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Wang W, Zhang M, Li X, Zhang S, Yu F, Li S, Comini E, Wang ZL, Ren K. Boosting Efficiency in Piezo-Photocatalysis Process Using Poled Ba 0.7Sr 0.3TiO 3 Nanorod Arrays for Pollutant Degradation and Hydrogen Production. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38621199 DOI: 10.1021/acsami.4c01287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Recently, the combination of the piezoelectric effect in the photocatalytic process, referred to as piezo-photocatalysis, has gained considerable attention as a promising approach for enhancing the degradation of organic pollutants. In this investigation, we studied the piezo-photocatalysis by fabricating arrays of barium strontium titanate (Ba0.7Sr0.3TiO3) nanorods (BST NRs) on a glass substrate as recoverable catalysts. We found that the degradation rate constant k of the rhodamine B solution achieved 0.0447 min-1 using poled BST NRs in the piezo-photocatalytic process, indicating a 2-fold increase in efficiency compared to the photocatalytic process (0.00183 min-1) utilizing the same material. This is mainly ascribed to the generation of the piezopotential in the poled BST NRs under ultrasonic vibration. Moreover, the BST NR array demonstrated a hydrogen (H2) production rate of 411.5 μmol g-1 h-1. In the photoelectrochemical process, the photocurrent density of poled BST NRs achieved 1.97 mA cm-2 at an applied potential of 1.23 V (ERHE (reversible hydrogen electrode)) under ultrasonic vibrations, representing a 1.7-fold increase compared with the poled BST NRs without ultrasonic vibrations. The measurement results from the liquid chromatograph mass spectrometer (LC-MS) demonstrated the formulation of a degradation pathway for rhodamine B molecules. Moreover, ab initio molecular dynamics (AIMD) simulation results demonstrate the dominance of hydroxyl radicals (•OH) rather than superoxide radicals (•O2-) in the degradation process. This study not only benefits the understanding of the principle of the piezo-photocatalytic process but also provides a new perspective for improving the catalytic efficiency for organic pollutants degradation.
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Affiliation(s)
- Weidong Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, P. R. China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 101400, P. R. China
| | - Mingzheng Zhang
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen 518055, P. R. China
| | - Xiaofen Li
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Shengwei Zhang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, P. R. China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 101400, P. R. China
| | - Fang Yu
- Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, Guangxi, P. R. China
| | - Shunning Li
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen 518055, P. R. China
| | - Elisabetta Comini
- Department of Information Engineering, University of Brescia, Brescia 25123, Italy
| | - Zhong Lin Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, P. R. China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 101400, P. R. China
| | - Kailiang Ren
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, P. R. China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 101400, P. R. China
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2
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Yi H, Ma D, Huo X, Li L, Zhang M, Zhou X, Xu F, Yan H, Zeng G, Lai C. Facile introduction of coordinative Fe into oxygen-enriched graphite carbon nitride for efficient photo-Fenton degradation of tetracycline. J Colloid Interface Sci 2024; 660:692-702. [PMID: 38271805 DOI: 10.1016/j.jcis.2024.01.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/15/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024]
Abstract
Tetracycline (TC) antibiotics have been widely used over the past decades, and their massive discharge led to serious water pollution. Photo-Fenton process has gained ever-increasing attention for its excellent oxidizing ability and friendly solar energy utilization ability in TC polluted water treatment. This work introduced coordinative Fe into oxygen-enriched graphite carbon nitride (OCN) to form FeOCN composites for efficient photo-Fenton process. Hemin was chosen as the source to provide the source of coordinative Fe-Nx groups. The degradation efficiency of TC reached 82.1 % within 40 min of irradiation, and remained 76.9 % after five runs of reaction. The degradation intermediates of TC were detected and the possible degradation pathways were gained. It was found that h+, OH, and O2- played major roles in TC degradation. Notably, the photo-Fenton performance of FeOCN was stable in highly saline water or strong acid/base environment (pH 3.0-9.0). Besides, H2O2 can be generated in-situ in this photo-Fenton process, which is favorable for practical application. It can be anticipated that the coordinative FeOCN composites will promote the application of photo-Fenton oxidation process in TC polluted water treatment.
