Nanosized Al/Cu-NiO catalyst: integrated adsorption-photocatalysis for fast removal of rhodamine B, reactive black 5 and chlorpyrifos waste

IF 3.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Sol-Gel Science and Technology Pub Date : 2024-06-13 DOI:10.1007/s10971-024-06447-0

Ali Moulahi

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Abstract

In this study, Al/Cu incorporated NiO nanostructures was acted as a new active photocatalyst for purification of wastewater. The efficient sol gel method was used to prepare pure and Al/Cu incorporated NiO samples with formula of NiO, Ni_0.95Al_0.03Cu_0.02O and Ni_0.93Al_0.03Cu_0.04O. The analysis of crystal structure verified the formation of cubic NiO structure for the different synthesized powders. The TEM images of pure and Al/Cu codoped NiO powders demonstrated the production of nanosized spherical particles have uniform size within 15–17 nm. The insertion of Al/Cu ions transferred the UV absorption edge of pure NiO nanopowder towards the direction of low energy (visible light side) which is very advantage for the photocatalytic applications. The catalyst with high concentration of Cu dopant (Ni_0.97Al_0.03Cu_0.04O) has shown fast removal activities for rhodamine b (RhB), and reactive black 5 (RB5) and chlorpyrifos contaminants with high degradation efficiency (94–98%) during 30 min of sunlight radiation. Besides, the catalyst exhibited a complete mineralization of RhB, RB5 and chlorpyrifos pollutants to CO₂ and H₂O with high stability for many cycles.

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纳米 Al/Cu-NiO 催化剂：快速去除罗丹明 B、活性黑 5 和毒死蜱废物的吸附-光催化一体化技术

本研究将铝/铜结合氧化镍纳米结构作为一种新的活性光催化剂，用于净化废水。该研究采用高效溶胶凝胶法制备了纯镍氧化物和铝/铜结合镍氧化物样品，其化学式分别为 NiO、Ni0.95Al0.03Cu0.02O 和 Ni0.93Al0.03Cu0.04O。晶体结构分析验证了不同合成粉末形成了立方氧化镍结构。纯镍氧化物粉末和铝/铜共掺镍氧化物粉末的 TEM 图像显示，生成的纳米级球形颗粒大小均匀，在 15-17 nm 之间。Al/Cu 离子的加入将纯 NiO 纳米粉体的紫外线吸收边缘向低能量方向（可见光侧）转移，这对光催化应用非常有利。高浓度铜掺杂的催化剂（Ni0.97Al0.03Cu0.04O）对罗丹明 b (RhB)、活性黑 5 (RB5) 和毒死蜱等污染物具有快速的去除活性，在 30 分钟的日光照射下具有很高的降解效率（94-98%）。此外，该催化剂还能将 RhB、RB5 和毒死蜱污染物完全矿化为 CO2 和 H2O，并在多个循环中保持高度稳定性。

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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.