Copper vacancy activated plasmonic Cu3−xSnS4 for highly efficient photocatalytic hydrogen generation: Broad solar absorption, efficient charge separation and decreased HER overpotential

Nano Research ◽  
2021 ◽  
Author(s):  
Nazakat Ali ◽  
Tsegaye Tadesse Tsega ◽  
Yucai Cao ◽  
Saghir Abbas ◽  
Wenjing Li ◽  
...  
Keyword(s):  
Charge Separation ◽  
Hydrogen Generation ◽  
Solar Absorption ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation ◽  
Efficient Charge

Insights into the efficient charge separation and transfer efficiency of La,Cr-codoped SrTiO3 modified with CoP as a noble-metal-free co-catalyst for superior visible-light driven photocatalytic hydrogen generation

2018 ◽  
Vol 5 (3) ◽  
pp. 679-686 ◽  
Author(s):  
Pengfei Tan ◽  
Anquan Zhu ◽  
Yi Liu ◽  
Yongjin Ma ◽  
Wenwen Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Noble Metal ◽  
Charge Separation ◽  
Hydrogen Generation ◽  
Transfer Efficiency ◽  
Co Catalyst ◽  
Metal Free ◽  
Photocatalytic Hydrogen Generation ◽  
Efficient Charge ◽  
Visible Light Driven

Doped SrTiO3 modified with CoP as a co-catalyst for photocatalytic H2 evolution was designed and fabricated in this work.

scholarly journals Synthesis of Au/CdSe Janus Nanoparticles with Efficient Charge Transfer for Improving Photocatalytic Hydrogen Generation

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Xiao-Dan Liu ◽  
Kai Chen ◽  
Song Ma ◽  
Zhong-Hua Hao ◽  
Shan Liang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Photocatalytic Performance ◽  
Hydrogen Generation ◽  
Semiconductor Heterostructures ◽  
High Quality ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation ◽  
Janus Nanoparticles ◽  
Efficient Charge

AbstractMetal-semiconductor heterostructures integrate multiply functionalities beyond those of their individual counterparts. Great efforts have been devoted to synthesize heterostructures with controlled morphologies for the applications ranging from photocatalysis to photonic nanodevices. Beyond the morphologies, the interface between two counterparts also significantly influences the performance of the heterostructures. Here, we synthesize Au/CdSe Janus nanostructures consisting of two half spheres of Au and CdSe separated by a flat and high-quality interface. Au/CdSe with other morphologies could also be prepared by adjusting the overgrowth conditions. The photocatalytic hydrogen generation of the Au/CdSe Janus nanospheres is measured to be 3.9 times higher than that of the controlled samples with CdSe half-shells overgrown on the Au nanospheres. The highly efficient charge transfer across the interface between Au and CdSe contributes to the improved photocatalytic performance. Our studies may find the applications in the design of heterostructures with highly efficient photocatalytic activity.

scholarly journals Carbon Nanodots as a Potential Transport Layer for Boosting Performance of All-Inorganic Perovskite Nanocrystals-based Photodetector

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 717
Author(s):  
Hassan Algadi ◽  
Ahmad Umar ◽  
Hasan Albargi ◽  
Turki Alsuwian ◽  
Sotirios Baskoutas
Keyword(s):  
Charge Separation ◽  
High Performance ◽  
Band Alignment ◽  
Transport Layer ◽  
Carbon Nanodots ◽  
Separation Mechanism ◽  
Perovskite Layer ◽  
Inorganic Perovskite ◽  
Highly Efficient ◽  
Efficient Charge

A low-cost and simple drop-casting method was used to fabricate a carbon nanodot (C-dot)/all-inorganic perovskite (CsPbBr3) nanosheet bilayer heterojunction photodetector on a SiO2/Si substrate. The C-dot/perovskite bilayer heterojunction photodetector shows a high performance with a responsivity (R) of 1.09 A/W, almost five times higher than that of a CsPbBr3-based photodetector (0.21 A/W). In addition, the hybrid photodetector exhibits a fast response speed of 1.318/1.342 µs and a highly stable photocurrent of 6.97 µA at 10 V bias voltage. These figures of merits are comparable with, or much better than, most reported perovskite heterojunction photodetectors. UV–Vis absorption and photoluminescent spectra measurements reveal that the C-dot/perovskite bilayer heterojunction has a band gap similar to the pure perovskite layer, confirming that the absorption and emission in the bilayer heterojunction is dominated by the top layer of the perovskite. Moreover, the emission intensity of the C-dot/perovskite bilayer heterojunction is less than that of the pure perovskite layer, indicating that a significant number of charges were extracted by the C-dot layer. The studied band alignment of the C-dots and perovskites in the dark and under emission reveals that the photodetector has a highly efficient charge separation mechanism at the C-dot/perovskite interface, where the recombination rate between photogenerated electrons and holes is significantly reduced. This highly efficient charge separation mechanism is the main reason behind the enhanced performance of the C-dot/perovskite bilayer heterojunction photodetector.