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Affiliation(s)
- Huan Yi
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Dengsheng Ma
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Xiuqin Huo
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Ling Li
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Mingming Zhang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Xuerong Zhou
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Fuhang Xu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Huchuan Yan
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
| | - Cui Lai
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
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Samarasinghe LV, Muthukumaran S, Baskaran K. Recent advances in visible light-activated photocatalysts for degradation of dyes: A comprehensive review. CHEMOSPHERE 2024; 349:140818. [PMID: 38056717 DOI: 10.1016/j.chemosphere.2023.140818] [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: 08/24/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 12/08/2023]
Abstract
The rapid development in industrialization and urbanization coupled with an ever-increasing world population has caused a tremendous increase in contamination of water resources globally. Synthetic dyes have emerged as a major contributor to environmental pollution due to their release in large quantities into the environment, especially owing to their high demand in textile, cosmetics, clothing, food, paper, rubber, printing, and plastic industries. Photocatalytic treatment technology has gained immense research attention for dye contaminated wastewater treatment due to its environment-friendliness, ability to completely degrade dye molecules using light irradiation, high efficiency, and no generation of secondary waste. Photocatalytic technology is evolving rapidly, and the foremost goal is to synthesize highly efficient photocatalysts with solar energy harvesting abilities. The current review provides a comprehensive overview of the most recent advances in highly efficient visible light-activated photocatalysts for dye degradation, including methods of synthesis, strategies for improving photocatalytic activity, regeneration and their performance in real industrial effluent. The influence of various operational parameters on photocatalytic activity are critically evaluated in this article. Finally, this review briefly discusses the current challenges and prospects of visible-light driven photocatalysts. This review serves as a convenient and comprehensive resource for comparing and studying the fundamentals and recent advancements in visible light photocatalysts and will facilitate further research in this direction.
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Affiliation(s)
| | - Shobha Muthukumaran
- Institute for Sustainability Industries and Liveable Cities, College of Sport, Health & Engineering, Victoria University, Melbourne, VIC, 8001, Australia
| | - Kanagaratnam Baskaran
- Faculty of Science, Engineering and Built Environment, Deakin University, Victoria, 3216, Australia
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Rawal J, Lee SY, Park SJ. Facile synthesis of a GO-g-C 3N 4/BaTiO 3 ternary nanocomposites for visible-light-driven photocatalytic degradation of rhodamine B. CHEMOSPHERE 2023; 345:140479. [PMID: 37863208 DOI: 10.1016/j.chemosphere.2023.140479] [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: 07/02/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 10/22/2023]
Abstract
Photogenerated charge carriers can undergo rapid recombination in conventional photocatalyst systems, reducing their photocatalytic efficiency. To address this bottleneck, a g-C3N4/BaTiO3 (CNB) heterojunction composite was decorated with different mass ratios of graphene oxide (GO) to form a novel visible-light responsive ternary GO-g-C3N4/BaTiO3 (GOCNB) nanocomposite using a facile fabrication method. The GOCNB photocatalyst exhibited significantly higher light absorption and greater charge transfer than CNB, g-C3N4, or BaTiO3. The photodegradation performance of GOCNB was optimized with a 2% mass loading of GO, and it achieved a degradation rate constant of 14.9 × 10-3 min-1 for rhodamine B with an efficiency of 94% within 180 min. The rate constant was 8-fold and 6-fold higher than that of bare BaTiO3 and CNB, respectively. The stronger photocatalytic activity was attributed to the synergistic effect of GO, g-C3N4, and BaTiO3, with g-C3N4 and BaTiO3 promoting charge transfer within a wider visible light range and GO promoting electron mobility and the photocatalyst's adsorption capacity. In particular, the proposed system maintained the spatial separation of photogenerated electron-hole pairs, which is vital for high photocatalytic activity. This study provides new insights into semiconductor-based photocatalytic systems and suggests a route for more environmentally sustainable technologies.
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Affiliation(s)
- Jishu Rawal
- Department of Chemistry, Inha University, 100 Inharo, Incheon, 22212, South Korea.
| | - Seul-Yi Lee
- Department of Chemistry, Inha University, 100 Inharo, Incheon, 22212, South Korea.
| | - Soo-Jin Park
- Department of Chemistry, Inha University, 100 Inharo, Incheon, 22212, South Korea.
