Rational design of hyperbranched 3D heteroarrays of SrS/CdS: synthesis, characterization and evaluation of photocatalytic properties for efficient hydrogen generation and organic dye degradation

Nanoscale
Ziyauddin KhanMohammad Qureshi

Abstract

Hyperbranched 3D SrS/CdS nanostructures were synthesized using a one pot hydrothermal method. Transmission Electron Microscopy (TEM) and Field Emission-Scanning Electron Microscopy (FE-SEM) analysis showed the formation of flower-like structure and the crystalline phase was confirmed by powder X-ray diffraction. The prepared 3D SrS/CdS exhibited improved photocatalytic activity for water splitting leading to H(2) generation (AQY 10%) and nearly complete degradation of methyl orange (MO) dye. The dye degradation followed first order kinetics and the apparent reaction rate constant (k(app)) was 0.136 min(-1). The present 3D SrS/CdS structure promise to be efficient photocatalysts due to (i) the facile intersystem charge transfer resulting from their band alignment (ii) enhanced specific surface area and (iii) crystallinity.

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Citations

Jan 15, 2016·Physical Chemistry Chemical Physics : PCCP·Sajid Ali AnsariMoo Hwan Cho
Jun 17, 2015·Journal of Colloid and Interface Science·Jijiang HeShaobin Wang
Apr 28, 2017·Physical Chemistry Chemical Physics : PCCP·Anindya Sundar PatraMohammad Qureshi
Mar 11, 2020·Advanced Science·Ziyauddin KhanXavier Crispin
Sep 13, 2014·ACS Applied Materials & Interfaces·Hongqi SunShaobin Wang

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