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A Facile Synthetic Approach for Cu(OH)2-Cu2O Heterostructure: A Stable Catalyst for Pollutant Degradation
Transactions of the Indian Ceramic Society ( IF 1.5 ) Pub Date : 2021-06-17 , DOI: 10.1080/0371750x.2021.1904289
Revathi Kottappara 1 , Shajesh Palantavida 2 , Baiju Kizhakkekilikoodayil Vijayan 1
Affiliation  

In the present study, we report the development of morphologically different copper and Cu(OH)2-Cu2O nanostructures by a single step chemical reduction method using ascorbic acid as environmental friendly reducing agent. Morphology and crystallographic patterns of the synthesized samples were analyzed using X-ray diffraction and scanning electron microscopy. Determination of catalytic performance of both copper and Cu(OH)2-Cu2O nanostructure towards hydrogenation reduction of para nitrophenol and para nitroaniline using sodium borohydride as the reducing agent suggested that Cu(OH)2-Cu2O nanostructure is comparatively efficient in hydrogenating the nitro aromatic compounds. The improved hydrogenation capacity was suggested to be due to the formation of an in-situ composite of Cu2O-Cu during the time of reduction reaction. Analysis on the degradation capacity of developed samples for methyl orange degradation using sodium borohydride as the reducing agent indicated significantly high reduction rate for Cu(OH)2-Cu2O nanostructure with a rate constant value of 0. 819 min-1, which is higher than many of the previously reported values.



中文翻译:

Cu(OH)2-Cu2O异质结构的简便合成方法:一种稳定的污染物降解催化剂

在本研究中,我们报告了通过使用抗坏血酸作为环保还原剂​​的一步化学还原方法开发形态不同的铜和 Cu(OH) 2 -Cu 2 O 纳米结构。使用 X 射线衍射和扫描电子显微镜分析合成样品的形态和晶体图案。铜和Cu(OH) 2 -Cu 2 O纳米结构对使用硼氢化钠作为还原剂加氢还原对硝基苯酚和对硝基苯胺的催化性能的测定表明Cu(OH) 2 -Cu 2O 纳米结构在氢化硝基芳族化合物方面相对有效。加氢能力的提高被认为是由于在还原反应期间形成了 Cu 2 O-Cu的原位复合物。对以硼氢化钠为还原剂的甲基橙降解开发样品的降解能力分析表明,Cu(OH) 2 -Cu 2 O纳米结构具有显着的高还原率,速率常数值为0. 819 min -1,即高于许多先前报告的值。

更新日期:2021-06-29
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