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Yang F, Zhu L, Xu Z, Han Y, Lin X, Shi J, Sun Z, Duan X. Multi-active photocatalysts of biochar-doped g-C 3N 4 incorporated with polyoxometalates for the high-efficient degradation of sulfamethoxazole. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024:124715. [PMID: 39151784 DOI: 10.1016/j.envpol.2024.124715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 07/26/2024] [Accepted: 08/10/2024] [Indexed: 08/19/2024]
Abstract
Sulfamethoxazole (SMX) is one of major antibiotic contaminants in current aqueous environment. In this paper, waste loofah and melamine were co-carbonized to prepare biochar-doped g-C3N4 (CCN) by a one-pot method and then combined with Co2PMo11VO40 (CoPMoV) using a binder to obtain the novel polyoxometalates (POMs) photocatalytic composites (CCN/CoPMoV). The incorporation of CoPMoV dramatically reduced the photogenerated carrier recombination and led to a small band gap. Under visible light, the synergetic activation from biochar, g-C3N4 and POMs can remove 98.5% of SMX (k = 0.215 min-1) in the peroxymonosulfate (PMS) system within 20 min and keep its high stability with the degradation of 88.9% after five cycles. Multi-active sites from CCN/CoPMoV are contributed to develop the most active species of , ·OH, 1O2, and h+. The validity in the degradation of SMX makes CCN/CoPMoV a promising and potential material for the removal of aqueous pollutants in the future.
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Affiliation(s)
- Fang Yang
- Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin 132013, China
| | - Lihe Zhu
- Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin 132013, China
| | - Zushen Xu
- Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin 132013, China
| | - Yongwei Han
- Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin 132013, China
| | - Xue Lin
- Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin 132013, China
| | - Junyou Shi
- Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin 132013, China
| | - Zhong Sun
- School of Chemical Engineering, Northeast Electric Power University, 169 Changchun Road, Shipyard District, Jilin 132012, China
| | - Xixin Duan
- Key Laboratory of Wooden Materials Science and Engineering, Beihua University, 3999 East Binjiang Road, Fengman District, Jilin 132013, China.
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Mariappan A, Harikrishnan L, Eswaran J, Arumugham N, Balasubramaniam Y, Daniel S, Kanthapazham R. Green Synthesis of Metal-Doped ZnO Nanoparticles Using Bauhinia racemosa Lam. Extract and Evaluation of Their Photocatalysis and Biomedical Applications. ACS APPLIED BIO MATERIALS 2024; 7:2519-2532. [PMID: 38530961 DOI: 10.1021/acsabm.4c00132] [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] [Indexed: 03/28/2024]
Abstract
A fascinating problem in the fields of nanoscience and nanobiotechnology has recently emerged, and to tackle this, the production of metal oxide nanoparticles using plant extracts offers numerous benefits over traditional physicochemical methods. In the present investigation, ZnO nanoparticles were fabricated from Bauhinia racemosa Lam. (BR) leaves extract with various transition metal (TM) dopants (Ni, Mn, and Co). Plant leaves extract containing metal nitrate solutions were utilized as a precursor to synthesize the pristine and TM-doped ZnO nanoparticles. Structural, functional, optical, and surface properties of the fabricated samples were studied by using physicochemical and photoelectrochemical measurements. The organic pollutants tetracycline (TC), ampicillin (AMP), and amoxicillin (AMX) were used in the photocatalytic degradation assessment of the fabricated samples. Through X-ray diffraction (XRD) and transmission electron microscopy (TEM) investigation, the fabricated nanoparticles wurtzite crystal structure was verified. Moreover, Fourier transform infrared (FT-IR) analysis verified the existence of functional groups in the fabricated nanoparticles. The migration of electrons from the deep donor level and zinc interstitial to the Zn-defect and O-defect is related to the emission peaks seen at 468, 480, 534, and 450 nm in photoluminescence (PL) spectra. Co-ZnO nanoparticles demonstrated potent and excellent photocatalytic degradation performance for TC (91.09%), AMP (87.97%), and AMX (92.42%) antibiotics within 210, 180, and 150 min of visible light irradiation. Co-ZnO nanoparticles also demonstrated strong antimicrobial performance against Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Aspergillus flavus, Aspergillus niger, and Bacillus subtilis. Further investigation of in vitro cytotoxic potential against the A549 cell line (IC50 = 24 ± 0.5 μg/mL) utilizing MTT assay and the free radical scavenging performance of Co-ZnO nanoparticles estimated by DPPH assay utilizing l-ascorbic acid as a reference was also performed. Anti-inflammatory potential is also reviewed by comparing it with the standard drug Diclofenac, and the maximum activity was obtained for Ni-ZnO nanoparticles (IC50 = 72.4 μg/mL).
