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Batool SS, Saleem R, Khan RRM, Saeed Z, Pervaiz M, Summer M. Enhancing photocatalytic performance of zirconia-based nanoparticles: A comprehensive review of factors, doping strategies, and mechanisms. MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING 2024; 178:108419. [DOI: 10.1016/j.mssp.2024.108419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
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Abu N, Chinnathambi S, Kumar M, Etezadi F, Bakhori NM, Zubir ZA, Md Salleh SN, Shueb RH, Karthikeyan S, Thangavel V, Abdullah J, Pandian GN. Development of biomass waste-based carbon quantum dots and their potential application as non-toxic bioimaging agents. RSC Adv 2023; 13:28230-28249. [PMID: 37753403 PMCID: PMC10518661 DOI: 10.1039/d3ra05840a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 09/20/2023] [Indexed: 09/28/2023] Open
Abstract
Over recent years, carbon quantum dots (CQDs) have advanced significantly and gained substantial attention for their numerous benefits. These benefits include their simple preparation, cost-effectiveness, small size, biocompatibility, bright luminescence, and low cytotoxicity. As a result, they hold great potential for various fields, including bioimaging. A fascinating aspect of synthesizing CQDs is that it can be accomplished by using biomass waste as the precursor. Furthermore, the synthesis approach allows for control over the physicochemical characteristics. This paper unequivocally examines the production of CQDs from biomass waste and their indispensable application in bioimaging. The synthesis process involves a simple one-pot hydrothermal method that utilizes biomass waste as a carbon source, eliminating the need for expensive and toxic reagents. The resulting CQDs exhibit tunable fluorescence and excellent biocompatibility, making them suitable for bioimaging applications. The successful application of biomass-derived CQDs has been demonstrated through biological evaluation studies in various cell lines, including HeLa, Cardiomyocyte, and iPS, as well as in medaka fish eggs and larvae. Using biomass waste as a precursor for CQDs synthesis provides an environmentally friendly and sustainable alternative to traditional methods. The resulting CQDs have potential applications in various fields, including bioimaging.
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Affiliation(s)
- Norhidayah Abu
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus Kubang Kerian 16150 Kelantan Malaysia
- Advanced Materials Research Centre (AMREC), SIRIM Berhad Lot 34, Jalan Hi-Tech 2/3, Kulim, Hi-Tech Park 09000 Kulim Malaysia
| | - Shanmugavel Chinnathambi
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University Kyoto Japan
| | - Mahima Kumar
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University Kyoto Japan
| | - Fatemeh Etezadi
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University Kyoto Japan
| | - Noremylia Mohd Bakhori
- Advanced Materials Research Centre (AMREC), SIRIM Berhad Lot 34, Jalan Hi-Tech 2/3, Kulim, Hi-Tech Park 09000 Kulim Malaysia
| | - Zuhana Ahmad Zubir
- Advanced Materials Research Centre (AMREC), SIRIM Berhad Lot 34, Jalan Hi-Tech 2/3, Kulim, Hi-Tech Park 09000 Kulim Malaysia
| | - Shahrul Nizam Md Salleh
- Advanced Materials Research Centre (AMREC), SIRIM Berhad Lot 34, Jalan Hi-Tech 2/3, Kulim, Hi-Tech Park 09000 Kulim Malaysia
| | - Rafidah Hanim Shueb
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus Kubang Kerian 16150 Kelantan Malaysia
| | - Subramani Karthikeyan
- Centre for Healthcare Advancement, Innovation and Research, Vellore Institute of Technology Chennai 600 127 India
| | - Vaijayanthi Thangavel
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University Kyoto Japan
| | - Jaafar Abdullah
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM Serdang Serdang 43400 Selangor Malaysia
| | - Ganesh N Pandian
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University Kyoto Japan
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Lungu MV. Effects of Dopants and Processing Parameters on the Properties of ZnO-V 2O 5-Based Varistors Prepared by Powder Metallurgy: A Review. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16103725. [PMID: 37241352 DOI: 10.3390/ma16103725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/10/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023]
Abstract
This article reviews the progress in developing ZnO-V2O5-based metal oxide varistors (MOVs) using powder metallurgy (PM) techniques. The aim is to create new, advanced ceramic materials for MOVs with comparable or superior functional properties to ZnO-Bi2O3 varistors using fewer dopants. The survey emphasizes the importance of a homogeneous microstructure and desirable varistor properties, such as high nonlinearity (α), low leakage current density (JL), high energy absorption capability, reduced power loss, and stability for reliable MOVs. This study investigates the effect of V2O5 and MO additives on the microstructure, electrical and dielectric properties, and aging behavior of ZnO-based varistors. The findings show that MOVs with 0.25-2 mol.% V2O5 and MO additives sintered in air over 800 °C contain a primary phase of ZnO with a hexagonal wurtzite structure and several secondary phases that impact the MOV performance. The MO additives, such as Bi2O3, In2O3, Sb2O3, transition element oxides, and rare earth oxides, act as ZnO grain growth inhibitors and enhance the density, microstructure homogeneity, and nonlinearity. Refinement of the microstructure of MOVs and consolidation under appropriate PM conditions improve their electrical properties (JL ≤ 0.2 mA/cm2, α of 22-153) and stability. The review recommends further developing and investigating large-sized MOVs from the ZnO-V2O5 systems using these techniques.
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Affiliation(s)
- Magdalena Valentina Lungu
- Metallic, Composite and Polymeric Materials Department, National Institute for Research and Development in Electrical Engineering ICPE-CA, 030138 Bucharest, Romania
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