Modulating Unidirectional Charge Transfer via in Situ Etching-Accompanied Layer-By-Layer Self-Assembly toward Multifarious Photoredox Catalysis

2019 ◽  
Vol 123 (46) ◽  
pp. 28066-28080 ◽  
Author(s):  
Hua-Jian Lin ◽  
Tao Li ◽  
Ming-Hui Huang ◽  
Xiao-Cheng Dai ◽  
Yu-Bing Li ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Layer By Layer ◽  
Photoredox Catalysis

scholarly journals An In-Situ Reaction Route to Molecular Level Dispersed Bisimide and ZnO Nanorod Hybrids with Efficient Photo-Induced Charge Transfer

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Chunzheng Lv ◽  
Lirong He ◽  
Jiahong Tang ◽  
Feng Yang ◽  
Chuhong Zhang
Keyword(s):  
Charge Transfer ◽  
Electric Field ◽  
Self Assembly ◽  
Molecular Level ◽  
Surface Photovoltage ◽  
Zno Nanorod ◽  
In Situ Reaction ◽  
Perylene Bisimide ◽  
Induced Charge

AbstractAs an important photoconductive hybrid material, perylene/ZnO has attracted tremendous attention for photovoltaic-related applications, but generally faces a great challenge to design molecular level dispersed perylenes/ZnO nanohybrids due to easy phase separation between perylenes and ZnO nanocrystals. In this work, we reported an in-situ reaction method to prepare molecular level dispersed H-aggregates of perylene bisimide/ZnO nanorod hybrids. Surface photovoltage and electric field-induced surface photovoltage spectrum show that the photovoltage intensities of nanorod hybrids increased dramatically for 100 times compared with that of pristine perylene bisimide. The enhancement of photovoltage intensities resulting from two aspects: (1) the photo-generated electrons transfer from perylene bisimide to ZnO nanorod due to the electric field formed on the interface of perylene bisimide/ZnO; (2) the H-aggregates of perylene bisimide in ZnO nanorod composites, which is beneficial for photo-generated charge separation and transportation. The introduction of ordered self-assembly thiol-functionalized perylene-3,4,9,10-tetracarboxylic diimide (T-PTCDI)/ ZnO nanorod composites induces a significant improvement in incident photo-to-electron conversion efficiency. This work provides a novel mentality to boost photo-induced charge transfer efficiency, which brings new inspiration for the preparation of the highly efficient solar cell.

Ceramic tubular MOF hybrid membrane fabricated through in situ layer-by-layer self-assembly for nanofiltration

AIChE Journal ◽  
2015 ◽  
Vol 62 (2) ◽  
pp. 538-546 ◽  
Author(s):  
Naixin Wang ◽  
Tianjiao Liu ◽  
Hongpan Shen ◽  
Shulan Ji ◽  
Jian-Rong Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
Hybrid Membrane ◽  
Layer By Layer

Self-Assembly of Alkali Lignin in Tetrahydrofuran

2012 ◽  
Vol 550-553 ◽  
pp. 57-61
Author(s):  
Hao Li ◽  
Yong Hong Deng ◽  
Kai Huang
Keyword(s):  
Charge Transfer ◽  
Electrostatic Interaction ◽  
Self Assembly ◽  
The Self ◽  
Charge Transfer Complexes ◽  
Layer By Layer ◽  
Alkali Lignin ◽  
Higher Temperature ◽  
Effects Of Temperature

Alkali lignin (AL) was used as a polyanion to form layer-by-layer self-assembled film with PDAC as a polycation. The effects of temperature and concentration on the adsorption characteristics of AL were investigated. Iodine was added into AL solutions to study the role of π-π interaction in self-assembly of AL and PDAC. Results show that the self-assembly of AL/PDAC is mainly driven by π-π interaction and electrostatic interaction. A higher temperature or a larger concentration can enhance the aggregation of lignin. I2 can form lignin–iodine charge–transfer complexes with AL to reduce the degree of aggregation of AL, so the adsorbed amount of AL decreases significantly with increasing iodine contents.

