scholarly journals Computational design to improve catalytic activity of cephalosporin C acylase from Pseudomonas strain N176

RSC Advances ◽  
2017 ◽  
Vol 7 (48) ◽  
pp. 30370-30375 ◽  
Author(s):  
Ye Tian ◽  
Zhaobin Xu ◽  
Xiaoqiang Huang ◽  
Yushan Zhu
Keyword(s):  
Catalytic Activity ◽  
In Silico ◽  
Computational Design ◽  
Cephalosporin C ◽  
Enzyme Design ◽  
Catalytic Activities ◽  
Highly Efficient ◽  
Cephalosporin C Acylase

Engineering enzymes with high catalytic activities using enzyme designin silicoand a limited number of experimental evaluations is the new trend for the discovery of highly efficient biocatalysts.

A highly efficient electrocatalyst based on double perovskite cobaltites with immense intrinsic catalytic activity for water oxidation

2020 ◽  
Vol 56 (7) ◽  
pp. 1030-1033 ◽  
Author(s):  
Håkon Andersen ◽  
Kaiqi Xu ◽  
Dmitry Malyshkin ◽  
Ragnar Strandbakke ◽  
Athanasios Chatzitakis
Keyword(s):  
Catalytic Activity ◽  
Water Oxidation ◽  
Double Perovskite ◽  
Catalytic Activities ◽  
Highly Efficient

OER electrocatalysts based on double perovskite cobaltites (Ln = Gd or Pr) with intrinsic catalytic activities exceeding that of IrO2.

Highly monodisperse Pt(0)@AC NPs as highly efficient and reusable catalysts: the effect of the surfactant on their catalytic activities in room temperature dehydrocoupling of DMAB

2016 ◽  
Vol 6 (6) ◽  
pp. 1685-1692 ◽  
Author(s):  
Betül Çelik ◽  
Esma Erken ◽  
Sinan Eriş ◽  
Yunus Yıldız ◽  
Birgütay Şahin ◽  
...  
Keyword(s):  
Particle Size ◽  
Catalytic Activity ◽  
Room Temperature ◽  
Catalytic Activities ◽  
Highly Efficient

The effect of the particle size and the stabilizing ligand on the catalytic activity has been investigated for the dehydrocoupling of DMAB [(CH3)2NHBH3].

Computational Design and Crystal Structure of a Highly Efficient Benzoylecgonine Hydrolase

2021 ◽  
Author(s):  
Xiabin Chen ◽  
Xingyu Deng ◽  
Yun Zhang ◽  
Yanan Wu ◽  
Kang Yang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Computational Design ◽  
Highly Efficient

scholarly journals Development of palladium catalysts modified by ruthenium and molybdenum as anode in direct ethanol fuel cell

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Yonis Fornazier Filho ◽  
Ana Caroliny Carvalho da Cruz ◽  
Rolando Pedicini ◽  
José Ricardo Cezar Salgado ◽  
Priscilla Paiva Luz ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Palladium Catalysts ◽  
Carbon Support ◽  
X Ray Diffraction ◽  
Direct Ethanol Fuel Cell ◽  
Pd Catalysts ◽  
Bifunctional Mechanism ◽  
Catalytic Activities ◽  
Intrinsic Mechanism ◽  
Ternary Catalysts

