Simultaneous manipulation of ion doping and cocatalyst loading into Mn0.3Cd0.7S nanorods toward significantly improved H2 evolution

2020 ◽  
Vol 10 (15) ◽  
pp. 5082-5090 ◽  
Author(s):  
Yanling Han ◽  
Xinfa Dong
Keyword(s):  
Solvothermal Method ◽  
H2 Evolution ◽  
Step Process ◽  
Ion Doping ◽  
One Step ◽  
Facile Solvothermal Method

Ni2P and Ni2+ jointly modified Mn0.3Cd0.7S photocatalysts were successfully fabricated via a facile solvothermal method. The loading of Ni2P and the doping of Ni2+ proceeded simultaneously via a one-step process.

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 The Effect of Cu and Ga Doped ZnIn2S4 under Visible Light on the High Generation of H2 Production

2019 ◽  
Vol 3 (4) ◽  
pp. 79 ◽  
Author(s):  
Ikki Tateishi ◽  
Mai Furukawa ◽  
Hideyuki Katsumata ◽  
Satoshi Kaneco
Keyword(s):  
Visible Light ◽  
Solvothermal Method ◽  
H2 Production ◽  
Hexagonal Structure ◽  
Bandgap Energy ◽  
Charge Hole ◽  
H2 Evolution ◽  
Molar Ratios ◽  
Structure Morphology ◽  
One Step

A Cu+ and Ga3+ co-doped ZnIn2S4 photocatalyst (Zn(1−2x)(CuGa)xIn2S4) with controlled band gap was prepared via a simple one-step solvothermal method. Zn(1−2x)(CuGa)xIn2S4 acted as an efficient photocatalyst for H2 evolution under visible light irradiation (λ > 420 nm; 4500 µW/cm2). The effects of the (Cu and Ga)/Zn molar ratios of Zn(1−2x)(CuGa)xIn2S4 on the crystal structure (hexagonal structure), morphology (microsphere-like flower), optical property (light harvesting activity and charge hole separation ability), and photocatalytic activity have been investigated in detail. The maximum H2 evolution rate (1650 µmol·h−1·g−1) was achieved over Zn0.84(CuGa)0.13In2S4, showing a 3.3 times higher rate than that of untreated ZnIn2S4. The bandgap energy of Zn(1−2x)(CuGa)xIn2S4 decreased from 2.67 to 1.90 eV as the amount of doping Cu+ and Ga3+ increased.

scholarly journals Improvement of Photocatalytic H2-Generation under Visible Light Irradiation by Controlling the Band Gap of ZnIn2S4 with Cu and In

Catalysts ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 681 ◽  
Author(s):  
Ikki Tateishi ◽  
Mai Furukawa ◽  
Hideyuki Katsumata ◽  
Satoshi Kaneco
Keyword(s):  
Crystal Structure ◽  
Visible Light ◽  
Band Gap ◽  
Solvothermal Method ◽  
H2 Evolution ◽  
Electron Hole ◽  
H2 Generation ◽  
Highly Active ◽  
One Step ◽  
Photocatalytic H2 Generation

The band gap controlled photocatalyst (Zn0.74Cu0.13In2S3.805) was prepared via a simple one-step solvothermal method. The effects of doping of Cu+ and excess In on the photocatalytic activity of ZnIn2S4 photocatalyst were investigated. In addition, optical properties, surface morphology and crystal structure were evaluated. The maximum H2 evolution rate (2370 µmol h−1 g−1) was achieved with Zn0.74Cu0.13In2S3.805, which was about five times higher than that of untreated ZnIn2S4 under visible light (λ ≥ 420 nm). The band gap of Zn0.74Cu0.13In2S3.805 decreased to 1.98 eV by raising the maximum position of the valence band, compared to ZnIn2S4. Furthermore, the recombination of electron hole pairs was effectively reduced. This research contributes to the development of highly active photocatalysts under visible light.

scholarly journals Synthesis and NO2gas-sensing properties of coral-like indium oxide via a facile solvothermal method

RSC Advances ◽  
2017 ◽  
Vol 7 (78) ◽  
pp. 49273-49278 ◽  
Author(s):  
Haijiao Zhang ◽  
Xiumei Xu ◽  
Yongsheng Zhu ◽  
Keyan Bao ◽  
Zhiwen Lu ◽  
...  
Keyword(s):  
Indium Oxide ◽  
Gas Sensing ◽  
Solvothermal Method ◽  
Environmentally Friendly ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
One Step ◽  
Facile Solvothermal Method

In this work, coral-like indium oxide was synthesizedviaan environmentally friendly one-step solvothermal method and the gas sensing properties were investigated.