Quaternary two dimensional Zn–Ag–In–S nanosheets for highly efficient photocatalytic hydrogen generation

2018 ◽  
Vol 6 (25) ◽  
pp. 11670-11675 ◽  
Author(s):  
Hao Chen ◽  
Xiao-Yuan Liu ◽  
Shizhuo Wang ◽  
Xu Wang ◽  
Qi Wei ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Water Splitting ◽  
Energy Production ◽  
Hydrogen Generation ◽  
Two Dimensional ◽  
Photocatalytic Water Splitting ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation ◽  
Promising Strategy ◽  
Renewable Energy Production

Hydrogen generation based on photocatalytic water splitting is a promising strategy for renewable energy production.

scholarly journals Highly-efficient charge separation and polaron delocalization in polymer–fullerene bulk-heterojunctions: a comparative multi-frequency EPR and DFT study

2013 ◽  
Vol 15 (24) ◽  
pp. 9562 ◽  
Author(s):  
Jens Niklas ◽  
Kristy L. Mardis ◽  
Brian P. Banks ◽  
Gregory M. Grooms ◽  
Andreas Sperlich ◽  
...  
Keyword(s):  
Charge Separation ◽  
Dft Study ◽  
Bulk Heterojunctions ◽  
Highly Efficient ◽  
Efficient Charge

scholarly journals Structure-controlled CdS(0D, 1D, 2D) embedded onto 2D ZnS porous nanosheets for highly efficient photocatalytic hydrogen generation

RSC Advances ◽  
2017 ◽  
Vol 7 (40) ◽  
pp. 24864-24869 ◽  
Author(s):  
Junmei Wang ◽  
Zhijian Wang ◽  
Li Li ◽  
Jiazang Chen ◽  
Jianfeng Zheng ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Conduction Band ◽  
Hydrogen Generation ◽  
Generation Rate ◽  
Band Energy ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation ◽  
Porous Nanosheets ◽  
Speed Up

Modulating the CdS morphology with a 1D structure with high conduction band energy can speed up the electron transfer to Pt sites and increase the photocatalytic hydrogen generation rate from 7.7 to 26 mmol g−1 h−1.

Fabrication of Hierarchical Co9S8@ZnAgInS Heterostructured Cages for Highly Efficient Photocatalytic Hydrogen Generation and Pollutants Degradation

2020 ◽  
Vol 59 (10) ◽  
pp. 7027-7038 ◽  
Author(s):  
Feifei Zhao ◽  
Dongguang Yin ◽  
Kyu Kyu Khaing ◽  
Bingqi Liu ◽  
Tao Chen ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation

Enabling highly efficient photocatalytic hydrogen generation and organics degradation via a perovskite solar cell-assisted semiconducting nanocomposite photoanode

2019 ◽  
Vol 7 (1) ◽  
pp. 165-171 ◽  
Author(s):  
Xueqin Liu ◽  
Yang Wang ◽  
Xun Cui ◽  
Meng Zhang ◽  
Bing Wang ◽  
...  
Keyword(s):  
Solar Cell ◽  
Hydrogen Generation ◽  
Nanorod Array ◽  
Perovskite Solar Cell ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation

Perovskite solar cell-assisted CdS/TiO2 nanorod array photoanode yields highly efficient photocatalytic hydrogen generation and organics degradation.

Highly efficient charge separation in model Z-scheme TiO2/TiSi2/Si photoanode by micropatterned titanium silicide interlayer

2019 ◽  
Vol 174 ◽  
pp. 237-245 ◽  
Author(s):  
M. Hannula ◽  
H. Ali-Löytty ◽  
K. Lahtonen ◽  
J. Saari ◽  
A. Tukiainen ◽  
...  
Keyword(s):  
Charge Separation ◽  
Titanium Silicide ◽  
Highly Efficient ◽  
Efficient Charge
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