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Mohd Raub AA, Bahru R, Mohamed MA, Latif R, Mohammad Haniff MAS, Simarani K, Yunas J. Photocatalytic activity enhancement of nanostructured metal-oxides photocatalyst: a review. NANOTECHNOLOGY 2024; 35:242004. [PMID: 38484390 DOI: 10.1088/1361-6528/ad33e8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/14/2024] [Indexed: 04/04/2024]
Abstract
Nanostructured metal oxide semiconductors have emerged as promising nanoscale photocatalysts due to their excellent photosensitivity, chemical stability, non-toxicity, and biocompatibility. Enhancing the photocatalytic activity of metal oxide is critical in improving their efficiency in radical ion production upon optical exposure for various applications. Therefore, this review paper provides an in-depth analysis of the photocatalytic activity of nanostructured metal oxides, including the photocatalytic mechanism, factors affecting the photocatalytic efficiency, and approaches taken to boost the photocatalytic performance through structure or material modifications. This paper also highlights an overview of the recent applications and discusses the recent advancement of ZnO-based nanocomposite as a promising photocatalytic material for environmental remediation, energy conversion, and biomedical applications.
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Affiliation(s)
- Aini Ayunni Mohd Raub
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | - Raihana Bahru
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | - Mohd Ambri Mohamed
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | - Rhonira Latif
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | | | - Khanom Simarani
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Kuala Lumpur, Malaysia
| | - Jumril Yunas
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
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Alim AA, Roslan R, Nadzirah S, Saidi LK, Menon PS, Aziah I, Chang Fu D, Sulaiman SA, Abdul Murad NA, Hamzah AA. Geometrical Characterisation of TiO 2-rGO Field-Effect Transistor as a Platform for Biosensing Applications. MICROMACHINES 2023; 14:1664. [PMID: 37763827 PMCID: PMC10536288 DOI: 10.3390/mi14091664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 09/29/2023]
Abstract
The performance of the graphene-based field-effect transistor (FET) as a biosensor is based on the output drain current (Id). In this work, the signal-to-noise ratio (SNR) was investigated to obtain a high-performance device that produces a higher Id value. Using the finite element method, a novel top-gate FET was developed in a three-dimensional (3D) simulation model with the titanium dioxide-reduced graphene oxide (TiO2-rGO) nanocomposite as the transducer material, which acts as a platform for biosensing application. Using the Taguchi mixed-level method in Minitab software (Version 16.1.1), eighteen 3D models were designed based on an orthogonal array L18 (6134), with five factors, and three and six levels. The parameters considered were the channel length, electrode length, electrode width, electrode thickness and electrode type. The device was fabricated using the conventional photolithography patterning technique and the metal lift-off method. The material was synthesised using the modified sol-gel method and spin-coated on top of the device. According to the results of the ANOVA, the channel length contributed the most, with 63.11%, indicating that it was the most significant factor in producing a higher Id value. The optimum condition for the highest Id value was at a channel length of 3 µm and an electrode size of 3 µm × 20 µm, with a thickness of 50 nm for the Ag electrode. The electrical measurement in both the simulation and experiment under optimal conditions showed a similar trend, and the difference between the curves was calculated to be 28.7%. Raman analyses were performed to validate the quality of TiO2-rGO.
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Affiliation(s)
- Anis Amirah Alim
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
| | - Roharsyafinaz Roslan
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
| | - Sh Nadzirah
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, Kangar 01000, Perlis, Malaysia
| | - Lina Khalida Saidi
- UKM Medical Molecular Biology Institute (UMBI), National University of Malaysia, Cheras 56000, Kuala Lumpur, Malaysia
| | - P Susthitha Menon
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
| | - Ismail Aziah
- Institute for Research in Molecular Medicine (INFORMM), Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Dee Chang Fu
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
| | - Siti Aishah Sulaiman
- UKM Medical Molecular Biology Institute (UMBI), National University of Malaysia, Cheras 56000, Kuala Lumpur, Malaysia
| | - Nor Azian Abdul Murad
- UKM Medical Molecular Biology Institute (UMBI), National University of Malaysia, Cheras 56000, Kuala Lumpur, Malaysia
| | - Azrul Azlan Hamzah
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
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Plasmonic core–shell nanoparticles of Ag@TiO2 for photocatalytic degradation of Rhodamine B. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02499-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Lim H, Yusuf M, Song S, Park S, Park KH. Efficient photocatalytic degradation of dyes using photo-deposited Ag nanoparticles on ZnO structures: simple morphological control of ZnO. RSC Adv 2021; 11:8709-8717. [PMID: 35423379 PMCID: PMC8695276 DOI: 10.1039/d0ra10945b] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/05/2021] [Indexed: 12/19/2022] Open
Abstract
In this work, morphology-controlled ZnO structures were prepared via a hydrothermal method by simple adjustments in the NaOH concentration. The NaOH concentration variation from 0.2 to 1.2 M resulted in the formation of ZnO structures in shapes such as walnut, spherical flower, flower, rod, and urchin-like. The extent of OH- ions is the main factor influencing the growth of ZnO structures. Well-defined morphologies, good crystallinity, and optical properties were obtained for all ZnO structures. Among these ZnO structures, ZnOsf (spherical flower-like) structure showed a greater percentage of photodegradation of methyl orange and rhodamine B dyes. Surface plasmon resonance was achieved by modifying the surface of ZnO with Ag nanoparticles. ZnOsf was loaded with Ag nanoparticles by a facile photo-deposition method. Ag-ZnOsf showed superior photoactivity and recyclability for the degradation of methyl orange and rhodamine B. Therefore, modification of different ZnO structures can help realize potential catalysts for future environmental applications.
