Výsledky vyhledávání - "Kuan Ying Kok"

Akademický článek

Comparative Evaluation of Antibacterial Efficacy of Biological Synthesis of ZnO Nanoparticles Using Fresh Leaf Extract and Fresh Stem-Bark of Carica papaya

Autor: Droepenu Eric Kwabena, Boon Siong Wee, Chin Suk Fun, Kuan Ying Kok, Zaini Bin Assim, Asare Ebenezer Aquisman

Publikováno v: Nano Biomedicine and Engineering, Vol 11, Iss 3, Pp 264-271 (2019)

The study compared the antibacterial activity of synthesized ZnO nanoparticles (NPs) from fresh leaf and fresh stem bark aqueous extracts of Carica papaya against five selected microbes: Staphylococcus aureus, (Gram positive (+ve)), Escherichia coli

Externí odkaz: https://doaj.org/article/0a78433f2c8d4bb59441e6bb7a31c7b8

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Akademický článek

Synthesis and Characterization of Zinc Oxide Nanoparticles with Small Particle Size Distribution

Autor: Nuraqeelah Mohammad Shamhari, Boon Siong Wee, Suk Fun Chin, Kuan Ying Kok

Publikováno v: Acta Chimica Slovenica, Vol 65, Iss 3, Pp 578-585 (2018)

Solvothermal synthesis has shown to have a great potential to synthesize Zinc Oxide nanoparticles (ZnO NPs) with less than 10 nm size. In this study, we present a rapid synthesis of ZnO NPs in which ZnO NPs with more uniform shape and highly disperse

Externí odkaz: https://doaj.org/article/73c29ff6369c428da6c59e15985f33e7

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Akademický článek

Effect of Iron Loading on the Catalytic Activity of Fe/N-Doped Reduced Graphene Oxide Catalysts via Irradiation

Autor: Kazi Rumanna Rahman, Kuan Ying Kok, Wai Yin Wong, Hsiharng Yang, Kean Long Lim

Publikováno v: Applied Sciences, Vol 11, Iss 1, p 205 (2020)

The aim of this study is to produce noble-metal-free oxygen reduction reaction (ORR) catalyst via irradiation. Gamma ray irradiation reduction has been utilized to produce N-doped reduced graphene oxide (rGO)-supported iron (Fe)-based catalysts, whos

Externí odkaz: https://doaj.org/article/f6da5d4d488f4abdb4daa9cf6e63f4cf

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Akademický článek

Effect of Temperature on Morphology, Phase Transformations and Thermal Expansions of Coal Fly Ash Cenospheres

Autor: Thye Foo Choo, Mohamad Amran Mohd Salleh, Kuan Ying Kok, Khamirul Amin Matori, Suraya Abdul Rashid

Publikováno v: Crystals, Vol 10, Iss 6, p 481 (2020)

Cenospheres are small, hard-shelled hollow spheres with high silica and alumina content. These micron-sized aluminosilicate hollow spheres constitute only a small percentage of the coal fly ash (CFA) obtained from the coal combustion processes. In th

Externí odkaz: https://doaj.org/article/f6e51b13556146a3b95242ad011317f4

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Akademický článek

Characterization of High-Temperature Hierarchical Porous Mullite Washcoat Synthesized Using Aluminum Dross and Coal Fly Ash

Autor: Thye Foo Choo, Mohamad Amran Mohd Salleh, Kuan Ying Kok, Khamirul Amin Matori, Suraya Abdul Rashid

Publikováno v: Crystals, Vol 10, Iss 3, p 178 (2020)

Mixture of aluminum dross (AD) and coal fly ash (CFA) was used to produce high-temperature porous mullite for washcoat application. CFA is the combustion by-product of pulverized coal in a coal-fired power plant, while AD is a waste product produced

Externí odkaz: https://doaj.org/article/977d35a9955d4c7385743f17f60b6ce1

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Akademický článek

Hydrogen sensing enhancement of zinc oxide nanorods via voltage biasing

Autor: Thye Foo Choo, Nur Ubaidah Saidin, Kuan Ying Kok

Publikováno v: Royal Society Open Science, Vol 5, Iss 5 (2018)

The capability of zinc oxide (ZnO) as a hydrogen sensing element has been pushed to its limits. Different methods have been explored to extend its sensing capability. In this paper, we report a novel approach which significantly improves the hydrogen

Externí odkaz: https://doaj.org/article/132df304d9494fd2af2ad83ee33ed8e9

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Akademický článek

A Review on Synthesis of Mullite Ceramics from Industrial Wastes

Autor: Thye Foo Choo, Mohamad Amran Mohd Salleh, Kuan Ying Kok, Khamirul Amin Matori

Publikováno v: Recycling, Vol 4, Iss 3, Pp 39-0 (2019)

Some industrial wastes are shown to be useful in the production of mullite ceramics. These industrial wastes are rich in certain metal oxides such as silica (SiO2) and alumina (Al2O3). This gives wastes the potential to be used as a starting material

Externí odkaz: https://doaj.org/article/26c817d7367748c49dea405456f8cee2

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Variation of Alkali Concentration and Temperature: Its Effect on the Morphology of ZnO Nanoparticles Synthesized via Solvothermal Technique

Autor: Eric Kwabena Droepenu, Kuan Ying Kok, Boon Siong Wee, Suk Fun Chin, Woei Ting

Publikováno v: Defect and Diffusion Forum. 411:3-15

This study reports on synthesis of ZnO nanostructures using Zinc chloride (ZnCl2) as precursors and Potassium hydroxide (KOH) as alkaline source in a solvothermal process with varying molar concentrations (Zn2+/OH-) of 1:1, 1:3 and 1:5 for temperatur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a47bf1a43cb52b38a4c478bf07e5cf64
https://doi.org/10.4028/www.scientific.net/ddf.411.3

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Sorption of Coated and Uncoated Nanocrystalline Zinc Oxide from Aqueous Solutions onto Raw and Acetylated Cellulose Sago Hampas: Equilibrium, Kinetic and Thermodynamic Studies

Autor: Eric Kwabena Droepenu, Kuan Ying Kok, Suk Fun Chin, Boon Siong Wee

Publikováno v: Defect and Diffusion Forum. 411:37-54

In this study, sorption efficiency of coated (C-) and uncoated (U-) zinc oxide nanoparticles (ZnO-NPs) in aqueous solution onto raw sago hampas (RSH) and acetylated sago hampas (ACSH) was studied. Physical and chemical characteristics of both the sor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::76c5953463d7b6d7ce42f707d622058b
https://doi.org/10.4028/www.scientific.net/ddf.411.37

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