Plasmonic nanoparticle-film-assisted photoelectrochemical catalysis across the entire visible-NIR region

Nanoscale ◽  
2019 ◽  
Vol 11 (47) ◽  
pp. 23058-23064 ◽  
Author(s):  
Junchang Zhang ◽  
Yinghui Sun ◽  
Rui Feng ◽  
Wenkai Liang ◽  
Zhiqiang Liang ◽  
...  
Keyword(s):  
Light Absorption ◽  
Fold Increase ◽  
Electron Hole ◽  
Plasmonic Nanoparticle ◽  
Effective Separation ◽  
Nir Light ◽  
Nanoparticle Film

Vis-NIR light absorption and effective separation of electron–hole pairs are achieved by integrating the SPR modes of plasmonic nanoparticle and film, which lead to an 88-fold increase in photocurrent under λ > 420 nm compared to TiO2.

Synthesis and Photocatalytic Properties of the Bi2MoO6 and Bi2WO6 Photocatalysts

2018 ◽  
Vol 768 ◽  
pp. 218-223
Author(s):  
Juan Xia ◽  
Lin Zhang ◽  
Qi Wang
Keyword(s):  
Light Absorption ◽  
Hydrothermal Reaction ◽  
Organic Dyes ◽  
High Surface ◽  
Diffuse Reflectance Spectrum ◽  
High Surface Area ◽  
Photocatalytic Properties ◽  
X Ray Diffraction ◽  
Electron Hole ◽  
One Pot

Two different Bi-based semiconductor photocatalysts Bi2MoO6 and Bi2WO6 were synthesized by a simple one-pot hydrothermal reaction at 453 K for 10 h. The properties of the photocatalysts, including structures, morphology, light-absorption band and photoluminescence, etc were characterized by X-ray diffraction, scanning electron microscopy, UV-Vis diffuse reflectance spectrum and fluorescence spectrum. Further, their photocatalytic properties were compared by the degradation of two different organic dyes: Rhodamine B and methylene blue. It is important to note that the Bi2WO6 nanoplate structure exhibited better photocatalytic activity than the Bi2MoO6 nanowires aggregates due to its high surface area, higher light absorption and lower recombination of electron-hole pairs.

One-step solvothermal fabrication of Cu@PANI core–shell nanospheres for hydrogen evolution

Nanoscale ◽  
2018 ◽  
Vol 10 (46) ◽  
pp. 22055-22064 ◽  
Author(s):  
Ting Wang ◽  
Dan Wu ◽  
Youliang Wang ◽  
Tingbo Huang ◽  
Gary Histand ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Hydrogen Evolution ◽  
Light Absorption ◽  
Good Stability ◽  
Core Shell ◽  
Electron Hole ◽  
Facile Hydrothermal Method ◽  
Strong Light ◽  
Efficient Separation ◽  
One Step

Cu@PANI core–shell nanospheres synthesized by a facile hydrothermal method exhibit strong light absorption, good stability and efficient separation of photo-generated electron–hole pairs.

Designed synthesis of a p-Ag2S/n-PDI self-assembled supramolecular heterojunction for enhanced full-spectrum photocatalytic activity

2019 ◽  
Vol 7 (11) ◽  
pp. 6482-6490 ◽  
Author(s):  
Jun Yang ◽  
Hong Miao ◽  
Wenlu Li ◽  
Huiquan Li ◽  
Yongfa Zhu
Keyword(s):  
Photocatalytic Activity ◽  
Electron Hole ◽  
Full Spectrum ◽  
Effective Separation ◽  
Excellent Activity ◽  
Self Assembled ◽  
Designed Synthesis

An efficient full-spectrum responsive p-Ag2S/n-PDI heterojunction was successfully constructed. The excellent activity was mainly attributed to the more effective separation of electron-hole pairs.

Effective charge separation and enhanced photocatalytic activity by the heterointerface in MoS2/reduced graphene oxide composites

RSC Advances ◽  
2016 ◽  
Vol 6 (65) ◽  
pp. 60318-60326 ◽  
Author(s):  
Long Zhang ◽  
Lan Sun ◽  
Shuai Liu ◽  
Yuhong Huang ◽  
Kewei Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Charge Separation ◽  
Effective Charge ◽  
Electron Hole ◽  
Effective Separation ◽  
Reduced Graphene ◽  
Oxide Composites

The MoS2/rGO exhibits enhanced photocatalytic activity for degradation of RhB due to effective separation of photo-generated electron–hole pairs by heterointerface.

