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Govinda Raj M, Mahalingam S, Gnanarani SV, Jayashree C, Ganeshraja AS, Pugazhenthiran N, Rahaman M, Abinaya S, Senthil B, Kim J. TiO 2 nanorod decorated with MoS 2 nanospheres: An efficient dual-functional photocatalyst for antibiotic degradation and hydrogen production. CHEMOSPHERE 2024; 357:142033. [PMID: 38615961 DOI: 10.1016/j.chemosphere.2024.142033] [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: 02/19/2024] [Revised: 04/09/2024] [Accepted: 04/11/2024] [Indexed: 04/16/2024]
Abstract
The design and preparation of dual-functional photocatalysts for simultaneously realizing photocatalytic wastewater purification and hydrogen energy generation pose significant challenges. This article presents the engineering of a binary heterostructured photocatalyst by combining TiO2 (nanorods) and MoS2 nanosphere using a straightforward solvothermal method and the assessment of the phase structures, morphologies, and optical properties of the resulting nanocomposites using diverse analytical techniques. The TiO2(Rod)/MoS2 composite exhibits remarkable efficacy in degrading ciprofloxacin, achieving 93% removal rate within 1 h, which is four times higher than that of bare TiO2. Moreover, the optimized TiO2(Rod)/MoS2 presents an outstanding hydrogen production rate of 7415 μmol g-1, which is ∼24 times higher than that of pristine TiO2. Under UV-visible light irradiation, the TiO2(Rod)/MoS2 heterojunction displays an exceptional photocatalytic performance in terms of both photodegradation and hydrogen production, surpassing the performance of TiO2 particle/MoS2. The study findings demonstrate that TiO2(Rod)/MoS2 nanocomposites exhibit considerably improved photocatalytic degradation and hydrogen generation activities. Based on the experimental results, a possible mechanism is proposed for the transfer and separation of charge carriers in Z-scheme heterojunctions.
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Affiliation(s)
- Muniyandi Govinda Raj
- Centre for Herbal Pharmacology and Environmental Sustainability Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Chennai, 603 103, India
| | - Shanmugam Mahalingam
- Department of Materials System Engineering, Pukyong National University, Busan, 48513, Republic of Korea
| | - Solomon Vasthi Gnanarani
- Department of Chemistry, SRM Institute of Science and Technology, Faculty of Engineering and Technology, Ramapuram, Chennai, 600089, India
| | - Charmakani Jayashree
- Department of Chemistry, SRM Institute of Science and Technology, Faculty of Engineering and Technology, Ramapuram, Chennai, 600089, India
| | - Ayyakannu Sundaram Ganeshraja
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Poonamallee High Road, Chennai, 600 077, Tamil Nadu, India
| | | | - Mostafizur Rahaman
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Srinivasan Abinaya
- Department of Chemistry, SRM Institute of Science and Technology, Faculty of Engineering and Technology, Ramapuram, Chennai, 600089, India
| | - Bakthavatchalam Senthil
- Department of Chemistry, SRM Institute of Science and Technology, Faculty of Engineering and Technology, Ramapuram, Chennai, 600089, India.
| | - Junghwan Kim
- Department of Materials System Engineering, Pukyong National University, Busan, 48513, Republic of Korea.
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Shen J, Liu J, Fan X, Liu H, Bao Y, Hui A, Munir HA. Unveiling the antibacterial strategies and mechanisms of MoS 2: a comprehensive analysis and future directions. Biomater Sci 2024; 12:596-620. [PMID: 38054499 DOI: 10.1039/d3bm01030a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Antibiotic resistance is a growing problem that requires alternative antibacterial agents. MoS2, a two-dimensional transition metal sulfide, has gained significant attention in recent years due to its exceptional photocatalytic performance, excellent infrared photothermal effect, and impressive antibacterial properties. This review presents a detailed analysis of the antibacterial strategies and mechanism of MoS2, starting with its morphology and synthesis methods and focusing on the different interaction stages between MoS2 and bacteria. The paper summarizes the main antibacterial mechanisms of MoS2, such as photocatalytic antibacterial, enzyme-like catalytic antibacterial, physical antibacterial, and photothermal-assisted antibacterial. It offers a comprehensive discussion focus on recent research studies of photocatalytic antibacterial mechanisms and categorizes them, guiding the application of MoS2 in the antibacterial field. Overall, the review provides an in-depth understanding of the antibacterial mechanisms of MoS2 and presents the challenges and future directions for the improvement of MoS2 in the field of high-efficiency antibacterial materials.
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Affiliation(s)
- Jiahao Shen
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an, 710021, PR China.
| | - Junli Liu
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an, 710021, PR China.
| | - Xiuyi Fan
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an, 710021, PR China.
| | - Hui Liu
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an, 710021, PR China.
| | - Yan Bao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - AiPing Hui
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-Materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
| | - Hafiz Akif Munir
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an, 710021, PR China.
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Loukopoulos S, Sakellis E, Kostakis MG, Gerokonstantis DT, Tsipas P, Gardelis S, Kontos AG, Katsaros FK, Sideratou Z, Romanos GE, Dimoulas A, Thomaidis NS, Likodimos V. Co-assembled MoS 2-TiO 2 Inverse Opal Photocatalysts for Visible Light-Activated Pharmaceutical Photodegradation. ACS OMEGA 2023; 8:33639-33650. [PMID: 37744818 PMCID: PMC10515384 DOI: 10.1021/acsomega.3c03881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 08/18/2023] [Indexed: 09/26/2023]
Abstract
Heterostructured photocatalytic materials in the form of photonic crystals have been attracting attention for their unique light harvesting ability that can be ideally combined with judicious compositional modifications toward the development of visible light-activated (VLA) photonic catalysts, though practical environmental applications, such as the degradation of pharmaceutical emerging contaminants, have been rarely reported. Herein, heterostructured MoS2-TiO2 inverse opal films are introduced as highly active immobilized photocatalysts for the VLA degradation of tetracycline and ciprofloxacin broad-spectrum antibiotics as well as salicylic acid. A single-step co-assembly method was implemented for the challenging incorporation of MoS2 nanosheets into the nanocrystalline inverse opal walls. Compositional tuning and photonic band gap engineering of the MoS2-TiO2 photonic films showed that integration of low amounts of MoS2 nanosheets in the inverse opal framework maintains intact the periodic macropore structure and enhances the available surface area, resulting in efficient VLA antibiotic degradation far beyond the performance of benchmark TiO2 films. The combination of broadband MoS2 visible light absorption and photonic-assisted light trapping together with the enhanced charge separation that enables the generation of reactive oxygen species via firm interfacial coupling between MoS2 nanosheets and TiO2 nanoparticles is concluded as a competent approach for pharmaceutical abatement in water bodies.
