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Serbout W, Bensouici F, Meglali O, Iaiche S, Bououdina M, Bellucci S, Humayun M. Fabrication of ordered layered SnO 2/TiO 2 heterostructures and their photocatalytic performance for methyl blue degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:85792-85802. [PMID: 37392297 DOI: 10.1007/s11356-023-28451-7] [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: 04/07/2023] [Accepted: 06/22/2023] [Indexed: 07/03/2023]
Abstract
The rapid growth in population and industrialization has given rise to serious environmental issues, especially the water pollution. Photocatalysis with the assist of semiconductor photocatalysts has been considered as an advanced oxidation technique for degrading a variety of pollutants under solar irradiation. In this work, we have fabricated SnO2-TiO2 heterostructures with different ordered layers of SnO2 and TiO2 via the sol-gel dip-coating technique and utilized in photocatalysis for degradation of methyl blue dye under UV irradiation. The influence of the layer's position on SnO2 and TiO2 properties is investigated via the various techniques. The grazing incidence X-ray diffraction (GIXRD) analysis reveals that the as-prepared films exhibit pure anatase TiO2 and kesterite SnO2 phases. The 2SnO2/2TiO2 heterostructure exhibit the maximum crystallite size and smallest deviation from the ideal structure. Scanning electron microscopy cross-section images manifest good adhesion of the layers to each other and to the substrate. Fourier transform infrared spectroscopy reveals the characteristic vibration modes of SnO2 and TiO2 phases. UV-visible spectroscopy measurements indicate that all films exhibit high transparency (T = 80%) and the SnO2 film reveals a direct band gap of 3.6 eV, while the TiO2 film exhibits an indirect band gap of 2.9 eV. The optimal 2SnO2/2TiO2 heterostructure film revealed best photocatalytic degradation performance and the reaction rate constant for methylene blue solution under UV irradiation. This work will trigger the development of highly efficient heterostructure photocatalysts for environmental remediation.
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Affiliation(s)
- Walid Serbout
- Materials Science and Informatics Laboratory, Ziane Achour University, 17000, Djelfa, Algeria
| | - Fayçal Bensouici
- Laboratory of Structures, Properties and Intermolecular Interactions LASPI2A, Department of Matter, Abbes Laghrour University, 40.000, Khenchela, Algeria
| | - Omar Meglali
- Materials Science and Informatics Laboratory, Ziane Achour University, 17000, Djelfa, Algeria
- Faculty of Sciences, Mohammed Boudiaf University, M'Sila, 28000, Algeria
| | - Sabrina Iaiche
- Laboratory of Structures, Properties and Intermolecular Interactions LASPI2A, Department of Matter, Abbes Laghrour University, 40.000, Khenchela, Algeria
| | - Mohamed Bououdina
- Energy, Water, and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia
| | - Steffano Bellucci
- INFN-Laboratori Nazionali Di Frascati, Vie. E. Fermi 54, 00044, Frascati, Italy
| | - Muhammad Humayun
- Energy, Water, and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia.
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Nasri A, Jaleh B, Daneshnazar M, Varma RS. Sensing Properties of g-C 3N 4/Au Nanocomposite for Organic Vapor Detection. BIOSENSORS 2023; 13:315. [PMID: 36979527 PMCID: PMC10046684 DOI: 10.3390/bios13030315] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Alleviating the increasingly critical environmental pollution problems entails the sensing of volatile organic compounds (VOCs) as a hazardous factor for human health wherein the development of gas sensor platforms offers an efficient strategy to detect such noxious gases. Nanomaterials, particularly carbon-based nanocomposites, are desired sensing compounds for gas detection owing to their unique properties, namely a facile and affordable synthesis process, high surface area, great selectivity, and possibility of working at room temperature. To achieve that objective, g-C3N4 (graphitic carbon nitride) was prepared from urea deploying simple heating. The ensuing porous nanosheets of g-C3N4 were utilized as a substrate for loading Au nanoparticles, which were synthesized by the laser ablation method. g-C3N4 presented a sensing sensitivity toward organic vapors, namely methanol, ethanol, and acetone vapor gases, which were significantly augmented in the presence of Au nanoparticles. Specifically, the as-prepared nanocomposite performed well with regard to the sensing of methanol vapor gas and offers a unique strategy and highly promising sensing compound for electronic and electrochemical applications.