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Mergbi M, Aboagye D, Contreras S, Amor HB, Medina F, Djellabi R. Fast g-C 3N 4 sonocoated activated carbon for enhanced solar photocatalytic oxidation of organic pollutants through Adsorb & Shuttle process. ULTRASONICS SONOCHEMISTRY 2023; 99:106550. [PMID: 37562345 PMCID: PMC10433234 DOI: 10.1016/j.ultsonch.2023.106550] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/12/2023]
Abstract
To solve low mass transfer in photocatalytic technology for water treatment, the combination of photoactive nanoparticles with highly adsorptive materials has been regarded as a successful approach. The optimization of photoactive particle coating in terms of dispersion on the surface of adsorbing support is the main key to reach a maximum synergism for pollutants removal. This study discusses the coating of as-prepared biomass based activated carbon by g-C3N4 using three routes, namely ball milling (AC-CN@BM), physical stirring (AC-CN@Phy) and ultrasonic assisted coating (AC-CN@US). The coating mechanisms by different processes were discussed using different characterization techniques. Ball milling based coating provides good g-C3N4 dispersion on the surface of AC, however, a partial degradation of g-C3N4 structure and a lower surface area were confirmed by FTIR, XRD and BET analysis. Physically designed sample shows a significant agglomeration of particles on the surface of AC. However, ultrasonic coating provides excellent distribution of g-C3N4 and high surface of the composite. In terms of photoactivity, AC-CN@BM exhibits the lowest adsorption and photocatalytic activity under solar light for the removal of ciprofloxacin. AC-CN@Phy showed medium performance, but less physical stability of g-C3N4 particles on AC, leading to their partial release. AC-CN@US showed the highest efficiency and stability after using; suggesting the good combination between g-C3N4 and AC, which in turn maximizes the removal of ciprofloxacin via Adsorb & shuttle process. The overall costs of composite, including the starting elements and the coating ultrasonic process are relatively low and green as compared to commonly reported routes.
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Affiliation(s)
- Meriem Mergbi
- Faculty of Sciences of Gabes, RL Processes, Energetic, Environment and Electric Systems (PEESE), University of Gabes, 6072 Gabes, Tunisia
| | - Dominic Aboagye
- Department of Chemical Engineering, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Sandra Contreras
- Department of Chemical Engineering, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Hedi Ben Amor
- Faculty of Sciences of Gabes, RL Processes, Energetic, Environment and Electric Systems (PEESE), University of Gabes, 6072 Gabes, Tunisia
| | - Francisco Medina
- Department of Chemical Engineering, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Ridha Djellabi
- Department of Chemical Engineering, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
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Masekela D, Hintsho-Mbita NC, Sam S, Yusuf TL, Mabuba N. Application of BaTiO3-based catalysts for piezocatalytic, photocatalytic and piezo-photocatalytic degradation of organic pollutants and bacterial disinfection in wastewater: A comprehensive review. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Construction of Highly Active Zn3In2S6 (110)/g-C3N4 System by Low Temperature Solvothermal for Efficient Degradation of Tetracycline under Visible Light. Int J Mol Sci 2022; 23:ijms232113221. [DOI: 10.3390/ijms232113221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/15/2022] [Accepted: 10/27/2022] [Indexed: 11/17/2022] Open
Abstract
Herein, Zn3In2S6 photocatalyst with (110) exposed facet was prepared by low temperature solvothermal method. On this basis, a highly efficient binary Zn3In2S6/g-C3N4 was obtained by low temperature solvothermal method and applied to the degradation of tetracycline (TC). The samples of the preparation were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, UV–vis diffuse reflection spectroscopy, and photoluminescence spectroscopy. Furthermore, the degradation performance of photocatalysts on TC was investigated under different experimental conditions. Finally, the mechanism of Zn3In2S6/g-C3N4 composite material degrading TC is discussed. The results show that Zn3In2S6 and Zn3In2S6/g-C3N4 photocatalysts with excellent performance could be successfully prepared at lower temperature. The Zn3In2S6/g-C3N4 heterojunction photocatalyst could significantly improve the photocatalytic activity compared with g-C3N4. After 150 min of illumination, the efficiency of 80%Zn3In2S6/g-C3N4 to degrade TC was 1.35 times that of g-C3N4. The improvement of photocatalytic activity was due to the formation of Zn3In2S6/g-C3N4 heterojunction, which promoted the transfer of photogenerated electron–holes. The cycle experiment test confirmed that Zn3In2S6/g-C3N4 composite material had excellent stability. The free radical capture experiment showed that ·O2− was the primary active material. This study provides a new strategy for the preparation of photocatalysts with excellent performance at low temperature.
