Synthesis and catalytic performance of graphene oxide-Au nanorings composites

2019 ◽  
Vol 12 (03) ◽  
pp. 1950028 ◽  
Author(s):  
Tong Shen ◽  
Zhong Li ◽  
Yue Jiang ◽  
Zai-Gang Luo
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Rate Constant ◽  
Sodium Borohydride ◽  
Catalytic Performance ◽  
Hybrid Structure ◽  
In Situ Synthesis ◽  
Galvanic Replacement ◽  
Hybrid Nanomaterial

A simple and facile method is described for the in situ synthesis of graphene oxide-Ag nanoplates (GO-AgNPs) hybrid structure and then served as sacrificial templates for producing graphene oxide-Au nanorings (GO-AuNRs) by galvanic replacement taken place on the GO surface. The catalytic activity of the resulting hybrid nanomaterial has been investigated for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with sodium borohydride (NaBH4). The results showed that the rate constant of GO-AuNRs nanomaterials was 0.205[Formula: see text]min[Formula: see text] and the samples showed significant enhancement in catalytic activity.

Facile in situ synthesis of silver nanoparticles on boron nitride nanosheets with enhanced catalytic performance

2015 ◽  
Vol 3 (32) ◽  
pp. 16663-16669 ◽  
Author(s):  
Heng Shen ◽  
Chunting Duan ◽  
Jing Guo ◽  
Ning Zhao ◽  
Jian Xu
Keyword(s):  
Silver Nanoparticles ◽  
Catalytic Activity ◽  
Boron Nitride ◽  
Ag Nanoparticles ◽  
Catalytic Performance ◽  
In Situ Synthesis ◽  
Boron Nitride Nanosheets ◽  
Fe Complex

Ag nanoparticles are in situ decorated on a BNNS modified with a TA–Fe complex, and the nanohybrids show excellent catalytic activity.

scholarly journals A novel composite of W18O49 nanorods on reduced graphene oxide sheets based on in situ synthesis and catalytic performance for oxygen reduction reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 2051-2057 ◽  
Author(s):  
Jiahao Guo ◽  
Yantao Shi ◽  
Huawei Zhou ◽  
Xuchun Wang ◽  
Tingli Ma
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
In Situ Synthesis ◽  
Composite Catalyst ◽  
One Pot ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets

A novel composite catalyst based on in situ synthesis of W18O49 nanorods on reduced graphene oxide sheets was successfully fabricated through a one-pot solvothermal route.

Facile in situ synthesis of copper nanoparticles supported on reduced graphene oxide for hydrolytic dehydrogenation of ammonia borane

RSC Advances ◽  
2014 ◽  
Vol 4 (27) ◽  
pp. 13749-13752 ◽  
Author(s):  
Yuwen Yang ◽  
Zhang-Hui Lu ◽  
Yujuan Hu ◽  
Zhujun Zhang ◽  
Weimei Shi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Copper Nanoparticles ◽  
Ammonia Borane ◽  
In Situ Synthesis ◽  
Reduced Graphene

A facile in situ procedure has been successfully applied for synthesis of a RGO/Cu nanocomposite, which leads to the highest catalytic activity of Cu nanocatalysts up to now for the dehydrogenation of ammonia borane.

scholarly journals In-situ synthesis of Fe2O3/rGO using different hydrothermal methods as anode materials for lithium-ion batteries

2020 ◽  
Vol 59 (1) ◽  
pp. 477-487 ◽  
Author(s):  
Zhuang Liu ◽  
Haiyang Fu ◽  
Bo Gao ◽  
Yixuan Wang ◽  
Kui Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oleic Acid ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Anode Materials ◽  
Lithium Ion ◽  
In Situ Synthesis ◽  
Cycle Performance ◽  
Reduced Graphene