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Affiliation(s)
- Atefeh Nasri
- Department of Physics, Faculty of Science, Bu-Ali Sina University, Hamedan 65174, Iran
| | - Babak Jaleh
- Department of Physics, Faculty of Science, Bu-Ali Sina University, Hamedan 65174, Iran
| | - Milad Daneshnazar
- Department of Physics, Faculty of Science, Bu-Ali Sina University, Hamedan 65174, Iran
| | - Rajender S. Varma
- Institute for Nanomaterials, Advanced Technologies and Innovation (CxI), Technical University of Liberec (TUL), Studentska 1402/2, 46117 Liberec, Czech Republic
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Eshete M, Li X, Yang L, Wang X, Zhang J, Xie L, Deng L, Zhang G, Jiang J. Charge Steering in Heterojunction Photocatalysis: General Principles, Design, Construction, and Challenges. SMALL SCIENCE 2023. [DOI: 10.1002/smsc.202200041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Mesfin Eshete
- Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China Jinzhai Road 96 Hefei Anhui 230026 P. R. China
- Department of Industrial Chemistry College of Applied Sciences Nanotechnology Excellence Center Addis Ababa Science and Technology University P.O. Box 16417 Addis Ababa Ethiopia
| | - Xiyu Li
- Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China Jinzhai Road 96 Hefei Anhui 230026 P. R. China
| | - Li Yang
- Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China Jinzhai Road 96 Hefei Anhui 230026 P. R. China
| | - Xijun Wang
- Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China Jinzhai Road 96 Hefei Anhui 230026 P. R. China
| | - Jinxiao Zhang
- College of Chemistry and Bioengineering Guilin University of Technology 12 Jian'gan Road Guilin Guangxi 541004 P. R. China
| | - Liyan Xie
- A Key Laboratory of the- Ministry of Education for Advanced- Catalysis Materials Department of Chemistry Zhejiang Normal University Jinhua Zhejiang 321004 P. R. China
| | - Linjie Deng
- Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China Jinzhai Road 96 Hefei Anhui 230026 P. R. China
| | - Guozhen Zhang
- Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China Jinzhai Road 96 Hefei Anhui 230026 P. R. China
| | - Jun Jiang
- Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China Jinzhai Road 96 Hefei Anhui 230026 P. R. China
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Ajmal Z, Haq MU, Naciri Y, Djellabi R, Hassan N, Zaman S, Murtaza A, Kumar A, Al-Sehemi AG, Algarni H, Al-Hartomy OA, Dong R, Hayat A, Qadeer A. Recent advancement in conjugated polymers based photocatalytic technology for air pollutants abatement: Cases of CO 2, NO x, and VOCs. CHEMOSPHERE 2022; 308:136358. [PMID: 36087730 DOI: 10.1016/j.chemosphere.2022.136358] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
According to World Health Organization (WHO) survey, air pollution has become the major reason of several fatal diseases, which had led to the death of 7 million peoples around the globe. The 9 people out of 10 breathe air, which exceeds WHO recommendations. Several strategies are in practice to reduce the emission of pollutants into the air, and also strict industrial, scientific, and health recommendations to use sustainable green technologies to reduce the emission of contaminants into the air. Photocatalysis technology recently has been raised as a green technology to be in practice towards the removal of air pollutants. The scientific community has passed a long pathway to develop such technology from the material, and reactor points of view. Many classes of photoactive materials have been suggested to achieve such a target. In this context, the contribution of conjugated polymers (CPs), and their modification with some common inorganic semiconductors as novel photocatalysts, has never been addressed in literature till now for said application, and is critically evaluated in this review. As we know that CPs have unique characteristics compared to inorganic semiconductors, because of their conductivity, excellent light response, good sorption ability, better redox charge generation, and separation along with a delocalized π-electrons system. The advances in photocatalytic removal/reduction of three primary air-polluting compounds such as CO2, NOX, and VOCs using CPs based photocatalysts are discussed in detail. Furthermore, the synergetic effects, obtained in CPs after combining with inorganic semiconductors are also comprehensively summarized in this review. However, such a combined system, on to better charges generation and separation, may make the Adsorb & Shuttle process into action, wherein, CPs may play the sorbing area. And, we hope that, the critical discussion on the further enhancement of photoactivity and future recommendations will open the doors for up-to-date technology transfer in modern research.
