The effect of A-site doping in a strontium palladium perovskite and its applications for non-enzymatic glucose sensing

RSC Advances ◽  
2016 ◽  
Vol 6 (20) ◽  
pp. 16183-16196 ◽  
Author(s):  
Ekram H. El-Ads ◽  
Ahmed Galal ◽  
Nada F. Atta
Keyword(s):  
Catalytic Activity ◽  
Glucose Sensing ◽  
Partial Substitution ◽  
A Site

The catalytic activity of a strontium palladium perovskite, Sr2PdO3, toward non-enzymatic glucose sensing is strongly affected by the Sr2+ A-site partial substitution by Ca2+ ions; Sr2−xCaxPdO3 with x = 0–0.7.

Insights into the role of strontium in toluene catalytic combustion over La1-xSrxCoO3 perovskites catalysts

2022 ◽  
Author(s):  
Mo Liu ◽  
Xiaoli Yang ◽  
ZiMeng Tian ◽  
Huimin Wang ◽  
Liangtao Yin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Combustion ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
A Site

A series of LaCoO3 pervoskite catalysts substituted by Sr in A site (La1-xSrxCoO3) were prepared via a facile sol-gel method. The catalytic activity of these pervoskite catalysts for the deep...

Enhanced Catalytic Activity of LaMnO3 by A-Site Substitution as Air Electrode of Zn–Air Batteries with Attractive Durability

2020 ◽  
Vol 34 (8) ◽  
pp. 10170-10177
Author(s):  
Yidan Zhang ◽  
Fuxu Feng ◽  
Chuanhui Zhang ◽  
Qilong Zheng ◽  
Chunchang Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Air Electrode ◽  
A Site

Effect of A-site disubstituted of lanthanide perovskite on catalytic activity and reaction kinetics analysis of coal combustion

Fuel ◽  
2020 ◽  
Vol 260 ◽  
pp. 116380 ◽  
Author(s):  
Xin Cui ◽  
Jun Wang ◽  
Jing-Pei Cao ◽  
Pei-Tao Zhao ◽  
Yu-Xin Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reaction Kinetics ◽  
Coal Combustion ◽  
Kinetics Analysis ◽  
A Site

Enhanced catalytic activity of nanostructured, A-site deficient (La0.7Sr0.3)0.95(Co0.2Fe0.8)O3−δ for SOFC cathodes

2019 ◽  
Vol 7 (43) ◽  
pp. 25102-25111 ◽  
Author(s):  
Ozden Celikbilek ◽  
Cam-Anh Thieu ◽  
Fabio Agnese ◽  
Eleonora Calì ◽  
Christian Lenser ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Significant Enhancement ◽  
A Site

Significant enhancement in the catalytic activity of the benchmark (LaSr)(CoFe)O3−δ (LSCF) electrode is obtained by modifying the A-site non-stoichiometry.

Preparation and Characterization of Cu1-xKxFe2O4 Fibers and the Catalytic Activity for Diesel Engine Exhaust Removal

2010 ◽  
Vol 96 ◽  
pp. 135-139
Author(s):  
Cai Rong Gong ◽  
Hai Feng Chen ◽  
Guo Liang Fan ◽  
Chong Lin Song ◽  
Gang Lv
Keyword(s):  
Catalytic Activity ◽  
Sol Gel ◽  
Complex Oxide ◽  
Average Diameter ◽  
Partial Substitution ◽  
High Catalytic Activity ◽  
Engine Exhaust ◽  
Sol Gel Process ◽  
Temperature Programmed ◽  
Temperature Programmed Reaction

A series of complex oxide Cu1-xKxFe2O4 fibers have been prepared via a sol-gel process related electron-spinning procedure, in which x is among 0, 0.05, 0.1 and 0.2 corresponding to the quantity of Cu2+ partial substitution by K+. The average diameter of the fiber was 500 nm. The catalytic activity of the catalysts in removal of NOx and carbon black from diesel exhaust gases were examined in detail using temperature-programmed reaction technique. The results show that after partial substitution of Cu2+ with K+, the catalytic activities have been improved. Cu0.95K0.05Fe2O4 as an optimal catalyst can significantly decrease the ignition temperature (Tig) of the PM, and has high catalytic activity on the removal of NOx.

The controllable synthesis of substitutional and interstitial nitrogen-doped manganese dioxide: the effects of doping sites on enhancing the catalytic activity

2020 ◽  
Vol 8 (17) ◽  
pp. 8383-8396 ◽  
Author(s):  
Taohong He ◽  
Xiaoshan Zeng ◽  
Shaopeng Rong
Keyword(s):  
Catalytic Activity ◽  
Manganese Dioxide ◽  
Deep Insight ◽  
Controllable Synthesis ◽  
Nitrogen Doped ◽  
N Doping ◽  
Interstitial Nitrogen ◽  
A Site ◽  
Site Selective ◽  
Insight Into

N atoms were selectively doped at substitutional or interstitial sites in the MnO2 lattice using N2 plasma. This research provides a site-selective N-doping method and a deep insight into the different effects of doping sites.

scholarly journals Multiple Roles for TnpI Recombinase in Regulation of Tn5401 Transposition in Bacillus thuringiensis

1999 ◽  
Vol 181 (20) ◽  
pp. 6271-6277 ◽  
Author(s):  
James A. Baum ◽  
Amy Jelen Gilmer ◽  
Anne-Marie Light Mettus
Keyword(s):  
Catalytic Activity ◽  
Bacillus Thuringiensis ◽  
Binding Sites ◽  
Negative Regulation ◽  
Multiple Roles ◽  
Inverted Repeats ◽  
Positive Bacterium ◽  
Site Specific ◽  
Terminal Inverted Repeats ◽  
A Site

ABSTRACT Tn5401 is a class II transposable element derived from the gram-positive bacterium Bacillus thuringiensis. The 4,837-bp transposon encodes a Tn3-like transposase (TnpA) and an integrase-like recombinase (TnpI) and is notable for its unusually long 53-bp terminal inverted repeats (TIRs). ThetnpA and tnpI genes are transcribed from a common promoter, designated PR, that is subject to negative regulation by TnpI. The TIRs of Tn5401 each contain a 38-bp sequence that can be aligned with the 38- to 40-bp TIR sequences of Tn3-like transposons and an adjacent 12-bp sequence that binds TnpI. This unique juxtaposition of TnpA and TnpI binding sites suggests that TnpI may regulate the binding or catalytic activity of TnpA. The results of the present study indicate that TnpI, in addition to functioning as a site-specific recombinase and as a transcriptional repressor, is required for TnpA binding to the TIRs of Tn5401.

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