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Affiliation(s)
- Stelios Loukopoulos
- Section
of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, University Campus, Zografou, Athens 15784, Greece
| | - Elias Sakellis
- Institute
of Nanoscience and Nanotechnology, National
Center for Scientific Research “Demokritos”, Agia Paraskevi, Athens 15341, Greece
| | - Marios G. Kostakis
- Laboratory
of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, University Campus, Zografou, Athens 15771, Greece
| | - Dimitrios-Triantafyllos Gerokonstantis
- Laboratory
of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, University Campus, Zografou, Athens 15771, Greece
| | - Polychronis Tsipas
- Institute
of Nanoscience and Nanotechnology, National
Center for Scientific Research “Demokritos”, Agia Paraskevi, Athens 15341, Greece
| | - Spiros Gardelis
- Section
of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, University Campus, Zografou, Athens 15784, Greece
| | - Athanassios G. Kontos
- Institute
of Nanoscience and Nanotechnology, National
Center for Scientific Research “Demokritos”, Agia Paraskevi, Athens 15341, Greece
- Department
of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Athens 15780, Greece
| | - Fotis K. Katsaros
- Institute
of Nanoscience and Nanotechnology, National
Center for Scientific Research “Demokritos”, Agia Paraskevi, Athens 15341, Greece
| | - Zili Sideratou
- Institute
of Nanoscience and Nanotechnology, National
Center for Scientific Research “Demokritos”, Agia Paraskevi, Athens 15341, Greece
| | - George Em. Romanos
- Institute
of Nanoscience and Nanotechnology, National
Center for Scientific Research “Demokritos”, Agia Paraskevi, Athens 15341, Greece
| | - Athanasios Dimoulas
- Institute
of Nanoscience and Nanotechnology, National
Center for Scientific Research “Demokritos”, Agia Paraskevi, Athens 15341, Greece
| | - Nikolaos S. Thomaidis
- Laboratory
of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, University Campus, Zografou, Athens 15771, Greece
| | - Vlassis Likodimos
- Section
of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, University Campus, Zografou, Athens 15784, Greece
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Rashid J, Tufail Bhatti T, Hassan M, Barakat M, Kumar R, Xu M. Enhancement in anaerobic biogas conversion by visible light photocatalytic Pre-treatment of rice husk with indium vanadate decorated titanium dioxide nanocomposite. FUEL 2023; 346:128289. [DOI: 10.1016/j.fuel.2023.128289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Tian C, Yuan P, Huang W, Song F, Zhao W. MoS 2 nanosheets embedded in α-FeOOH as an efficient cathode for enhanced MFC-electro-Fenton performance in wastewater treatment. ENVIRONMENTAL RESEARCH 2023; 216:114818. [PMID: 36400219 DOI: 10.1016/j.envres.2022.114818] [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: 09/19/2022] [Revised: 11/02/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
Microbial fuel cell-electro-Fenton system (MEF) has attracted attention due to refractory organic pollutants removal, where H2O2 is in-situ produced without external energy supply. Enhancement of H2O2 production and the activation of H2O2 to ·OH are the keys to improve degradation performance. Development of bifunctional catalytic cathode is a viable strategy. Herein, the α-FeOOH/MoS2 nanocomposites was fabricated by a novel facile hydrothermal method based on molybdenite-exfoliated MoS2 nanosheets suspension, which was used as modified cathode in a MEF system. The obtained α-FeOOH/1 wt%MoS2 cathode exhibited highest power density of 292.38 mW/m2, which was about 3.7 and 1.7 times higher than that of graphite plate and α-FeOOH, respectively. Doping of MoS2 nanosheets significantly enhanced electrocatalytic activity of the cathode and promoted in-situ H2O2 generation. Meanwhile, the exposed reductive Mo4+ on the surface of MoS2 could greatly facilitate the conversion cycle of Fe(III)/Fe(II), leading to the efficient activation of H2O2 into ·OH. The MEF with α-FeOOH/1 wt%MoS2 cathode exhibited excellent degradation and mineralization performance for MB, rhodamine B and tetracycline hydrochloride at optimized reaction condition. Furthermore, the MEF can simultaneously achieve MB oxidation and Cr(VI) reduction, and the corresponding removal ratio can reach up to 91.45% and 100%, respectively. Based on simple preparation method as well as recyclability and excellent catalytic property, the α-FeOOH/MoS2 composite catalyst is considered as a promising MEF cathode for efficient wastewater treatment.
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Affiliation(s)
- Congqi Tian
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China; Baotou Research Institute of Rare Earths, Baotou, 014030, China
| | - Ping Yuan
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Weili Huang
- Inner Mongolia Academy of Forestry, Hohhot, 010010, China
| | - Feiyu Song
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Wenyan Zhao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China.
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Rostami M, Badiei A, Ganjali MR, Rahimi-Nasrabadi M, Naddafi M, Karimi-Maleh H. Nano-architectural design of TiO 2 for high performance photocatalytic degradation of organic pollutant: A review. ENVIRONMENTAL RESEARCH 2022; 212:113347. [PMID: 35513059 DOI: 10.1016/j.envres.2022.113347] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/18/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
In the past several decades, significant efforts have been paid toward photocatalytic degradation of organic pollutants in environmental research. During the past years, titanium dioxide nano-architectures (TiO2 NAs) have been widely used in water purification applications with photocatalytic degradation processes under Uv/Vis light illumination. Photocatalysis process with nano-architectural design of TiO2 is viewed as an efficient procedure for directly channeling solar energy into water treatment reactions. The considerable band-gap values and the subsequent short life time of photo-generated charge carriers are showed among the limitations of this approach. One of these effective efforts is the using of oxidation processes with advance semiconductor photocatalyst NAs for degradation the organic pollutants under UV/Vis irradiation. Among them, nano-architectural design of TiO2 photocatalyst (such as Janus, yolk-shell (Y@S), hollow microspheres (HMSs) and nano-belt) is an effective way to improve oxidation processes for increasing photocatalytic activity in water treatment applications. In the light of the above issues, this study tends to provide a critical overview of the used strategies for preparing TiO2 photocatalysts with desirable physicochemical properties like enhanced absorption of light, low density, high surface area, photo-stability, and charge-carrier behavior. Among the various nanoarchitectural design of TiO2, the Y@S and HMSs have created a great appeal given their considerable large surface area, low density, homogeneous catalytic environment, favorable light harvesting properties, and enhanced molecular diffusion kinetics of the particles. In this review was summarized the developments that have been made for nano-architectural design of TiO2 photocatalyst. Additional focus is placed on the realization of interfacial charge and the possibility of achieving charge carriers separation for these NAs as electron migration is the extremely important factor for increasing the photocatalytic activity.
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Affiliation(s)
- Mojtaba Rostami
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Alireza Badiei
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology and Metabolism Molecular Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Rahimi-Nasrabadi
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran; Faculty of Pharmacy, Baqiyatallah University of Medical Sciences, Tehran, Iran; Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Freiberg, 09599, Germany
| | - Mastoureh Naddafi
- School of Resources and Environment, University of Electronic Science and Technology of China, 611731, Xiyuan Ave, Chengdu, PR China
| | - Hassan Karimi-Maleh
- School of Resources and Environment, University of Electronic Science and Technology of China, 611731, Xiyuan Ave, Chengdu, PR China; Department of Chemical Engineering, Quchan University of Technology, Quchan, 9477177870, Iran; Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus 2028, Johannesburg, 17011, South Africa.
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7
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Design and Preparation of Polyimide/TiO2@MoS2 Nanofibers by Hydrothermal Synthesis and Their Photocatalytic Performance. Polymers (Basel) 2022; 14:polym14163230. [PMID: 36015487 PMCID: PMC9412554 DOI: 10.3390/polym14163230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/30/2022] [Accepted: 07/05/2022] [Indexed: 11/24/2022] Open
Abstract
Organic–inorganic nanocomposite fibers can avoid the agglomeration of single nanoparticles and reduce the cost (nanoparticles assembled on the surface of nanofibers), but also can produce new chemical, electrical, optical, and other properties, with a composite synergistic effect. Aromatic polyimide (PI) is a high-performance polymer with a rigid heterocyclic imide ring and an aromatic benzene ring in its macromolecular framework. Due to its excellent mechanical properties, thermal stability, and easy-to-adjust molecular structure, PI has been widely used in electronics, aerospace, automotive, and other industries related to many applications. Here, we report that TiO2 nanorods were grown on polyimide nanofibers by hydrothermal reaction, and MoS2 nanosheets were grown on TiO2 nanorods the same way. Based on theoretical analysis and experimental findings, the possible growth mechanism was determined in detail. Further experiments showed that MoS2 nanosheets were uniformly coated on the surface of TiO2 nanorods. The TiO2 nanorods have photocatalytic activity in the ultraviolet region, but the bandgap of organic/inorganic layered nanocomposites can redshift to visible light and improve their photocatalytic performance.