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Affiliation(s)
- Zeeshan Ajmal
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xian, 710072, China; MoA Key Laboratory for Clean Production and Utilization of Renewable Energy, MoST National Center for International Research of BioEnergy Science and Technology, College of Engineering, China Agricultural University, Beijing, 100083, China
| | - Mahmood Ul Haq
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Yassine Naciri
- Laboratoire Matériaux et Environnement LME, Faculté des Sciences, Université Ibn Zohr, BP, Cité Dakhla, Agadir, 8106, Morocco
| | - Ridha Djellabi
- Department of Chemical Engineering, Universitat Rovira I Virgili, Tarragona, 43007, Spain.
| | - Noor Hassan
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, PR, 100081, China
| | - Shahid Zaman
- Key Laboratory of Energy Conversion and Storage Technologies, Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, PR China
| | - Adil Murtaza
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behaviour of Materials, Key Laboratory of Advanced Functional Materials and Mesoscopic Physics of Shaanxi Province, School of Physics, Xian Jiaotong University, Xian, Shaanxi, 710049, PR China
| | - Anuj Kumar
- Nanotechnology Laboratory, Department of Chemistry, GLA, University, Mathura, Uttar Pradesh, 281406, India
| | - Abdullah G Al-Sehemi
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia; Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Hamed Algarni
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia; Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Omar A Al-Hartomy
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - R Dong
- MoA Key Laboratory for Clean Production and Utilization of Renewable Energy, MoST National Center for International Research of BioEnergy Science and Technology, College of Engineering, China Agricultural University, Beijing, 100083, China
| | - Asif Hayat
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang, 321004, China; College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China.
| | - Abdul Qadeer
- State Key Laboratory of Environmental Criteria and Risk Assessment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
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Malik R, Joshi N, Tomer VK. Functional graphitic carbon (IV) nitride: A versatile sensing material. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214611] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Pachiyappan J, Nirmala G, Sivamani S, Govindasamy R, Thiruvengadam M, Derkho M, Burkov P, Popovich A, Gribkova V. Biogenic Synthesis, Characterization, and Photocatalytic Evaluation of Pristine and Graphene-Loaded Zn 50Mg 50O Nanocomposites for Organic Dyes Removal. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2809. [PMID: 36014674 PMCID: PMC9414630 DOI: 10.3390/nano12162809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Algal biomass synthesised nanocomposites have a higher surface area and reusability advantages. This study aimed to synthesise and characterise ZnMgO and silica-supported graphene with ZnMgO (G-ZnMgO) nanocomposites from Kappaphycusalvarezii and evaluate their potential in the application of photocatalysis to remove Rhodamine-B (RhB) and methylene blue (MB) dyes from their aqueous medium by maximising the percentage removal using response surface methodology (RSM) modelling. Nanocomposites were synthesised and characterised by biogenic and instrumental (Powder X-ray diffraction (P-XRD), electron microscopic analysis (SEM and TEM), Fourier transform infrared spectroscopy (FTIR), Energy dispersive analysis of X-rays (EDAX). and UV-visible diffuse reflectance spectroscopy (UV-DRS)) methods, respectively; modelling predicted the optimal conditions to be photocatalyst dosage and contact time of 1 g/L and 90 min, respectively, to obtain maximum MB dye removal of 80% using G-ZnMgO. The results showed the best fit between experimental and RSM predicted values. Thus, the obtained results conclude that the algal biomass synthesised nanocomposites were found to be one of the potential photocatalysts for the removal of RhB and MB dyes from their aqueous solution.
