期刊
ULTRASONICS SONOCHEMISTRY
卷 36, 期 -, 页码 386-392出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultsonch.2016.12.014
关键词
Water splitting; Sonochemical; Photoactive; BiVO4 MAs; Photocurrent
资金
- National Plan for Science, Technology and Innovation (MAARIFAH) - King Abdulaziz City for Science and Technology - through the Science and Technology unit at King Fahd University of Petroleum and Minerals (KFUPM) - the Kingdom of Saudi Arabia [13-NAN1600-04]
Bismuth vanadate (BiVO4) is a well-known photocatalyst due to its lower bandgap (E-g) and visible electromagnetic light absorption capacity. Herein, we reported the pulse ultra-sonochemical assisted hydrothermal approach to synthesize S-BiVO4. For the comparison purpose, H-BiVO4 is also synthesized via conventional hydrothermal approach. The surface morphology of S-BiVO4 through scanning electron microscope (SEM) indicates condensed microarrays (MM) having pseudo-flower shapes. The energy dispersive X-rays (EDX) spectrum also confirmed the elemental percent composition of Bi, V and O in BiVO4. X-rays diffraction (XRD) pattern further confirmed the monoclinic scheelite phase of S-BiVO4. Fourier transformed infrared (FTIR) spectrum showed Bi-O and Bi-V-O vibrational bands at 1382 and 1630 cm(-1), respectively. The diffuse reflectance spectroscopy (DRS) indicated absorption edge at similar to 515 nm, corresponds to bandgap value (E-g) of 2.41 eV, which is suitable range for water splitting applications. The photocurrent density from water splitting under artificial 1 SUN visible light source found at 60 and 50 mu A/cm(2) for S-BiVO4 and H-BiVO4, respectively. The stability test through chronoamperometry showed that S-BiVO4 was more stable than H-BiVO4. It can be depicted from the growth mechanism that ultrasonication played a definite role in the overall synthesis of pseudo-flower shaped S-BiVO4 MM. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据