Novel NiWO4 nanoberries morphology effect on photoelectrochemical properties

被引：20

作者：

Babu, Eadi Sunil ^{[1
]}

Rani, B. Jansi ^{[2
]}

Ravi, G. ^{[2
]}

Yuvakkumar, R. ^{[2
]}

Guduru, Ramesh K. ^{[3
]}

Ganesh, V. ^{[4
]}

Kim, Sungjin ^{[1
]}

机构：

[1] Kumoh Natl Inst Technol, Sch Adv Mat & Engn, 61 Daehak Ro, Gumi 39177, South Korea

[2] Alagappa Univ, Dept Phys, Nanomat Lab, Karaikkudi 630003, Tamil Nadu, India

[3] Lamar Univ, Dept Mech Engn, Beaumont, TX 77710 USA

[4] CSIR Cent Electrochem Res Inst CSIR CECRI, Electrod & Electrocatalysis EEC Div, Karaikkudi 630003, Tamil Nadu, India

来源：

MATERIALS LETTERS | 2018年 / 220卷

关键词：

NiWO4; Composite materials; Electron microscopy; Hydrothermal; Nanoberries; Photoelectrochemical; NANOCOMPOSITE;

D O I：

10.1016/j.matlet.2018.03.018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a novel method to synthesis NiWO4 nanoberries and their morphology dependent photoelectrochemical properties. XRD result revealed monoclinic wolframite NiWO4 structure formation. FESEM and TEM showed average particle and nanoberries size of 4 and 50 nm respectively. Raman active stretching W-O vibration mode at 889 cm(-1), PL blue green emission of intrinsic WO66- complex with double emission center (3T(1u)-1A(1g)) and FTIR spectrum confirmed NiWO4 formation with a calculated band gap of 2.86 eV. The much higher photocurrent of 0.03 mA/cm(2) was obtained at 0 V potential under visible light due to higher band gap (2.86 eV) of nanoberries morphology which led to efficient light absorption and increase in electron and hole separations. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：209 / 212

页数：4

共 25 条

[1] Synthesis of mesoporous NiWO4 nanocrystals for enhanced photoelectrochemical water oxidation [J].