Construction of Ni@Ni 2P Cocatalyst with Core-Shell Nanostructure for High-Efficiency Photocatalytic Hydrogen Production Over G-C 3N 4

2021 ◽  
Author(s):  
Lingling Bi ◽  
Xiaobo Liang ◽  
Lijing Zhang ◽  
Jinlong Jiang ◽  
Tao Hu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
High Efficiency ◽  
Core Shell ◽  
Photocatalytic Hydrogen Production

Controllable design of double metal oxide (NiCo2O4)-modified CdS for efficient photocatalytic hydrogen production

2019 ◽  
Vol 21 (8) ◽  
pp. 4501-4512 ◽  
Author(s):  
Xian Yan ◽  
Zhiliang Jin ◽  
Yupeng Zhang ◽  
Hai Liu ◽  
Xiaoli Ma
Keyword(s):  
High Temperature ◽  
Hydrogen Production ◽  
Metal Oxide ◽  
Hydrothermal Method ◽  
High Efficiency ◽  
Composite Photocatalyst ◽  
Photocatalytic Hydrogen Production ◽  
High Temperature Calcination

In the present study, we have successfully synthesized a kind of high-efficiency NiCo2O4/CdS composite photocatalyst using the hydrothermal method and high-temperature calcination.

scholarly journals Enhanced Photocatalytic Hydrogen Production of the Polyoxoniobate Modified with RGO and PPy

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2449
Author(s):  
Shiliang Heng ◽  
Lei Li ◽  
Weiwei Li ◽  
Haiyan Li ◽  
Jingyu Pang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Active Sites ◽  
High Efficiency ◽  
Solvothermal Method ◽  
H2 Production ◽  
H2 Evolution ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Production ◽  
Reduced Graphene ◽  
One Step

The development of high-efficiency, recyclable, and inexpensive photocatalysts for water splitting for hydrogen production is of great significance to the application of solar energy. Herein, a series of graphene-decorated polyoxoniobate photocatalysts Nb6/PPy-RGO (Nb6 = K7HNb6O19, RGO = reduced graphene oxide, PPy = polypyrrole), with the bridging effect of polypyrrole were prepared through a simple one-step solvothermal method, which is the first example of polyoxoniobate-graphene-based nanocomposites. The as-fabricated photocatalyst showed a photocatalytic H2 evolution activity without any co-catalyst. The rate of 1038 µmol g−1 in 5 h under optimal condition is almost 43 times higher than that of pure K7HNb6O19·13H2O. The influencing factors for photocatalysts in photocatalytic hydrogen production under simulated sunlight were studied in detail and the feasible mechanism is presented in this paper. These results demonstrate that Nb6O19 acts as the main catalyst and electron donor, RGO provides active sites, and PPy acted as an electronic bridge to extend the lifetime of photo-generated carriers, which are crucial factors for photocatalytic H2 production.

scholarly journals Photocatalytic Hydrogen Evolution from Water Splitting Using Core-Shell Structured Cu/ZnS/COF Composites

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3380
Author(s):  
Wenmin Wang ◽  
Bing Li ◽  
Hsin-Ju Yang ◽  
Yuzhi Liu ◽  
Lakshmanan Gurusamy ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Active Sites ◽  
Fossil Fuels ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Porous Network ◽  
Photocatalytic Hydrogen Production ◽  
Redox Sites

Hydrogen is considered to be a very efficient and clean fuel since it is a renewable and non-polluting gas with a high energy density; thus, it has drawn much attention as an alternative fuel, in order to alleviate the issue of global warming caused by the excess use of fossil fuels. In this work, a novel Cu/ZnS/COF composite photocatalyst with a core-shell structure was synthesized for photocatalytic hydrogen production via water splitting. The Cu/ZnS/COF microspheres formed by Cu/ZnS crystal aggregation were covered by a microporous thin-film COF with a porous network structure, where COF was also modified by the dual-effective redox sites of C=O and N=N. The photocatalytic hydrogen production results showed that the hydrogen production rate reached 278.4 µmol g−1 h−1, which may be attributed to its special structure, which has a large number of active sites, a more negative conduction band than the reduction of H+ to H2, and the ability to inhibit the recombination of electron-hole pairs. Finally, a possible mechanism was proposed to effectively explain the improved photocatalytic performance of the photocatalytic system. The present work provides a new concept, in order to construct a highly efficient hydrogen production catalyst and broaden the applications of ZnS-based materials.

MoP@MoO3 S-scheme heterojunction in-situ construction with phosphating MoO3 for high-efficient photocatalytic hydrogen production

Nanoscale ◽  
2021 ◽  
Author(s):  
Lijun Zhang ◽  
Zhiliang Jin ◽  
Noritatsu Tsubaki
Keyword(s):  
Hydrogen Production ◽  
Artificial Photosynthesis ◽  
Core Shell ◽  
Photocatalytic Hydrogen Production ◽  
Effective Strategies ◽  
Highly Active ◽  
High Efficient

As an important artificial photosynthesis, the construction of core-shell heterojunction materials is considered to be one of the effective strategies for designing highly active photocatalysts. Here, the Step-scheme (S-scheme) heterojunction...

Core–shell amorphous cobalt phosphide/cadmium sulfide semiconductor nanorods for exceptional photocatalytic hydrogen production under visible light

2016 ◽  
Vol 4 (5) ◽  
pp. 1598-1602 ◽  
Author(s):  
Zijun Sun ◽  
Bihu Lv ◽  
Jingshi Li ◽  
Min Xiao ◽  
Xiaoyong Wang ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Hydrogen Production ◽  
Visible Light ◽  
Cadmium Sulfide ◽  
Core Shell ◽  
Apparent Quantum Yield ◽  
Photocatalytic Hydrogen Production ◽  
Cobalt Phosphide

We report that a photocatalyst made of amorphous cobalt phosphide (CoPx) integrated with CdS NRs for H2 production under visible light. The CoPx/CdS NRs gave an apparent quantum yield at ∼35% (λ = 450 nm).

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