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Han Q, Cao H, Sun Y, Wang G, Poon S, Wang M, Liu B, Wang Y, Wang Z, Mi B. Tuning phase compositions of MoS 2 nanomaterials for enhanced heavy metal removal: performance and mechanism. Phys Chem Chem Phys 2022; 24:13305-13316. [PMID: 35608012 DOI: 10.1039/d2cp00705c] [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
Two-dimensional MoS2 nanosheets have shown great potential in heavy metal remediation due to their unique properties. MoS2 has two primary phases: 1T and 2H. Each has different physiochemical properties, but the impact of these differences on the overall material's heavy metal removal performance and associated mechanisms is rarely reported. In this study, we synthesized morphologically similar but phase-distinct MoS2 samples via hydrothermal synthesis, which comprised dominantly either a metallic 1T phase or a semiconducting 2H phase. 1T-MoS2 samples exhibited higher removal capacities for Ag+ and Pb2+ cations relative to 2H-MoS2. In particular, an eight-fold increase in the Pb2+ adsorption capacity was observed in the 1T-MoS2 samples (i.e. ∼632.9 mg g-1) compared to the 2H-MoS2 samples (∼81.6 mg g-1). The mechanisms driving the enhanced performance of 1T-MoS2 were investigated through detailed characterization of metal-laden MoS2 samples and DFT modelling. We found that 1T-MoS2 intrinsically had a larger interlayer spacing than 2H-MoS2 because water molecules were retained between the hydrophilic 1T nanosheets during hydrothermal synthesis. The widened interlayer spacing in 1T-MoS2 allowed the diffusion of heavy metal ions into the nanochannels, increasing the number of adsorption sites and total removal capacities. On the other hand, DFT modelling revealed the energy-favorable adsorption complex of Ag+ and Pb2+ for 1T-MoS2, in which each metal atom was bonded with three S atoms leading to much higher adsorption energies relative to 2H-MoS2 for Ag+ and Pb2+. This study unravels the underlying mechanisms of phase-dependent heavy metal remediation by MoS2 nanosheets, providing an important guide for the use of 2D nanomaterials in environmental applications which include heavy metal removal, contaminant sensing, and membrane separation.
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Affiliation(s)
- Qi Han
- Department of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Hao Cao
- Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yuchen Sun
- Department of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Gang Wang
- Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Sidney Poon
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, USA
| | - Monong Wang
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, USA
| | - Bei Liu
- Department of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Yanggang Wang
- Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhongying Wang
- Department of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Baoxia Mi
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, USA
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Abstract
The quest for a clean, renewable and sustainable energy future has been highly sought for by the scientific community over the last four decades. Photocatalytic water splitting is a very promising technology to proffer a solution to present day environmental pollution and energy crises by generating hydrogen fuel through a “green route” without environmental pollution. Transition metal dichalcogenides (TMDCs) have outstanding properties which make them show great potential as effective co-catalysts with photocatalytic materials such as TiO2, ZnO and CdS for photocatalytic water splitting. Integration of TMDCs with a photocatalyst such as TiO2 provides novel nanohybrid composite materials with outstanding characteristics. In this review, we present the current state of research in the application of TMDCs in photocatalytic water splitting. Three main aspects which consider their properties, advances in the synthesis routes of layered TMDCs and their composites as well as their photocatalytic performances in the water splitting reaction are discussed. Finally, we raise some challenges and perspectives in their future application as materials for water-splitting photocatalysts.
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Hunge YM, Yadav AA, Kang SW, Kim H. Photocatalytic degradation of tetracycline antibiotics using hydrothermally synthesized two-dimensional molybdenum disulfide/titanium dioxide composites. J Colloid Interface Sci 2022; 606:454-463. [PMID: 34399362 DOI: 10.1016/j.jcis.2021.07.151] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 01/18/2023]
Abstract
Tetracycline (TC) is a persistent antibiotic used in many countries, including China, India, and the United States of America (USA), because of its low price and effectiveness in enhancing livestock production. However, such antibiotics can have toxic effects on living organisms via complexation with metals, and their accumulation leading to teratogenicity and carcinogenicity. In this study, two-dimensional molybdenum disulfide/titanium dioxide (MoS2/TiO2) composites with different amounts of molybdenum disulfide (MoS2) were prepared via a simple, cost-effective, and pollution-free hydrothermal route. The synthesized MoS2/TiO2 microstructures were thoroughly characterized and their performance for the photocatalytic degradation of antibiotics such as TC was investigated. In the degradation experiments, the photocatalytic activities of TiO2 and the MoS2/TiO2 composites were compared, and the effects of different parameters, such as catalyst dose and electrolyte solution pH, were investigated. Under irradiation, the MoS2/TiO2 composites possessed superior photodegradation activity toward TC because of their excellent adsorption abilities, suitable band positions, and large surface areas as well as the effective charge-transfer ability of MoS2. Kinetics studies revealed that the photocatalytic degradation process followed pseudo-first-order reaction kinetics. In addition, a degradation mechanism for TC was proposed.
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Affiliation(s)
- Y M Hunge
- Division of Biotechnology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - A A Yadav
- Department of Automotive Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Seok-Won Kang
- Department of Automotive Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Hyunmin Kim
- Division of Biotechnology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea; Department of Interdisciplinary Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea.
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Shao Z, Liu W, Zhang Y, Yang X, Zhong M. Insights on interfacial charge transfer across MoS2/TiO2-NTAs nanoheterostructures for enhanced photodegradation and biosensing&gas-sensing performance. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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Ma Y, Jia YL, Lin YH, Shi WB. Hierarchical Brookite TiO₂-Bi₂MoO 6 Nanospheres with Efficient Visible-Light-Driven Photocatalytic Response. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:5370-5377. [PMID: 33875131 DOI: 10.1166/jnn.2021.19344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Hierarchical TiO₂-Bi₂MoO6 nanospheres as efficient visible-light responsive photocatalyst are fabricated by dispersing brookite TiO₂ nanorods on the hierarchical Bi₂MoO6 nanospheres, which provides visible-light absorption and large surface area. The morphologies, surface area and light absorption features of as-prepared TiO²-Bi²MoO6 can be rational controlled by varying the loading amount of TiO² nanorods on hierarchical Bi²MoO6 nanospheres. As a result, the TiO²-Bi²MoO6-3 yields 380 ppm CO² production for decomposing 2-propanol at 11 h under visible light irradiation, realizing 4.4 times enhancement of photocatalytic property with respect to pure TiO² nanorods. Moreover, the three-dimensional hierarchical architecture enables the hybrid TiO²-Bi²MoO6 excellent cycling stability.
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Affiliation(s)
- Ying Ma
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing, 408000, China
| | - Yu-Long Jia
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing, 408000, China
| | - Yin-He Lin
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing, 408000, China
| | - Wen-Bing Shi
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing, 408000, China
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Li H, Song Y, Zhang J, He J. Turbulence enhanced ferroelectric-nanocrystal-based photocatalysis in urchin-like TiO 2/BaTiO 3 microspheres for hydrogen evolution. NANOSCALE ADVANCES 2021; 3:5618-5625. [PMID: 36133275 PMCID: PMC9419306 DOI: 10.1039/d1na00331c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 07/15/2021] [Indexed: 06/15/2023]
Abstract
The application of a built-in electric field due to piezoelectric potential is one of the most efficient approaches for photo-induced charge transport and separation. However, the efficiency of converting mechanical energy to chemical energy is still very low, and the enhancement of photocatalysis, thus, is limited. To overcome this problem, here, we propose sonophotocatalysis based on a new hybrid photocatalyst, which combines ferroelectric nanocrystals (BaTiO3) and dendritic TiO2 to form an urchin-like TiO2/BaTiO3 hybrid photocatalyst. Under periodic ultrasonic excitation, a spontaneous polarization potential of BaTiO3 nanocrystals in response to ultrasonic waves can act as an alternating built-in electric field to separate photoinduced carriers incessantly, which can significantly enhance the photocatalytic activity and cyclic performance of the urchin-like TiO2/BaTiO3 catalyst. More importantly, the significant enhancement of photocatalytic hydrogen evolution is due to the coupling effect of two types of piezoelectric potential in the presence of BaTiO3 nanocubes as well as the semiconductor and optical properties of TiO2 nanowires of the urchin-like TiO2/BaTiO3 hybrid structure under simulated sunlight and periodic ultrasonic irradiation, which can significantly improve the efficiency of converting mechanical energy to chemical energy.
