Large-scale synthesis of stable mesoporous black TiO2 nanosheets for efficient solar-driven photocatalytic hydrogen evolution via an earth-abundant low-cost biotemplate

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 50506-50512 ◽  
Author(s):  
Kaifu Zhang ◽  
Wei Zhou ◽  
Xiangcheng Zhang ◽  
Yang Qu ◽  
Lei Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Large Scale ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic Hydrogen Generation ◽  
Tio2 Nanosheets ◽  
Black Tio2 ◽  
Earth Abundant ◽  
Large Scale Synthesis

Stable mesoporous black anatase TiO2 nanosheets (MBTNs) are synthesized via an earth-abundant low-cost biotemplate method combined with an ethanediamine encircling process, and exhibit excellent solar-driven photocatalytic hydrogen generation.

In situ synthesis of novel Cu2CO3(OH)2 decorated 2D TiO2 nanosheets with efficient photocatalytic H2 evolution activity

2018 ◽  
Vol 47 (2) ◽  
pp. 348-356 ◽  
Author(s):  
Hao Xu ◽  
Dongsheng Dai ◽  
Songsong Li ◽  
Lei Ge ◽  
Yangqin Gao
Keyword(s):  
Hydrogen Evolution ◽  
Low Cost ◽  
In Situ Synthesis ◽  
H2 Evolution ◽  
Photocatalytic Hydrogen Evolution ◽  
Co Catalysts ◽  
Tio2 Nanosheets ◽  
Earth Abundant ◽  
Photocatalytic H2 Evolution

Semiconductor-based photocatalytic hydrogen evolution from water with earth-abundant and low cost co-catalysts has attracted much attention.

scholarly journals Few-layered CuInP2S6 nanosheet with sulfur vacancy boosting photocatalytic hydrogen evolution

CrystEngComm ◽  
2021 ◽  
Author(s):  
Peng Yu ◽  
Fengmei Wang ◽  
Jun Meng ◽  
Tofik Ahmed Shifa ◽  
Marshet Getaye Sendeku ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
Sulfur Vacancy ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic Hydrogen Generation

Uniform few-layered CuInP2S6 nanosheets and microsheets were initially synthesized and utilized as photocatalysts towards photocatalytic hydrogen generation.

scholarly journals Facile and Large-scale Synthesis of Defective Black TiO2−x(B) Nanosheets for Efficient Visible-light-driven Photocatalytic Hydrogen Evolution

Catalysts ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1048 ◽  
Author(s):  
JingCheng Xu ◽  
JiaJia Zhang ◽  
ZhengYang Cai ◽  
He Huang ◽  
TianHao Huang ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Photoelectron Spectroscopy ◽  
Large Scale ◽  
Broad Band ◽  
Mass Ratio ◽  
X Ray ◽  
Black Tio2 ◽  
Large Scale Synthesis ◽  
Nabh4 Reduction

In the work, we firstly report the facile and large-scale synthesis of defective black TiO2−x(B) nanosheets via a dual-zone NaBH4 reduction method. The structure, physico-chemical, and optical properties of TiO2−x(B) nanosheets were systematically characterized by powder X-ray diffraction, Raman spectroscopy, UV-Vis absorption spectroscopy, and X-ray photoelectron spectroscopy, etc. The concentration of Ti3+ can be well tuned by NaBH4 reduction. With increasing the mass ratio of NaBH4 to TiO2(B), the generation of Ti3+ defects gives rise to the increased intensity of a broad band absorption in the visible wavelength range. It is demonstrated that the TiO2−x(B) photocatalyst synthesized with the mass ratio of NaBH4 to TiO2(B) of 3:1 exhibited an optimum photocatalytic activity and excellent photostability for hydrogen evolution under visible-light irradiation. By combining the advantages of 2D TiO2(B) nanosheets architecture with those of Ti3+ self-doping and simultaneous production of oxygen vacancy sites, the enhanced photocatalytic performance of the defective TiO2−x(B) nanosheets was achieved.

scholarly journals Rational design of isostructural 2D porphyrin-based covalent organic frameworks for tunable photocatalytic hydrogen evolution

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Rufan Chen ◽  
Yang Wang ◽  
Yuan Ma ◽  
Arindam Mal ◽  
Xiao-Ya Gao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Rational Design ◽  
Hydrogen Generation ◽  
Structure Design ◽  
Molecular Engineering ◽  
Valuable Insight ◽  
Covalent Organic Frameworks ◽  
Structure Property ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic Hydrogen Generation

AbstractCovalent organic frameworks have recently gained increasing attention in photocatalytic hydrogen generation from water. However, their structure-property-activity relationship, which should be beneficial for the structural design, is still far-away explored. Herein, we report the designed synthesis of four isostructural porphyrinic two-dimensional covalent organic frameworks (MPor-DETH-COF, M = H2, Co, Ni, Zn) and their photocatalytic activity in hydrogen generation. Our results clearly show that all four covalent organic frameworks adopt AA stacking structures, with high crystallinity and large surface area. Interestingly, the incorporation of different transition metals into the porphyrin rings can rationally tune the photocatalytic hydrogen evolution rate of corresponding covalent organic frameworks, with the order of CoPor-DETH-COF < H2Por-DETH-COF < NiPor-DETH-COF < ZnPor-DETH-COF. Based on the detailed experiments and calculations, this tunable performance can be mainly explained by their tailored charge-carrier dynamics via molecular engineering. This study not only represents a simple and effective way for efficient tuning of the photocatalytic hydrogen evolution activities of covalent organic frameworks at molecular level, but also provides valuable insight on the structure design of covalent organic frameworks for better photocatalysis.