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Affiliation(s)
- Anusuya Mariappan
- Department of Chemistry, Kongunadu Arts and Science College, Coimbatore, Tamilnadu 641029, India
- Post Graduate Department of Chemistry, Nallamuthu Gounder Mahalingam College, Pollachi, Tamil Nadu 642001, India
| | - Leelavathi Harikrishnan
- Centre for Computational Modeling, Chennai Institute of Technology, Chennai, Tamilnadu 600069, India
| | - Jayanthi Eswaran
- Department of Chemistry, Kongunadu Arts and Science College, Coimbatore, Tamilnadu 641029, India
| | - Nagaveni Arumugham
- Department of Chemistry, Kongunadu Arts and Science College, Coimbatore, Tamilnadu 641029, India
- Department of Science and Humanities, JCT College of Engineering and Technology, Pichanur, Coimbatore, Tamil Nadu 641105, India
| | | | - Santhanaraj Daniel
- Department of Chemistry, Loyola College, Chennai, Tamilnadu 600034, India
| | - Rajakumar Kanthapazham
- Nanotechnology Research and Education Centre, South Ural State University, Chelyabinsk 454080, Russia
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Chandrapal RR, Bharathi K, Bakiyaraj G, Bharathkumar S, Priyajanani Y, Manivannan S, Archana J, Navaneethan M. Harnessing ZnCr 2O 4/g-C 3N 4 nanosheet heterojunction for enhanced photocatalytic degradation of rhodamine B and ciprofloxacin. CHEMOSPHERE 2024; 350:141094. [PMID: 38171401 DOI: 10.1016/j.chemosphere.2023.141094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/27/2023] [Accepted: 12/30/2023] [Indexed: 01/05/2024]
Abstract
Utilizing semiconductors for photocatalytic processes in water bodies as an approach to environmental remediation has gained considerable attention. Theoretical band position calculations revealed a type-II step-scheme charge flow mechanism for ZnCr2O4/g-C3N4 (ZCr/gCN), emphasizing effective heterojunction formation due to synergies between the materials. A composite of agglomerated nanoparticle ZnCr2O4 (Zinc chromium oxide - ZCr)/g-C3N4 (graphitic carbon nitride - gCN) nanosheets was synthesized using the ultrasonication and leveraging the heterojunction to enhance degradation efficiency and active sites participation. The synthesized sample was characterized by XRD, XPS, FTIR, BET, HRSEM, EDX, HRTEM, EIS PL, and UV-visible spectroscopy. XRD analysis confirmed the successful formation of pure ZnCr2O4, g-C3N4 (gCN), and their composite without any secondary phases. Optical investigations demonstrated a red shift (444-470 nm) in UV-visible spectra as ZnCr2O4 content increased. Morphological assessment via HRSEM unveiled agglomerated nanoparticle and nanosheet structures. FTIR analysis indicated the presence of gCN with the tri-s-triazine breathing mode at 807 cm-1, and the identification of octahedral Zn-O (598.11 cm-1) and tetrahedral Cr-O (447.01 cm-1) metal bonds within the spinel structure of ZnCr2O4. A Surface area of 134.162 m2/g was noticed with a microporous structure of pore radius 1.484 nm. Notably, the 15% ZCr/gCN composite achieved a remarkable 93.94 % (Rhodamine B-RhB) and 74.36 % (Ciprofloxacin - CIP) within 100 and 120 min, surpassing the performance of pure gCN. Improved degradation was attributed to higher charge separation (photo-excited electrons and holes), reducing charge recombination, as supported by photoluminescence and photoelectrochemical analyses. The presence of active species like superoxide during degradation was confirmed through a scavenger test. The stability analysis confirms the sample's stable nature (without secondary phase formation) after degradation. This work underscores the potential of ZnCr2O4 based metal-free compounds intended for effective environmental remediation.
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Affiliation(s)
- R Roshan Chandrapal
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, Tamil Nadu, India
| | - K Bharathi
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, Tamil Nadu, India
| | - G Bakiyaraj
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, Tamil Nadu, India.
