Surface modification of graphene oxide via noncovalent functionalization with porphyrins for selective photocatalytic oxidation of alcohols

2020 ◽  
Vol 44 (20) ◽  
pp. 8264-8272 ◽  
Author(s):  
Tossapong Phuangburee ◽  
Dmytro Solonenko ◽  
Nukorn Plainpan ◽  
Patchanita Thamyongkit ◽  
Dietrich R. T. Zahn ◽  
...  
Keyword(s):  
Surface Modification ◽  
Graphene Oxide ◽  
Self Assembly ◽  
Crucial Role ◽  
Photocatalytic Oxidation ◽  
Noncovalent Interactions ◽  
Assembly Process ◽  
Oxidation Of Alcohols ◽  
Photocatalytic Activities ◽  
Noncovalent Functionalization

GO–porphyrin composites were simply prepared by a self-assembly process. The noncovalent interactions between the porphyrins and oxygen-containing functional groups on GO play a crucial role in controlling their photocatalytic activities.

Controllable Synthesis of Cobalt Porphyrin Nanocrystals through Micelle Confinement Self-Assembly

MRS Advances ◽  
2020 ◽  
Vol 5 (42) ◽  
pp. 2147-2155
Author(s):  
Sudi Chen ◽  
Xitong Ren ◽  
Shufang Tian ◽  
Jiajie Sun ◽  
Feng Bai
Keyword(s):  
Self Assembly ◽  
Water Oxidation ◽  
Separation Efficiency ◽  
Noncovalent Interactions ◽  
Building Blocks ◽  
The Self ◽  
Hexagonal Prism ◽  
Assembly Process ◽  
Surfactant Micelles ◽  
Cobalt Porphyrin

AbstractThe self-assembly of optically active building blocks into functional nanocrystals as high-activity photocatalysts is a key in the field of photocatalysis. Cobalt porphyrin with abundant catalytic properties is extensively studied in photocatalytic water oxidation and CO2 reduction. Here, we present the fabrication of cobalt porphyrin nanocrystals through a surfactant-assisted interfacial self-assembly process using Co-tetra(4-pyridyl) porphyrin as building block. The self-assembly process relies on the combined noncovalent interactions such as π-π stacking and axial Co-N coordination between individual porphyrin molecules within surfactant micelles. Tuning different reaction conditions (temperature, the ratio of co-solvent DMF) and types of surfactant, various nanocrystals with well-defined 1D to 3D morphologies such as nanowires, nanorods and nano hexagonal prism were obtained. Due to the ordered accumulation of molecules, the nanocrystals exhibit the properties of the enhanced capability of visible light capture and can conduce to improve the transport and separation efficiency of the photogenerated carriers, which is important for photocatalysis. Further studies of photocatalytic CO2 reduction are being performed to address the relationship between the size and shape of the nanocrystals with the photocatalytic activity.

A Double Self-Assembly Process for Versatile Reduced-Graphene-Oxide Layer Deposition and Conformal Coating on 3D Structures

2017 ◽  
Vol 4 (23) ◽  
pp. 1700758 ◽  
Author(s):  
Guobin Jia ◽  
Jonathan Plentz ◽  
Martin Presselt ◽  
Jan Dellith ◽  
Andrea Dellith ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Layer ◽  
Reduced Graphene Oxide ◽  
Self Assembly ◽  
Assembly Process ◽  
3D Structures ◽  
Conformal Coating ◽  
Layer Deposition ◽  
Reduced Graphene

scholarly journals Variable self-assembly and in situ host–guest reaction of beta-cyclodextrin-modified graphene oxide composite Langmuir films with azobenzene compounds

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 41043-41051 ◽  
Author(s):  
Yagui Gao ◽  
Tifeng Jiao ◽  
Kai Ma ◽  
Ruirui Xing ◽  
Lexin Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Self Assembly ◽  
Langmuir Films ◽  
Assembly Process ◽  
Oxide Composite ◽  
Beta Cyclodextrin ◽  
Modified Graphene Oxide ◽  
Modified Graphene