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Mahmoudi F, Saravanakumar K, Maheskumar V, Njaramba LK, Yoon Y, Park CM. Application of perovskite oxides and their composites for degrading organic pollutants from wastewater using advanced oxidation processes: Review of the recent progress. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129074. [PMID: 35567810 DOI: 10.1016/j.jhazmat.2022.129074] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/29/2022] [Accepted: 05/02/2022] [Indexed: 06/15/2023]
Abstract
In the recent years, perovskite oxides are gaining an increasing amount of attention owing to their unique traits such as tunable electronic structures, flexible composition, and eco-friendly properties. In contrast, their catalytic performance is not satisfactory, which hinders real wastewater remediation. To overcome this shortcoming, various strategies are developed to design new perovskite oxide-based materials to enhance their catalytic activities in advanced oxidation process (AOPs). This review article is to provide overview of basic principle and different methods of AOPs, while the strategies to design novel perovskite oxide-based composites for enhancing the catalytic activities in AOPs have been highlighted. Moreover, the recent progress of their synthesis and applications in wastewater remediation (pertaining to the period 2016-2022) was described, and the related mechanisms were thoroughly discussed. This review article helps scientists to have a clear outlook on the selection and design of new effective perovskite oxide-based materials for the application of AOPs. At the end of the review, perspective on the challenges and future research directions are discussed.
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Affiliation(s)
- Farzaneh Mahmoudi
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
| | - Karunamoorthy Saravanakumar
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
| | - Velusamy Maheskumar
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
| | - Lewis Kamande Njaramba
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208, USA.
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
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Ultrasound-Assisted Hydrothermal Synthesis of SrSnO3/g-C3N4 Heterojunction with Enhanced Photocatalytic Performance for Ciprofloxacin under Visible Light. CRYSTALS 2022. [DOI: 10.3390/cryst12081062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this work, an SrSnO3/g-C3N4 heterojunction with different dosage of SrSnO3 was fabricated by an ultrasound-assisted hydrothermal approach and characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-visible diffuse reflectance spectra (UV-Vis DRS), and photoluminescence spectroscopy (PL). Ciprofloxacin was adopted to assess the degradation performance, and the sample combined with 40% SrSnO3 eliminated 93% of ciprofloxacin (20 mg/L) within 3 h under visible light, which is 6.6 and 1.7 times greater than for SrSnO3 and g-C3N4, respectively. Furthermore, 85% CIP was extinguished after five cycles of a photocatalytic process. Ultimately, a possible photocatalytic mechanism was dissected.
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Zehtab-Lotfi E, Amani-Ghadim AR, Soltani B. Visible light-driven photocatalytic activity of wide band gap ATiO 3 (A = Sr, Zn and Cd) perovskites by lanthanide doping and the formation of a mesoporous heterostructure with ZnS QDs. Dalton Trans 2022; 51:12198-12212. [PMID: 35894544 DOI: 10.1039/d2dt01751b] [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
Charge carrier recombination and wide band gap energy are still the main challenges in the visible-light-driven photocatalytic applications of titanate perovskites, ATiO3. Herein, three strategies are rationally used to achieve a titanate-based photocatalyst with high photocatalytic performance under visible light. In the first step, SrTiO3, ZnTiO3, and CdTiO3 perovskites were synthesized and their photocatalytic activity was evaluated in the degradation of methylene blue (MB) and bisphenol A (BPA). Then, a dysprosium cation (Dy3+) was doped into an ATiO3 crystalline lattice. Systematic investigations indicate that Dy doping in SrTiO3 and CdTiO3 extends the ligand to metal charge transfer absorption edge to visible wavelengths leading to the activation of doped perovskites under visible light. Higher visible-light-driven photocatalytic performance (73.29% for MB and 52.57% for BPA) and higher total organic carbon (TOC) removal (59.20% for MB and 39.53% for BPA) have been achieved by Dy doped CdTiO3 compared to other photocatalysts. Finally, we prepared a Dy-CdTP/ZnS QD mesoporous type-II heterostructure by the in situ growth of ZnS QDs on a flower-like Dy-CdTP. This design accelerates the separation and transfer of photogenerated electron-hole pairs. The surface area of the Dy-CdTP/ZnS QD heterostructure was ∼11.6 times greater than that of Dy-CdTP, offering a large surface area for the adsorption of organics, and abundant active sites for photocatalytic degradation. Taking advantage of the large surface area and considerable suppressing of the charge carrier recombination, the optimized Dy-CdTP(0.6)/ZnS QD photocatalyst exhibits excellent and stable performance for the degradation of MB (98.25%) and BPA (89.12%) with their considerable mineralization under visible light.
