In situ chemical reduction of the Ta3N5 quantum dots coupled TaON hollow spheres heterojunction photocatalyst for water oxidation

2012 ◽  
Vol 22 (41) ◽  
pp. 21972 ◽  
Author(s):  
Zheng Wang ◽  
Jungang Hou ◽  
Shuqiang Jiao ◽  
Kai Huang ◽  
Hongmin Zhu
Keyword(s):  
Quantum Dots ◽  
Water Oxidation ◽  
Chemical Reduction ◽  
Hollow Spheres

In Situ Visualization of Electrocatalytic Reaction Activity at Quantum Dots for Water Oxidation

2018 ◽  
Vol 90 (14) ◽  
pp. 8635-8641 ◽  
Author(s):  
Ying Chen ◽  
Jiaju Fu ◽  
Chen Cui ◽  
Dechen Jiang ◽  
Zixuan Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Water Oxidation ◽  
In Situ Visualization ◽  
Electrocatalytic Reaction

Plasmon-induced photoelectrochemical water oxidation enabled by in situ layer-by-layer construction of cascade charge transfer channel in multilayered photoanode

2018 ◽  
Vol 6 (48) ◽  
pp. 24686-24692 ◽  
Author(s):  
Zhiping Zeng ◽  
Tao Li ◽  
Yu-Bing Li ◽  
Xiao-Cheng Dai ◽  
Ming-Hui Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Water Splitting ◽  
Water Oxidation ◽  
Graphene Quantum Dots ◽  
Layer By Layer ◽  
Lbl Assembly ◽  
Transfer Channel ◽  
Photoelectrochemical Water Oxidation

Cascade charge transfer between graphene quantum dots and Ag nanocrystals in photoelectrochemical water splitting was finely regulated by layer-by-layer (LbL) assembly.

In situ formation of vanadium nitride quantum dots on N-doped carbon hollow spheres for superior lithium and sodium storage

2019 ◽  
Vol 7 (15) ◽  
pp. 9289-9296 ◽  
Author(s):  
Jun Yuan ◽  
Xiang Hu ◽  
Junxiang Chen ◽  
Yangjie Liu ◽  
Taizhong Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hollow Spheres ◽  
Vanadium Nitride ◽  
Storage Performance ◽  
In Situ Formation ◽  
Carbon Hollow Spheres ◽  
Sodium Storage

Vanadium nitride quantum dots within N-doped carbon hollow spheres exhibit excellent storage performance.

Enhanced visible-light photocatalytic activity of perylene diimide (PDI) supramolecular nanorods with Pt QDs in situ deposited.

2021 ◽  
Author(s):  
Di Liu ◽  
Liping CHEN ◽  
Wenbin Chen ◽  
Mengtao Qin ◽  
Siqi Wei
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Chemical Reduction ◽  
Perylene Diimide ◽  
Light Irradiation ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

Well-dispersed Pt quantum dots (QDs) was first to be successfully deposited on PDI supramolecular nanorods surface via a simple in situ chemical reduction. Under visible light irradiation, Pt QDs/PDI composites...

Functional Poly(p-Xylylene)s via Chemical Reduction of Poly(p-Phenylene Vinylene)s

2019 ◽  
Author(s):  
Ain Uddin ◽  
Weifan Sang ◽  
Yong Gao ◽  
Kyle Plunkett
Keyword(s):  
Film Formation ◽  
Chemical Reduction ◽  
Water Soluble ◽  
Phenylene Vinylene ◽  
Polymer Modification ◽  
Polymer Backbone ◽  
Crosslinking Process ◽  
Conducting Membranes ◽  
In Situ Crosslinking

The synthesis of poly(p-xylylene)s (PPXs) with sidechains containing alkyl bromide functionality, and their post-polymer modification, is described. The PPXs were prepared by a diimide hydrogenation of poly(p-phenylene vinylene)s (PPVs) that were originally synthesized by a Gilch polymerization. The polymer backbone reduction was carried out with hydrazine hydrate in toluene at 80 °C to provide polymers with the sidechain-containing bromide functionality intact. To demonstrate post-polymer modification of the sidechains, the resulting PPX polymers were modified with trimethylamine to form tetraalkylammonium ion functionality and were evaluated as anion conducting membranes. While PPX homopolymers containing tetralkylammonium ions were completely water soluble and not able to form valuable films, PPX copolymers containing mixed tetraalkylammonium ions and hydrophobic chains were capable of film formation and alkaline stability. In addition, an in situ crosslinking process that used N,N,N',N'-tetramethyl-1,6-hexanediamine during the tetraalkylammonium formation of brominated PPX polymers was also evaluated and gave reasonable films with conductivities of ~10 mS-cm-1.

