Synergistic Effects of Surface Passivation and Charge Separation to Improve Photo-electrochemical Performance of BiOI Nanoflakes by Au Nanoparticle Decoration

2021 ◽  
Vol 13 (4) ◽  
pp. 5721-5730
Author(s):  
An-Mi Chang ◽  
Yu-Hung Chen ◽  
Chien-Chih Lai ◽  
Ying-Chih Pu
Keyword(s):  
Electrochemical Performance ◽  
Charge Separation ◽  
Surface Passivation ◽  
Synergistic Effects ◽  
Au Nanoparticle

Facile synthesis of novel Roe-like TiO2 hollow nanospheres with mesoporous cavity for improved photocatalytic activity

2017 ◽  
Vol 10 (03) ◽  
pp. 1750028 ◽  
Author(s):  
Yan Zhu ◽  
Xiaoxia Yan ◽  
Yuanxin Ge ◽  
Shumin Wang ◽  
Dongmei Deng ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Self Assembly ◽  
Charge Separation ◽  
Synergistic Effects ◽  
Assembly Process ◽  
Hollow Nanospheres ◽  
Facile Synthesis

A facile approach was developed to synthesize novel Roe-like TiO2 hollow nanospheres via a template-assisted self-assembly process. These TiO2 nanospheres possessing mesoporous cavity manifest significantly improved photocatalytic activity owing to the synergistic effects of increased charge separation, more efficient use of the light and specific surface area.

scholarly journals TiO2 and Au-TiO2 Nanomaterials for Rapid Photocatalytic Degradation of Antibiotic Residues in Aquaculture Wastewater

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2434 ◽  
Author(s):  
Tho Chau Minh Vinh Do ◽  
Duy Quoc Nguyen ◽  
Kien Trung Nguyen ◽  
Phuoc Huu Le
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Synergistic Effects ◽  
Chemical Reduction ◽  
Anatase Phase ◽  
Au Nanoparticle ◽  
Nanotube Arrays ◽  
Antibiotic Residues ◽  
Au Nps ◽  
Aquaculture Wastewater

Antibiotic residues in aquaculture wastewater are considered as an emerging environmental problem, as they are not efficiently removed in wastewater treatment plants. To address this issue, we fabricated TiO2 nanotube arrays (TNAs), TiO2 nanowires on nanotube arrays (TNWs/TNAs), Au nanoparticle (NP)-decorated-TNAs, and TNWs/TNAs, which were applied for assessing the photocatalytic degradation of eight antibiotics, simultaneously. The TNAs and TNWs/TNAs were synthesized by anodization using an aqueous NH4F/ethylene glycol solution. Au NPs were synthesized by chemical reduction method, and used to decorate on TNAs and TNWs/TNAs. All the TiO2 nanostructures exhibited anatase phase and well-defined morphology. The photocatalytic performance of TNAs, TNWs/TNAs, Au-TNAs and Au-TNWs/TNAs was studied by monitoring the degradation of amoxicillin, ampicillin, doxycycline, oxytetracycline, lincomycin, vancomycin, sulfamethazine, and sulfamethoxazole under ultraviolet (UV)-visible (VIS), or VIS illumination by LC-MS/MS method. All the four kinds of nanomaterials degraded the antibiotics effectively and rapidly, in which most antibiotics were removed completely after 20 min treatment. The Au-TNWs/TNAs exhibited the highest photocatalytic activity in degradation of the eight antibiotics. For example, reaction rate constants of Au-TNWs/TNAs for degradation of lincomycin reached 0.26 min−1 and 0.096 min−1 under UV-VIS and VIS irradiation, respectively; and they were even higher for the other antibiotics. The excellent photocatalytic activity of Au-TNWs/TNAs was attributed to the synergistic effects of: (1) The larger surface area of TNWs/TNAs as compared to TNAs, and (2) surface plasmonic effect in Au NPs to enhance the visible light harvesting.

Enhanced photocatalytic performance at a Au/N–TiO2hollow nanowire array by a combination of light scattering and reduced recombination

2014 ◽  
Vol 16 (33) ◽  
pp. 17748-17755 ◽  
Author(s):  
P. Sudhagar ◽  
Anitha Devadoss ◽  
Taeseup Song ◽  
P. Lakshmipathiraj ◽  
Hyungkyu Han ◽  
...  
Keyword(s):  
Light Scattering ◽  
Visible Light ◽  
Charge Separation ◽  
Nitrogen Doping ◽  
Photocatalytic Performance ◽  
Nanowire Array ◽  
Au Nanoparticle ◽  
Electron Hole ◽  
Hole Charge

Maximizing the Au nanoparticle decoration on TiO2nanowire through nitrogen doping for simultaneous enhancement in visible light scattering and electron–hole charge separation.

