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Ordered mesoporous La–Co–Ce–O3 through nanocasting: an effective catalyst for the photodegradation of phenol
Journal of Experimental Nanoscience ( IF 2.6 ) Pub Date : 2020-05-07 , DOI: 10.1080/17458080.2020.1755034
Menggentuya Bao 1 , Yang Guiping 2 , Jia Meilin 2 , Wang Jiang 2
Affiliation  

Abstract

The design of highly active photocatalysts for degradation of phenol can be particularly challenging for solar energy utilisation. Herein, a series of mesoporousLaCo1−xCexO3catalysts have been synthesised and studied for degradation of phenol under UV irradiation. Compared with LaCoO3-SG catalyst which is formed through sol-gel method, optimised LaCo1−xCexO3-NC prepared by nanocasting method showed remarkably higher activity for the degradation of phenol due to the higher specific surface area, and the order of degradation rates is LaCo0.85Ce0.15O3-NC > LaCoO3-NC > LaCoO3-SG. Moreover, Au/LaCo1−xCexO3 catalysts were synthesized via Au deposition–precipitation method, and the catalytic activity for photodegradation of phenol increased with the loading of Au on the support.



中文翻译:

通过纳米浇铸订购有孔介孔的La–Co–Ce–O3:有效降解苯酚的催化剂

摘要

用于降解苯酚的高活性光催化剂的设计对于太阳能利用而言尤其具有挑战性。在此,已经合成了一系列介孔LaCo 1-x Ce x O 3催化剂,并研究了其在紫外线照射下对苯酚的降解作用。与通过溶胶-凝胶法形成的LaCoO 3 -SG催化剂相比,通过纳米浇铸法制备的优化的LaCo 1-x Ce x O 3 -NC具有较高的比表面积,并且具有较高的降解苯酚的活性。降解速率的顺序为LaCo 0.85 Ce 0.15 O 3 -NC> LaCoO 3-NC> LaCoO 3 -SG。此外,通过Au沉积-沉淀法合成了Au / LaCo 1-x CexO 3催化剂,随着载体上负载Au,苯酚的光催化降解活性增加。

更新日期:2020-05-07
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