Acta Chemica Malaysia

Journal: Acta Chemica Malaysia (ACMY)
Author:Huajun Yao, Ji Deng, Fangfang Xiao, Bo Ma, Maohui Li
ISSN: 2576-6732
e-ISSN: 2576-6724

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/acmy.01.2024.46.50

Heterostructure nanoparticles have excellent photoelectrochemical properties, because of the difference of heterostructure characteristics will greatly affect the performance of the play. Therefore, the selective growth of heterostructure nanoparticles is an important research content in the design and synthesis of advanced materials. In this thesis, the octahedral Cu2O crystal was used as the research object. By adjusting the reaction time and the kind and quantity of Surfactant, the nucleation and growth mode of Cu nanoparticles can be different. So that, Cu nanocrystals can be grown in situ at different positions such as the edges and faces of the octahedral Cu2O, and the Cu2O-Cu heterostructures with different spatial configurations were precisely constructed. The results showed that the content of Cu particles on the Cu2O surface also increased with the increase of reaction time. The addition of surfactant PVP hinders the in-situ growth of Cu nanoparticles on the Cu2O surface edge. The addition of CTAB can increase the particle size of Cu nanoparticles. And the addition of SDS can reduce the particle size of Cu nanoparticles while preferentially growing and aggregating on the octahedral Cu2O edge.

Journal: Acta Chemica Malaysia (ACMY)
Author:Y. A. Annaas
ISSN: 2576-6732
e-ISSN: 2576-6724

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/acmy.01.2024.39.45

Hydrogen, a clean and renewable energy source, is currently being researched and developed as a promising alternative to decarbonize the energy sector. It offers carbon-free fuel flexibility and energy storage for the global grid. There are various technologies for hydrogen production, including biological and photo-catalytic methods. This review paper discusses these technologies, their aspects, challenges and potential advancements. The reviewed work indicates that current biological hydrogen technologies generally have lower yields and conversion efficiencies and are only applicable to a minority of biomass materials. However, they are sustainable, environmentally friendly and operate at low temperatures. Similarly, photo-catalytic hydrogen technology is also environmentally friendly and sustainable, using natural sunlight and water to generate hydrogen with minimal greenhouse gas emissions. Nevertheless, its efficiency is still lower than other methods such as steam methane reforming and electrochemical electrolysis of water.

Journal: Acta Chemica Malaysia (ACMY)
Author:Nusrat Zahan, Shahriar Atik Fahim, Humayra Gazi, Md. Shakhawoat Hossain, Md. Ashraful Islam Molla
ISSN: 2576-6732
e-ISSN: 2576-6724

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/acmy.02.2024.92.96

Water pollution caused by textile dyes is a critical environmental issue, significantly impacting aquatic ecosystems and human health. Photocatalysis has emerged as a promising solution to this problem, using light to activate catalysts that degrade organic pollutants. Titanium dioxide (TiO2), in particular, is a widely used photocatalyst for its strong oxidative properties under UV light. This study explores the degradation of Rhodamine B (RhB), a common and persistent textile dye, using carbon-doped TiO2 (C-TiO2) photocatalysts under UV-C light. The impact of various operating parameters, such as pH, initial RhB concentration, photocatalyst amount, and irradiation time, has been investigated. The results showed that at a pH of 9, a dye concentration of 10 mg/L, a photocatalyst amount of 25 mg, and an irradiation time of 90 min, the 6% C-TiO2 achieved the highest photocatalytic RhB removal of 74% under UV-C light.