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Affiliation(s)
- Jayakaran Pachiyappan
- School of Chemical Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
- Engineering Department, University of Technology and Applied Sciences, Salalah 211, Oman
| | - Gnanasundaram Nirmala
- School of Chemical Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Selvaraju Sivamani
- Engineering Department, University of Technology and Applied Sciences, Salalah 211, Oman
| | - Rajakumar Govindasamy
- Department of Orthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai 600 077, Tamil Nadu, India
| | - Muthu Thiruvengadam
- Department of Applied Bioscience, College of Life and Environmental Science, Konkuk University, Seoul 05029, Korea
| | - Marina Derkho
- Institute of Veterinary Medicine, South-Urals State Agrarian University, 13 Gagarin St., Troitsk, 457100 Chelyabinsk, Russia
| | - Pavel Burkov
- Institute of Veterinary Medicine, South-Urals State Agrarian University, 13 Gagarin St., Troitsk, 457100 Chelyabinsk, Russia
| | - Aleksey Popovich
- Department of Scientific Research, K.G. Razumovsky Moscow State University of Technologies and Management (The First Cossack University), 73 Zemlyanoy Val, 109004 Moscow, Russia
| | - Vera Gribkova
- Department of Scientific Research, K.G. Razumovsky Moscow State University of Technologies and Management (The First Cossack University), 73 Zemlyanoy Val, 109004 Moscow, Russia
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Joshi N, Pransu G, Adam Conte-Junior C. Critical review and recent advances of 2D materials-Based gas sensors for food spoilage detection. Crit Rev Food Sci Nutr 2022; 63:10536-10559. [PMID: 35647714 DOI: 10.1080/10408398.2022.2078950] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Many people around the world are concerned about meat safety and quality, which has resulted in the ongoing advancement of packaged food technology. Since the emergence of graphene in 2004, the number of studies on layered two-dimensional materials (2DMs) for applications ranging from food packaging to meat quality monitoring has been expanding quickly. Recently, scientists have been working hard to develop a novel class of 2DMs that keep the good things about graphene but don't have zero bandgaps at room temperature. Much work has been done on layered transition metal dichalcogenides (TMDCs) like different metal sulfides and selenides for meat spoilage gas sensors. This review looks at (i) the main indicators of meat spoilage and (ii) the detection methods that can be used to find out if meat has been spoiled, such as chemiresistive, electrochemical, and optical methods. (iii) the role of 2DMs in meat spoilage detection and (iv) the emergence of advanced methods for selective classification of target analytes in meat/food spoilage detection in recent years. Thus, this review demonstrates the potential scope of 2DMs for developing intelligent sensor systems for food and meat spoilage detection with high viability, simplicity, cost-effectiveness, and other multipurpose tools.
