A Facile Self-assembly Synthesis of Hexagonal ZnO Nanosheet Films and Their Photoelectrochemical Properties

Zhang, Bin; Wang, Faze; Zhu, Changqing; Li, Qiang; Song, Jingnan; Zheng, Maojun; Ma, Li; Shen, Wei

doi:10.1007/s40820-015-0068-y

Cited by 34 publications

(21 citation statements)

References 39 publications

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“…To address these challenges, nanostructured architectures have been explored because of their various advantages compared to bulk materials [ 8 – 11 ]. Alongside the recent population of graphene, two-dimensional (2D) nanostructures, such as nanosheets, nanoplates, and nanoflakes, especially vertical nanoarray structures, are of special interest in artificial photosynthesis owing to their unique mechanical, physical, and chemical properties, as well as extremely large surface areas [ 12 – 14 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Enhanced Visible-Light-Driven Photoelectrochemical Performance of ZnO-Modified In2S3 Nanosheet Arrays by Atomic Layer Deposition

Li¹,

Tu²,

Wang

et al. 2018

Nano-Micro Lett.

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Photoanodes based on In2S3/ZnO heterojunction nanosheet arrays (NSAs) have been fabricated by atomic layer deposition of ZnO over In2S3 NSAs, which were in situ grown on fluorine-doped tin oxide glasses via a facile solvothermal process. The as-prepared photoanodes show dramatically enhanced performance for photoelectrochemical (PEC) water splitting, compared to single semiconductor counterparts. The optical and PEC properties of In2S3/ZnO NSAs have been optimized by modulating the thickness of the ZnO overlayer. After pairing with ZnO, the NSAs exhibit a broadened absorption range and an increased light absorptance over a wide wavelength region of 250–850 nm. The optimized sample of In2S3/ZnO-50 NSAs shows a photocurrent density of 1.642 mA cm−2 (1.5 V vs. RHE) and an incident photon-to-current efficiency of 27.64% at 380 nm (1.23 V vs. RHE), which are 70 and 116 times higher than those of the pristine In2S3 NSAs, respectively. A detailed energy band edge analysis reveals the type-II band alignment of the In2S3/ZnO heterojunction, which enables efficient separation and collection of photogenerated carriers, especially with the assistance of positive bias potential, and then results in the significantly increased PEC activity.Electronic supplementary materialThe online version of this article (10.1007/s40820-018-0199-z) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Highly Enhanced Visible-Light-Driven Photoelectrochemical Performance of ZnO-Modified In2S3 Nanosheet Arrays by Atomic Layer Deposition

Li¹,

Tu²,

Wang

et al. 2018

Nano-Micro Lett.

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“…GO was prepared from natural graphite using a modied Hummers' method. 21 In a typical experiment, graphite (1.5 g), NaNO 3 (1.5 g) and H 2 SO 4 (70 ml) were mixed and stirred in an ice bath. Subsequently, 9 g of KMnO4 were added slowly.…”

Section: Synthesis Of Spongy Graphene Oxide (Sgo)mentioning

confidence: 99%

Black titania nanotubes/spongy graphene nanocomposites for high-performance supercapacitors

2019

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“…Among the various semiconductors, ZnO is also extensively studied because of its identical properties of TiO 2 with non-toxicity, cheapness, high efficiency, and chemical stability [ 13 , 14 ]. Since the conduction band (CB) and valence band (VB) of ZnO lie above those of TiO 2 , the photogenerated electrons in ZnO will be transferred to TiO 2 once a heterojunction was formed between TiO 2 and ZnO.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Heterostructure of ZnO@TiO2 Hollow Spheres for Highly Efficient Photocatalytic Hydrogen Evolution

Wang

Liang

et al. 2017

Nanoscale Res Lett

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The rational design and preparation of hierarchical nanoarchitectures are critical for enhanced photocatalytic hydrogen evolution reaction (HER). Herein, well-integrated hollow ZnO@TiO2 heterojunctions were obtained by a simple hydrothermal method. This unique hierarchical heterostructure not only caused multiple reflections which enhances the light absorption but also improved the lifetime and transfer of photogenerated charge carriers due to the potential difference generated on the ZnO–TiO2 interface. As a result, compared to bare ZnO and TiO2, the ZnO@TiO2 composite photocatalyst exhibited higher hydrogen production rated up to 0.152 mmol h−1 g−1 under simulated solar light. In addition, highly repeated photostability was also observed on the ZnO@TiO2 composite photocatalyst even after a continuous test for 30 h. It is expected that this low-cost, nontoxic, and readily available ZnO@TiO2 catalyst could exhibit promising potential in photocatalytic H2 to meet the future fuel needs.

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A Facile Self-assembly Synthesis of Hexagonal ZnO Nanosheet Films and Their Photoelectrochemical Properties

Cited by 34 publications

References 39 publications

Highly Enhanced Visible-Light-Driven Photoelectrochemical Performance of ZnO-Modified In2S3 Nanosheet Arrays by Atomic Layer Deposition

Highly Enhanced Visible-Light-Driven Photoelectrochemical Performance of ZnO-Modified In2S3 Nanosheet Arrays by Atomic Layer Deposition

Black titania nanotubes/spongy graphene nanocomposites for high-performance supercapacitors

Hierarchical Heterostructure of ZnO@TiO2 Hollow Spheres for Highly Efficient Photocatalytic Hydrogen Evolution

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