| | - S Bharathkumar
- Department of Engineering Physics, College of Engineering, Koneru Lakshmaiah Education Foundation Vaddeswaram, Andhra Pradesh, India
| | - Y Priyajanani
- Carbon Nanomaterials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli, India
| | - S Manivannan
- Carbon Nanomaterials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli, India
| | - J Archana
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, Tamil Nadu, India
| | - M Navaneethan
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, Tamil Nadu, India; Nanotechnology Research Center, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, Tamil Nadu, India
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4
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Zu W, Jiang C, Liu W, Hou Q, Ji X. Fabrication of a Carbonized Cellulose Nanofibrils/Ti 3C 2T x MXene/g-C 3N 4 Heterojunction for Visible-Light-Driven Photocatalysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13109-13120. [PMID: 36264640 DOI: 10.1021/acs.langmuir.2c01818] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Photocatalytic degrading pollutants driven by visible-light irradiation has attracted tremendous attention. One strategy of preparing carbonized cellulose nanofibrils/Ti3C2Tx MXene/g-C3N4 (CMCN) as a photocatalyst was developed. The as-prepared CMCN was comprehensively characterized in terms of the chemical composition, chemical and crystal structure, morphology, and photoelectrochemical properties. The CMCN was explored as a photocatalyst and exhibited good photocatalytic performance in degrading MB (96.5%), RhB (95.4%), and TC (86.5%) under visible-light conditions. In addition, the CMCN as a photocatalyst exhibited good reusability and stability. It is found that the incorporation of cellulose nanofibrils provided a high carbon content, a high porosity, and a large specific surface area, enhanced the electron transfer, improved the photocatalytic performance, and ensured a semiconductor with a high stability. It is believed that this study would provide an effective approach to preparing a photocatalyst and broaden the potential application of cellulose nanofibrils in photocatalysis.
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Affiliation(s)
- Wenyue Zu
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin300457, China
| | - Chuang Jiang
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin300457, China
| | - Wei Liu
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin300457, China
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan250353, China
| | - Qingxi Hou
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin300457, China
| | - Xingxiang Ji
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan250353, China
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Chuaicham C, Sekar K, Balakumar V, Uchida J, Katsurao T, Sakabe H, Ohtani B, Sasaki K. Efficient photocatalytic degradation of emerging ciprofloxacin under visible light irradiation using BiOBr/carbon quantum dot/saponite composite. ENVIRONMENTAL RESEARCH 2022; 212:113635. [PMID: 35688220 DOI: 10.1016/j.envres.2022.113635] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/31/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
The use of visible-driven photocatalysts has fascinated attention as a capable and sustainable approach for wastewater remediation. In this work, BiOBr/carbon quantum dot (CQDs)/saponite composites (CQDs/Clay@BiOBr) were fabricated via hydrothermally using two different CQDs/Clay precursors (in-situ synthesis (IS) and physical mixing (PM)). The obtained products were characterized, and the photocatalytic performances of the prepared samples were evaluated in the photocatalytic decomposition of emerging ciprofloxacin (CIP) pharmaceutical waste. The highest CIP mineralization performance was achieved when a combination of BiOBr and CQDs/Clay (IS) with the appropriate proportion because the strong adhesion between CQDs and clay generate a great heterojunction in the composite. The stronger interaction of CQDs and better distribution of CQDs on the surface of clay in the CQDs/Clay (IS) enhanced the interaction of BiOBr and CQDs, and avoided the re-agglomeration of excess of CQDs on surface of BiOBr which reduce the active surface to receive the light and react with CIP. The ultrafast degradation rate of the optimized CQDs/Clay@BiOBr composite was better compared to others. The significant improvement in the CIP degradation efficiency of the CQDs/Clay@BiOBr composite was attributed to the excellent separation and transportation of photogenerated electrons and holes, as confirmed by photoluminescence, photocurrent density, and electrochemical impedance spectroscopy results. Moreover, the photocatalytic degradation mechanism of CIP in the CQDs/Clay@BiOBr composite was proposed based on the electronic states of each material in the composite and on a scavenger test. Thus, the proposed CQDs/Clay@BiOBr composite can be employed as a potential visible-light-driven photocatalyst for the decomposition of organic contaminants in wastewater.
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Affiliation(s)
- Chitiphon Chuaicham
- Department of Earth Resources Engineering, Kyushu University, Fukuoka, 819-0395, Japan.
| | - Karthikeyan Sekar
- Department of Earth Resources Engineering, Kyushu University, Fukuoka, 819-0395, Japan; Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | - Vellaichamy Balakumar
- Department of Earth Resources Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - Junya Uchida
- Kureha Corporation, Iwaki, Fukushima, 974-8686, Japan
| | | | | | - Bunsho Ohtani
- Institute for Catalysis, Hokkaido University, Sapporo, 001-0021, Japan
| | - Keiko Sasaki
- Department of Earth Resources Engineering, Kyushu University, Fukuoka, 819-0395, Japan; Institute for Catalysis, Hokkaido University, Sapporo, 001-0021, Japan.