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Affiliation(s)
- Nirav Joshi
- Physics Department, Federal University of ABC, Campus Santo André, Brazil
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Gaurav Pransu
- Graphene Research Labs, Manchappanahosahalli, Karnataka, India
| | - Carlos Adam Conte-Junior
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Nanotechnology Network, Carlos Chagas Filho Research Support Foundation of the State of Rio de Janeiro (FAPERJ), Rio de Janeiro, Brazil
- Post-Graduation Program of Chemistry (PGQu), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil
- Post-Graduation Program of Veterinary Hygiene (PPGHV) Faculty of Veterinary Medicine, Fluminense Federal University (UFF), Niterói, Brazil
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Van Pham V, Tran HH, Truong TK, Cao TM. Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:96-113. [PMID: 35116216 PMCID: PMC8790863 DOI: 10.3762/bjnano.13.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/30/2021] [Indexed: 05/05/2023]
Abstract
Semiconducting SnO2 photocatalyst nanomaterials are extensively used in energy and environmental research because of their outstanding physical and chemical properties. In recent years, nitrogen oxide (NO x ) pollutants have received particular attention from the scientific community. The photocatalytic NO x oxidation will be an important contribution to mitigate climate change in the future. Existing review papers mainly focus on applying SnO2 materials for photocatalytic oxidation of pollutants in the water, while studies on the decomposition of gas pollutants are still being developed. In addition, previous studies have shown that the photocatalytic activity regarding NO x decomposition of SnO2 and other materials depends on many factors, such as physical structure and band energies, surface and defect states, and morphology. Recent studies have been focused on the modification of properties of SnO2 to increase the photocatalytic efficiency of SnO2, including bandgap engineering, defect regulation, surface engineering, heterojunction construction, and using co-catalysts, which will be thoroughly highlighted in this review.
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Affiliation(s)
- Viet Van Pham
- Photocatalysis Research Group (PRG), Faculty of Materials Science and Technology, University of Science, VNU–HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, 700000, Viet Nam
| | - Hong-Huy Tran
- Photocatalysis Research Group (PRG), Faculty of Materials Science and Technology, University of Science, VNU–HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, 700000, Viet Nam
| | - Thao Kim Truong
- Photocatalysis Research Group (PRG), Faculty of Materials Science and Technology, University of Science, VNU–HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, 700000, Viet Nam
| | - Thi Minh Cao
- HUTECH University, 475A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City, 700000, Viet Nam
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Light-Excited Ag-Doped TiO 2-CoFe 2O 4 Heterojunction Applied to Toluene Gas Detection. NANOMATERIALS 2021; 11:nano11123261. [PMID: 34947609 PMCID: PMC8704540 DOI: 10.3390/nano11123261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 11/17/2022]
Abstract
(1) Background: Toluene gas is widely used in indoor decoration and industrial production, and it not only pollutes the environment but also poses serious health risks. (2) Methods: In this work, TiO2−CoFe2O4−Ag quaternary composite gas-sensing material was prepared using a hydrothermal method to detect toluene. (3) Results: The recombination of electron–hole pairs was suppressed, and the light absorption range was expanded after constructing a heterojunction and doping with Ag, according to ultraviolet–visible (UV–vis) diffuse reflectance spectra and photoluminescence spectroscopy. Moreover, in the detection range of toluene gas (3 ppm–50 ppm), the response value of TiO2−CoFe2O4−Ag increased from 2 to 15, which was much higher than that of TiO2−Ag (1.7) and CoFe2O4−Ag (1.7). In addition, the working temperature was reduced from 360 °C to 263 °C. Furthermore, its response/recovery time was 40 s/51 s, its limit of detection was as low as 10 ppb, and its response value to toluene gas was 3–7 times greater than that of other interfering gases under the same test conditions. In addition, the response value to 5 ppm toluene was increased from 3 to 5.5 with the UV wavelength of 395 nm–405 nm. (4) Conclusions: This is primarily due to charge flow caused by heterojunction construction, as well as metal sensitization and chemical sensitization of novel metal doping. This work is a good starting point for improving gas-sensing capabilities for the detection of toluene gas.
