Mg-doped ZnO nanoparticles for efficient sunlight-driven photocatalysis

ACS Applied Materials & Interfaces
Vinodkumar EtacheriVishwanathan Kumar

Abstract

Magnesium-doped ZnO (ZMO) nanoparticles were synthesized through an oxalate coprecipitation method. Crystallization of ZMO upon thermal decomposition of the oxalate precursors was investigated using differential scanning calorimetry (DSC) and X-ray diffraction (XRD) techniques. XRD studies point toward a significant c-axis compression and reduced crystallite sizes for ZMO samples in contrast to undoped ZnO, which was further confirmed by HRSEM studies. X-ray photoelectron spectroscopy (XPS), UV/vis spectroscopy and photoluminescence (PL) spectroscopy were employed to establish the electronic and optical properties of these nanoparticles. (XPS) studies confirmed the substitution of Zn(2+) by Mg(2+), crystallization of MgO secondary phase, and increased Zn-O bond strengths in Mg-doped ZnO samples. Textural properties of these ZMO samples obtained at various calcination temperatures were superior in comparison to the undoped ZnO. In addition to this, ZMO samples exhibited a blue-shift in the near band edge photoluminescence (PL) emission, decrease of PL intensities and superior sunlight-induced photocatalytic decomposition of methylene blue in contrast to undoped ZnO. The most active photocatalyst 0.1-MgZnO obtained after calcinat...Continue Reading

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Citations

Feb 6, 2013·ACS Applied Materials & Interfaces·Vinodkumar EtacheriSuresh C Pillai
Jan 15, 2014·Nanoscale Research Letters·Devulapalli Amaranatha ReddyChunli Liu
May 17, 2014·Physical Chemistry Chemical Physics : PCCP·Sini KuriakoseSatyabrata Mohapatra
Sep 5, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Gowra Raghupathy DillipMoo Hwan Cho
Aug 10, 2015·Journal of Colloid and Interface Science·Xiao-Yan ZhangXiao-Hong Yang
Jul 1, 2015·Chemical Communications : Chem Comm·Enrico Della GasperaAnthony S R Chesman
May 6, 2015·ACS Applied Materials & Interfaces·Robert L Z HoyeJudith L MacManus-Driscoll
Apr 22, 2015·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·G PoongodiR Jayavel
May 9, 2016·Journal of Colloid and Interface Science·Rajni VermaAvanish K Srivastava
Jun 22, 2016·Scientific Reports·Peisheng LiuHaibo Zeng
Mar 7, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Yakup AykutSaad A Khan
Oct 30, 2016·ACS Applied Materials & Interfaces·Marco SturaroAlessandro Martucci
Apr 20, 2017·Physical Chemistry Chemical Physics : PCCP·Ge GaoJingwei Xu
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May 9, 2014·ACS Applied Materials & Interfaces·Pei-Nan NiDe-Zhen Shen

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