Photoredox catalysis over graphene aerogel-supported composites

2018 ◽  
Vol 6 (11) ◽  
pp. 4590-4604 ◽  
Author(s):  
Kang-Qiang Lu ◽  
Xin Xin ◽  
Nan Zhang ◽  
Zi-Rong Tang ◽  
Yi-Jun Xu
Keyword(s):  
Solar Energy ◽  
Physicochemical Properties ◽  
Porous Structure ◽  
Three Dimensional ◽  
Research Interest ◽  
Intrinsic Properties ◽  
Graphene Aerogel ◽  
Efficient Utilization ◽  
3D Graphene ◽  
Structure Characteristics

Three-dimensional (3D) graphene aerogels, by virtue of their unique physicochemical properties, which result from the intrinsic properties of graphene and 3D porous structure characteristics, have attracted ever-increasing research interest in the field of photocatalysis for the sake of efficient utilization of solar energy.

Graphene aerogel-supported and graphene quantum dots-modified γ-MnOOH nanotubes as a highly efficient electrocatalyst for oxygen reduction reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (49) ◽  
pp. 43116-43126 ◽  
Author(s):  
Yisi Liu ◽  
Wenzhang Li ◽  
Jie Li ◽  
Haibo Shen ◽  
Yaomin Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Graphene Quantum Dots ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Graphene Aerogel ◽  
3D Graphene ◽  
Highly Efficient

In this work, we demonstrate a facile strategy to synthesize a novel three-dimensional (3D) graphene aerogel-supported and graphene quantum dots-modified γ-MnOOH nanotubes as a highly efficient electrocatalyst.

3D graphene aerogel-supported copper azide nanoparticles as primary explosive with excellent initiation performance

2021 ◽  
pp. 2140016
Author(s):  
Lei Zhang ◽  
Jianhua Chen ◽  
Dongxiao Fu ◽  
Feipeng Lu ◽  
Yanlan Wang ◽  
...  
Keyword(s):  
Ignition Time ◽  
Three Dimensional ◽  
High Energy ◽  
Input Energy ◽  
Graphene Aerogel ◽  
3D Graphene ◽  
Ignition Voltage ◽  
Gas Ignition ◽  
Thermal Stability Of

Copper azide (CA), a high energy primary explosive, had been investigated with various supporter materials to reduce its sensitivity characteristics. However, effective supporter had not been designed to fully reduce CAs sensitivity characteristics. Hence, we presented a three-dimensional (3D) graphene aerogel-supported CA (CA-GAs) strategy to meet those needs. CA-GAs was prepared using 3D GA as the framework to uniformly grip CA. The SEM and XRD measurements revealed that CA nanoparticles were fully dispersed on GAs, the in-situ azidation reaction of Cu precursor and CAs crystalline structure were not affected by GAs. DSC further verified the thermal stability of CA-GAs. Moreover, electrostatic ignition experiment was employed to investigate CA-GAs’ ignition time, input energy, and electrical ignition performance. Those results showed that CA-GAs could be reliably detonated by a 3.5 [Formula: see text] SCB, the average electric ignition voltage, ignition time, and input energy of CA-GAs were 19.125 V, 21 [Formula: see text]s, and 0.56 mJ, respectively. All these results illustrated that GAs was an effective supporter for the stabilization of CA.

scholarly journals Determination of six organophosphorus pesticides in water samples by three-dimensional graphene aerogel-based solid-phase extraction combined with gas chromatography/mass spectrometry

RSC Advances ◽  
2018 ◽  
Vol 8 (19) ◽  
pp. 10277-10283 ◽  
Author(s):  
P. Sun ◽  
Y. L. Gao ◽  
C. Xu ◽  
Y. F. Lian
Keyword(s):  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Chemical Reduction ◽  
Three Dimensional ◽  
Gas Chromatography Mass Spectrometry ◽  
Graphene Aerogel ◽  
3D Graphene ◽  
Pesticides In Water ◽  
Drying Treatment

3D graphene aerogel fabricated via chemical reduction followed by freeze-drying treatment was used as SPE sorbent to extract OPPs from water sample.

One-pot hydrothermal synthesis of platinum nanoparticle-decorated three-dimensional nitrogen-doped graphene aerogel as a highly efficient electrocatalyst for methanol oxidation

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 69973-69976 ◽  
Author(s):  
Xuan Zhang ◽  
Nan Hao ◽  
Xiaoya Dong ◽  
Saibo Chen ◽  
Zhou Zhou ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Three Dimensional ◽  
Graphene Aerogel ◽  
One Pot ◽  
Platinum Nanoparticle ◽  
3D Graphene ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Hydrothermal Approach

Pt nanoparticle-decorated nitrogen-doped 3D graphene aerogel (PtNPs/3DNGA) composites were prepared through a one-pot hydrothermal approach and show superior catalytic activity in methanol oxidation.