Over two-orders of magnitude enhancement of the photocatalytic hydrogen evolution activity of carbon nitride via mediator-free decoration with gold-organic microspheres

2017 ◽  
Vol 53 (86) ◽  
pp. 11814-11817 ◽  
Author(s):  
Qiaoli Zhang ◽  
Shengyang Yang ◽  
Su-Na Yin ◽  
Huaiguo Xue
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Hydrogen Generation ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic Hydrogen Generation

A Pt and mediator free route was developed to achieve binary sized AuNPs in g-C3N4for enhanced photocatalytic hydrogen generation.

2D ultrathin CoP modified MnxCd1−xS with controllable band structure and robust photocatalytic performance for hydrogen generation

2019 ◽  
Vol 48 (39) ◽  
pp. 14783-14791 ◽  
Author(s):  
Ran Chen ◽  
Yanhui Ao ◽  
Chao Wang ◽  
Peifang Wang
Keyword(s):  
Band Structure ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
High Efficiency ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Light Irradiation ◽  
Earth Abundant

Considerable efforts have been directed towards constructing high-efficiency, earth-abundant and low-cost photocatalysts for hydrogen evolution under visible light irradiation.

Mesoporous assembled structures of Cu2O and TiO2nanoparticles for highly efficient photocatalytic hydrogen generation from water

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 54848-54855 ◽  
Author(s):  
I. Tamiolakis ◽  
I. T. Papadas ◽  
K. C. Spyridopoulos ◽  
G. S. Armatas
Keyword(s):  
Visible Light ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
Internal Surface ◽  
Internal Surface Area ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation ◽  
Uv Visible

Mesoporous assemblies of Cu2O/TiO2nanoparticle heterojunctions, which have a large internal surface area and narrow-sized pores, show highly efficient and robust photocatalytic hydrogen evolution from water using UV-visible light.

Composition effect of alloy semiconductors on Pt-tipped Zn1−xCdxSe nanorods for enhanced photocatalytic hydrogen generation

2018 ◽  
Vol 6 (34) ◽  
pp. 16316-16321 ◽  
Author(s):  
Ji Yong Choi ◽  
Ki Min Nam ◽  
Hyunjoon Song
Keyword(s):  
Hydrogen Evolution ◽  
Electron Mobility ◽  
Light Absorption ◽  
Hydrogen Generation ◽  
Composition Effect ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic Hydrogen Generation ◽  
Alloy Semiconductors

The light absorption and electron mobility of alloy semiconductors significantly influenced the photocatalytic hydrogen evolution of Pt-tipped Zn1−xCdxSe nanorods.

scholarly journals In situ synthesis of g-C3N4/TiO2 heterostructures with enhanced photocatalytic hydrogen evolution under visible light

RSC Advances ◽  
2017 ◽  
Vol 7 (64) ◽  
pp. 40327-40333 ◽  
Author(s):  
Hui Zhang ◽  
Feng Liu ◽  
Hao Wu ◽  
Xin Cao ◽  
Jianhua Sun ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Hydrogen Generation ◽  
In Situ Synthesis ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic Hydrogen Generation ◽  
Novel Method

C3N4 nanosheets/TiO2 nano-heterostructures have been synthesized via a novel method, exhibiting excellent photocatalytic hydrogen generation under visible light irradiation.

scholarly journals NiO Nanosheets Coupled With CdS Nanorods as 2D/1D Heterojunction for Improved Photocatalytic Hydrogen Evolution

2021 ◽  
Vol 9 ◽  
Author(s):  
Lin Wei ◽  
Deqian Zeng ◽  
Zongzhuo Xie ◽  
Qingru Zeng ◽  
Hongfei Zheng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Environment Friendly ◽  
Photocatalytic Hydrogen Evolution ◽  
Cds Nanorods ◽  
Highly Active ◽  
Type Semiconductor ◽  
P Type ◽  
Nio Nanosheets

Designing low-cost, environment friendly, and highly active photocatalysts for water splitting is a promising path toward relieving energy issues. Herein, one-dimensional (1D) cadmium sulfide (CdS) nanorods are uniformly anchored onto two-dimensional (2D) NiO nanosheets to achieve enhanced photocatalytic hydrogen evolution. The optimized 2D/1D NiO/CdS photocatalyst exhibits a remarkable boosted hydrogen generation rate of 1,300 μmol h−1 g−1 under visible light, which is more than eight times higher than that of CdS nanorods. Moreover, the resultant 5% NiO/CdS composite displays excellent stability over four cycles for photocatalytic hydrogen production. The significantly enhanced photocatalytic activity of the 2D/1D NiO/CdS heterojunction can be attributed to the efficient separation of photogenerated charge carriers driven from the formation of p-n NiO/CdS heterojunction. This study paves a new way to develop 2D p-type NiO nanosheets-decorated n-type semiconductor photocatalysts for photocatalytic applications.

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