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Affiliation(s)
- Haidong Li
- College of Materials Science and Engineering, Qingdao University Qingdao 266071 PR China
| | - Yanyan Song
- College of Materials Science and Engineering, Qingdao University Qingdao 266071 PR China
| | - Jiyun Zhang
- College of Materials Science and Engineering, Qingdao University Qingdao 266071 PR China
| | - Jiating He
- Institute of Materials Research and Engineering, ASTAR Singapore 138634
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14
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Li Y, Tang J, Wei Y, He W, Tang Z, Zhang X, Xiong J, Zhao Z. The heterojunction between 3D ordered macroporous TiO2 and MoS2 nanosheets for enhancing visible-light driven CO2 reduction. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101648] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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15
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Wang F, Hao M, Liu W, Yan P, Fang B, Li S, Liang J, Zhu M, Cui L. Low-cost fabrication of highly dispersed atomically-thin MoS2 nanosheets with abundant active Mo-terminated edges. NANO MATERIALS SCIENCE 2021. [DOI: 10.1016/j.nanoms.2020.10.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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16
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One pot synthesis of 1T@2H-MoS2/SnS2 heterojunction as a photocatalyst with excellent visible light response due to multiphase synergistic effect. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111230] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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17
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Nguyen VQ, Mady AH, Mahadadalkar MA, Baynosa ML, Kumar DR, Rabie AM, Lee J, Kim WK, Shim JJ. Highly active Z-scheme heterojunction photocatalyst of anatase TiO 2 octahedra covered with C-MoS 2 nanosheets for efficient degradation of organic pollutants under solar light. J Colloid Interface Sci 2021; 606:337-352. [PMID: 34392030 DOI: 10.1016/j.jcis.2021.07.128] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 07/21/2021] [Accepted: 07/25/2021] [Indexed: 12/19/2022]
Abstract
The construction of a Z-scheme photocatalyst by coupling semiconductors with conductors is an efficient way to achieve high pollutant degradation efficiency. In this study, a hydrothermal approach was used to fabricate a Z-scheme photocatalyst consisting of C-MoS2 sheets wrapped around octahedral anatase TiO2 nanocrystals. The catalyst showed excellent photocatalytic efficiency (99%) for methylene blue degradation with low catalyst loading (0.2 g L-1) under the simulated solar light within 60 min. High photocatalytic degradation efficiencies were also observed for Rhodamine B, methyl orange, and tetracycline under solar irradiation. The C-MoS2 acts as an electron mediator and serves as a carrier transmission bridge for the efficient electron-hole separation. The electron-rich (101)-faceted TiO2 benefits the Z-scheme recombination of electrons from the conduction band of TiO2 and holes at the valence band of MoS2. The semiconductor coupling of (101)-exposed octahedral TiO2 and 2H-MoS2 as well as the introduction of solid-state electron mediators, 1T-MoS2 and carbon, resulted in increased light absorption and accelerated charge transfer at the contact interface, which enhanced the photocatalytic activity of the photocatalyst significantly compared to those of P25, MoS2/TiO2, and C-MoS2. The efficient separation of electron-hole pairs prolongs their lifetime for oxidation and reduction reactions in the degradation process.
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Affiliation(s)
- Van Quang Nguyen
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea; Faculty of Road and Bridge Engineering, The University of Da Nang-University of Science and Technology, 54 Nguyen Luong Bang, Da Nang 550000, Viet Nam
| | - Amr Hussein Mady
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea; Petrochemical Department, Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Manjiri A Mahadadalkar
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Marjorie Lara Baynosa
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea; Department of Chemical Engineering, University of the Philippines-Diliman, Diliman, Quezon City 1101, Philippines
| | - Deivasigamani Ranjith Kumar
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Abdelrahman M Rabie
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea; Petrochemical Department, Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Woo Kyoung Kim
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Jae-Jin Shim
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea.
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18
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Nayak S, Parida K. Recent Progress in LDH@Graphene and Analogous Heterostructures for Highly Active and Stable Photocatalytic and Photoelectrochemical Water Splitting. Chem Asian J 2021; 16:2211-2248. [PMID: 34196114 DOI: 10.1002/asia.202100506] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/25/2021] [Indexed: 01/16/2023]
Abstract
Photocatalytic (PC) and photoelectrochemical (PEC) water splitting is a plethora of green technological process, which transforms copiously available photon energy into valuable chemical energy. With the augmentation of modern civilization, developmental process of novel semiconductor photocatalysts proceeded at a sweltering rate, but the overall energy conversion efficiency of semiconductor photocatalysts in PC/PEC is moderately poor owing to the instability ariseing from the photocorrosion and messy charge configuration. Particularly, layered double hydroxides (LDHs) as reassuring multifunctional photocatalysts, turned out to be intensively investigated owing to the lamellar structure and exceptional physico-chemical properties. However, major drawbacks of LDHs material are its low conductivity, sluggish mass transfer and structural instability in acidic media, which hinder their applicability and stability. To surmount these obstacles, the formation of LDH@graphene and analogus heterostructures could proficiently amalgamate multi-functionalities, compensate distinct shortcomings, and endow novel properties, which ensure effective charge separation to result in stability and superior catalytic activities. Herein, we aim to summarize the currently updated synthetic strategies used to design heterostructures of 2D LDHs with 2D/3D graphene and graphene analogus material as graphitic carbon nitride (g-C3 N4 ), and MoS2 as mediator, or interlayer support, or co-catalyst or vice versa for superior PC/PEC water splitting activities along with long-term stabilities. Furthermore, latest characterization technique measuring the stability along with variant interface mode for imparting charge separation in LDH@graphene and graphene analogus heterostructure has been identified in this field of research with understanding the intrinsic structural features and activities.
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Affiliation(s)
- Susanginee Nayak
- Centre for Nano Science and Nano Technology, ITER, Siksha 'O' Anusandhan Deemed to be University, Bhubaneswar, 751030, Odisha, India
| | - Kulamani Parida
- Centre for Nano Science and Nano Technology, ITER, Siksha 'O' Anusandhan Deemed to be University, Bhubaneswar, 751030, Odisha, India
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19
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Omar AMA, Hassen A, Metwalli OI, Saber MR, Mohamed SRE, Khalil ASG. Construction of 2D layered TiO 2@MoS 2heterostructure for efficient adsorption and photodegradation of organic dyes. NANOTECHNOLOGY 2021; 32:335605. [PMID: 33971641 DOI: 10.1088/1361-6528/abff8a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
In this work, heterostructures of coupled TiO2@MoS2with different phases of MoS2were synthesized via hydrothermal technique. The prepared materials were thoroughly characterized using various techniques, including XRD, SEM, transmission electron microscopy, Brunauer-Emmet-Teller, XPS, Zeta potential and UV-vis spectroscopy. The optimized nanocomposites were tested for the photocatalytic degradation of methyl Orange (MO) under visible light as well as the adsorption of Rhodamine b (RhB) and methelene blue (MB) dyes. The TiO2@1T/2H-MoS2heterostructures exhibited a narrow bandgap compared to the other studied nanomaterials. A remarkable photodegradation efficiency of TiO2@1T/2H-MoS2was observed, which completely degraded 20 ppm of MO after 60 min with high stability over four successive cycles. This can be assigned to the formation of unique heterostructures with aligned energy bands between MoS2nanosheets and TiO2nanobelts. The formation of these novel interfaces promoted the electron transfer and increased the separation efficiency of carriers, resulting in high photocatalytic degradation. Furthermore, the adsorption efficiency of TiO2@1T/2H-MoS2was unique, 20 ppm solutions of RhB and MB were removed after 1 and 2 min, respectively. The superior adsorption performance of the TiO2@1T/2H-MoS2can be attributed to its high surface area (279.9 m2g-1) and the rich concentration of active sites. The kinetics and the isothermal analysis revealed that the TiO2@1T/2H MoS2heterstructures have maximum adsorption capacity of 1200 and 970 mg g-1for RhB and MB, respectively. This study provides a powerful way for designing an effective photocatalyst and adsorbent TiO2-based nanocomposites for water remediation.