AbstractPhysical and electrochemical properties of Pd catalysts combined with Ru and Mo on carbon support were investigated. To this end, Pd, Pd1.3Ru1.0, Pd3.2Ru1.3Mo1.0 and Pd1.5Ru0.8Mo1.0 were synthesized on Carbon Vulcan XC72 support by the method of thermal decomposition of polymeric precursors and then physically and electrochemically characterized. The highest reaction yields are obtained for Pd3.2Ru1.3Mo1.0/C and Pd1.5Ru0.8Mo1.0/C and, as demonstrated by thermal analysis, they also show the smallest metal/carbon ratio compared the other catalysts. XRD (X-ray Diffraction) and Raman analyses show the presence of PdO and RuO2 for the Pd/C and the Pd1.3Ru1.0/C catalysts, respectively, a fact not observed for the Pd3.2Ru1.3 Mo1.0 /C and the Pd1.5Ru0.8Mo1.0/C catalysts. The catalytic activities were tested for the ethanol oxidation in alkaline medium. Cyclic voltammetry (CV) shows Pd1.3Ru1.0/C exhibiting the highest peak of current density, followed by Pd3.2Ru1.3Mo1.0/C, Pd1.5Ru0.8Mo1.0/C and Pd/C. From, chronoamperometry (CA), it is possible to observe the lowest rate of poisoning for the Pd1.3Ru1.0/C, followed by Pd3.2Ru1.3Mo1.0/C, Pd1.5Ru0.8Mo1.0/C and Pd/C. These results suggested that catalytic activity of the binary and the ternary catalysts are improved in comparison with Pd/C. The presence of RuO2 activated the bifunctional mechanism and improved the catalytic activity in the Pd1.3Ru1.0/C catalyst. The addition of Mo in the catalysts enhanced the catalytic activity by the intrinsic mechanism, suggesting a synergistic effect between metals. In summary, we suggest that it is possible to synthesize ternary PdRuMo catalysts supported on Carbon Vulcan XC72, resulting in materials with lower poisoning rates and lower costs than Pd/C. Graphic abstract

Rutile TiO2 single crystals delivering enhanced photocatalytic oxygen evolution performance

Nanoscale ◽  
2021 ◽  
Author(s):  
Bing Fu ◽  
Zhijiao Wu ◽  
Kai Guo ◽  
Lingyu Piao
Keyword(s):  
Catalytic Activity ◽  
Single Crystals ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Charge Separation ◽  
High Surface ◽  
Rutile Tio2 ◽  
Highly Efficient ◽  
Photogenerated Charge Separation

Owing to their scientific and technological importance, the development of highly efficient photocatalytic water oxidation systems with rapid photogenerated charge separation and high surface catalytic activity has highly desirable for...

Industrial resin “INDION 130” modified with vanadyl cations as highly efficient heterogeneous catalyst for epoxidation of fatty compounds with TBHP as oxidant

2015 ◽  
Vol 39 (8) ◽  
pp. 5960-5965 ◽  
Author(s):  
Praveen K. Khatri ◽  
Mounika Aila ◽  
Jyoti Porwal ◽  
Savita Kaul ◽  
Suman L. Jain
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Cation Exchanger ◽  
Vanadium Catalyst ◽  
Highly Efficient ◽  
Efficient Heterogeneous Catalyst

Cation exchanger INDION 130 modified with vanadyl cations was found to be readily prepared and reusable and exhibited higher catalytic activity than the homogeneous oxo-vanadium catalyst for epoxidation of fatty compounds.

Active Pd(ii) complexes: enhancing catalytic activity by ligand effect for carbonylation of methyl nitrite to dimethyl carbonate

2017 ◽  
Vol 7 (17) ◽  
pp. 3785-3790 ◽  
Author(s):  
Hong-Zi Tan ◽  
Zhi-Qiao Wang ◽  
Zhong-Ning Xu ◽  
Jing Sun ◽  
Zhe-Ning Chen ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Dimethyl Carbonate ◽  
Ligand Effect ◽  
Methyl Nitrite ◽  
Catalytic Activities

The catalytic activities of Pd(ii) complexes for carbonylation of methyl nitrite to dimethyl carbonate could be enhanced by ligand effect.

scholarly journals Target-triggered cascade assembly of a catalytic network as an artificial enzyme for highly efficient sensing

2017 ◽  
Vol 8 (7) ◽  
pp. 4833-4839 ◽  
Author(s):  
Lei Zhang ◽  
Fengjiao Ma ◽  
Jianping Lei ◽  
Jintong Liu ◽  
Huangxian Ju
Keyword(s):  
Catalytic Activity ◽  
Horseradish Peroxidase ◽  
Signal Amplification ◽  
High Catalytic Activity ◽  
Artificial Enzyme ◽  
Highly Efficient ◽  
Catalytic Network

A hemin-based enzymatic network is constructed with high catalytic activity that is comparable to natural horseradish peroxidaseviatriple signal amplification.

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