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6
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Lin J, Tian W, Zhang H, Duan X, Sun H, Wang H, Fang Y, Huang Y, Wang S. Carbon nitride-based Z-scheme heterojunctions for solar-driven advanced oxidation processes. JOURNAL OF HAZARDOUS MATERIALS 2022; 434:128866. [PMID: 35413519 DOI: 10.1016/j.jhazmat.2022.128866] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/25/2022] [Accepted: 04/02/2022] [Indexed: 06/14/2023]
Abstract
Solar-driven advanced oxidation processes (AOPs) via direct photodegradation or indirect photocatalytic activation of typical oxidants, such as hydrogen peroxide (H2O2), peroxymonosulfate (PMS), and peroxydisulfate (PDS), have been deemed to be an efficient technology for wastewater remediation. Artificial Z-scheme structured materials represent a promising class of photocatalysts due to their spatially separated charge carriers and strong redox abilities. Herein, we summarize the development of metal-free graphitic carbon nitride (g-C3N4, CN)-based direct and indirect Z-scheme photocatalysts for solar-driven AOPs in removing organic pollutants from water. In the work, the classification of AOPs, definition and validation of Z-schemes are summarized firstly. The innovative engineering strategies (e.g., morphology and dimensionality control, element doping, defect engineering, cocatalyst loading, and tandem Z-scheme construction) over CN-based direct Z-scheme structure are then examined. Rational design of indirect CN-based Z-scheme systems using different charge mediators, such as solid conductive materials and soluble ion pairs, is further discussed. Through examining the relationship between the Z-scheme structure and activity (charge transfer and separation, light absorption, and reaction kinetics), we aim to provide more insights into the construction strategies and structure modification on CN-based Z-schemes towards improving their catalytic performances in AOPs. Lastly, limitations, challenges, and perspectives on future development in this emerging field are proposed.
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Affiliation(s)
- Jingkai Lin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia
| | - Wenjie Tian
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia
| | - Huayang Zhang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia.
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia
| | - Hongqi Sun
- School of Science, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia
| | - Hao Wang
- Center for Future Materials, University of Southern Queensland, Toowoomba 4350, Australia
| | - Yanfen Fang
- College of Biological and Pharmaceutical Sciences, Three Gorges University, Hubei 443002, China
| | - Yingping Huang
- College of Biological and Pharmaceutical Sciences, Three Gorges University, Hubei 443002, China
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia.
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Kokilavani S, Syed A, Elgorban AM, Bahkali AH, Al-Shwaiman HA, Varma RS, Das A, Khan SS. Designing Z-scheme AgIO 4 nanorod embedded with Bi 2S 3 nanoflakes for expeditious visible light photodegradation of congo red and rhodamine B. CHEMOSPHERE 2022; 294:133755. [PMID: 35090849 DOI: 10.1016/j.chemosphere.2022.133755] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/11/2022] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
The present study describes the enhanced photodegradation of organic pollutant dyes, congo red (CR) and rhodamine B (RhB) dyes under visible light irradiation. AgIO4 nanorods decorated on Bi2S3 nanoflakes in various proportions were synthesized via sono-chemical route wherein the deposition of varying amounts of AgIO4 on Bi2S3 plays a pivotal role in improving the photodegradation ability. The characterization of the as-synthesized nanohybrids was assessed by XRD, UV-vis DRS, PL, EIS, ESR, FT-IR, XPS, HR-TEM, FE-SEM, N2 adsorption and desorption techniques. The effect of initial CR and RhB dye concentration, reaction pH and usage of nanohybrid concentration were investigated where 30%-AgIO4/Bi2S3 exhibited excellent visible light photodegradation of 95.58% for CR and 96.11% for RhB dyes at 140 min and 100 min respectively. The superoxide (•O2-) and hydroxyl radicals (•OH) played predominant role in the photodegradation of CR and RhB which is experimentally confirmed by radical trapping experiments. Also, the photocatalysts exhibited good photo stability and excellent reusability. The TOC analysis confirmed the complete mineralization of CR and RhB dyes by the nanohybrid and the formation of possible intermediate and degradation pathway was delineated based on GC/MS analysis. The outstanding photodegradation performance were ascribed to the Z-scheme charge transfer path, which effectively promotes the separation and transfer of e-/h+ pairs, resulting in a strong redox activity of the accumulated charge to decompose organic dyes during the degradation reaction. The study suggested that the nanohybrid can be utilized for the removal of organic pollutants from the contaminated water bodies.
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Affiliation(s)
- S Kokilavani
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Asad Syed
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Abdallah M Elgorban
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Ali H Bahkali
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Hind A Al-Shwaiman
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Rajender S Varma
- Regional Center of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University in Olomouc, Slechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Arunava Das
- Faculty of Life Sciences, Mandsaur University, SH-31, Mhow - Neemuch By-pass Square, Rewas-Dewda Road, Mandsaur, Madhya Pradesh, India
| | - S Sudheer Khan
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India.