A multi-level structure bio-carbon composite with polyaniline for high performance supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (16) ◽  
pp. 12230-12236 ◽  
Author(s):  
Guofu Ma ◽  
Haiping Wang ◽  
Kanjun Sun ◽  
Hui Peng ◽  
Yajuan Wu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Electrode Materials ◽  
Synergistic Effects ◽  
Level Structure ◽  
Carbon Composite ◽  
Multi Level

The electrochemical performance of electrode materials can be enhanced by the synergistic effects of polyaniline and multi-level structured bio-carbon.

Binary zinc–cobalt metal–organic framework derived mesoporous ZnCo2O4@NC polyhedron as a high-performance lithium-ion battery anode

2020 ◽  
Vol 49 (40) ◽  
pp. 14237-14242 ◽  
Author(s):  
Rui Sun ◽  
Zhaoxia Qin ◽  
Zhiyong Li ◽  
Haosen Fan ◽  
Shengjun Lu
Keyword(s):  
Electrochemical Performance ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Synergistic Effects ◽  
Metal Organic Framework ◽  
Lithium Ion ◽  
Cobalt Metal ◽  
Metal Organic ◽  
Battery Anode

Ternary transition metal oxides have attracted increasing attention due to their many merits, and will enhance electrochemical performance via the synergistic effects of the different single metal oxides.

scholarly journals Atmospheric Pressure Tornado Plasma Jet of Polydopamine Coating on Graphite Felt for Improving Electrochemical Performance in Vanadium Redox Flow Batteries

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 627
Author(s):  
Song-Yu Chen ◽  
Yu-Lin Kuo ◽  
Yao-Ming Wang ◽  
Wei-Mau Hsu ◽  
Tzu-Hsuan Chien ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Atmospheric Pressure ◽  
Active Sites ◽  
Synergistic Effects ◽  
Substrate Surface ◽  
Polymeric Materials ◽  
Plasma Jet ◽  
Vanadium Redox Flow Battery ◽  
Graphite Felt ◽  
Vanadium Redox

The intrinsic hydrophobicity of graphite felt (GF) is typically altered for the purpose of the surface wettability and providing active sites for the enhancement of electrochemical performance. In this work, commercial GF is used as the electrodes. The GF electrode with a coated-polydopamine catalyst is achieved to enhance the electrocatalytic activity of GF for the redox reaction of vanadium ions in vanadium redox flow battery (VRFB). Materials characteristics proved that a facile coating via atmospheric pressure plasma jet (APPJ) to alter the surface superhydrophilicity and to deposit polydopamine on GF for providing the more active sites is feasibly achieved. Due to the synergistic effects of the presence of more active sites on the superhydrophilic surface of modified electrodes, the electrochemical performance toward VO2+/VO2+ reaction was evidently improved. We believed that using the APPJ technique as a coating method for electrocatalyst preparation offers the oxygen-containing functional groups on the substrate surface on giving a hydrogen bonding with the grafted functional polymeric materials.

scholarly journals Improved electrochemical performance of a LiCoO2/MCMB cell by regulating fluorinated electrolytes

RSC Advances ◽  
2021 ◽  
Vol 11 (49) ◽  
pp. 30763-30770
Author(s):  
Longgui Peng ◽  
Qirui He ◽  
Long He ◽  
Hai Lu ◽  
Fubao Zeng ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Voltage ◽  
Surface Passivation ◽  
Full Cell

A novel perfluorinated electrolyte catering for the high-voltage LCO/MCMB full cell offers excellent oxidation durability and favorable surface passivation on both electrodes.

Nd2O3 encapsulation-assisted surface passivation of Ni-rich LiNi0.8Co0.1Mn0.1O2 active material and its electrochemical performance

2019 ◽  
Vol 325 ◽  
pp. 134889 ◽  
Author(s):  
Jie Zhu ◽  
Guolin Cao ◽  
Yunjiao Li ◽  
Shilei Wang ◽  
Shiyi Deng ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Surface Passivation ◽  
Active Material
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