Structure and optical properties of Fe2TiO5/Ag/C nanocomposites as photocatalyst materials

Q1 Environmental Science Case Studies in Chemical and Environmental Engineering Pub Date : 2024-07-08 DOI:10.1016/j.cscee.2024.100846

Suci Aisyah Amaturrahim , Indah Revita Saragi , Crystina Simanjuntak , Saharman Gea , Boy Attaurrazaq

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Abstract

Photocatalysis has attracted attention, utilizing solar energy directly to catalyze chemical reactions. This research synthesized Fe₂TiO₅/Ag/C nanocomposites as photocatalyst material using a wet milling process and confirmed with comprehensive characterizations. Impregnation Ag/C produced crystal defects Fe₂TiO₅, resulting smoother amorphous surface with increased surface area and higher volume and size of pores. The optical properties of Fe₂TiO₅/Ag/C absorb light at 600 nm with a band gap of 2.04 eV and thus can be classified as semiconductor materials sensitivity in visible light. Finally, the Schottky barrier and surface plasmon resonance effect of Ag/C was proposed to describe the mechanism of the photocatalytic process on the Fe₂TiO₅/Ag/C.

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作为光催化剂材料的 Fe2TiO5/Ag/C 纳米复合材料的结构和光学特性

光催化技术直接利用太阳能催化化学反应，备受关注。本研究采用湿法研磨工艺合成了 Fe2TiO5/Ag/C 纳米复合材料作为光催化剂材料，并进行了全面的表征。浸渍 Ag/C 产生了晶体缺陷 Fe2TiO5，使其表面更加光滑，表面积增大，孔隙体积和尺寸增大。Fe2TiO5/Ag/C 的光学特性可吸收 600 纳米波长的光，带隙为 2.04 eV，因此可归类为对可见光敏感的半导体材料。最后，提出了 Ag/C 的肖特基势垒和表面等离子体共振效应来描述 Fe2TiO5/Ag/C 光催化过程的机理。

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