Direct Z-scheme SiNWs@Co3O4 photocathode with a cocatalyst of sludge-derived carbon quantum dots for efficient photoelectrochemical hydrogen production

2021 ◽  
pp. 148931
Author(s):  
Feifei Lin ◽  
Ying-Ying Gu ◽  
Hongjiang Li ◽  
Shuaijun Wang ◽  
Xiuxia Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Production ◽  
Carbon Quantum Dots ◽  
Photoelectrochemical Hydrogen Production

The two dimension carbon quantum dots modified porous g-C 3 N 4 /TiO 2 nano-heterojunctions for visible light hydrogen production enhancement

2018 ◽  
Vol 43 (13) ◽  
pp. 6586-6593 ◽  
Author(s):  
Jiaqi Pan ◽  
Mingzhu You ◽  
Chunyan Chi ◽  
Zongjun Dong ◽  
Beibei Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Production ◽  
Visible Light ◽  
Carbon Quantum Dots ◽  
Two Dimension

Review on hydrogen production photocatalytically using carbon quantum dots: Future fuel

2021 ◽  
Author(s):  
Yogeshwari Vyas ◽  
Priyanka Chundawat ◽  
Dharmendra Dharmendra ◽  
Pinki B. Punjabi ◽  
Chetna Ameta
Keyword(s):  
Quantum Dots ◽  
Hydrogen Production ◽  
Carbon Quantum Dots

Integrating PbS Quantum Dots with Hematite for Efficient Photoelectrochemical Hydrogen Production

2019 ◽  
Vol 216 (7) ◽  
pp. 1800839
Author(s):  
Ashi Ikram ◽  
Sahab Dass ◽  
Rohit Shrivastav ◽  
Vibha R. Satsangi
Keyword(s):  
Quantum Dots ◽  
Hydrogen Production ◽  
Photoelectrochemical Hydrogen Production ◽  
Pbs Quantum Dots

scholarly journals Metal-Free Carbon Quantum Dots Implant Graphitic Carbon Nitride: Enhanced Photocatalytic Dye Wastewater Purification with Simultaneous Hydrogen Production

2020 ◽  
Vol 21 (3) ◽  
pp. 1052 ◽  
Author(s):  
Lilei Zhang ◽  
Jingxiao Zhang ◽  
Yuanyu Xia ◽  
Menghan Xun ◽  
Hong Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Production ◽  
Carbon Nitride ◽  
Carbon Quantum Dots ◽  
Free Carbon ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Dye Wastewater ◽  
Wastewater Purification ◽  
Metal Free

The use of photocatalysts to purify wastewater and simultaneously convert solar energy into clean hydrogen energy is of considerable significance in environmental science. However, it is still a challenge due to their relatively high costs, low efficiencies, and poor stabilities. In this study, a metal-free carbon quantum dots (CQDs) modified graphitic carbon nitride photocatalyst (CCN) was synthesized by a facile method. The characterization and theoretical calculation results reveal that the incorporation of CQDs into the g-C3N4 matrix significantly improves the charge transfer and separation efficiency, exhibits a redshift of absorption edge, narrows the bandgap, and prevents the recombination of photoexcited carriers. The hydrogen production and simultaneous degradation of methylene blue (MB) or rhodamine B (RhB) in simulated wastewaters were further tested. In the simulated wastewater, the CCN catalyst showed enhanced photodegradation efficiency, accompanied with the increased hydrogen evolution rate (1291 µmol·h−1·g−1). The internal electrical field between the g-C3N4 and the CQDs is the main reason for the spatial separation of photoexcited electron-hole pairs. Overall, this work could offer a new protocol for the design of highly efficient photocatalysts for dye wastewater purification with simultaneous hydrogen production.

scholarly journals Carbon-Quantum-Dots-Loaded Ruthenium Nanoparticles as an Efficient Electrocatalyst for Hydrogen Production in Alkaline Media

2018 ◽  
Vol 30 (31) ◽  
pp. 1800676 ◽  
Author(s):  
Weidong Li ◽  
Yuan Liu ◽  
Min Wu ◽  
Xiaolei Feng ◽  
Simon A. T. Redfern ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Production ◽  
Carbon Quantum Dots ◽  
Alkaline Media ◽  
Ruthenium Nanoparticles

Heterostructured quantum dot architectures for efficient and stable photoelectrochemical hydrogen production

2018 ◽  
Vol 6 (16) ◽  
pp. 6822-6829 ◽  
Author(s):  
Rajesh Adhikari ◽  
Kaustubh Basu ◽  
Yufeng Zhou ◽  
Fiorenzo Vetrone ◽  
Dongling Ma ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Production ◽  
Quantum Dot ◽  
Core Shell ◽  
Solar Hydrogen ◽  
Solar Hydrogen Production ◽  
Photoelectrochemical Hydrogen Production

Heterostructured core/shell quantum dots are designed to boost performance of quantum dot sensitized photoanodes for photoelectrochemical solar hydrogen production.

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