论文标题

在介电氧化物颗粒上的光催化中调节催化活性和选择性

Tuning Catalytic Activity and Selectivity in Photocatalysis on Dielectric Cuprous Oxide Particles

论文作者

Tirumala, Ravi Teja Addanki, Ramakrishnan, Sundaram Bhardwaj, Mohammadparast, Farshid, Andiappan, Marimuthu

论文摘要

染料降解已经在科学界已经有40多年了。所有这些研究主要集中于使用由光或热量驱动的催化剂破坏各种染料。在TiO2发现水分后,大多数研究开始专注于金属氧化物。在许多催化剂中,由于其特殊特性称为局部表面等离子体共振(LSPR),因此在最近使用的等离子金属纳米结构进行了探索。但是,面临多个热量损失和不稳定问题,人们开始专注于光子应用中的介电折射率材料。从物理学的角度研究了这些介电材料的大多数,而从化学的角度进行了更少的研究。在这项工作中,我们专注于如何通过进行甲基蓝(MB)染料降解来通过波长依赖性研究来调整选择性。

Dye degradation has been for more than forty years in the scientific community. All these studies have primarily focused on breaking various dyes using catalysts driven by either light or heat. Most studies started to focus on metal-oxides after the discovery of water-splitting by TiO2. Among the many catalysts used plasmonic metal nanostructures have been explored significantly in recent times due to their special property called localized surface plasmon resonances (LSPR). However, facing multiple problems of heat losses and instability, people started to focus on dielectric medium-to-high refractive indexed materials for photonic applications. Most of these dielectric materials have been studied from a physics point of view and less from chemistry. In this work, we have focused on how these materials can be used for tuning selectivity through wavelength-dependent studies by performing methylene blue (MB) dye degradation.

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