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Li Y, Zhang MQ, Liu YF, Sun YX, Zhao QH, Chen TL, Chen YF, Wang SF. In Situ Construction of Bronze/Anatase TiO 2 Homogeneous Heterojunctions and Their Photocatalytic Performances. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1122. [PMID: 35407240 PMCID: PMC9000825 DOI: 10.3390/nano12071122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/24/2022] [Accepted: 03/24/2022] [Indexed: 02/04/2023]
Abstract
Photocatalytic degradation is one of the most promising emerging technologies for environmental pollution control. However, the preparation of efficient, low-cost photocatalysts still faces many challenges. TiO2 is a widely available and inexpensive photocatalyst material, but improving its catalytic degradation performance has posed a significant challenge due to its shortcomings, such as the easy recombination of its photogenerated electron-hole pairs and its difficulty in absorbing visible light. The construction of homogeneous heterojunctions is an effective means to enhance the photocatalytic performances of photocatalysts. In this study, a TiO2(B)/TiO2(A) homogeneous heterojunction composite photocatalyst (with B and A denoting bronze and anatase phases, respectively) was successfully constructed in situ. Although the construction of homogeneous heterojunctions did not improve the light absorption performance of the material, its photocatalytic degradation performance was substantially enhanced. This was due to the suppression of the recombination of photogenerated electron-hole pairs and the enhancement of the carrier mobility. The photocatalytic ability of the TiO2(B)/TiO2(A) homogeneous heterojunction composite photocatalyst was up to three times higher than that of raw TiO2 (pure anatase TiO2).
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Affiliation(s)
- Yong Li
- Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, China; (Y.L.); (M.-Q.Z.); (Y.-F.L.); (Y.-X.S.); (Q.-H.Z.)
- Institute of Oxygen Supply, Center of Tibetan Studies (Everest Research Institute), Tibet University, Lhasa 850000, China
- Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Lhasa 850000, China
| | - Ming-Qing Zhang
- Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, China; (Y.L.); (M.-Q.Z.); (Y.-F.L.); (Y.-X.S.); (Q.-H.Z.)
- Institute of Oxygen Supply, Center of Tibetan Studies (Everest Research Institute), Tibet University, Lhasa 850000, China
| | - Yan-Fang Liu
- Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, China; (Y.L.); (M.-Q.Z.); (Y.-F.L.); (Y.-X.S.); (Q.-H.Z.)
- Institute of Oxygen Supply, Center of Tibetan Studies (Everest Research Institute), Tibet University, Lhasa 850000, China
| | - Ya-Xun Sun
- Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, China; (Y.L.); (M.-Q.Z.); (Y.-F.L.); (Y.-X.S.); (Q.-H.Z.)
- Institute of Oxygen Supply, Center of Tibetan Studies (Everest Research Institute), Tibet University, Lhasa 850000, China
| | - Qing-Hua Zhao
- Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, China; (Y.L.); (M.-Q.Z.); (Y.-F.L.); (Y.-X.S.); (Q.-H.Z.)
- Institute of Oxygen Supply, Center of Tibetan Studies (Everest Research Institute), Tibet University, Lhasa 850000, China
| | - Tian-Lu Chen
- Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Lhasa 850000, China
| | - Yuan-Fu Chen
- School of Electronic Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Shi-Feng Wang
- Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, China; (Y.L.); (M.-Q.Z.); (Y.-F.L.); (Y.-X.S.); (Q.-H.Z.)
- Institute of Oxygen Supply, Center of Tibetan Studies (Everest Research Institute), Tibet University, Lhasa 850000, China
- Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Lhasa 850000, China
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9
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Ge F, Li X, Wu M, Ding H, Li X. A type II heterojunction α-Fe 2O 3/g-C 3N 4 for the heterogeneous photo-Fenton degradation of phenol. RSC Adv 2022; 12:8300-8309. [PMID: 35424783 PMCID: PMC8984958 DOI: 10.1039/d1ra09282k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/18/2022] [Indexed: 12/30/2022] Open
Abstract
The heterogeneous photo-Fenton reaction is an effective method of chemical oxidation to remove phenol in wastewater with environmental friendliness and sustainability. Herein, the composite α-Fe2O3/g-C3N4, as a catalyst of the heterogeneous photo-Fenton reaction, has been synthesized by hydrothermal-calcination method using the abundant and low-cost FeCl3·6H2O and g-C3N4 as raw materials. The influence of the annealing temperature during calcination was also investigated. The UV-Vis diffuse reflectance spectra of samples show that the composite α-Fe2O3/g-C3N4 possesses the widest light response range. Furthermore, the transient photocurrent response curves demonstrated the strongest intensity of α-Fe2O3/g-C3N4. The annealed α-Fe2O3/g-C3N4 is indicative of the highest degradation efficiency in all samples due to the improvement of the charge transfer ability caused by the tight heterojunction structure. The results of the scavenger trapping experiments show that the hydroxyl radical was the main active species in degradation. Based on experimental results, a type II heterojunction should be built in the composite α-Fe2O3/g-C3N4, driving the photoelectrons transfer and migration by internal electronic field. This work provides a facile and new method to synthesize α-Fe2O3/g-C3N4 as an effective heterogeneous photo-Fenton catalyst for environmental remediation. Composite α-Fe2O3/g-C3N4 with type II heterojunction to degrade phenol by heterogeneous photo-Fenton reaction.![]()