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Gonçalves RA, Toledo RP, Joshi N, Berengue OM. Green Synthesis and Applications of ZnO and TiO 2 Nanostructures. Molecules 2021; 26:2236. [PMID: 33924397 PMCID: PMC8068979 DOI: 10.3390/molecules26082236] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/30/2021] [Accepted: 04/09/2021] [Indexed: 12/19/2022] Open
Abstract
Over the last two decades, oxide nanostructures have been continuously evaluated and used in many technological applications. The advancement of the controlled synthesis approach to design desired morphology is a fundamental key to the discipline of material science and nanotechnology. These nanostructures can be prepared via different physical and chemical methods; however, a green and ecofriendly synthesis approach is a promising way to produce these nanostructures with desired properties with less risk of hazardous chemicals. In this regard, ZnO and TiO2 nanostructures are prominent candidates for various applications. Moreover, they are more efficient, non-toxic, and cost-effective. This review mainly focuses on the recent state-of-the-art advancements in the green synthesis approach for ZnO and TiO2 nanostructures and their applications. The first section summarizes the green synthesis approach to synthesize ZnO and TiO2 nanostructures via different routes such as solvothermal, hydrothermal, co-precipitation, and sol-gel using biological systems that are based on the principles of green chemistry. The second section demonstrates the application of ZnO and TiO2 nanostructures. The review also discusses the problems and future perspectives of green synthesis methods and the related issues posed and overlooked by the scientific community on the green approach to nanostructure oxides.
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Affiliation(s)
- Rosana A. Gonçalves
- Department of Physics, School of Engineering, São Paulo State University (UNESP), Guaratinguetá, Sao Paulo 12516-410, Brazil; (R.A.G.); (R.P.T.)
| | - Rosimara P. Toledo
- Department of Physics, School of Engineering, São Paulo State University (UNESP), Guaratinguetá, Sao Paulo 12516-410, Brazil; (R.A.G.); (R.P.T.)
| | - Nirav Joshi
- São Carlos Institute of Physics, University of São Paulo, 369, São Carlos, Sao Paulo 13560-970, Brazil
| | - Olivia M. Berengue
- Department of Physics, School of Engineering, São Paulo State University (UNESP), Guaratinguetá, Sao Paulo 12516-410, Brazil; (R.A.G.); (R.P.T.)
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Lin Z, Shen W, Roux JC, Xi H. Photo-catalytic degradation of mixed gaseous HCHO and C 6H 6 in paper mills: Experimental and theoretical study on the adsorption behavior simulation and catalytic reaction mechanism. JOURNAL OF HAZARDOUS MATERIALS 2020; 388:121779. [PMID: 31848097 DOI: 10.1016/j.jhazmat.2019.121779] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/08/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
VOCs in paper mills have severely exceeded the emission standards and their photo-catalytic degradations should focus on the experimental and theoretical studies. This work used TiO2 colloid as catalyst to study the photo-catalytic degradations of mixed HCHO and C6H6 at five mixing ratios. The adsorption behaviors of pure forms and mixtures on the TiO2 (101) surface were simulated using density functional theory (DFT), and their catalytic reaction mechanisms were also analyzed. The following results were found: (1) With increasing initial concentration, the enhanced adsorption and easy degradation interpreted the increased degradation rate for pure HCHO, while the counteractions of enhanced adsorption and inhibited catalytic reaction kept the constant degradation rate for pure C6H6. (2) For their mixtures, the HCHO degradation was inhibited at high C6H6 concentration due to the inhibited adsorption and catalytic reaction of HCHO. The C6H6 degradation was slightly weakened at high HCHO concentration and then restored to the normal degradation rate of C6H6, which could be attributed to the weakened adsorption of C6H6 and the easy degradation of HCHO in the initial stage. The combined experimental, simulation, and theoretical results provides sufficient information to understand the photo-catalytic degradation process for mixed gaseous pollutants in different realistic environments.