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Affiliation(s)
- Asmaa M A Omar
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Arafa Hassen
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Ossama I Metwalli
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Mohamed R Saber
- Chemistry Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Sayed R E Mohamed
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Ahmed S G Khalil
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
- Materials Science & Engineering Department, School of Innovative Design Engineering, Egypt-Japan University of Science and Technology (E-JUST), 179 New Borg El-Arab City, Egypt
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20
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Chen C, Zang J, Wang Q, Li Y. Loading SnS 2 nanosheets decorated with MoS 2 nanoparticles on a flake-shaped g-C 3N 4 network for enhanced photocatalytic performance. CrystEngComm 2021. [DOI: 10.1039/d1ce00385b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A g-C3N4/MoS2/SnS2 ternary composite photocatalyst with a unique photo-generated carrier transfer pathway is obtained, which exhibits excellent photocatalytic activity.
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Affiliation(s)
- Changzhao Chen
- School of Mechanics and Optoelectronics Physics
- Anhui University of Science and Technology
- Huainan 232001
- China
| | - Jiyuan Zang
- School of Mechanics and Optoelectronics Physics
- Anhui University of Science and Technology
- Huainan 232001
- China
| | - Qian Wang
- School of Mechanics and Optoelectronics Physics
- Anhui University of Science and Technology
- Huainan 232001
- China
| | - Yuanzhi Li
- School of Mechanics and Optoelectronics Physics
- Anhui University of Science and Technology
- Huainan 232001
- China
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21
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Wang Y, Li J, Wang B, Sun M, Yan X, Chen L, Bai G, Li Y. Bi 2O 2CO 3/TiO 2 hybrid with 0D/1D nanostructure: design, synthesis and photocatalytic performance. NEW J CHEM 2021. [DOI: 10.1039/d1nj00281c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 0D/1D hybrid structure endows the catalyst with faster migration of photo-generated carriers and less recombination of electron/hole pairs.
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Affiliation(s)
- Yanwei Wang
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
| | - Jiayi Li
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
| | - Bowei Wang
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Mingming Sun
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
| | - Xilong Yan
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Ligong Chen
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Guoyi Bai
- College of Chemistry and Environmental Science
- Hebei University
- Baoding 071002
- P. R. China
| | - Yang Li
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
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22
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Ma Y, Cui J, Yin M, Li X, Jiang T, Zhang F, Zhu Y, Liu Y. Enhancement of visible light driven dye degradation and photocatalytic H 2 evolution over MoS 2 through combination with perylene diimide aggregates. NEW J CHEM 2021. [DOI: 10.1039/d1nj01999f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The incorporation of PPDI MBs into MoS2 NFs changes the nature of their edge, increases the driving force to effectively separate and transfer the photogenerated charge carriers, and improves the overall photocatalytic performance of the material.
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Affiliation(s)
- Yongshan Ma
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- China
| | - Jingcheng Cui
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- China
| | - Mengmeng Yin
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- China
| | - Xuemei Li
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- China
| | - Tianyi Jiang
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- China
| | - Fengxia Zhang
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- China
| | - Yanyan Zhu
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- China
| | - Yuanyuan Liu
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- China
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23
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Facile synthesis and defect optimization of 2D-layered MoS 2 on TiO 2 heterostructure for industrial effluent, wastewater treatments. Sci Rep 2020; 10:21625. [PMID: 33303829 PMCID: PMC7728806 DOI: 10.1038/s41598-020-78268-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 09/23/2020] [Indexed: 02/07/2023] Open
Abstract
Current research is paying much attention to heterojunction nanostructures. Owing to its versatile characteristics such as stimulating morphology, affluent surface-oxygen-vacancies and chemical compositions for enhanced generation of reactive oxygen species. Herein, we report the hydrothermally synthesized TiO2@MoS2 heterojunction nanostructure for the effective production of photoinduced charge carriers to enhance the photocatalytic capability. XRD analysis illustrated the crystalline size of CTAB capped TiO2, MoS2@TiO2 and L-Cysteine capped MoS2@TiO2 as 12.6, 11.7 and 10.2 nm, respectively. The bandgap of the samples analyzed by UV–Visible spectroscopy are 3.57, 3.66 and 3.94 eV. PL spectra of anatase phase titania shows the peaks present at and above 400 nm are ascribed to the defects in the crystalline structure in the form of oxygen vacancies. HRTEM reveals the existence of hexagonal layered MoS2 formation on the spherical shaped TiO2 nanoparticles at the interface. X-ray photoelectron spectroscopy recommends the chemical interactions between MoS2 and TiO2, specifically, oxygen vacancies. In addition, the electrochemical impedance spectroscopy studies observed that L-MT sample performed low charge transfer resistance (336.7 Ω cm2) that promotes the migration of electrons and interfacial charge separation. The photocatalytic performance is evaluated by quantifying the rate of Congo red dye degradation under visible light irradiation, and the decomposition efficiency was found to be 97%. The electron trapping recombination and plausible photocatalytic mechanism are also explored, and the reported work could be an excellent complement for industrial wastewater treatment.
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24
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Shan Y, Cui J, Liu Y, Zhao W. TiO 2 anchored on MoS 2 nanosheets based on molybdenite exfoliation as an efficient cathode for enhanced Cr (VI) reduction in microbial fuel cell. ENVIRONMENTAL RESEARCH 2020; 190:110010. [PMID: 32763281 DOI: 10.1016/j.envres.2020.110010] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 07/04/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
MoS2 nanosheet-decorated TiO2 nanocomposites were prepared via facile liquid-phase exfoliation of natural molybdenite combined with in situ hydrolysis route. These materials were used as a photocathode for the first time in microbial fuel cell (MFC) to reduce hexavalent chromium (Cr (VI)). Results showed the maximum power density of 1 wt% MoS2/TiO2-based MFC was 3.7 and 1.9 times higher than that of blank graphite and TiO2-based MFC, respectively. This MFC achieved 99.57% removal of Cr (VI) with a concentration of 20 mg L-1 within 8 h under visible light illumination at pH 2 and high degradation rate of 2.49 g m-3 h-1. The introduction of MoS2 nanosheets as a cocatalyst can expand the absorption of visible light, thereby leading to increased electronic participation in Cr (VI) reduction. Moreover, the appropriate amounts of MoS2 nanosheets also contribute to electrons migration and additional active site. The enhanced power output and Cr (VI) reduction efficiency of MFC can be attributed to the synergistic coupling between bioanode and MoS2/TiO2 photocathode. On the basis of its facile and scalable synthetic strategy as well as its stable and outstanding photoelectrocatalytic performance for MFC, this MoS2/TiO2 nanocomposite showed potential in the efficient treatment of wastewater.
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Affiliation(s)
- Yujie Shan
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Inner Mongolia, 010021, China
| | - Jiale Cui
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Inner Mongolia, 010021, China
| | - Ying Liu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Inner Mongolia, 010021, China
| | - Wenyan Zhao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Inner Mongolia, 010021, China.
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25
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Mahalakshmi G, Rajeswari M, Ponnarasi P. Synthesis of few-layer g-C3N4 nanosheets-coated MoS2/TiO2 heterojunction photocatalysts for photo-degradation of methyl orange (MO) and 4-nitrophenol (4-NP) pollutants. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108146] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Microwave-Assisted Solvothermal Synthesis of Chalcogenide Composite Photocatalyst and Its Photocatalytic CO2 Reduction Activity under Simulated Solar Light. Catalysts 2020. [DOI: 10.3390/catal10070789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A novel heterostructure consisting of Ru and Cu co-doped ZnS nanopowders (RCZS) into a MoS2-graphene hybrid (MSG) is successfully prepared by the microwave-assisted solvothermal approach. RCZS nanopowders are fabricated on the surface of MSG, which produces a nanoscale interfacial between RCZS and MSG. As the photo-excited electrons of RCZS can easily migrate to MoS2 through graphene by hindering the electron and hole (e– and h+) recombination, the photocatalytic activity could be improved by effective charge transfer. As RCZS are anchored onto the MSG, the photoluminescence intensity of the chalcogenide composite photocatalyst obviously decreases. In addition, a quaternary ruthenium and copper-based chalcogenide RCZS/MSG is able to improve the harvest and utilization of light. With the increase in the concentrations of Ru until 4 mol%, the band gap significantly decreases from 3.52 to 2.73 eV. At the same time, moderate modification by ruthenium can decrease the PL intensity compared to the pristine CZS/MSG sample, which indicates the enhancement of e– and h+ separation by Ru addition. The photocatalytic activity of as-synthesized chalcogenide composite photocatalysts is evaluated by the photocatalytic carbon dioxide reduction. Optimized operation conditions for carbon dioxide reduction have been performed, including the concentration of NaOH solution, the amount of RCZS/MSG photocatalyst, and the content of co-doped ruthenium. The doping of ruthenium would efficiently improve the performance of the photocatalytic activity for carbon dioxide reduction. The optimal conditions, such as the concentration of 2 M NaOH and the 0.5RCZS/MSG dosage of 0.05 g L–1, provide the maximum methane gas yield of 58.6 μmol h−1 g–1.
