Facile Preparation and Enhanced Visible-Light Photocatalysis of ZnO Arrays@BiOI Nanosheets Heterostructures

A simple two-step method of growing ZnO nanorod arrays on the surface of BiOI nanosheets was developed under mild environment. The hierarchical structure of ZnO arrays@BiOI nanosheets was characterized by various measurements like X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray detector. The optical absorption of the ZnO arrays@BiOI nanosheets composite was investigated by UV-Vis diffuse reflectance spectra. The photocatalytic degradation of methanol orange under visible light shows that the obtained ZnO arrays@BiOI nanosheets heterostructures exhibit enhanced photocatalytic activity, contrasting to the sum of BiOI nanosheets and ZnO nanorods. The mechanism of the photocatalytic process was discussed. This method of growing ZnO nanorod arrays on other nanosheets also provides a potential method to fabricating other complex structures.

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Complete surface coverage of ZnO nanorod arrays by pulsed electrodeposited CuInS2 for visible light energy conversion

Dalton Transactions ◽

10.1039/c5dt00429b ◽

2015 ◽

Vol 44 (16) ◽

pp. 7127-7130 ◽

Cited By ~ 11

Author(s):

Yiming Tang ◽

Jung-Ho Yun ◽

Lianzhou Wang ◽

Rose Amal ◽

Yun Hau Ng

Keyword(s):

Charge Transfer ◽

Visible Light ◽

Surface Coverage ◽

Zno Nanorods ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Photoelectrochemical Performance ◽

Pulsed Electrodeposition ◽

Light Energy Conversion

Photosensitized ZnO nanorods uniformly coated with CuInS2 nanoparticles from sequentially pulsed-electrodeposition yielded superior charge transfer ability and great enhancement in photoelectrochemical performance under visible light irradiation.

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Frequency-regulated pulsed electrodeposition of CuInS2 on ZnO nanorod arrays as visible light photoanodes

Journal of Materials Chemistry A ◽

10.1039/c5ta03255e ◽

2015 ◽

Vol 3 (31) ◽

pp. 15876-15881 ◽

Cited By ~ 24

Author(s):

Yiming Tang ◽

Peng Wang ◽

Jung-Ho Yun ◽

Rose Amal ◽

Yun Hau Ng

Keyword(s):

Visible Light ◽

Zno Nanorods ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

High Quality ◽

Electrodeposition Method ◽

Vertically Aligned ◽

Pulsed Electrodeposition

High quality coating of vertically aligned ZnO nanorods with CuInS2 nanoparticles is achieved by a pulse-regulated electrodeposition method.

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Effects of Growth Time on Morphologies of ZnO Nanorod Arrays

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.421.324 ◽

2013 ◽

Vol 421 ◽

pp. 324-328

Author(s):

Kang Zhao ◽

Zhi Ming Wu ◽

Rong Tang

Keyword(s):

Zno Nanorods ◽

Length Distribution ◽

Growth Time ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

X Ray Diffraction ◽

X Ray ◽

Si Substrates ◽

Seed Layers

well-aligned ZnO nanorod arrays (ZNRAs) grown on the ZnO seed layers coated p-silicon (p-Si) substrates in various times from 1.5 to 5 hr have been fabricated from aqueous solutions at low temperature. Morphologies, crystalline structure and optical transmission were investigated by a scanning electron microscope (SEM) and X-ray diffraction (XRD), respectively. The results showed that ZNRAs grew vertically from the substrates, having uniform thickness and length distribution, the average diameters and length of ZnO nanorods increased with increasing growth time below 3 hr. The XRD results showed that ZnO nanorods were wurtzite-structured (hexagonal) ZnO.

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Synthesis and Sensing Properties of N-doped ZnO Nanorod Arrays on Quartz

MRS Proceedings ◽

10.1557/proc-1253-k05-29 ◽

2010 ◽

Vol 1253 ◽

Author(s):

Boqian Yang ◽

Xiaoyan Peng ◽

Hongxin Zhang ◽

Peterxian Feng ◽

Marc Achermann

Keyword(s):

Photoelectron Spectroscopy ◽

Zno Nanorods ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

X Ray ◽

Doped Zno ◽

High Concentrations ◽

Diffraction Patterns ◽

Raman Scattering Spectra

AbstractUsing different pressures of nitrogen, N-doped ZnO nanorod arrays of various densities have been synthesized on quartz substrates by pulsed laser deposition techniques. The nanorods grow preferentially perpendicular to the quartz surface. X-ray diffraction patterns revealed some degradation of the crystal structure at elevated nitrogen pressures. High concentrations of nitrogen doping in ZnO nanorods were estimated by X-ray photoelectron spectroscopy. Raman scattering spectra confirmed the wurtzite structure of N-doped ZnO nanorods. A prototype sensor based on the N-doped ZnO nanorod arrays demonstrates a linear dependence of the conductivity with operating temperature and pressure of a test gas pollutant.