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Affiliation(s)
- Zhifeng Lin
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Wenhao Shen
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China; State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, PR China.
| | - Jean-Claude Roux
- Laboratory of Pulp and Paper Science and Graphic Arts, Grenoble Institute of Technology - Pagora, 461 Rue de la papeterie, 38400 Saint-Martin d'Hères, France
| | - Hongxia Xi
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, PR China
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Chang Y, Han W, Cui S, Cai A. Cellulose-inspired synthesis of hierarchically nanostructured TiO2 with high photocatalytic activity. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137249] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Basheer EAM, Abdulbari HA. Visible Light TiO 2Photocatalyst Composite Based on Carbon Microfiber Derived from Human Hair. ChemistrySelect 2018. [DOI: 10.1002/slct.201801161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Esmail A. M. Basheer
- Faculty of Chemical & Natural Resources Engineering; Universiti Malaysia Pahang; Lebuhraya Tun Razak 26300 Gambang Kuantan Pahang Malaysia
| | - Hayder A. Abdulbari
- Faculty of Chemical & Natural Resources Engineering; Universiti Malaysia Pahang; Lebuhraya Tun Razak 26300 Gambang Kuantan Pahang Malaysia
- Centre of Excellence for Advanced Research in Fluid Flow (CARIFF); Universiti Malaysia Pahang; Lebuhraya Tun Razak 26300 Gambang Kuantan Pahang Malaysia
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14
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Malik R, Tomer VK, Joshi N. Au-TiO 2-Loaded Cubic g-C 3N 4 Nanohybrids for Photocatalytic and Volatile Organic Amine Sensing Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:34087-34097. [PMID: 30198254 DOI: 10.1021/acsami.8b08091] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A green and efficient approach for efficient nanohybrid photocatalysts in extending the light response to the visible spectrum is a hot research topic in sustainable energy technologies. In this work, novel Au-TiO2@m-CN nanocomposite was synthesized using hard template of cubic ordered mesoporous KIT-6 via the nanocasting process. The as-prepared Au-TiO2@m-CN nanohybrids exhibit enhanced photocatalytic activities with improved stability and reusability using methyl orange dye. The enhanced photocatalytic performance is a result of the conjugated effect of catalytic active Au and TiO2 nanoparticles supported on highly efficient visible light sensitizer, graphitic carbon nitride (m-CN or g-C3N4), and ordered mesoporous morphology. Besides, the sensing performance of Au-TiO2@m-CN nanohybrids was also tested for the detection of amine gases, wherein a significant response was reported for triethylamine at low operating temperatures. This study reveals a simple and scalable methodology to design and develop next generation of layered mesoporous materials for multifunctional applications.
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Affiliation(s)
- Ritu Malik
- Synthesis & Real Structure Group, Institute for Materials Science , Kiel University , 24143 Kiel , Germany
| | - Vijay K Tomer
- Berkeley Sensor & Actuator Center (BSAC) , University of California Berkeley , Berkeley , California 94720 , United States
| | - Nirav Joshi
- Berkeley Sensor & Actuator Center (BSAC) , University of California Berkeley , Berkeley , California 94720 , United States
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15
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Li X, Lu X, Qi H, Yu K, Zhang Z. Mesoporous Spherical TiO
2
with Outstanding Photocatalysis under Visible Light. ChemistrySelect 2018. [DOI: 10.1002/slct.201800256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiangji Li
- Key Laboratory of Automobile MaterialsMinistry of Educationand College of Materials Science and EngineeringJilin University Changchun 130022 China
- Roll Forging Institute of Jilin University Changchun 130022 China
| | - Xiangkun Lu
- Key Laboratory of Automobile MaterialsMinistry of Educationand College of Materials Science and EngineeringJilin University Changchun 130022 China
- Roll Forging Institute of Jilin University Changchun 130022 China
| | - Hui Qi
- The Second Hospital of Jilin University Changchun 130041 China
| | - Kaifeng Yu
