scholarly journals Ag2O/sodium alginate supramolecular hydrogel as a film photocatalyst for removal of organic dyes in wastewater

RSC Advances ◽  
2017 ◽  
Vol 7 (25) ◽  
pp. 15077-15083 ◽  
Author(s):  
Yuhua Ma ◽  
Jiajia Wang ◽  
Shimei Xu ◽  
Zhendong Zheng ◽  
Juan Du ◽  
...  
Keyword(s):  
Sodium Alginate ◽  
Charge Separation ◽  
Organic Dyes ◽  
Supramolecular Hydrogel ◽  
Highly Efficient ◽  
Efficient Charge

As a film photocatalyst, a Ag2O/sodium alginate supramolecular hydrogel exhibited excellent photocatalytic degradability, great adsorptivity, highly efficient charge separation and reusability.

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.

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

P-n Heterostructured design of decahedral NiS/BiVO4 with efficient charge separation for enhanced photodegradation of organic dyes

2021 ◽  
Vol 608 ◽  
pp. 125565 ◽  
Author(s):  
Yan Li ◽  
Xue Li ◽  
Xiao-Tian Wang ◽  
Li-Juan Jian ◽  
Nihad Ibrahim Mohammed Abdallah ◽  
...  
Keyword(s):  
Charge Separation ◽  
Organic Dyes ◽  
Efficient Charge

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

Noble-metal-free CdS/Ni-MOF composites with highly efficient charge separation for photocatalytic H2 evolution

2020 ◽  
Vol 522 ◽  
pp. 146356 ◽  
Author(s):  
Junlan Guo ◽  
Yinghua Liang ◽  
Li Liu ◽  
Jinshan Hu ◽  
Huan Wang ◽  
...  
Keyword(s):  
Noble Metal ◽  
Charge Separation ◽  
H2 Evolution ◽  
Metal Free ◽  
Highly Efficient ◽  
Efficient Charge ◽  
Photocatalytic H2 Evolution

Highly Efficient Charge Separation and Collection across in Situ Doped Axial VLS-Grown Si Nanowire p–n Junctions

Nano Letters ◽  
2012 ◽  
Vol 12 (4) ◽  
pp. 1965-1971 ◽  
Author(s):  
A. D. Mohite ◽  
D. E. Perea ◽  
S. Singh ◽  
S. A. Dayeh ◽  
I. H. Campbell ◽  
...  
Keyword(s):  
Charge Separation ◽  
Si Nanowire ◽  
Highly Efficient ◽  
Efficient Charge
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