Self‐Assembled Three‐Dimensional Graphene Aerogel with an Interconnected Porous Structure for Lithium‐Ion Batteries

2019 ◽  
Vol 6 (10) ◽  
pp. 2698-2706 ◽  
Author(s):  
Liang‐ai Huang ◽  
Zhishun He ◽  
Jianfeng Guo ◽  
Shi‐en Pei ◽  
Haibo Shao ◽  
...  
Keyword(s):  
Porous Structure ◽  
Lithium Ion Batteries ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Graphene Aerogel ◽  
Self Assembled

Integration of network-like porous NiMoO4 nanoarchitectures assembled with ultrathin mesoporous nanosheets on three-dimensional graphene foam for highly reversible lithium storage

2015 ◽  
Vol 3 (26) ◽  
pp. 13691-13698 ◽  
Author(s):  
Bo Wang ◽  
Songmei Li ◽  
Xiaoyu Wu ◽  
Wenming Tian ◽  
Jianhua Liu ◽  
...  
Keyword(s):  
Porous Structure ◽  
Three Dimensional ◽  
Lithium Storage ◽  
Graphene Foam ◽  
3D Graphene

Interconnected ultrathin mesoporous NiMoO4 nanosheets with a network-like porous structure supported on a 3D graphene network for highly reversible lithium storage.

3D graphene oxide supramolecular hybrid hydrogel with well-ordered interior microstructure prepared by a host–guest inclusion-induced self-assembly strategy

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 94723-94730 ◽  
Author(s):  
Wei Ha ◽  
Jing Yu ◽  
Juan Chen ◽  
Yan-ping Shi
Keyword(s):  
Graphene Oxide ◽  
Porous Structure ◽  
Self Assembly ◽  
Three Dimensional ◽  
Supramolecular Hydrogel ◽  
Hybrid Hydrogel ◽  
3D Graphene ◽  
Assembly Strategy

A three-dimensional self-assembly strategy for constructing graphene oxide hybrid supramolecular hydrogel with regular porous structure was developed.

scholarly journals Is Dialdehyde Chitosan a Good Substance to Modify Physicochemical Properties of Biopolymeric Materials?

2021 ◽  
Vol 22 (7) ◽  
pp. 3391
Author(s):  
Sylwia Grabska-Zielińska ◽  
Alina Sionkowska ◽  
Ewa Olewnik-Kruszkowska ◽  
Katarzyna Reczyńska ◽  
Elżbieta Pamuła
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Physicochemical Properties ◽  
Silk Fibroin ◽  
Three Dimensional ◽  
Microscopy Imaging ◽  
Maximum Deformation ◽  
One Step ◽  
Chitosan Blends ◽  
Fourier Transfer Infrared Spectroscopy

The aim of this work was to compare physicochemical properties of three dimensional scaffolds based on silk fibroin, collagen and chitosan blends, cross-linked with dialdehyde starch (DAS) and dialdehyde chitosan (DAC). DAS was commercially available, while DAC was obtained by one-step synthesis. Structure and physicochemical properties of the materials were characterized using Fourier transfer infrared spectroscopy with attenuated total reflectance device (FTIR-ATR), swelling behavior and water content measurements, porosity and density observations, scanning electron microscopy imaging (SEM), mechanical properties evaluation and thermogravimetric analysis. Metabolic activity with AlamarBlue assay and live/dead fluorescence staining were performed to evaluate the cytocompatibility of the obtained materials with MG-63 osteoblast-like cells. The results showed that the properties of the scaffolds based on silk fibroin, collagen and chitosan can be modified by chemical cross-linking with DAS and DAC. It was found that DAS and DAC have different influence on the properties of biopolymeric scaffolds. Materials cross-linked with DAS were characterized by higher swelling ability (~4000% for DAS cross-linked materials; ~2500% for DAC cross-linked materials), they had lower density (Coll/CTS/30SF scaffold cross-linked with DAS: 21.8 ± 2.4 g/cm3; cross-linked with DAC: 14.6 ± 0.7 g/cm3) and lower mechanical properties (maximum deformation for DAC cross-linked scaffolds was about 69%; for DAS cross-linked scaffolds it was in the range of 12.67 ± 1.51% and 19.83 ± 1.30%) in comparison to materials cross-linked with DAC. Additionally, scaffolds cross-linked with DAS exhibited higher biocompatibility than those cross-linked with DAC. However, the obtained results showed that both types of scaffolds can provide the support required in regenerative medicine and tissue engineering. The scaffolds presented in the present work can be potentially used in bone tissue engineering to facilitate healing of small bone defects.

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