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Affiliation(s)
- Fuxiang Ge
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology Xuzhou 221000 Jiangsu China .,Kaifeng Ecological and Environmental Monitoring Center Henan Province China
| | - Xuehua Li
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology Xuzhou 221000 Jiangsu China
| | - Mian Wu
- School of Chemical Engineering &Technology, China University of Mining and Technology Xuzhou Jiangsu China
| | - Hui Ding
- School of Chemical Engineering &Technology, China University of Mining and Technology Xuzhou Jiangsu China
| | - Xiaobing Li
- National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology Xuzhou 221000 Jiangsu China
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10
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Viswanathan VP, Nayarassery AN, Xavier MM, Mathew S. A 2D/1D heterojunction nanocomposite built from polymeric carbon nitride and MIL-88A(Fe) derived α-Fe 2O 3 for enhanced photocatalytic degradation of rhodamine B. NEW J CHEM 2022. [DOI: 10.1039/d1nj05439b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2D/1D heterojunction α-Fe2O3/C3N4 photocatalysts containing α-Fe2O3 microrods and polymeric carbon nitride flakes are synthesised through the calcination of Fe-based metal-organic frameworks and boost the visible light photocatalytic degradation of rhodamine B.
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Affiliation(s)
| | - Adarsh N. Nayarassery
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York, 13699, USA
| | - Marilyn Mary Xavier
- Department of Chemistry, Morning Star Home Science College, Angamaly South, 683573, Kerala, India
| | - Suresh Mathew
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam, 686560, Kerala, India
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University, Kottayam, 686560, Kerala, India
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11
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Zheng Y, Zhou H, Zhou B, Mao J, Zhao Y. Photocatalytic production of H2O2 over facet-dependent Ti-MOF. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02166d] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Z-scheme structure between Ti-MOF (001) and (111) facets for photocatalytic H2O2 production.
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Affiliation(s)
- Yuanzhou Zheng
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Jiangsu, China
| | - Hualan Zhou
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Jiangsu, China
| | - Bosen Zhou
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Jiangsu, China
| | - Jingchen Mao
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Jiangsu, China
| | - Yinghao Zhao
- School of Environmental and Chemical Engineering, Jiangsu Ocean University, Jiangsu, China
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12
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Das S, Chowdhury A. Recent advancements of g-C 3N 4-based magnetic photocatalysts towards the degradation of organic pollutants: a review. NANOTECHNOLOGY 2021; 33:072004. [PMID: 34731840 DOI: 10.1088/1361-6528/ac3614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
Heterogeneous photocatalysis premised on advanced oxidation processes has witnessed a broad application perspective, including water purification and environmental remediation. In particular, the graphitic carbon nitride (g-C3N4), an earth-abundant metal-free conjugated polymer, has acquired extensive application scope and interdisciplinary consideration owing to its outstanding structural and physicochemical properties. However, several issues such as the high recombination rate of the photo-generated electron-hole pairs, smaller specific surface area, and lower electrical conductivity curtail the catalytic efficacy of bulk g-C3N4. Another challenging task is separating the catalyst from the reaction medium, limiting their reusability and practical applications. Therefore, several methodologies are adopted strategically to tackle these issues. Attention is being paid, especially to the magnetic nanocomposites (NCs) based catalysts to enhance efficiency and proficient reusability property. This review summarizes the latest progress related to the design and development of magnetic g-C3N4-based NCs and their utilization in photocatalytic systems. The usefulness of the semiconductor heterojunctions on the catalytic activity, working mechanism, and degradation of pollutants are discussed in detail. The major challenges and prospects of using magnetic g-C3N4-based NCs for photocatalytic applications are highlighted in this report.
