Investigation of methylene blue dye degradation using green synthesized mesoporous silver-titanium

Q1 Social Sciences South African Journal of Chemical Engineering Pub Date : 2024-10-01 DOI:10.1016/j.sajce.2024.09.012

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Abstract

In this study, we synthesized mesoporous silver-titanium (Ag/TiO₂) through green synthesis approach using mangosteen pericarp extract, which subsequently can act as both adsorbent and photocatalyst materials. Additionally, we investigated and compared the degradation of methylene blue (MB) using mesoporous Ag/TiO₂ under dark conditions, visible light irradiation, and both dark-light conditions to analyze the adsorption-photocatalysis activity. The achieved mesoporous structure in this study offers distinct advantages as an adsorbent. Moreover, the addition of silver (Ag) to titanium dioxide (TiO₂) shows promise in enhancing photocatalytic activity in MB degradation, which enhances photocatalytic activity in the visible light region due to its localized surface plasmon resonance (LSPR), which excites more electrons, resulting in increased MB degradation. The highest degradation percentage of 97.08 % was obtained using a dark-light degradation mechanism, demonstrating that the synthesized mesoporous Ag/TiO₂ has potential as an effective integrated adsorbent-photocatalyst material for MB dye degradation.

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利用绿色合成介孔银钛研究亚甲基蓝染料降解问题

在本研究中，我们利用山竹果皮提取物，通过绿色合成方法合成了介孔银钛（Ag/TiO2），随后将其用作吸附剂和光催化剂材料。此外，我们还研究并比较了介孔 Ag/TiO2 在黑暗条件、可见光照射以及黑暗和光照条件下降解亚甲基蓝（MB）的情况，以分析其吸附-光催化活性。本研究中获得的介孔结构具有明显的吸附剂优势。此外，在二氧化钛（TiO2）中添加银（Ag）有望提高降解甲基溴的光催化活性，由于银的局部表面等离子体共振（LSPR）可激发更多电子，从而提高甲基溴在可见光区域的光催化活性。利用暗光降解机制获得的最高降解率为 97.08%，表明合成的介孔 Ag/TiO2 有潜力成为降解甲基溴染料的有效吸附-光催化剂集成材料。

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来源期刊

South African Journal of Chemical Engineering Social Sciences-Education

CiteScore

8.40

自引率

0.00%

发文量

100

审稿时长

33 weeks

期刊介绍： The journal has a particular interest in publishing papers on the unique issues facing chemical engineering taking place in countries that are rich in resources but face specific technical and societal challenges, which require detailed knowledge of local conditions to address. Core topic areas are: Environmental process engineering • treatment and handling of waste and pollutants • the abatement of pollution, environmental process control • cleaner technologies • waste minimization • environmental chemical engineering • water treatment Reaction Engineering • modelling and simulation of reactors • transport phenomena within reacting systems • fluidization technology • reactor design Separation technologies • classic separations • novel separations Process and materials synthesis • novel synthesis of materials or processes, including but not limited to nanotechnology, ceramics, etc. Metallurgical process engineering and coal technology • novel developments related to the minerals beneficiation industry • coal technology Chemical engineering education • guides to good practice • novel approaches to learning • education beyond university.