Well-designed honeycomb Co3O4@CdS photocatalyst derived from cobalt foam for high-efficiency visible-light H2 evolution

2021 ◽  
Author(s):  
Chao Zhang ◽  
Baoquan Liu ◽  
Weiping Li ◽  
Xiangxue Liu ◽  
Ke Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
High Efficiency ◽  
H2 Evolution ◽  
One Step

Well-designed honeycomb Co3O4@CdS (H-Co3O4@CdS) was fabricated via a one-step strategy for efficient water splitting. During the decoration of CdS, honeycomb Co3O4 (H-Co3O4) with macropore was formed simultaneously. H-Co3O4 could enhance...

scholarly journals Novel BiOBr by compositing low-cost biochar for efficient ciprofloxacin removal: the synergy of adsorption and photocatalysis on the degradation kinetics and mechanism insight

RSC Advances ◽  
2021 ◽  
Vol 11 (25) ◽  
pp. 15369-15379
Author(s):  
Wandi Song ◽  
Jianghua Zhao ◽  
Xiuhong Xie ◽  
Wang Liu ◽  
Shuxia Liu ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Solvothermal Method ◽  
Degradation Kinetics ◽  
Low Cost ◽  
Kinetics And Mechanism ◽  
One Step ◽  
Ciprofloxacin Removal

1. The C-loaded BiOBr was synthesized via a one-step solvothermal method. 2. C/BiOBr showed an obvious synergistic effect of adsorption and photocatalysis on the degradation of ciprofloxacin.

Functionalized aluminum-catalyzed silicon nanowire formation and radial junction photovoltaic devices

Nanoscale ◽  
2021 ◽  
Author(s):  
Wipakorn Jevasuwan ◽  
Naoki Fukata
Keyword(s):  
Surface Modification ◽  
Solar Cells ◽  
Surface Defects ◽  
Silicon Nanowire ◽  
Photovoltaic Devices ◽  
Step Process ◽  
One Step ◽  
Length Reduction

Vertical Al-catalyzed SiNW arrays with shaped surfaces were synthesized by a one-step process and NW-based solar cells were demonstrated with optimized NW surface defects through surface modification and length reduction.

Preparation of hollow Fe3O4 spheres through a facile method and their applications

2017 ◽  
Vol 10 (06) ◽  
pp. 1750075 ◽  
Author(s):  
Xingping Wu ◽  
Aiping Zhu ◽  
Zhaodong Nan
Keyword(s):  
Saturation Magnetization ◽  
Ostwald Ripening ◽  
Solvothermal Method ◽  
Hollow Spheres ◽  
Hollow Structure ◽  
Solid Sphere ◽  
Small Particles ◽  
Potential Applications ◽  
One Step ◽  
Solid Spheres

Fe3O4 hollow microspheres with good dispersibility and high saturation magnetization were synthesized through a facile one-step solvothermal method. The formation mechanism of the hollow structure was studied by taking time-dependent experiments. Porous [Formula: see text]-FeOOH and [Formula: see text]-Fe2O3 nanosheets were firstly fabricated. Fe3O4 solid spheres aggregated by small particles were obtained from the transition of [Formula: see text]-FeOOH and [Formula: see text]-Fe2O3. Finally, the solid sphere is transferred to hollow sphere through Ostwald ripening. The maximum saturation magnetization of the hollow spheres is [Formula: see text][Formula: see text]emu/g, which is higher than some results reported in references. The Fe3O4 hollow spheres show potential applications in microwave absorption and photocatalysis.

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