Template-free and surfactant-free synthesis of CeO2 nanodiscs with enhanced photocatalytic activity

被引：72

作者：

Choudhary, Shipra ^{[1
]}

Sahu, Kavita ^{[1
]}

Bisht, Aditi ^{[1
]}

Singhal, Rahul ^{[2
]}

Mohapatra, Satyabrata ^{[1
]}

机构：

[1] Guru Gobind Singh Indraprastha Univ, Univ Sch Basic & Appl Sci, New Delhi 110078, India

[2] Malaviya Natl Inst Technol Jaipur, JLN Marg, Jaipur 302017, Rajasthan, India

来源：

APPLIED SURFACE SCIENCE | 2020年 / 503卷

关键词：

CeO2; Nanodiscs; Photoluminescence; Photocatalysis; Pollutants; FACILE SYNTHESIS; ORGANIC-DYES; THIN-FILMS; DEGRADATION; OXIDE; NANOSTRUCTURES; NANOPARTICLES; TIO2; IRRADIATION; PERFORMANCE;

D O I：

10.1016/j.apsusc.2019.144102

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nanodiscs of ceria (CeO2) were prepared through a template-free and surfactant-free simple we chemical method and were well characterized by TEM, FESEM, XRD, XPS, Raman, photoluminescence (PL) and UV-vis spectroscopy. The effects of crystallite size on the optical response and photocatalytic performance of CeO2 nanodiscs were investigated. FESEM and TEM studies revealed that CeO2 nanodiscs are made up of CeO2 nanoparticles. XRD and Raman studies revealed crystallite size dependent variation in the lattice strain and disorder in the CeO2 nanodiscs with cubic fluorite structure. PL studies revealed higher concentration of CO3+ defects and oxygen vacancies in CeO2 nanodiscs with smaller crystallite size. CeO2 nanodiscs with crystallite size of 8.2 nm exhibited superior photocatalytic activities for solar degradation of MB, MG and MO. The mechanisms underlying formation of CeO2 nanodiscs and their enhanced photocatalytic response were tentatively proposed.

引用

页数：10

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