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

• Green synthesis of mesoporous silver-titanium using mangosteen pericarp extract. • 97.08 % degradation was achieved for degrade methylene blue. • Mesoporous silver-titanium has great potential for wastewater treatment. • The efficiency can be attributed to the porous morphology and plasmon effect. In this study, we synthesized mesoporous silver-titanium (Ag/TiO 2 ) 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/TiO 2 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 (TiO 2 ) 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/TiO 2 has potential as an effective integrated adsorbent-photocatalyst material for MB dye degradation.