Assembling n-Bi2MoO6 Nanosheets on Electrospun p-CuAl2O4 Hollow Nanofibers: Enhanced Photocatalytic Activity Based on Highly Efficient Charge Separation and Transfer

2018 ◽  
Vol 6 (8) ◽  
pp. 10714-10723 ◽  
Author(s):  
Jian Zhang ◽  
Changlu Shao ◽  
Xinghua Li ◽  
Jiayu Xin ◽  
Ran Tao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Separation ◽  
Hollow Nanofibers ◽  
Highly Efficient ◽  
Efficient Charge

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.

Greatly enhanced photocatalytic activity by organic flexible piezoelectric PVDF induced spatial electric field

2017 ◽  
Vol 7 (23) ◽  
pp. 5594-5601 ◽  
Author(s):  
Baoying Dai ◽  
Hengming Huang ◽  
Wei Wang ◽  
Yukai Chen ◽  
Chunhua Lu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Electric Field ◽  
Charge Separation ◽  
High Photocatalytic Activity ◽  
Efficient Charge ◽  
Vital Factor

Efficient charge separation accelerated by a spatial electric field is a vital factor for semiconductor photocatalysts to achieve high photocatalytic activity.

Efficient charge separation promoting visible-light-driven photocatalytic activity of MnO x decorated WS 2 hybrid nanosheets

2016 ◽  
Vol 72 ◽  
pp. 118-121 ◽  
Author(s):  
Hua-Bin Fang ◽  
Nan Li ◽  
Zhibing Xue ◽  
Yikun Zhang ◽  
Yan-Zhen Zheng ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
Efficient Charge ◽  
Visible Light Driven

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

Enhancing visible light photocatalytic activity of bismuth vanadate with the loading of zinc oxide

2019 ◽  
Vol 12 (01) ◽  
pp. 1850110 ◽  
Author(s):  
Mengjun Liang ◽  
Lu Chen ◽  
Zhiyuan Yang ◽  
Zhen Zeng ◽  
Shuijin Yang
Keyword(s):  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Specific Surface ◽  
Visible Light Irradiation ◽  
Charge Separation ◽  
Facile Hydrothermal Method ◽  
Excellent Photocatalytic Activity ◽  
Efficient Charge ◽  
Visible Light Photocatalytic

ZnO/Bi4V2O[Formula: see text] nanocomposites were prepared via a facile hydrothermal method by loading different amounts of ZnO onto the surface of Bi4V2O[Formula: see text]. The resulting ZnO/Bi4V2O[Formula: see text] composites showed excellent photocatalytic activity than that of pure ZnO under visible light irradiation. When the ratio of ZnO to Bi4V2O[Formula: see text] was 1:1 (ZB2), the photocatalytic activity was best, which could degrade RhB almost completely within 30[Formula: see text]min. The enhanced photocatalytic activity of ZnO/Bi4V2O[Formula: see text] composites could be mainly ascribed to the efficient charge separation and the increased specific surface area. Based on the experimental and bandgap calculations, a possible photocatalytic mechanism was proposed.

Fabrication of TiO2 nanosheets via Ti3+ doping and Ag3PO4 QD sensitization for highly efficient visible-light photocatalysis

RSC Advances ◽  
2016 ◽  
Vol 6 (68) ◽  
pp. 63984-63990 ◽  
Author(s):  
Lu Ma ◽  
Hong Han ◽  
Lun Pan ◽  
Muhammad Tahir ◽  
Li Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
Separation Efficiency ◽  
High Photocatalytic Activity ◽  
Visible Light Photocatalysis ◽  
High Charge ◽  
Highly Efficient ◽  
Tio2 Nanosheets ◽  
Charge Separation Efficiency

Ag3PO4 QDs sensitized and Ti3+-doped TiO2 nanosheets were fabricated, and exhibit high charge-separation efficiency and high photocatalytic activity.

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

A facile approach to construct BiOI/Bi5O7I composites with heterostructures: efficient charge separation and enhanced photocatalytic activity

RSC Advances ◽  
2015 ◽  
Vol 5 (91) ◽  
pp. 74174-74179 ◽  
Author(s):  
Yaoguang Yu ◽  
Gang Chen ◽  
Xu Wang ◽  
Dechang Jia ◽  
Pengxiao Tang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Charge Separation ◽  
Facile Hydrothermal Method ◽  
Composite Photocatalysts ◽  
Efficient Charge

A series of BiOI/Bi5O7I composite photocatalysts with heterostructures was successfully synthetized through a facile hydrothermal method.

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