Functional Poly(p-Xylylene)s via Chemical Reduction of Poly(p-Phenylene Vinylene)s

2019 ◽  
Author(s):  
Ain Uddin ◽  
Weifan Sang ◽  
Yong Gao ◽  
Kyle Plunkett
Keyword(s):  
Film Formation ◽  
Chemical Reduction ◽  
Water Soluble ◽  
Phenylene Vinylene ◽  
Polymer Modification ◽  
Polymer Backbone ◽  
Crosslinking Process ◽  
Conducting Membranes ◽  
In Situ Crosslinking

The synthesis of poly(p-xylylene)s (PPXs) with sidechains containing alkyl bromide functionality, and their post-polymer modification, is described. The PPXs were prepared by a diimide hydrogenation of poly(p-phenylene vinylene)s (PPVs) that were originally synthesized by a Gilch polymerization. The polymer backbone reduction was carried out with hydrazine hydrate in toluene at 80 °C to provide polymers with the sidechain-containing bromide functionality intact. To demonstrate post-polymer modification of the sidechains, the resulting PPX polymers were modified with trimethylamine to form tetraalkylammonium ion functionality and were evaluated as anion conducting membranes. While PPX homopolymers containing tetralkylammonium ions were completely water soluble and not able to form valuable films, PPX copolymers containing mixed tetraalkylammonium ions and hydrophobic chains were capable of film formation and alkaline stability. In addition, an in situ crosslinking process that used N,N,N',N'-tetramethyl-1,6-hexanediamine during the tetraalkylammonium formation of brominated PPX polymers was also evaluated and gave reasonable films with conductivities of ~10 mS-cm-1.

scholarly journals Carbon Nitride Quantum Dots Modified TiO2 Inverse Opal Photonic Crystal for Solving Indoor VOCs Pollution

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 464
Author(s):  
Jie Yu ◽  
Angel Caravaca ◽  
Chantal Guillard ◽  
Philippe Vernoux ◽  
Liang Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Nitride ◽  
Sol Gel ◽  
Green Energy ◽  
Inverse Opal ◽  
Oxidation Reactions ◽  
Composite Photocatalyst ◽  
Colloidal Photonic Crystals ◽  
Inverse Opal Structure

Indoor toxic volatile organic compounds (VOCs) pollution is a serious threat to people’s health and toluene is a typical representative. In this study, we developed a composite photocatalyst of carbon nitride quantum dots (CNQDs) in situ-doped TiO2 inverse opal TiO2 IO for efficient degradation of toluene. The catalyst was fabricated using a sol-gel method with colloidal photonic crystals as the template. The as-prepared catalyst exhibited excellent photocatalytic performance for degradation of toluene. After 6 h of simulated sunlight irradiation, 93% of toluene can be converted into non-toxic products CO2 and H2O, while only 37% of toluene is degraded over commercial P25 in the same condition. This greatly enhanced photocatalytic activity results from two aspects: (i) the inverse opal structure enhances the light harvesting while providing adequate surface area for effective oxidation reactions; (ii) the incorporation of CNQDs in the framework of TiO2 increases visible light absorption and promotes the separation of photo-generated charges. Collectively, highly efficient photocatalytic degradation of toluene has been achieved. In addition, it can be expanded to efficient degradation of organic pollutants in liquid phase such as phenol and Rhodamine B. This study provides a green, energy saving solution for indoor toxic VOCs removal as well as for the treatment of organic wastewater.

scholarly journals In situ evolution of surface Co2CrO4 to CoOOH/CrOOH by electrochemical method: Toward boosting electrocatalytic water oxidation

2021 ◽  
Vol 42 (7) ◽  
pp. 1096-1101 ◽  
Author(s):  
Jinxiu Zhao ◽  
Xiang Ren ◽  
Xu Sun ◽  
Yong Zhang ◽  
Qin Wei ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Electrochemical Method

In situ ligand exchange of thiol-capped CuInS2/ZnS quantum dots at growth stage without affecting luminescent characteristics

2011 ◽  
Vol 363 (2) ◽  
pp. 703-706 ◽  
Author(s):  
Hyunki Kim ◽  
Minwon Suh ◽  
Byung-Hwa Kwon ◽  
Dong Seon Jang ◽  
Sung Wook Kim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ligand Exchange ◽  
Growth Stage
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