Effective removal of colourless pollutants and organic dyes by Ag@AgCl nanoparticle-modified CaSn(OH)6 composite under visible light irradiation

2017 ◽  
Vol 41 (13) ◽  
pp. 5334-5346 ◽  
Author(s):  
Chao Liang ◽  
Cheng-Gang Niu ◽  
Xiao-Ju Wen ◽  
Shi-Feng Yang ◽  
Mao-Cai Shen ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Organic Dyes ◽  
Light Irradiation ◽  
Electron Hole ◽  
Visible Light Absorption ◽  
Effective Removal ◽  
Agcl Nanoparticles

The Ag@AgCl nanoparticles could broaden visible-light absorption of pure CSH and depress the recombination of photoinduced electron–hole pairs.

scholarly journals Detection of electron tunneling across plasmonic nanoparticle–film junctions using nitrile vibrations

2017 ◽  
Vol 19 (8) ◽  
pp. 5786-5796 ◽  
Author(s):  
Hao Wang ◽  
Kun Yao ◽  
John A. Parkhill ◽  
Zachary D. Schultz
Keyword(s):  
Electric Fields ◽  
Quantum Tunneling ◽  
Electron Tunneling ◽  
Plasmonic Nanoparticle ◽  
Quantitative Indicator ◽  
Nanoparticle Film

Vibrational Stark shifts from nitriles provide a quantitative indicator of electric fields arising from plasmon-induced quantum tunneling effects.

scholarly journals Photoelectrochemical Studies on Metal-Doped Graphitic Carbon Nitride Nanostructures under Visible-Light Illumination

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 983 ◽  
Author(s):  
I. Neelakanta Reddy ◽  
N. Jayashree ◽  
V. Manjunath ◽  
Dongseob Kim ◽  
Jaesool Shim
Keyword(s):  
Charge Transfer ◽  
Visible Light ◽  
Light Absorption ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Electron Hole ◽  
Photoelectrochemical Activity ◽  
Catalytic Sites ◽  
Metal Doped

Recently, the engineering of optical bandgaps and morphological properties of graphitic carbon nitride (g-C3N4) has attracted significant research attention for photoelectrodes and environmental remediation owing to its low-cost synthesis, availability of raw materials, and thermal physical–chemical stability. However, the photoelectrochemical activity of g-C3N4-based photoelectrodes is considerably poor due to their high electron–hole recombination rate, poor conductivity, low quantum efficiency, and active catalytic sites. Synthesized Ni metal-doped g-C3N4 nanostructures can improve the light absorption property and considerably increase the electron–hole separation and charge transfer kinetics, thereby initiating exceptionally enhanced photoelectrochemical activity under visible-light irradiation. In the present study, Ni dopant material was found to evince a significant effect on the structural, morphological, and optical properties of g-C3N4 nanostructures. The optical bandgap of the synthesized photoelectrodes was varied from 2.53 to 2.18 eV with increasing Ni dopant concentration. The optimized 0.4 mol% Ni-doped g-C3N4 photoelectrode showed a noticeably improved six-fold photocurrent density compared to pure g-C3N4. The significant improvement in photoanode performance is attributable to the synergistic effects of enriched light absorption, enhanced charge transfer kinetics, photoelectrode/aqueous electrolyte interface, and additional active catalytic sites for photoelectrochemical activity.

A novel ternary MQDs/NCDs/TiO2 nanocomposite that collaborates with activated persulfate for efficient RhB degradation under visible light irradiation

2021 ◽  
Author(s):  
Qian Zhang ◽  
Han Zhao ◽  
Yuming Dong ◽  
Xiangmiao Zhu ◽  
Xiang Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Absorption ◽  
Absorption Capacity ◽  
Hole Transport ◽  
Light Irradiation ◽  
Pollutant Degradation ◽  
Electron Hole ◽  
Activated Persulfate

TiO2 nanosheets modified with dual MQDs/NCD quantum dots not only promote light absorption capacity and electron–hole transport but also collaborate well with activated persulfate for pollutant degradation.

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