Acta Chemica Malaysia

Journal: Acta Chemica Malaysia (ACMY)
Author: Md. Arif Hossen, Nurashikin Yaacof, Azrina Abd Aziz, Wu Lihua
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.01.2023.08.15

TiO2 nanotubes (TNTs) have drawn special attention for their wide range of applications in a variety of fields. In comparison to other TiO2 nanostructures, it is attracted much due to its high surface area and low fabrication cost. By using the electrochemical anodization approach, highly ordered TNT arrays can be produced with minimum cost compared to other synthesized methods. The nanotubes of the desired diameter, length and wall thickness can be tailored by adjusting anodization parameters. Here in this article, the effects of anodization parameters including type of electrolytes, electrolyte concentration, pH, temperature, aging, anodization voltage, time and type of electrodes on tube formation, tube diameters, length, thickness, organization, and formation mechanisms are reviewed. The collection methods of as-produced TNTs from Ti substrate also summarized in this review. Finally, the article concludes by outlining potential future research scope and challenges.

Journal: Acta Chemica Malaysia (ACMY)
Author: Sollomy Ainomujuni, Peter Okidi Lating, Adam Sebbit
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.01.2023.01.07

The processing of water hyacinth is one of the predominant energy sources for bioethanol and briquette production, however, its technological development in developing countries is still limited. This study investigated the physico-chemical properties of water hyacinth as well as the energy characteristics of bioethanol and briquettes. Fresh water hyacinth samples were collected and analysed for lignin, cellulose, hemicellulose, dry matter, ash content, organic matter and organic carbon contents. Bioethanol was produced through acid (0.5 M), alkali (0.5 M) and yeast saccharification (20g) pretreatment, followed by fermentation and distillation of crude ferment. Bioethanol was analysed for brix, pH, percent yield and calorific value. Briquettes were produced by drying freshwater hyacinth, carbonizing and compacting of biochar with cassava starch, anthill soil and cow dung binders. The briquette quality was determined using proximate and ultimate analysis. The physical-chemical analysis results for lignin content, cellulose content, hemicellulose, dry matter, ash content, organic matter and organic carbon percentage contents were 20.20%, 24.63%, 27.87%, 15.13%, 3.80%, 96.63% and 96.35% respectively. The percentage bio-ethanol yields were 29.5 % acid hydrolysed ferment, 18% alkali hydrolysed ferment and 20.5 % enzyme hydrolysed ferment. The calorific values of bioethanol and briquette samples of cassava starch, anthill soil, cow dung and no binder were 26.4 MJ/kg and 8.061 MJ/kg, 2.076 MJ/kg 9.034 MJ/kg, 7.174 MJ/kg respectively. It was concluded that bioethanol produced from water hyacinth was of good quality and fit for use as a cooking fuel. The briquettes produced using cow dung and cassava starch binder exhibited higher heating values compared to those of anthill soil binder and no binder; therefore, they can be used as an alternative to traditional fuels.

Journal: Acta Chemica Malaysia (ACMY)
Author: Hassan Keypour, Jamal Kouhdareh, Sedigheh Alavinia, Ammar Maryamabadi
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.02.2022.100.105

Metal-organic frameworks (MOFs) are a class of Coordination polymer of metal ions or clusters coordinated to organic ligands to form which has nanometer cavities. In the category porous materials, they have domination of great surface areas, tunable pore size and structure, tunable combination and functionalized surface area and porous size, ability to encapsulate and post-synthesis which enables them unique advantages important point concerning the possible use of such functional materials for applications in adsorption and release of drug and active pharmaceutical ingredient. By examining the patterns resulting from N2 adsorption/desorption isotherms and thermogravimetric analysis, it is possible to understand the thermal stability and the appropriate volume of holes available to the molecule for the presence of guest molecules. In this report, we study uptake and release properties of Oxaliplatin from nano Co (II)-MOF in comparison with bulk Co(II)-MOF. To explore the absorption ability of the Co (II)-MOF to Oxaliplatin, a fresh sample of Co-BTC metal-organic framework was immersed in an aqueous solution of Oxaliplatin and was
monitored in real-time with HPLC spectroscopy. Results show that the adsorbed quantity of Oxaliplatin over Nano Co-BTC metal-organic framework is much higher than those over a bulk Co-BTC. According to the Oxaliplatin adsorption times, the time is 22 h, the uptake of Oxaliplatin (99.94%) on Nano Co-BTC is remarkable and clarity exceeds that of bulk Co-BTC and activated carbon in the aqueous solution of Oxaliplatin. When these interactions disappear with increasing Oxaliplatin extrusion, labor in the second stage is largely governed by a free-diffusion process, and full Oxaliplatin release from Nano Co-BTC takes more than 5 days to reach equilibrium.