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Affiliation(s)
- Elnaz Zehtab-Lotfi
- Department of Chemistry, Faculty of Science, Azarbaijan Shahid Madani University (ASMU), Tabriz 53751-71379, Iran
| | - Ali Reza Amani-Ghadim
- Applied Chemistry Research laboratory, Department of Chemistry, Faculty of Basic Science, Azarbaijan Shahid Madani University (ASMU), Tabriz 53751-71379, Iran. .,New Technologies in the Environment Research Center, Azarbaijan Shahid Madani University (ASMU), Tabriz 53751-71379, Iran
| | - Behzad Soltani
- Department of Chemistry, Faculty of Science, Azarbaijan Shahid Madani University (ASMU), Tabriz 53751-71379, Iran
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Zheng X, Zhu Q, Peng H, Quan Y, Wen J. Efficient solar-light induced photocatalytic capacity of Mg-Al LDO coupled with N-defected g-C3N4. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138846] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Tran Huu H, Thi MDN, Nguyen VP, Thi LN, Phan TTT, Hoang QD, Luc HH, Kim SJ, Vo V. One-pot synthesis of S-scheme MoS 2/g-C 3N 4 heterojunction as effective visible light photocatalyst. Sci Rep 2021; 11:14787. [PMID: 34285258 PMCID: PMC8292365 DOI: 10.1038/s41598-021-94129-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 06/29/2021] [Indexed: 02/06/2023] Open
Abstract
Despite pioneering as the holy grail in photocatalysts, abundant reports have demonstrated that g-C3N4 performs poor photocatalytic activity due to its high recombination rate of photo-induced charge carriers. Many efforts have been conducted to overcome this limitation in which the semiconductor-semiconductor coupling strategies toward heterojunction formation were considered as the easiest but the most effective method. Herein, a one-pot solid-state reaction of thiourea and sodium molybdate as precursors at different temperatures under N2 gas was applied for preparing composites of MoS2/g-C3N4. The physicochemical characterization of the final products determines the variation in contents of components (MoS2 and g-C3N4) via the increase of synthesis temperature. The enhanced photocatalytic activity of the MoS2/g-C3N4 composites was evaluated by the degradation of Rhodamine B in an aqueous solution under visible light. Therein, composites synthesized at 500 °C showed the best photocatalytic performance with a degradation efficiency of 90%, much higher than that of single g-C3N4. The significant improvement in photocatalytic performance is attributed to the enhancement in light-harvesting and extension in photo-induced charge carriers' lifetime of composites which are originated from the synergic effect between the components. Besides, the photocatalytic mechanism is demonstrated to well-fit into the S-scheme pathway with apparent evidences.
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Affiliation(s)
- Ha Tran Huu
- grid.444874.f0000 0000 8688 4708Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, 55000 Binh Dinh Vietnam
| | - My Duyen Nguyen Thi
- grid.444874.f0000 0000 8688 4708Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, 55000 Binh Dinh Vietnam
| | - Van Phuc Nguyen
- grid.444874.f0000 0000 8688 4708Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, 55000 Binh Dinh Vietnam
| | - Lan Nguyen Thi
- grid.444874.f0000 0000 8688 4708Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, 55000 Binh Dinh Vietnam
| | - Thi Thuy Trang Phan
- grid.444874.f0000 0000 8688 4708Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, 55000 Binh Dinh Vietnam
| | - Quoc Dat Hoang
- grid.452916.dVietnam Ministry of Science and Technology, 113 Tran Duy Hung, Cau Giay, Hanoi, 10000 Vietnam
| | - Huy Hoang Luc
- grid.440774.40000 0004 0451 8149Faculty of Physics, Hanoi National University of Education, Hanoi, 100000 Vietnam
| | - Sung Jin Kim
- grid.255649.90000 0001 2171 7754Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 120-750 South Korea
| | - Vien Vo
- grid.444874.f0000 0000 8688 4708Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, 55000 Binh Dinh Vietnam
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