In Situ Formation of Pt-Au Nanoparticles on Magnetic Composites Carriers: Tuning Catalytic Activity by Incorporation of Different Metal Oxides

2017 ◽  
Vol 39 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Zewu Zhang ◽  
Qiong Wu ◽  
Xiaohai Bu ◽  
Zusheng Hang ◽  
Zhangzhong Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxides ◽  
Au Nanoparticles ◽  
Magnetic Composites ◽  
In Situ Formation

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.

A facile construction of Au nanoparticles on a copolymer ligand brushes modified graphene oxide nanoplatform with excellent catalytic properties

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64937-64945 ◽  
Author(s):  
Yajiao Song ◽  
Jianhua Lü ◽  
Bingxin Liu ◽  
Changli Lü
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Au Nanoparticles ◽  
Catalytic Properties ◽  
High Catalytic Activity ◽  
Au Nps ◽  
Modified Graphene Oxide ◽  
Modified Graphene ◽  
Copolymer Brush

Au NPs were generated via in situ reduction on copolymer brush P(OEGMA-co-MQ) functionalized GO. MQ units in the brushes as capping agents could stabilize the Au NPs. The Au NPs–GO hybrid exhibited high catalytic activity for the reduction of 4-NP.

In situ assembly of ultrafine Mn3O4 nanoparticles into MIL-101 for selective aerobic oxidation

2017 ◽  
Vol 7 (18) ◽  
pp. 4136-4144 ◽  
Author(s):  
Yu Fu ◽  
Yanglong Guo ◽  
Yun Guo ◽  
Yunsong Wang ◽  
Li Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxides ◽  
Aerobic Oxidation ◽  
High Catalytic Activity ◽  
Selective Aerobic Oxidation ◽  
Mn3o4 Nanoparticles

Nanosize metal oxides generally possess high catalytic activity, but they tend to agglomerate into larger particles during a reaction.

In-situ formation of supported Au nanoparticles in hierarchical yolk-shell CeO 2 /mSiO 2 structures as highly reactive and sinter-resistant catalysts

2017 ◽  
Vol 488 ◽  
pp. 196-206 ◽  
Author(s):  
Jiasheng Fang ◽  
Yiwei Zhang ◽  
Yuming Zhou ◽  
Shuo Zhao ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
In Situ Formation

In-situ formation of Fe3O4 and ZrO2 coated Fe-based soft magnetic composites by hydrothermal method

2019 ◽  
Vol 45 (3) ◽  
pp. 3864-3870 ◽  
Author(s):  
Wangchang Li ◽  
Zhaojia Wang ◽  
Yao Ying ◽  
Jing Yu ◽  
Jingwu Zheng ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Soft Magnetic Composites ◽  
In Situ Formation

scholarly journals Porous SiOC monoliths with catalytic activity by in situ formation of Ni nanoparticles in solution‐based freeze casting

2020 ◽  
Vol 103 (5) ◽  
pp. 2991-3001 ◽  
Author(s):  
Daniel Schumacher ◽  
Michaela Wilhelm ◽  
Kurosch Rezwan
Keyword(s):  
Catalytic Activity ◽  
Ni Nanoparticles ◽  
Freeze Casting ◽  
In Situ Formation

Self-reducing asymmetric polymer membrane for in situ formation and containment of noble metal nanocatalysts

2015 ◽  
Vol 17 (8) ◽  
pp. 4157-4161 ◽  
Author(s):  
Sankararao Chappa ◽  
Rakesh N. Shinde ◽  
Ashok K. Pandey
Keyword(s):  
Catalytic Activity ◽  
Noble Metal ◽  
Redox Reactions ◽  
Polymer Membrane ◽  
Good Catalytic Activity ◽  
In Situ Formation ◽  
Inorganic And Organic

Highly stable metal nanocatalysts formed in self-reducing asymmetric polymer membrane exhibit good catalytic activity in inorganic and organic redox reactions.

Hierarchically porous ternary Au/ZnO@ZIF-8 nanocomposite: spatial in situ Au encapsulation and catalytic activity for the reduction of p-nitrophenol

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 112451-112454 ◽  
Author(s):  
Xiaokai Song ◽  
Hongzhao Sun ◽  
Xin Cao ◽  
Zhixian Wang ◽  
Dejian Zhao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Au Nanoparticles ◽  
High Catalytic Activity ◽  
Nucleation Process ◽  
Hierarchically Porous ◽  
Crystal Matrix

A ternary Au/ZnO@ZIF-8 nanocomposite was prepared through in situ Au nanoparticles encapsulation from the ZnO surface into the ZIF-8 crystal matrix during its nucleation process, which exhibited high catalytic activity for the reduction of p-nitrophenol.

In situ formation of well-dispersed palladium nanoparticles immobilized in imidazolium-based organic ionic polymers

2014 ◽  
Vol 50 (74) ◽  
pp. 10871-10874 ◽  
Author(s):  
Huaixia Zhao ◽  
Yangxin Wang ◽  
Ruihu Wang
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
Ionic Polymers ◽  
New Strategy ◽  
In Situ Formation

A new strategy for the synthesis of well-dispersed palladium nanoparticles (NPs) immobilized in imidazolium-based porous organic ionic polymers was presented in this study. The as-synthesized polymers showed excellent catalytic activity and reusability in the hydrogenation of nitroarenes without extra addition of palladium species.

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