Synthesis of amorphous CoSn(OH)6 nanocubes for photocatalytic reduction of 4-nitrophenol

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2024-08-19 DOI:10.1007/s10971-024-06508-4

Enlei Zhang, Jiaojiao Chen, Rui Xu, Xiaowen Song, Bengui Zhang, Guosheng Wang

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引用次数: 0

Abstract

Catalytic reduction of 4-nitrophenol (4-NP) into 4-aminophenol (4-AP) is an important method for treating toxic nitroaromatic pollutant. In this work, amorphous CoSn(OH)₆ nanocubes were synthesized by coprecipitation and calcination methods for 4-NP photocatalytic reduction. The crystal structure, morphology and optical property of the samples were characterized by XRD, SEM, TEM, XPS, and UV–vis DRS. The amorphous CoSn(OH)₆ nanocubes showed excellent photocatalytic performance in 4-NP reduction. The effects of catalyst dosage, 4-NP concentration, and sodium borohydride concentration on the conversion rate of 4-NP were investigated. The results showed that the conversion rate of 4-NP could reach 98.38% in 15 min at room temperature under visible light irradiation. After five cycles of experiments, the conversion rate of 4-NP remained above 90%, indicating the good catalytic stability of the amorphous CoSn(OH)₆ nanocubes. Finally, the mechanisms of photocatalytic reduction on amorphous CoSn(OH)₆ nanocubes are also discussed. The successful preparation of amorphous CoSn(OH)₆ nanocubes may enable the widespread use of amorphous polymetallic oxides for the removal of nitrophenols from wastewater in the future.

Graphical Abstract

Amorphous CoSn(OH)₆ nanocubes exhibit superior photocatalytic reduction 4-NP to 4-AP performance.

Abstract Image

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用于光催化还原 4-硝基苯酚的无定形 CoSn(OH)6 纳米管的合成

催化还原 4-硝基苯酚（4-NP）为 4-氨基苯酚（4-AP）是处理有毒硝基芳烃污染物的一种重要方法。本研究采用共沉淀法和煅烧法合成了无定形 CoSn(OH)6 纳米立方体，用于 4-NP 的光催化还原。通过 XRD、SEM、TEM、XPS 和 UV-vis DRS 对样品的晶体结构、形貌和光学性质进行了表征。无定形 CoSn(OH)6 纳米管在还原 4-NP 时表现出优异的光催化性能。研究了催化剂用量、4-NP 浓度和硼氢化钠浓度对 4-NP 转化率的影响。结果表明，在室温可见光照射下，15 分钟内 4-NP 的转化率可达 98.38%。经过五个周期的实验后，4-NP 的转化率仍保持在 90% 以上，表明无定形 CoSn(OH)6 纳米管具有良好的催化稳定性。最后，还讨论了非晶 CoSn(OH)6 纳米管的光催化还原机理。无定形 CoSn（OH）6 纳米立方体的成功制备可使无定形多金属氧化物在未来广泛用于去除废水中的硝基苯酚。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.