- Key Laboratory of Automobile MaterialsMinistry of Educationand College of Materials Science and EngineeringJilin University Changchun 130022 China
| | - Zhiqiang Zhang
- Key Laboratory of Automobile MaterialsMinistry of Educationand College of Materials Science and EngineeringJilin University Changchun 130022 China
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16
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Pourjavadi PA, Keshavarzi N, Moghaddam FM, Hosseini SH. Magnetic Nanocomposite of Cross-Linked Melamine Groups Decorated with Large Amounts of Gold NPs: Reduction of Nitro Compounds and Suzuki-Miyaura Coupling Reactions in Aqueous Media. ChemistrySelect 2018. [DOI: 10.1002/slct.201702798] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Porf. Ali Pourjavadi
- Polymer Research Laboratory; Department of Chemistry; Sharif University of Technology; Tehran Iran
| | - Nahid Keshavarzi
- Polymer Research Laboratory; Department of Chemistry; Sharif University of Technology; Tehran Iran
| | - Firouz Matloubi Moghaddam
- Laboratory of Organic Synthesis and Natural Products; Department of Chemistry; Sharif University of Technology; Tehran Iran
| | - Seyed Hassan Hosseini
- Department of Chemical Engineering; University of Science and Technology of Mazandaran; Behshahr Iran
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17
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Shaikh T, Rathore A, Kaur H. Poly (Lactic Acid) Grafting of TiO2Nanoparticles : A Shift in Dye Degradation Performance of TiO2from UV to Solar Light. ChemistrySelect 2017. [DOI: 10.1002/slct.201701560] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tauhid Shaikh
- Department of Chemistry, School of Sciences; Gujarat University; Ahmedabad India
| | - Anuradha Rathore
- Department of Chemistry, School of Sciences; Gujarat University; Ahmedabad India
| | - Harjinder Kaur
- Department of Chemistry, School of Sciences; Gujarat University; Ahmedabad India
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18
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Tomer V, Malik R, Kailasam K. Near-Room-Temperature Ethanol Detection Using Ag-Loaded Mesoporous Carbon Nitrides. ACS OMEGA 2017; 2:3658-3668. [PMID: 31457680 PMCID: PMC6641218 DOI: 10.1021/acsomega.7b00479] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 06/07/2017] [Indexed: 05/14/2023]
Abstract
Development of room-temperature gas sensors is a much sought-after aspect that has fostered research in realizing new two-dimensional materials with high surface area for rapid response and low-ppm detection of volatile organic compounds (VOCs). Herein, a fast-response and low-ppm ethanol gas sensor operating at near room temperature has been fabricated successfully by utilizing cubic mesoporous graphitic carbon nitride (g-CN, commonly known as g-C3N4), synthesized through template inversion of mesoporous silica, KIT-6. Upon exposure to 50 ppm ethanol at 250 °C, the optimized Ag/g-CN showed a significantly higher response (R a/R g = 49.2), fast response (11.5 s), and full recovery within 7 s in air. Results of sensing tests conducted at 40 °C show that the sensor exhibits not only a highly selective response to 50 ppm (R a/R g = 1.3) and 100 ppm (R a/R g = 3.2) of ethanol gas but also highly reversible and rapid response and recovery along with long-term stability. This outstanding response is due to its easily accessible three-dimensional mesoporous structure with higher surface area and unique planar morphology of Ag/g-CN. This study could provide new avenues for the design of next-generation room-temperature VOC sensors for effective and efficient monitoring of alarming concern over indoor environment.
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Affiliation(s)
- Vijay
K. Tomer
- Institute
of Nano Science and Technology (INST), Mohali, Punjab 160062, India
| | - Ritu Malik
- Department
of Applied Physics, Mahavir Swami Institute
of Technology, Sonepat, Haryana 131001, India
| | - Kamalakannan Kailasam
- Institute
of Nano Science and Technology (INST), Mohali, Punjab 160062, India
- E-mail: ,
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19
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Zhou L, Wang L, Zhang J, Lei J, Liu Y. The preparation, and applications of g-C3N4/TiO2 heterojunction catalysts—a review. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2748-8] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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