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27
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Photoelectrocatalytic degradation of sulfadiazine by Ag3PO4/MoS2/TiO2 nanotube array electrode under visible light irradiation. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114178] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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28
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Crystallization of TiO 2-MoS 2 Hybrid Material under Hydrothermal Treatment and Its Electrochemical Performance. MATERIALS 2020; 13:ma13122706. [PMID: 32545879 PMCID: PMC7345681 DOI: 10.3390/ma13122706] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 01/14/2023]
Abstract
Hydrothermal crystallization was used to synthesize an advanced hybrid system containing titania and molybdenum disulfide (with a TiO2:MoS2 molar ratio of 1:1). The way in which the conditions of hydrothermal treatment (180 and 200 °C) and thermal treatment (500 °C) affect the physicochemical properties of the products was determined. A physicochemical analysis of the fabricated materials included the determination of the microstructure and morphology (scanning and transmission electron microscopy—SEM and TEM), crystalline structure (X-ray diffraction method—XRD), chemical surface composition (energy dispersive X-ray spectroscopy—EDS) and parameters of the porous structure (low-temperature N2 sorption), as well as the chemical surface concentration (X-ray photoelectron spectroscop—XPS). It is well known that lithium-ion batteries (LIBs) represent a renewable energy source and a type of energy storage device. The increased demand for energy means that new materials with higher energy and power densities continue to be the subject of investigation. The objective of this research was to obtain a new electrode (anode) component characterized by high work efficiency and good electrochemical properties. The synthesized TiO2-MoS2 material exhibited much better electrochemical stability than pure MoS2 (commercial), but with a specific capacity ca. 630 mAh/g at a current density of 100 mA/g.
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29
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Li Z, Cao F, Wang L, Chen Z, Ji X. A novel ternary MoS2/MoO3/TiO2 composite for fast photocatalytic degradation of rhodamine B under visible-light irradiation. NEW J CHEM 2020. [DOI: 10.1039/c9nj04107a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article, novel ternary MoS2/MoO3/TiO2 composite catalysts were developed.
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Affiliation(s)
- Zhenyu Li
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Fa Cao
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Lei Wang
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Zhiwu Chen
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Xiaohong Ji
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510641
- China
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30
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Zhang J, Hu Y, Zheng H, Zhang P. Hierarchical Z-scheme 1D/2D architecture with TiO 2 nanowires decorated by MnO 2 nanosheets for efficient adsorption and full spectrum photocatalytic degradation of organic pollutants. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00419g] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel hierarchical 1D/2D TiO2/MnO2 composite shows superior adsorption, full spectrum photocatalytic activity and excellent stability for organic pollutant removal.
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Affiliation(s)
- Jiejing Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Yajie Hu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Hong Zheng
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Pengyi Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- School of Environment
- Tsinghua University
- Beijing 100084
- China
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31
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Guan G, Han M. Functionalized Hybridization of 2D Nanomaterials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1901837. [PMID: 31832321 PMCID: PMC6891915 DOI: 10.1002/advs.201901837] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/14/2019] [Indexed: 05/06/2023]
Abstract
The discovery of graphene and subsequent verification of its unique properties have aroused great research interest to exploit diversified graphene-analogous 2D nanomaterials with fascinating physicochemical properties. Through either physical or chemical doping, linkage, adsorption, and hybridization with other functional species into or onto them, more novel/improved properties are readily created to extend/expand their functionalities and further achieve great performance. Here, various functionalized hybridizations by using different types of 2D nanomaterials are overviewed systematically with emphasis on their interaction formats (e.g., in-plane or inter plane), synergistic properties, and enhanced applications. As the most intensely investigated 2D materials in the post-graphene era, transition metal dichalcogenide nanosheets are comprehensively investigated through their element doping, physical/chemical functionalization, and nanohybridization. Meanwhile, representative hybrids with more types of nanosheets are also presented to understand their unique surface structures and address the special requirements for better applications. More excitingly, the van der Waals heterostructures of diverse 2D materials are specifically summarized to add more functionality or flexibility into 2D material systems. Finally, the current research status and faced challenges are discussed properly and several perspectives are elaborately given to accelerate the rational fabrication of varied and talented 2D hybrids.
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Affiliation(s)
- Guijian Guan
- Institute of Molecular PlusTianjin UniversityTianjin300072P. R. China
| | - Ming‐Yong Han
- Institute of Materials Research and EngineeringA*STAR2 Fusionopolis WaySingapore138634Singapore
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32
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Li Y, Wang Z, Zhao H, Huang X, Yang M. 3D MoS2@TiO2@poly(methyl methacrylate) nanocomposite with enhanced photocatalytic activity. J Colloid Interface Sci 2019; 557:709-721. [DOI: 10.1016/j.jcis.2019.09.074] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 09/19/2019] [Accepted: 09/20/2019] [Indexed: 11/29/2022]
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33
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Zeng W, Liu L, Yi Y, Wu Y, Sun N, Lv B, Zhu G. A double-signal nanoprobe based on molybdenum disulfide quantum dots/manganese dioxide nanosheets for glutathione detection. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104149] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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34
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Irandost M, Akbarzadeh R, Pirsaheb M, Asadi A, Mohammadi P, Sillanpää M. Fabrication of highly visible active N, S co-doped TiO2@MoS2 heterojunction with synergistic effect for photocatalytic degradation of diclofenac: Mechanisms, modeling and degradation pathway. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111342] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Jo YK, Lee JM, Son S, Hwang SJ. 2D inorganic nanosheet-based hybrid photocatalysts: Design, applications, and perspectives. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2018.03.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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36
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Wu C, Zhang J, Tong X, Yu P, Xu JY, Wu J, Wang ZM, Lou J, Chueh YL. A Critical Review on Enhancement of Photocatalytic Hydrogen Production by Molybdenum Disulfide: From Growth to Interfacial Activities. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900578. [PMID: 31165564 DOI: 10.1002/smll.201900578] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/23/2019] [Indexed: 06/09/2023]
Abstract
Ultrathin 2D molybdenum disulfide (MoS2 ), which is the flagship of 2D transition-metal dichalcogenide nanomaterials, has drawn much attention in the last few years. 2D MoS2 has been banked as an alternative to platinum for highly active hydrogen evolution reaction because of its low cost, high surface-to-volume ratio, and abundant active sites. However, when MoS2 is used directly as a photocatalyst, contrary to public expectation, it still performs poorly due to lateral size, high recombination ratio of excitons, and low optical cross section. Besides, simply compositing MoS2 as a cocatalyst with other semiconductors cannot satisfy the practical application, which stimulates the pursual of a comprehensive insight into recent advances in synthesis, properties, and enhanced hydrogen production of MoS2 . Therefore, in this Review, emphasis is given to synthetic methods, phase transitions, tunable optical properties, and interfacial engineering of 2D MoS2 . Abundant ways of band edge tuning, structural modification, and phase transition are addressed, which can generate the neoteric photocatalytic systems. Finally, the main challenges and opportunities with respect to MoS2 being a cocatalyst and coherent light-matter interaction of MoS2 in photocatalytic systems are proposed.