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Affiliation(s)
- Suma Das
- Organic Electronics & Sensor Laboratory, Department of Physics, National Institute of Technology Silchar, Assam 788010, India
| | - Avijit Chowdhury
- Organic Electronics & Sensor Laboratory, Department of Physics, National Institute of Technology Silchar, Assam 788010, India
- Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700106, India
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13
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Qingbo Y, Yang K, Li H, Li X. Z-scheme α-Fe2O3/g-C3N4 with the Fe OC bond toward enhanced photocatalytic degradation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126269] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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14
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Karpuraranjith M, Chen Y, Ramadoss M, Wang B, Yang H, Rajaboopathi S, Yang D. Magnetically recyclable magnetic biochar graphitic carbon nitride nanoarchitectures for highly efficient charge separation and stable photocatalytic activity under visible-light irradiation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115315] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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15
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Activated Mont K10-Carbon supported Fe2O3: A versatile catalyst for hydration of nitriles to amides and reduction of nitro compounds to amines in aqueous media. J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01888-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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16
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Wang M, Li D, Zhao Y, Shen H, Chen B, Wu X, Qiao X, Shi W. Bifunctional black phosphorus: coupling with hematite for Z-scheme photocatalytic overall water splitting. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01743d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Z-scheme 2D–2D BP/α-Fe2O3 heterostructure enables preferable photocatalytic properties for efficient overall water splitting under visible light.
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Affiliation(s)
- Ming Wang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Di Li
- Institute for Energy Research
- Jiangsu University
- Zhenjiang 212013
- China
| | - Yong Zhao
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Hao Shen
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Biyi Chen
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Xiaojie Wu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Xiaolei Qiao
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
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17
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Shao H, Yao P, Chen Y, Yao Y, Li G, Liao X. Ball-milling method encapsulated α-Fe 2O 3 into g-C 3N 4 as efficient and stable photo-catalysts. NEW J CHEM 2021. [DOI: 10.1039/d1nj02965g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Ball-milling method encapsulated α-Fe2O3 into g-C3N4 as efficient and stable photo-catalysts.
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Affiliation(s)
- Huijuan Shao
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China
| | - Peng Yao
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China
| | - Yi Chen
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China
| | - Yue Yao
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China
| | - Guangbi Li
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China
| | - Xiaoyuan Liao
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China
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18
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Enhancement of organic contaminants degradation at low dosages of Fe(III) and H2O2 in g-C3N4 promoted Fe(III)/H2O2 system under visible light irradiation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117333] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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19
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Wang B, Liu X, Dai S, Lu H. α−Fe
2
O
3
Nanoparticles/Porous g−C
3
N
4
Hybrids Synthesized by Calcinations of Fe‐based MOF/Melamine Mixtures for Boosting Visible‐Light Photocatalytic Tetracycline Degradation. ChemistrySelect 2020. [DOI: 10.1002/slct.201904388] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Baogang Wang
- College of Chemistry and Chemical EngineeringSouthwest Petroleum University Chengdu 610500 P. R. China
| | - Xing Liu
- College of Chemistry and Chemical EngineeringSouthwest Petroleum University Chengdu 610500 P. R. China
| | - Shanshan Dai
- College of Chemistry and Chemical EngineeringSouthwest Petroleum University Chengdu 610500 P. R. China
| | - Hongsheng Lu
- College of Chemistry and Chemical EngineeringSouthwest Petroleum University Chengdu 610500 P. R. China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province Chengdu 610500 P. R. China
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20
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Kim C, Cho KM, Park K, Kim KH, Gereige I, Jung H. Ternary Hybrid Aerogels of g‐C
3
N
4
/α‐Fe
2
O
3
on a 3D Graphene Network: An Efficient and Recyclable Z‐Scheme Photocatalyst. Chempluschem 2020. [DOI: 10.1002/cplu.201900688] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chansol Kim
- Department of Chemical & Biomolecular Engineering (BK-21 plus) Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
- KAIST Institute for Nanocentury 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Kyeong Min Cho
- Department of Chemical & Biomolecular Engineering (BK-21 plus) Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
- KAIST Institute for Nanocentury 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Kangho Park
- Department of Chemical & Biomolecular Engineering (BK-21 plus) Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
- KAIST Institute for Nanocentury 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Kyoung Hwan Kim
- Department of Chemical & Biomolecular Engineering (BK-21 plus) Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Issam Gereige
- Saudi Aramco Research and Development Center Dhahran 31311 Saudi Arabia
| | - Hee‐Tae Jung
- Department of Chemical & Biomolecular Engineering (BK-21 plus) Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
- KAIST Institute for Nanocentury 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
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21
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Xi J, Xia H, Ning X, Zhang Z, Liu J, Mu Z, Zhang S, Du P, Lu X. Carbon-Intercalated 0D/2D Hybrid of Hematite Quantum Dots/Graphitic Carbon Nitride Nanosheets as Superior Catalyst for Advanced Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1902744. [PMID: 31532897 DOI: 10.1002/smll.201902744] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 09/02/2019] [Indexed: 06/10/2023]
Abstract
Efficient charge separation and sufficiently exposed active sites are important for light-driving Fenton catalysts. 0D/2D hybrids, especially quantum dots (QDs)/nanosheets (NSs), offer a better opportunity for improving photo-Fenton activity due to their high charge mobility and more catalytic sites, which is highly desirable but remains a great challenge. Herein, a 0D hematite quantum dots/2D ultrathin g-C3 N4 nanosheets hybrid (Fe2 O3 QDs/g-C3 N4 NS) is developed via a facile chemical reaction and subsequent low-temperature calcination. As expected, the specially designed 0D/2D structure shows remarkable catalytic performance toward the removal of p-nitrophenol. By virtue of large surface area, adequate active sites, and strong interfacial coupling, the 0D Fe2 O3 QDs/2D g-C3 N4 nanosheets establish efficient charge transport paths by local in-plane carbon species, expediting the separation and transfer of electron/hole pairs. Simultaneously, highly efficient charge mobility can lead to continuous and fast Fe(III)/Fe(II) conversion, promoting a cooperative effect between the photocatalysis and chemical activation of H2 O2 . The developed carbon-intercalated 0D/2D hybrid provides a new insight in developing heterogeneous catalysis for a large variety of photoelectronic applications, not limited in photo-Fenton catalysis.