Different composite Langmuir films (GO–CD/N-Azo and GO–CD/PAA-Azo) are prepared via simple interfacial self-assembly process and host–guest reaction, demonstrating variable self-assembly for wide applications.

scholarly journals Synthesis of CdS-loaded (CuC10H26N6)3(PW12O40)2 for enhanced photocatalytic degradation of tetracycline under simulated solar light irradiation

RSC Advances ◽  
2020 ◽  
Vol 10 (61) ◽  
pp. 37072-37079 ◽  
Author(s):  
Feng Li ◽  
Zhuomin Qiang ◽  
Shunqiang Chen ◽  
Jianyu Wei ◽  
Taohai Li ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Self Assembly ◽  
Light Irradiation ◽  
Solar Light ◽  
Assembly Process ◽  
One Pot ◽  
Heterojunction Structure ◽  
Simulated Solar Light ◽  
Solar Light Irradiation ◽  
Photocatalytic Activities

We demonstrated the incorporation of (CuC12H30N6)2+ into the a Keggin type H3PW12O40 by a simple one-pot self-assembly process. A heterojunction structure was constructed by introducing CdS which has high photocatalytic activities.

Fabrication of Fe3O4@reduced graphene oxide composite via novel colloid electrostatic self-assembly process for removal of contaminants from water

2015 ◽  
Vol 3 (2) ◽  
pp. 832-839 ◽  
Author(s):  
Jie Ding ◽  
Baojun Li ◽  
Yushan Liu ◽  
Xiaoshe Yan ◽  
Sha Zeng ◽  
...  
Keyword(s):  
Waste Water ◽  
Graphene Oxide ◽  
Water Treatment ◽  
Reduced Graphene Oxide ◽  
Self Assembly ◽  
Waste Water Treatment ◽  
Assembly Process ◽  
Oxide Composite ◽  
Reduced Graphene ◽  
Potential Applications

Fe3O4@reduced graphene oxide composite (FGNC) was synthesised, and for rhodamine B (RhB) and As5+ removal, the excellent behavior of FGNC highlights 3 potential applications in waste water treatment.

Versatile self-assembled graphene oxide membranes obtained under ambient conditions by using a water–ethanol suspension

2017 ◽  
Vol 5 (5) ◽  
pp. 2132-2142 ◽  
Author(s):  
Liviu Cosmin Cotet ◽  
Klára Magyari ◽  
Milica Todea ◽  
Mircea Cristian Dudescu ◽  
Virginia Danciu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Self Assembly ◽  
Low Cost ◽  
Assembly Process ◽  
Ambient Conditions ◽  
Free Standing ◽  
Air Liquid Interface ◽  
Oxide Membranes ◽  
Ethanol Fraction ◽  
Graphene Oxide Membranes

The study reports a low cost and scalable pathway for preparing free-standing GO membranes by a self-assembly process under ambient conditions at an air–liquid interface of an isopycnic sorted GO water–ethanol fraction.

scholarly journals Three-dimensional reduced graphene oxide aerogel stabilizes molybdenum trioxide with enhanced photocatalytic activity for dye degradation

RSC Advances ◽  
2019 ◽  
Vol 9 (64) ◽  
pp. 37573-37583 ◽  
Author(s):  
Ting Wu ◽  
Bo Zhang ◽  
Zhimin Wu ◽  
Jinglin Zhang ◽  
Huidi Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Self Assembly ◽  
Molybdenum Trioxide ◽  
Dye Degradation ◽  
Three Dimensional ◽  
Assembly Process ◽  
Reduced Graphene ◽  
Reduced Graphene Oxide Aerogel ◽  
Graphene Oxide Aerogel

By using three-dimensional reduced graphene oxide (rGO) aerogel as a carrier for molybdenum trioxide (MoO3), a series of rGO-MoO3 aerogels were synthesized by a self-assembly process.

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