rep 2016; 6:23235. [PMID: 26984371 PMCID: PMC4794645 DOI: 10.1038/srep23235] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 02/26/2016] [Indexed: 12/03/2022] Open
Abstract
A new compound of BiLa1.4Ca0.6O4.2 is synthesized through solid state reaction, where the Ca substitutes, in part, the La site in a stable BiLa2O4.5 phase. The structure of the BiLa1.4Ca0.6O4.2 crystallizes in space group R3mH with a hexagonal lattice constants of a = 3.893(1) Å, c = 9.891(1) Å. Its optical absorption edge is about 2.05 eV, which just spans the visible light region. The photocatalytic activity of the BiLa1.4Ca0.6O4.2 powder to degradation of RhB under visible light irradiation is measured and improved more than 7 times by annealing in nitrogen ambient, indicating that annealing in nitrogen can effectively improve the photocatalytic activity by producing oxygen vacancy. Although the absolute photocatalytic activity obtained is low, there is great potential for enhancing the activity such as nanoscaling, doping, and coupling with other compounds.
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Affiliation(s)
- WenWu Zhong
- Department of Materials, Taizhou University, Taizhou 318000, China.,Research &Development Center for Functional Crystals, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - YanFang Lou
- Research &Development Center for Functional Crystals, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - ShiFeng Jin
- Research &Development Center for Functional Crystals, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - WenJun Wang
- Research &Development Center for Functional Crystals, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - LiWei Guo
- Research &Development Center for Functional Crystals, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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34
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Wang CY, Zhang X, Song XN, Wang WK, Yu HQ. Novel Bi₁₂O₁₅Cl₆ Photocatalyst for the Degradation of Bisphenol A under Visible-Light Irradiation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5320-5326. [PMID: 26848924 DOI: 10.1021/acsami.5b12092] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Bisphenol A (BPA), a typical endocrine-disrupting chemical, is widely present in water environments, and its efficient and cost-effective removal is greatly needed. Among various physicochemical methods for BPA degradation, visible-light-driven catalytic degradation of BPA is a promising approach because of its utilization of solar energy. Bismuth oxychloride (BiOCl) is recognized as an efficient photocatalyst, but its band gap, >3.0 eV, makes it inefficient for solar energy utilization, especially for degrading nondye pollutants like BPA. Thus, preparation and application of bismuth oxychloride photocatalysts with an increased visible-light activity are essential. In this work, inspired by density functional theory calculations, a novel bismuth oxychloride photocatalyst, Bi12O15Cl6, was designed. The nanosheets were successfully synthesized using a facile solvothermal method followed by a thermal treatment route. The prepared Bi12O15Cl6 nanosheets had a favorable energy band structure and thus exhibited a superior visible-light photocatalytic activity for degrading BPA. The BPA degradation rate by the Bi12O15Cl6 was determined to be 13.6 and 8.7 times faster than those for BiOCl and TiO2 (P25), respectively. The photogenerated reactive species and degradation intermediates were identified, and the photocatalytic mechanism was elucidated. Furthermore, the as-synthesized Bi12O15Cl6 nanosheets remained stable in the photocatalytic process and could be used repeatedly, demonstrating their promising application in the degradation of diverse pollutants in water and wastewater.
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Affiliation(s)
- Chu-Ya Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China , Hefei 230026, China
| | - Xing Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China , Hefei 230026, China
| | - Xiang-Ning Song
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China , Hefei 230026, China
| | - Wei-Kang Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China , Hefei 230026, China
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China , Hefei 230026, China
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35
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Prakash N, Thangaraju D, Karthikeyan R, Arivanandhan M, Shimura Y, Hayakawa Y. UV-visible and near-infrared active NaGdF4:Yb:Er/Ag/TiO2 nanocomposite for enhanced photocatalytic applications. RSC Adv 2016. [DOI: 10.1039/c6ra10208e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A near infra-red (NIR) active NaGdF4:Yb:Er/Ag/TiO2 nanocomposite photocatalyst was successfully synthesized by a one-pot thermal decomposition method.
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Affiliation(s)
- Natarajan Prakash
- Graduate School of Science and Technology
- Shizuoka University
- Hamamatsu
- Japan
| | | | - Rajan Karthikeyan
- Graduate School of Science and Technology
- Shizuoka University
- Hamamatsu
- Japan
| | | | - Yosuke Shimura
- Research Institute of Electronics
- Shizuoka University
- Hamamatsu
- Japan
| | - Yasuhiro Hayakawa
- Graduate School of Science and Technology
- Shizuoka University
- Hamamatsu
- Japan
- Research Institute of Electronics
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36
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Oh J, Chang YH, Kim YH, Park S. Thickness-dependent photocatalytic performance of graphite oxide for degrading organic pollutants under visible light. Phys Chem Chem Phys 2016; 18:10882-6. [DOI: 10.1039/c6cp00582a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
This study reveals that photocatalytic activity of graphite oxide materials for degrading organic pollutants under visible light depends on their thickness.
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Affiliation(s)
- Junghoon Oh
- Department of Chemistry and Chemical Engineering
- Inha University
- Incheon
- Republic of Korea
| | - Yun Hee Chang
- Graduate School of Nanoscience and Technology
- KAIST
- Daejeon 305-701
- Republic of Korea
| | - Yong-Hyun Kim
- Graduate School of Nanoscience and Technology
- KAIST
- Daejeon 305-701
- Republic of Korea
| | - Sungjin Park
- Department of Chemistry and Chemical Engineering
- Inha University
- Incheon
- Republic of Korea
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37
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Xie J, Cao Y, Jia D, Qin H, Liang Z. Room-temperature solid-state synthesis of BiOCl hierarchical microspheres with nanoplates. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.05.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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38
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Sun L, Xiang L, Zhao X, Jia CJ, Yang J, Jin Z, Cheng X, Fan W. Enhanced Visible-Light Photocatalytic Activity of BiOI/BiOCl Heterojunctions: Key Role of Crystal Facet Combination. ACS Catal 2015. [DOI: 10.1021/cs501631n] [Citation(s) in RCA: 273] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Liming Sun
- Key Laboratory for Colloid and Interface Chemistry of
State Educating Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
- Department of Chemistry, School of Chemistry
and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, People’s Republic of China
| | - Li Xiang
- Key Laboratory for Colloid and Interface Chemistry of
State Educating Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
| | - Xian Zhao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
| | - Chun-Jiang Jia
- Key Laboratory for Colloid and Interface Chemistry of
State Educating Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
| | - Jun Yang
- State Key Laboratory of Multiphase Complex Systems, Institute
of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Zhao Jin
- Key Laboratory for Colloid and Interface Chemistry of
State Educating Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
| | - Xiufeng Cheng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
| | - Weiliu Fan
- Key Laboratory for Colloid and Interface Chemistry of
State Educating Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
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