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Affiliation(s)
- Cuo Wu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Jing Zhang
- Department of Materials Science and Nanoengineering, Rice University, Houston, TX, 77005, USA
| | - Xin Tong
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Peng Yu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Jing-Yin Xu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Jiang Wu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Zhiming M Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Jun Lou
- Department of Materials Science and Nanoengineering, Rice University, Houston, TX, 77005, USA
| | - Yu-Lun Chueh
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan, ROC
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC
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37
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Jia PY, Guo RT, Pan WG, Huang CY, Tang JY, Liu XY, Qin H, Xu QY. The MoS2/TiO2 heterojunction composites with enhanced activity for CO2 photocatalytic reduction under visible light irradiation. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.045] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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38
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Yin M, Zhang W, Qiao F, Sun J, Fan Y, Li Z. Hydrothermal synthesis of MoS2-NiS/CdS with enhanced photocatalytic hydrogen production activity and stability. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2018.12.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Saber MR, Khabiri G, Maarouf AA, Ulbricht M, Khalil ASG. A comparative study on the photocatalytic degradation of organic dyes using hybridized 1T/2H, 1T/3R and 2H MoS 2 nano-sheets. RSC Adv 2018; 8:26364-26370. [PMID: 35541940 PMCID: PMC9083085 DOI: 10.1039/c8ra05387a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 07/17/2018] [Indexed: 11/21/2022] Open
Abstract
MoS2 is a very attractive material and has been well studied for potential applications in various areas. However, due to the wide variety of factors affecting the molecular and electronic structure of MoS2, several contradictory reports about the adsorptive and photocatalytic properties of such materials have been published. In most of these reports, the effect of the actual phase of the materials on the properties was neglected. Here, different phases of MoS2 nanosheets (1T/2H, 1T/3R and 2H) have been obtained using the hydrothermal method with different Mo : S molar ratios and different autoclave filling ratios. The obtained materials have been thoroughly characterized using Raman, UV-vis, powder XRD, SEM, TEM and XPS measurements in order to accurately identify the existing phases in each material. A comparative study of the photocatalytic organic dye degradation efficiency under white light irradiation has been conducted using methyl orange to correlate the different activity of each material to the respective phase composition. The results indicate a much higher performance of the 1T/2H phase compared to the 2H and 3R phases. Detailed computational studies of the different phases revealed the emergence of mid-gap states upon introducing 1T sites into the 2H lattice. This leads to the improvement of the photocatalytic activity of 1T/2H compared to the other prepared materials.
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Affiliation(s)
- Mohamed R Saber
- Chemistry Department, Faculty of Science, Fayoum University Fayoum 63514 Egypt
| | - Gomaa Khabiri
- Physics Department, Center for Environmental and Smart Technology (CEST), Faculty of Science, Fayoum University Fayoum 63514 Egypt
| | - Ahmed A Maarouf
- Department of Physics, IRMC, Imam Abdulrahman Bin Faisal University Saudia Arabia
| | - Mathias Ulbricht
- Lehrstuhl für Technische Chemie II, Center for Water and Environmental Research (ZWU), Universität Duisburg-Essen 45141 Essen Germany
| | - Ahmed S G Khalil
- Physics Department, Center for Environmental and Smart Technology (CEST), Faculty of Science, Fayoum University Fayoum 63514 Egypt
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40
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Wu PR, Feng YM, Ge T, Kong YC, Ma ZS, Liu Z, Cheng ZL. An investigation on tribological properties of the chemically capped zinc borate(ZB)/MoS2 nanocomposites in oil. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.02.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Recent development on MoS2-based photocatalysis: A review. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2018. [DOI: 10.1016/j.jphotochemrev.2017.12.002] [Citation(s) in RCA: 284] [Impact Index Per Article: 47.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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42
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Song T, Zhang P, Wang T, Ali A, Zeng H. Constructing a novel strategy for controllable synthesis of corrosion resistant Ti 3+ self-doped titanium-silicon materials with efficient hydrogen evolution activity from simulated seawater. NANOSCALE 2018; 10:2275-2284. [PMID: 29260813 DOI: 10.1039/c7nr07095k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Exploiting solar power for hydrogen production from seawater is a great challenge owing to the corrosive properties of seawater and inadequate visible-light conversion capabilities. Here we report an uncomplicated post-processing method to construct Ti3+ self-doped titanium-silicon material with corrosion resistance. This is a new experimental method to regulate the electrical, optical, and photocatalytic performances of titanium-containing photocatalysts in a controlled way. Moreover, we demonstrate that Ti-O-Si materials with different calcination temperatures can serve as a highly efficient and convenient catalyst for photogeneration of hydrogen from water and simulated seawater. Consequently, the optimized Ti-O-Si (400) sample exhibits impressive enhancement in the photocatalytic hydrogen evolution performance, by nearly 10.0 and 43.1 times compared with TiO2 nanoparticles in water and simulated seawater. The Ti-O-Si (400) with substantial Ti3+ and oxygen vacancies exhibits an excellent photocatalytic H2 production performance due to the improved separation and transmission of the photogenerated electron-hole, the extended visible light response, and corrosion resistance. Our work opens a new door to engineering the intrinsic properties of the titanium-containing materials.
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Affiliation(s)
- Ting Song
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, P. R. China.
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43
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Zhou Y, Liu L, Wu T, Yuan G, Li J, Ding Q, Qi F, Zhu W, OuYang X, Wang Y. Flake-like InVO4 modified TiO2 nanofibers with longer carrier lifetimes for visible-light photocatalysts. RSC Adv 2018; 8:27073-27079. [PMID: 35539980 PMCID: PMC9083276 DOI: 10.1039/c8ra04344b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 07/23/2018] [Indexed: 11/21/2022] Open
Abstract
TiO2/InVO4 nanofibers have been designed and fabricated successfully by one-pot electrospinning process, which display longer carrier lifetime (22 ns) and enhanced visible-light photocatalytic activity.
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44
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Sun Y, Lin H, Wang C, Wu Q, Wang X, Yang M. Morphology-controlled synthesis of TiO2/MoS2 nanocomposites with enhanced visible-light photocatalytic activity. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00491e] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hollow and yolk–shell heterostructures of TiO2/MoS2 nanocomposites are synthesized via a polymer assisted targeted-etching method and show high photocatalytic activity under sunlight.
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Affiliation(s)
- Yuanqing Sun
- Institute of New Energy Technology
- Ningbo Institute of Industrial Technology
- Chinese Academy of Sciences
- Ningbo
- P. R. China
| | - Huihui Lin
- School of Chemical & Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Chuanxi Wang
- Institute of New Energy Technology
- Ningbo Institute of Industrial Technology
- Chinese Academy of Sciences
- Ningbo
- P. R. China
| | - Qian Wu
- School of Chemical & Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Xiaojie Wang
- School of Chemical & Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Minghui Yang
- Institute of New Energy Technology
- Ningbo Institute of Industrial Technology
- Chinese Academy of Sciences
- Ningbo
- P. R. China
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45
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Chen B, Meng Y, Sha J, Zhong C, Hu W, Zhao N. Preparation of MoS 2/TiO 2 based nanocomposites for photocatalysis and rechargeable batteries: progress, challenges, and perspective. NANOSCALE 2017; 10:34-68. [PMID: 29211094 DOI: 10.1039/c7nr07366f] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The rapidly increasing severity of the energy crisis and environmental degradation are stimulating the rapid development of photocatalysts and rechargeable lithium/sodium ion batteries. In particular, MoS2/TiO2 based nanocomposites show great potential and have been widely studied in the areas of both photocatalysis and rechargeable lithium/sodium ion batteries due to their superior combination properties. In addition to the low-cost, abundance, and high chemical stability of both MoS2 and TiO2, MoS2/TiO2 composites also show complementary advantages. These include the strong optical absorption of TiO2vs. the high catalytic activity of MoS2, which is promising for photocatalysis; and excellent safety and superior structural stability of TiO2vs. the high theoretic specific capacity and unique layered structure of MoS2, thus, these composites are exciting as anode materials. In this review, we first summarize the recent progress in MoS2/TiO2-based nanomaterials for applications in photocatalysis and rechargeable batteries. We highlight the synthesis, structure and mechanism of MoS2/TiO2-based nanomaterials. Then, advancements and strategies for improving the performance of these composites in photocatalytic degradation, hydrogen evolution, CO2 reduction, LIBs and SIBs are critically discussed. Finally, perspectives on existing challenges and probable opportunities for future exploration of MoS2/TiO2-based composites towards photocatalysis and rechargeable batteries are presented. We believe the present review would provide enriched information for a deeper understanding of MoS2/TiO2 composites and open avenues for the rational design of MoS2/TiO2 based composites for energy and environment-related applications.