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Synthesis of ZnO Nanorod Arrays on Chaleted Sol-Gel-Derived ZnO Thin Films and its Optical Absorption in Visible-Light Region

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.750-752.253 ◽

2013 ◽

Vol 750-752 ◽

pp. 253-258

Author(s):

Li Rong Yang ◽

Jun Cong Wei ◽

Li Zhang ◽

Hai Bin Chen

Keyword(s):

Thin Films ◽

Visible Light ◽

Sol Gel ◽

Zno Nanorods ◽

Zno Thin Films ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Practical Applications ◽

Absorbance Spectra

Well-aligned ZnO nanorod arrays on Chaleted Sol-Gel-Derived ZnO thin films was achieved at a temperature of 90°C by a surfactant-assisted soft chemical approach. The nanorod arrays were characterized by XRD, SEM, XPS, and UV-Vis absorbance spectra. The ZnO nanorod arrays are wurtzite crystal stuctures preferentially orienting in the direction of the c-axis and ZnO nanorods are grown verticallyon the substrate. The XPS analysis shows the Zn:O ratio of ZnO nanorod arrays near is 1:1. The UV-Vis absorbance spectra indicate that ZnO nanorod arrays have absorption of visible-light as well as ultraviolet-light. Therefore, the ZnO nanorods may be good candidates for visible-light photocatalysis materials from the viewpoint of practical applications.

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Controllable Synthesis of ZnO Nanorod Arrays via Simple Solution-Based Method

MRS Proceedings ◽

10.1557/proc-0957-k07-20 ◽

2006 ◽

Vol 957 ◽

Author(s):

Patcharee Charoensirithavorn ◽

Susumu Yoshikawa

Keyword(s):

Transparent Conducting Oxide ◽

Zno Nanorods ◽

Solution Temperature ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

X Ray Diffraction ◽

X Ray ◽

Glass Substrates ◽

Transparent Conducting

ABSTRACTHere we present a convenient solution-based method, which can afford a procedure to easily fabricate highly oriented ZnO nanorods on substrate at relatively low temperatures. The as-synthesized products have been characterized by scanning electron microscopy (SEM) and X-Ray diffraction (XRD). The results revealed that a densely packed and perpendicularly oriented single-crystalline ZnO nanorod arrays grew vertically on the fluorine-doped SnO2 transparent conducting oxide (FTO) glass substrates. In addition, we found that the length of the nanorod could be freely modified by controlling the solution temperature.

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Effect of Time Conditions on the Growth of ZnO Nanorods via Hydrothermal Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.895.509 ◽

2014 ◽

Vol 895 ◽

pp. 509-512 ◽

Cited By ~ 1

Author(s):

N.A. Nik Aziz ◽

M.I.N. Isa ◽

Hasiah Salleh

Keyword(s):

Hydrothermal Method ◽

Zno Nanorods ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

X Ray Diffraction ◽

X Ray ◽

Wurtzite Crystal Structure ◽

Ito Glass ◽

Xrd Patterns

In this study, ZnO nanorod arrays were fabricated using a hydrothermal method on ITO glass substrate. We can find that the dimension of ZnO nanorod will changes with different growth temperature. X-ray diffraction (XRD) patterns show that the nanorods are high-quality crystals growing along [00 direction with a high consistent orientation perpendicular to the substrate and it is also revealed that nanorods have wurtzite crystal structure. The diameter of ZnO nanorods were 100300 nm depending on the time of growth process. The surface morphology of ZnO nanorods were analyse using Scanning Electron Microscope (SEM).

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Facile Synthesis of a Porous ZnO Nanorod Array with Enhanced Photocatalysis for Photoelectrochemical Water Splitting Application

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.17411 ◽

2020 ◽

Vol 20 (6) ◽

pp. 3512-3518

Author(s):

Saleh Khan ◽

Xiao-He Liu ◽

Xi Jiang ◽

Qing-Yun Chen

Keyword(s):

Annealing Temperature ◽

Zno Nanorods ◽

Nanorod Array ◽

Photocurrent Density ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Irradiation Intensity ◽

Heat Treated ◽

Positive Effect

Highly efficient and effective porous ZnO nanorod arrays were fabricated by annealing ZnO nanorod arrays grown on a substrate using a simple hydrothermal method. The annealing had a positive effect on the nanorod morphology, structure and optical properties. The porosity was closely related to the annealing temperature. After heating at 450 °C, pores appeared on the nanorods. It was demonstrated that the porosity could be exploited to improve the visible light absorption of ZnO and reduce the bandgap from 3.11 eV to 2.99 eV. A combination of improved charge separation and transport of the heat-treated ZnO thus led to an increase in the photoelectrochemical properties. At an irradiation intensity of 100 mW/cm−2, the photocurrent density of the porous nanorod array was approximately 1.3 mA cm−2 at 1.2 V versus Ag/AgCl, which was five times higher than that of the ZnO nanorods. These results revealed the synthesis of promising porous ZnO nanorods for photoelectrochemical applications.

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