Bioinspired Shear-Flow-Driven Layer-by-Layer in Situ Self-Assembly

ACS Nano ◽  
2019 ◽  
Author(s):  
Chuanjiang He ◽  
Tingting Ye ◽  
Wenqi Teng ◽  
Zhi Fang ◽  
Wei-Shuyi Ruan ◽  
...  
Keyword(s):  
Shear Flow ◽  
Self Assembly ◽  
Layer By Layer

General self-assembly of metal/metal chalcogenide heterostructures initiated by a surface linker: modulating tunable charge flow toward versatile photoredox catalysis

2019 ◽  
Vol 7 (37) ◽  
pp. 21182-21194 ◽  
Author(s):  
Tao Li ◽  
Ming-Hui Huang ◽  
Yu-Bing Li ◽  
Xiao-Cheng Dai ◽  
Yunhui He ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Photoredox Catalysis ◽  
Interfacial Charge Transfer ◽  
Metal Chalcogenide ◽  
Assembly Strategy ◽  
Metal Metal ◽  
Surface Ligand ◽  
Charge Flow ◽  
Interfacial Charge

Interfacial charge transfer over metal/metal chalcogenide heterostructures was finely tuned by a facile, green, scalable, and simple yet efficient surface ligand-triggered self-assembly strategy for multifarious photoredox catalysis.

Carbon Nanotubes-Assisted Fabrication of TiO2 Nanocomposite Film for Optimum Electrochromic Application

2014 ◽  
Vol 989-994 ◽  
pp. 789-792
Author(s):  
Shu Ping Liu ◽  
Wei Wang ◽  
Lin Lin Cui ◽  
Hua Nan Guan
Keyword(s):  
Carbon Nanotubes ◽  
Self Assembly ◽  
Multilayer Film ◽  
Great Promise ◽  
Layer By Layer ◽  
Electrochromic Devices ◽  
Optical Contrast ◽  
Coloration Efficiency ◽  
Assembly Method

Electrochromic composite film consisting of TiO2, chitosan (CS) and carbon nanotubes (CNTs) were fabricated on quartz and FTO substrates by the layer-by-layer self-assembly method (LbL). The multilayer film was characterized by UV-vis spectrum, scanning electron microscopy (SEM), cyclic voltammetry (CV) and chronoamperometric (CA) and in situ spectral electrochemicalmeasurements. The composite material shows high electrochromic performance, with the optical contrast of 11.5% and coloration efficiency of 21.7 cm2/C at 800 nm. The results indicate great promise for the TiO2-based film as a potential material in electrochromic devices.

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.

Layer-by-Layer Self-Assembly of Metal/Metal Oxide Superstructures: Self-Etching Enables Boosted Photoredox Catalysis

2020 ◽  
Vol 59 (6) ◽  
pp. 4129-4139 ◽  
Author(s):  
Hua-Jian Lin ◽  
Shuai Xu ◽  
Xiao-Yan Fu ◽  
Zhi-Quan Wei ◽  
Ming-Hui Huang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Self Assembly ◽  
Layer By Layer ◽  
Photoredox Catalysis ◽  
Metal Metal

Preparation of Poly(diallydimethyl ammonium chloride) (PDDA)/Au Nanocomposite Film by In Situ Electrochemical Reduction and its Electrocatalytic Properties

2010 ◽  
Vol 123-125 ◽  
pp. 189-192
Author(s):  
Hong Wei Shi ◽  
Li Zhang ◽  
Cong Wang ◽  
Ke Ying Zhang
Keyword(s):  
Electrochemical Reduction ◽  
Ammonium Chloride ◽  
Photoelectron Spectroscopy ◽  
Self Assembly ◽  
Composite Films ◽  
Nanocomposite Films ◽  
Layer By Layer ◽  
X Ray ◽  
Assembly Technique

Nanocomposite films containing Au nanoparticles were fabricated by alternating adsorption of poly(diallydimethyl ammonium chloride) (PDDA) and HAuCl4 using layer-by-layer self-assembly technique and subsequent in situ electrochemical reduction of the AuCl4- ions. The composition and properties of the composite films were characterized by ultraviolet-visible spectroscopy (UV-vis), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV).The UV-vis characteristic absorbances of PDDA and Au increase almost linearly with the number of bilayers, which suggests a progressive deposition with almost an equal amount of the PDDA and Au in each cycle. X-ray photoelectron spectroscopy further confirms the presence of the main components (such as PDDA and Au) of the nanocomposite films. Furthermore, the nanocomposite films also exhibit good electrocatalytic activity for the oxidation of ascorbic acid (AA), which may be used in electrochemical biosensors.

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