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Affiliation(s)
- Junhua Xi
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Hong Xia
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Xingming Ning
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Zhen Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Jia Liu
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Zijie Mu
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Shouting Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Peiyao Du
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
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22
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Shanmugam V, Sanjeevamuthu S, Jeyaperumal KS, Vairamuthu R. Fabrication of heterostructured vanadium modified g-C3N4/TiO2 hybrid photocatalyst for improved photocatalytic performance under visible light exposure and antibacterial activities. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.03.056] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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23
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Zhou X, Li Y, Xing Y, Li J, Jiang X. Effects of the preparation method of Pt/g-C3N4 photocatalysts on their efficiency for visible-light hydrogen production. Dalton Trans 2019; 48:15068-15073. [DOI: 10.1039/c9dt02938a] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pt NPs have been loaded on ultrathin porous g-C3N4 nanosheets (CNS) by either a chemical reduction (CR) or a photoreduction (PR) method. The Pt/CNS-CR photocatalyst shows a much higher efficiency for H2 evolution than that of the Pt/CNS-PR.
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Affiliation(s)
- Xuanbo Zhou
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Yunfeng Li
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Yan Xing
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Junsong Li
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Xin Jiang
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
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24
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Lei J, Chen B, Lv W, Zhou L, Wang L, Liu Y, Zhang J. An inverse opal TiO2/g-C3N4 composite with a heterojunction for enhanced visible light-driven photocatalytic activity. Dalton Trans 2019; 48:3486-3495. [DOI: 10.1039/c8dt04496a] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An inverse opal TiO2/g-C3N4 composite with excellent photogenerated electron–hole separation efficiency and enhanced visible light absorption efficiency was constructed.
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Affiliation(s)
- Juying Lei
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Bin Chen
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Weijia Lv
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Liang Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Lingzhi Wang
- Key Lab for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yongdi Liu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Jinlong Zhang
- Key Lab for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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25
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Liao A, Zhou Y, Xiao L, Zhang C, Wu C, Asiri AM, Xiao M, Zou Z. Direct Z scheme-fashioned photoanode systems consisting of Fe 2O 3 nanorod arrays and underlying thin Sb 2Se 3 layers toward enhanced photoelectrochemical water splitting performance. NANOSCALE 2018; 11:109-114. [PMID: 30534720 DOI: 10.1039/c8nr08292h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
An elegant Z-scheme-fashioned photoanode consisting of Fe2O3 nanorod arrays and underlying thin Sb2Se3 layers was rationally constructed. The photocurrent density of the Sb2Se3-Fe2O3 Z-scheme photoanode reached 3.07 mA cm-2 at 1.23 V vs. RHE, three times higher than that of pristine Fe2O3 at 1.03 mA cm-2. An obvious cathodic shift of the photocurrent onset potential of about 200 mV was also observed. The transient photovoltage response demonstrates that the suitable band edges (ECB ∼ -0.4 eV and EVB ∼ 0.8 eV) of Sb2Se3, match well with Fe2O3 (ECB ∼ 0.29 eV and EVB ∼ 2.65 eV), permitting the photoexcited electrons on the conduction band of the Fe2O3 to transfer to the valence band of Sb2Se3, and recombine with the holes therein, thus allowing a high concentration of holes to collect in the Fe2O3 for water oxidation. The transient absorption spectra further corroborate that the built-in electric field in the p-n heterojunction leads to a more effective separation and a longer lifetime of the charge carriers.
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Affiliation(s)
- Aizhen Liao
- Eco-Materials and Renewable Energy Research Center (ERERC), Jiangsu Key Laboratory for Nano Technology, Nanjing University, Nanjing 210093, China.
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