Silver vanadate-coupled zinc oxide nanocrystals: Solution-based synthesis and sustainable photoreduction of nitrobenzene to aniline under visible light

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-01-09 DOI:10.1016/j.mseb.2025.117990

Aliyah K. Alshamrani , Ahmed Shawky

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Abstract

Visible light-activated photocatalyst represents a sustainable and eco-friendly technique for several redox reactions. Particularly, selective organic transformation using semiconductor photocatalysts is one of the hottest applications for many industries. Aniline (AN) is a well-known organic substance in such fields. In this study, a polymeric surfactant-aided growth of zinc oxide (ZnO) nanostructures followed by incorporation of 3.0–12.0 wt% of silver vanadate (AgVO₃) nanoparticles is performed to produce visible light active nanocomposite photocatalysts. The prepared materials exposed a significant absorbance of visible light irradiation with mesoporous textures. The 9.0 wt% AgVO₃-supported ZnO has demonstrated a substantial reduction of its bandgap down to 2.7 eV compared to 3.1 eV in the pure ZnO. This advanced photocatalyst is applied for efficient photoconversion of AN by the photoreduction of nitrobenzene (NB) under visible light. The use of 2.0 mg mL⁻¹ dose of 9.0 wt% AgVO₃/ZnO can completely convert NB into AN within only 45 min at a reaction rate of 111.05 × 10⁻³ min⁻¹. This optimized photocatalyst also indicates a sustainable regeneration five times with a promised 93.6 % of its original performance. The improved electron-hole separation, as well as the migration, are the key factors for the best performance as well as revealed from the detailed depictions.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.