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Affiliation(s)
- Biao Chen
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, PR China.
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46
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Rahmanian E, Malekfar R, Pumera M. Nanohybrids of Two-Dimensional Transition-Metal Dichalcogenides and Titanium Dioxide for Photocatalytic Applications. Chemistry 2017; 24:18-31. [DOI: 10.1002/chem.201703434] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Elham Rahmanian
- Division of Chemistry & Biological Chemistry; School of Physical and Mathematical Science; Nanyang Technological University; Singapore 637371 Singapore
| | - Rasoul Malekfar
- Physics Department, Faculty of Basic Sciences; Tarbiat Modares University, P.O. Box 14115-175; Tehran I. R. Iran
| | - Martin Pumera
- Division of Chemistry & Biological Chemistry; School of Physical and Mathematical Science; Nanyang Technological University; Singapore 637371 Singapore
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47
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Wang Q, Yu P, Bai L, Bao R, Wang N, Cheng C, Liu Z, Yang M, Yang W, Guo Z. Self-assembled nano-leaf/vein bionic structure of TiO 2/MoS 2 composites for photoelectric sensors. NANOSCALE 2017; 9:18194-18201. [PMID: 29159354 DOI: 10.1039/c7nr06902b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Inspired by the leaf/vein structure of leaves which effectively supports the photosynthesis of green plants, a nano-leaf/vein bionic structure of self-assembled TiO2/MoS2 composites is applied to induce the reversible photochromic reactions of methylene blue (MB) for the first time. This reversible photochromic phenomenon gives a novel performance for the TiO2/MoS2 composites and expands their applications. Similar to the case where the natural vein network in leaves ensures the efficient material transfer and energy exchange for photosynthesis, the bionic internal MoS2 vein network in the composites ensures the efficient separation and directional transfer of photo-generated carriers to restrain the photocatalytic degradation reactions and to enhance the reversible photochromic reactions. Furthermore, the photosensitive applications of the TiO2/MoS2/MB systems with such a self-assembled nano-leaf/vein bionic structure are discussed with two typical photoelectric sensory models for both controllers and detectors.
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Affiliation(s)
- Qianyu Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China.
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48
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Saha A, Sinhamahapatra A, Kang TH, Ghosh SC, Yu JS, Panda AB. Hydrogenated MoS 2 QD-TiO 2 heterojunction mediated efficient solar hydrogen production. NANOSCALE 2017; 9:17029-17036. [PMID: 29083007 DOI: 10.1039/c7nr06526d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Herein, we report the development of a hydrogenated MoS2 QD-TiO2 (HMT) heterojunction as an efficient photocatalytic system via a one-pot hydrothermal reaction followed by hydrogenation. This synthetic strategy facilitates the formation of MoS2 QDs with an enhanced band gap and a proper heterojunction between them and TiO2, which accelerates charge transfer process. Hydrogenation leads to oxygen vacancies in TiO2, enhancing the visible light absorption capacity through narrowing its band gap, and sulfur vacancies in MoS2, which enhance the active sites for hydrogen adsorption. Due to the band gap reduction of hydrogenated TiO2 and the band gap enhancement of the MoS2 QDs, the energy states are rearranged to create a reverse movement of electrons and holes facilitated the charge transfer process which enhance life-time of photo-generated charges. The photocatalyst showed stable, efficient and exceptionally high noble metal free sunlight-induced hydrogen production with a maximum rate of 3.1 mmol g-1 h-1. The developed synthetic strategy also provides flexibility towards the shape of the MoS2, e.g. QDs/single or few layers, on TiO2 and offers the opportunity to design novel visible light active photocatalysts for different applications.
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Affiliation(s)
- Arka Saha
- Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI) and CSMCRI- AcSIR, G. B. Marg, Bhavnagar-364002, Gujarat, India.
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49
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Li YY, Wang JH, Luo ZJ, Chen K, Cheng ZQ, Ma L, Ding SJ, Zhou L, Wang QQ. Plasmon-Enhanced Photoelectrochemical Current and Hydrogen Production of (MoS 2-TiO 2)/Au Hybrids. Sci Rep 2017; 7:7178. [PMID: 28775346 PMCID: PMC5543159 DOI: 10.1038/s41598-017-07601-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 06/27/2017] [Indexed: 11/17/2022] Open
Abstract
Three component hybrid (MoS2-TiO2)/Au substrate is fabricated by loading plasmonic Au nanorods on the MoS2 nanosheets coated TiO2 nanorod arrays. It is used for photoelectrochemical (PEC) cell and photocatalyst for hydrogen generation. Owing to the charge transfer between the MoS2-TiO2 hetero-structure, the PEC current density and hydrogen generation of TiO2 nanoarrays are enhanced 2.8 and 2.6 times. The broadband photochemical properties are further enhanced after Au nanorods loading. The plasmon resonance of Au nanorods provides more effective light-harvesting, induces hot-electron injection, and accelerates photo-excited charges separation. The results have suggested a route to construct nanohybrid by combining one-dimensional arrays and two-dimensional nanosheets, meanwhile have successfully utilized plasmonic nanorods as a sensitizer to improve the photochemical properties of the semiconductor nanocomposite.
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Affiliation(s)
- Ying-Ying Li
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
| | - Jia-Hong Wang
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China.,Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Zhi-Jun Luo
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
| | - Kai Chen
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China.,The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, P. R. China
| | - Zi-Qiang Cheng
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
| | - Liang Ma
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China
| | - Si-Jing Ding
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China.
| | - Li Zhou
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China.
| | - Qu-Quan Wang
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China. .,The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, P. R. China.
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50
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Yang L, Zheng X, Liu M, Luo S, Luo Y, Li G. Fast photoelectro-reduction of Cr VI over MoS 2@TiO 2 nanotubes on Ti wire. JOURNAL OF HAZARDOUS MATERIALS 2017; 329:230-240. [PMID: 28178638 DOI: 10.1016/j.jhazmat.2017.01.045] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 01/21/2017] [Accepted: 01/24/2017] [Indexed: 06/06/2023]
Abstract
A stable MoS2 nanosheets@TiO2 NTAs composite was prepared via a simple hydrothermal process. Few-layer MoS2 nanosheets distributed on the TiO2 nanotube top surface and the inner walls rather than filling in the tubes, allowing abundant tubular channels open to environment and benefiting for efficient mass transport. Photocatalytic (PE) and photoelectrocatalytic (PEC) performance of the composite were evaluated on CrVI reduction, with variable low molecule weight organic acids (LOAs) added as sacrificial electron donor to form a charge-transfer-complex (CTC) between LOAs and TiO2/MoS2, which is sensitive to the visible light illumination and could induce the photo-reduction of CrVI and photo-oxidation of LOAs. The overall trend of CrVI PEC rates are in the order as: L(+)-Tartaric acid>oxalic acid>citric acid>malic acid>amber acid, which is 103.9>62.5>31.2>21.6>2.5mg/Lmin-1cm-2, respectively. The improved catalytic performance and excellent stability of the composite can be attributed to the abundant active adsorption and reaction sites on MoS2 nanosheets and the formation of a heterojunction between TiO2 and MoS2. Moreover, the appropriate application of LOAs and voltage also have a great contribution to the utilization of sunlight and efficient separation of photogenerated carriers.
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Affiliation(s)
- Lixia Yang
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Xutong Zheng
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Ming Liu
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Shenglian Luo
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang 330063, PR China; College of Material Science and Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
| | - Yan Luo
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Guifa Li
- College of Material Science and Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
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