AbstractThis paper studies in-situ synthesis of Fe2O3/reduced graphene oxide (rGO) anode materials by different hydrothermal process.Scanning Electron Microscopy (SEM) analysis has found that different processes can control the morphology of graphene and Fe2O3. The morphologies of Fe2O3 prepared by the hydrothermal in-situ and oleic acid-assisted hydrothermal in-situ methods are mainly composed of fine spheres, while PVP assists The thermal in-situ law presents porous ellipsoids. Graphene exhibits typical folds and small lumps. X-ray diffraction analysis (XRD) analysis results show that Fe2O3/reduced graphene oxide (rGO) is generated in different ways. Also, the material has good crystallinity, and the crystal form of the iron oxide has not been changed after adding GO. It has been reduced, and a characteristic peak appears around 25°, indicating that a large amount of reduced graphene exists. The results of the electrochemical performance tests have found that the active materials prepared in different processes have different effects on the cycle performance of lithium ion batteries. By comprehensive comparison for these three processes, the electro-chemical performance of the Fe2O3/rGO prepared by the oleic acid-assisted hydrothermal method is best.

In situ synthesis of V 2 O 3 nanorods anchored on reduced graphene oxide as high‐performance lithium ion battery anode

2018 ◽  
Vol 3 (43) ◽  
pp. 12108-12112 ◽  
Author(s):  
Xiaoqing Liu ◽  
Dan Zhang ◽  
Guangshe Li ◽  
Chenglin Xue ◽  
Junfang Ding ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Battery ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Lithium Ion ◽  
In Situ Synthesis ◽  
Reduced Graphene ◽  
Battery Anode

scholarly journals Ultra-Small Pd(0) Nanoparticles into a Designed Semisynthetic Lipase: An Efficient and Recyclable Heterogeneous Biohybrid Catalyst for the Heck Reaction under Mild Conditions

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2358 ◽  
Author(s):  
David Lopez-Tejedor ◽  
Blanca de las Rivas ◽  
Jose M. Palomo
Keyword(s):  
Catalytic Activity ◽  
Protein Structure ◽  
Heck Reaction ◽  
Catalytic Performance ◽  
Reducing Agent ◽  
Chemically Modified ◽  
Mild Conditions ◽  
In Situ Formation ◽  
Geobacillus Thermocatenulatus

A novel heterogeneous enzyme-palladium (Pd) (0) nanoparticles (PdNPs) bionanohybrid has been synthesized by an efficient, green, and straightforward methodology. A designed Geobacillus thermocatenulatus lipase (GTL) variant genetically and then chemically modified by the introduction of a tailor-made cysteine-containing complementary peptide- was used as the stabilizing and reducing agent for the in situ formation of ultra-small PdNPs nanoparticles embedded on the protein structure. This bionanohybrid was an excellent catalyst in the synthesis of trans-ethyl cinnamate by Heck reaction at 65 °C. It showed the best catalytic performance in dimethylformamide (DMF) containing 10–25% of water as a solvent but was also able to catalyze the reaction in pure DMF or with a higher amount of water as co-solvent. The recyclability and stability were excellent, maintaining more than 90% of catalytic activity after five cycles of use.

In Situ Synthesis of ZnO Nanorods/Graphene Oxide Composite and Its Photocatalytic Property

2019 ◽  
Vol 19 (9) ◽  
pp. 5984-5988 ◽  
Author(s):  
Yuxia Zhang ◽  
Zhaohui Li ◽  
Jitao Li ◽  
Weina Zhang ◽  
Hua Tian ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Zno Nanorods ◽  
Photocatalytic Property ◽  
In Situ Synthesis ◽  
Oxide Composite

Facile synthesis and catalytic performance of Co3O4nanosheets in situ formed on reduced graphene oxide modified Ni foam

2017 ◽  
Vol 46 (40) ◽  
pp. 13845-13853 ◽  
Author(s):  
Congying Song ◽  
Xianzhi Yin ◽  
Biaopeng Li ◽  
Ke Ye ◽  
Kai Zhu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
Catalytic Performance ◽  
Ni Foam ◽  
Facile Synthesis ◽  
Reduced Graphene ◽  
Catalyst Electrode

A three-dimensional (3D) catalyst electrode of Co3O4nanosheetsin situformed on reduced graphene oxide modified Ni foam (Co3O4/rGO@Ni foam) for H2O2electroreduction is prepared by a two-step hydrothermal method.

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