Combined influence of vanadium doping and rGO composite partnering on the photocatalytic ability of TiO2

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters Pub Date : 2024-11-23 DOI:10.1016/j.matlet.2024.137767

G.K. Kavi , B. Ravindran , K. Ravichandran , K. Thirumurugan , M. Varshini , S. Suvathi

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Abstract

Nowadays, the presence of noxious organic azo dye molecules in the industrial effluents is a pervasive and significant global concern as it severely affects both human and ecological well-being. In this context, vanadium-doped titanium oxide/reduced graphene oxide (TiO₂:V)/rGO nanocomposite was prepared using a soft-chemical method using Cassia fistula fruit pulp extract via green synthesis and its photocatalytic dye degradation ability was investigated against a cationic (Rhodamine-B (Rh-B)) and an anionic (Eosin Yellow (EY)) dye. The nanocomposite exhibits superior dye degrading efficiency of 95% and 97% for Rh-B and EY, respectively compared to TiO₂, TiO₂:V, and rGO. The structural, morphological and surface elemental composition results confirm the formation of the nanocomposite. This nanocomposite TiO₂:V/rGO can be used as a heterojunction photocatalyst for cost-effective dye waste removal and commercial dye detoxification processes.

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掺钒和 rGO 复合材料搭档对 TiO2 光催化能力的综合影响

如今，工业废水中存在的有毒有机偶氮染料分子已成为全球普遍关注的重大问题，因为它严重影响了人类和生态的健康。在此背景下，利用决明子果肉提取物，采用软化学方法，通过绿色合成制备了掺钒氧化钛/还原氧化石墨烯（TiO2:V）/rGO 纳米复合材料，并研究了其对阳离子（罗丹明-B（Rh-B））和阴离子（曙红黄（EY））染料的光催化降解能力。与 TiO2、TiO2:V 和 rGO 相比，该纳米复合材料对 Rh-B 和 EY 的染料降解效率分别高达 95% 和 97%。结构、形态和表面元素组成结果证实了纳米复合材料的形成。这种纳米复合材料 TiO2:V/rGO 可用作一种异质结光催化剂，用于具有成本效益的染料废物去除和商业染料解毒工艺。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive