Preparation of graphene-supported highly dispersed nickel nanoparticles for the improved generation of hydrogen from ball-milled LiBH4

2015 ◽  
Vol 5 (3) ◽  
pp. 1821-1828 ◽  
Author(s):  
Juan Xu ◽  
Yang Li ◽  
Jianyu Cao ◽  
Rongrong Meng ◽  
Wenchang Wang ◽  
...  
Keyword(s):  
Nickel Nanoparticles ◽  
Reduction Method ◽  
Thermal Reduction ◽  
Highly Dispersed

Highly-dispersed Ni/G catalysts were synthesized via a facile hydrogen thermal reduction method and utilized to enhance the de-/rehydrogenation properties of LiBH4.

Preparation of TiO2 (Au) Nanotubes by Hydrothermal Method for Photocatalytic Reduction of Cd2+ Ions

2014 ◽  
Vol 609-610 ◽  
pp. 375-381
Author(s):  
Chun Xiao Feng ◽  
Guang Qing Xu ◽  
Jun Lv ◽  
Zhi Xiang Zheng ◽  
Yu Cheng Wu
Keyword(s):  
Hydrothermal Method ◽  
Au Nanoparticles ◽  
Reduction Method ◽  
Photocatalytic Reduction ◽  
Photocatalytic Properties ◽  
Absorption Intensity ◽  
Reducing Ability ◽  
Highly Dispersed ◽  
Naoh Solution ◽  
Hydrothermal Reduction

Highly dispersed TiO2 nanotubes (TiO2-NTs) were synthesized via the reaction of anatase TiO2 powder with NaOH solution. Au nanoparticles of about 5 nm were deposited on the surface of TiO2-NTs with hydrothermal reduction method. The prepared nanocomposites were well characterized with TEM and XRD. Their photocatalytic properties and reducing ability were investigated by UV-Vis absorption and photocatalytic reduction of Cd2+ ions with different amount of TiO2-NTs and TiO2-NTs (Au) varying from 0.1g to 0.001g. The results from absorption patterns and AAS showed that the absorption intensity of TiO2-NTs (Au) was higher compared with that of TiO2-NTs. Moreover, the concentration of remanent Cd2+ (0.48mg/L) using TiO2-NTs (Au) was lower than that of Cd2+ (0.65mg/L) using TiO2-NTs.

Immobilized Recombinant Chitinase and its Inhibition Effect on Botrytis Cinerea

2014 ◽  
Vol 936 ◽  
pp. 674-680
Author(s):  
Na Zhang ◽  
Rui Xiang Yan ◽  
Wen Qiang Guan
Keyword(s):  
Reduction Method ◽  
Average Diameter ◽  
Thermal Reduction ◽  
Gray Mold ◽  
Magnetic Carrier ◽  
Reaction Conditions ◽  
Recombinant Chitinase ◽  
Crude Enzyme Solution ◽  
Infrared Spectrometer

To isolate recombinant chitinase quickly and boost its anti-fungi activities in vitro, functional magnetic nanometer carrier was used to immobilize recombinant chitinase from the crude enzyme solution and immobilized recombinant chitinase was applied to test whether it would inhibit the growth of gray mold from fruits. In this study, the carboxyl magnetic carrier was produced by solvent thermal reduction method and characterized by scanning electron microscope (SEM) and fourier transform infrared spectrometer (FTIR). Then, the carboxyl magnetic carrier activated by EDC/NHS was applied to immobilize recombinant chitinase and the immobilization efficiency was investigated by quantitative analysis. To obtain the highest immobilization efficiency, reaction conditions were optimized through combining different pH, temperature and reaction period. The results show that the surface of magnetic carrier was successfully carboxyl and the average diameter was 200nm. The immobilization efdiciency could reach the peak 64.43% after 7h reaction at the condition of pH 6 and 25°C. It also shows that immobilized recombinant chitinase can significantly inhibit the growth of gray mold isolated from table grape compared with the enzyme without immobilization with magnetic nanometer carrier.

Green synthesis of submicron copper powder with narrow particle size distribution via a simple methanol thermal reduction

2021 ◽  
Author(s):  
Xiaoping Chen ◽  
Jiaqi Fu ◽  
Jiangang Li ◽  
Bohong Chen ◽  
Lei Yang ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Green Synthesis ◽  
Size Distribution ◽  
Copper Powder ◽  
Reduction Method ◽  
Particle Distribution ◽  
Thermal Reduction ◽  
Narrow Particle Size Distribution

In this work, submicron copper powder with narrow particle distribution was synthesized via a simple methanol thermal reduction method without using any surfactants. Smaller copper powder with narrower particle size...

Color tunable emission from CaS:Cu+, Mn2+ rare-earth-free phosphors prepared by a simple carbon-thermal reduction method

2019 ◽  
Vol 779 ◽  
pp. 399-403 ◽  
Author(s):  
Xubo Tong ◽  
Jiaxin Yang ◽  
Pianpian Wu ◽  
Xinmin Zhang ◽  
Hyo Jin Seo
Keyword(s):  
Rare Earth ◽  
Reduction Method ◽  
Thermal Reduction ◽  
Color Tunable ◽  
Tunable Emission

The Preparation of Graphene via Thermal Reduction Method

2012 ◽  
Vol 557-559 ◽  
pp. 1539-1542
Author(s):  
Jian Fang Wang ◽  
Ya Nan Lv ◽  
Yin Long ◽  
Cheng An Tao ◽  
Hui Zhu
Keyword(s):  
Graphene Oxide ◽  
High Temperature ◽  
Smooth Surface ◽  
Reduction Method ◽  
Thermal Reduction ◽  
Thermal Reaction ◽  
Thermal Method ◽  
High Quality ◽  
Graphene Surface ◽  
Reduction Methods

In this paper, the graphene oxide reducing by photochemical-thermal reduction and high-temperature thermal reduction was studied to get qualified graphene and avoid the re-aggregation. The results show that graphene obtained by both of the two reduction methods all maintained the original well-layered morphology of the graphene oxide. The graphene had smooth surface and high quality as completely reduced by high-temperature thermal method. However, the reduction the photochemical-thermal reaction was not sufficient and caused many vesicles on the graphene surface due to the low temperature and the lack of reaction time.

Reduced Graphene Oxide Paper: Fabrication by a Green Thermal Reduction Method and Preliminary Study of its In Vitro Cytotoxicity

2017 ◽  
Vol 45 ◽  
pp. 199-207 ◽  
Author(s):  
Xin Wang ◽  
Peng Li ◽  
Claudia Luedecke ◽  
Qiang Zhang ◽  
Zan Wang ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Mammalian Cells ◽  
Reduction Method ◽  
Heating Temperature ◽  
Synthesis Method ◽  
Thermal Reduction ◽  
Graphene Films ◽  
Reduced Graphene

Graphene films have been intensively explored because of their unique mechanical and physicochemical properties for potential applications in field of tissue engineering and implants. However, for biomedical applications, it is necessary to fully understand the toxicity and biocompatibility of the prepared graphene films since different synthesis method might lead to different biological properties. Here we report a step-by-step thermal reduction method of preparing reduced graphene oxide (rGO) film directly on various substrates at low heating temperature (below about 200 °C) without requiring any chemical reduction agent like hydrazine or other reductants (therefore we call it green method). Slowly heating GO hydrosol that was coated on the surface of a glass cell-culture dish or inside of a polypropylene tube from room temperature to 60, 100, and 160 °C for 12 h, respectively, a shiny and flat surface without crumpled structure or tiny pores was formed. We peeled it off from the substrate to explore its cytotoxicity. The results exhibited that the rGO film was biocompatible with Cal-72 cell but against Escherichia coli bacteria. Our work confirmed that rGO film produced by the green reduction method is cytocompatible with mammalian cells, which makes this rGO film a promising material for tissue engineering scaffold or as a surface-modification coating of an implant.

scholarly journals Solvent-assisted thermal reduction of microcrystalline graphene oxide with excellent microwave absorption performance

RSC Advances ◽  
2018 ◽  
Vol 8 (28) ◽  
pp. 15315-15325 ◽  
Author(s):  
Chenbo Liao ◽  
Xukun Zhu ◽  
Wei Xie ◽  
Fangmei Zeng ◽  
Shihe Yi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Absorption Band ◽  
Microwave Absorption ◽  
Reduction Method ◽  
Thermal Reduction ◽  
Wide Absorption Band ◽  
Absorption Performance ◽  
Microwave Absorption Performance ◽  
High Absorption

Reduced microcrystalline graphene oxide (rGO-M), a novel absorber with high absorption, low reflection and a wide absorption band, was prepared from NMGMs using a solvent-assisted thermal reduction method.

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