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Affiliation(s)
- Hyeonhan Lim
- Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University Busan 46241 Republic of Korea
| | - Mohammad Yusuf
- Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University Busan 46241 Republic of Korea
| | - Sehwan Song
- Department of Physics, Pusan National University Busan 46241 Republic of Korea
| | - Sungkyun Park
- Department of Physics, Pusan National University Busan 46241 Republic of Korea
| | - Kang Hyun Park
- Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University Busan 46241 Republic of Korea
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Pouretedal HR, Bashiri Z, Nasiri M, Arab A. Photo-treatment of TNT wastewater in the presence of nanocomposite of WO3/Fe3O4. PARTICULATE SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1080/02726351.2021.1875521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Hamid Reza Pouretedal
- Faculty of Applied Sciences, Malek Ashtar University of Technology, Shahin Shahr, Iran
| | - Zahra Bashiri
- Faculty of Applied Sciences, Malek Ashtar University of Technology, Shahin Shahr, Iran
| | - Mohammad Nasiri
- Faculty of Applied Sciences, Malek Ashtar University of Technology, Shahin Shahr, Iran
| | - Ali Arab
- Faculty of Applied Sciences, Malek Ashtar University of Technology, Shahin Shahr, Iran
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Highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses. Sci Rep 2020; 10:8217. [PMID: 32427832 PMCID: PMC7237420 DOI: 10.1038/s41598-020-64773-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 04/22/2020] [Indexed: 12/12/2022] Open
Abstract
While there are conventional chemical synthesis methods to generate metal nanoclusters (NCs), many of them are adversely affected by the unavoidable contamination of the nanoproduct solution, resulting in aggregation, background noise in analytical chemistry, toxicity, and deactivation of the catalyst. In this work, physical method of ultrafast laser ablation as a "green" synthesis approach together with mechanical centrifugation to obtain silver NCs, simplifying widely the chemical synthesis requirements, is proposed. Remarkably, compared with conventional methods for synthesizing Ag NCs, this new approach starts with a colloid that contains nanosized particles as well as smaller species, managing to obtain colloids with few atoms NCs by centrifugation. Those colloids were analyzed by fluorescence spectroscopy observing UV bands corresponding with HOMO-LUMO cluster transitions. Besides, independent HRTEM measurements were made confirming the presence of few atoms Ag NCs, as well as small NPs in different formation stages. Equally important, photocatalytic efficiency of the obtained NCs was studied through degradation of Methylene Blue (MB) when it was mixed with as-prepared or highly centrifuged colloid, showing an enhanced photocatalytic efficiency of 79% as compared to 57% for pure MB after 180 min of illumination. Consequently, this work contributes to establishing a simple approach to synthesize highly fluorescent and photocatalytic NCs.
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Reza Moradi, Mahdi Hamidvand, Amin Ganjali. Using of TiO2/Ag2O Nanocomposite in Degradation of Acid Red 18 Dye in Photoreactor by Taguchi Experimental Design. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2019. [DOI: 10.1134/s0036024419060268] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mishra A, Butola BS. Silver‐Doped TiO
2
‐Coated Cotton Fabric as an Effective Photocatalytic System for Dye Decolorization in
UV
and Visible Light. Photochem Photobiol 2018; 95:522-531. [DOI: 10.1111/php.13009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/21/2018] [Indexed: 01/22/2023]
Affiliation(s)
- Anu Mishra
- Department of Textile Technology Indian Institute of Carpet Technology Bhadohi India
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Photocatalytic Treatment of An Actual Confectionery Wastewater Using Ag/TiO2/Fe2O3: Optimization of Photocatalytic Reactions Using Surface Response Methodology. Catalysts 2018. [DOI: 10.3390/catal8100409] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Titanium dioxide (TiO2) photocatalysis is one of the most commonly studied advanced oxidation processes (AOPs) for the mineralization of deleterious and recalcitrant compounds present in wastewater as it is stable, inexpensive, and effective. Out of all, doping with metal and non-metals, and the heterojunction with another semiconductor were proven to be efficient methods in enhancing the degradation of organic pollutants under ultraviolet (UV) and visible light. However, complex degradation processes in the treatment of an actual wastewater are difficult to model and optimize. In the present study, the application of a modified photocatalyst, Ag/TiO2/Fe2O3, for the degradation of an actual confectionery wastewater was investigated. Factorial studies and statistical design of experiments using the Box-Behnken method along with response surface methodology (RSM) were employed to identify the individual and cross-factor effects of independent parameters, including light wavelength (nm), photocatalyst concentration (g/L), initial pH, and initial total organic carbon (TOC) concentration (g/L). The maximum TOC removal at optimum conditions of light wavelength (254 nm), pH (4.68), photocatalyst dosage (480 mg/L), and initial TOC concentration (11,126.5 mg/L) was determined through the numerical optimization method (9.78%) and validated with experimental data (9.42%). Finally, the first-order rate constant with respect to TOC was found to be 0.0005 min−1 with a residual value of 0.998.
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Mishra A, Butola BS. Development of Cotton Fabrics with Durable UV Protective and Self-cleaning Property by Deposition of Low TiO2
Levels through Sol-gel Process. Photochem Photobiol 2018; 94:503-511. [DOI: 10.1111/php.12888] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 12/11/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Anu Mishra
- Department of Textile Technology; Indian Institute of Technology; Delhi India
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Saran S, Manjari G, Arunkumar P, Devipriya SP. Solar photocatalytic decolorization of synthetic dye solution using pilot scale slurry type falling film reactor. KOREAN J CHEM ENG 2017. [DOI: 10.1007/s11814-017-0204-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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