Enhancing electrocatalytic nitrogen reduction to ammonia with rare earth (La, Y, Sc) on high-index faceted platinum alloy concave nanocubes

2021 ◽  
Author(s):  
Yu-Jie Mao ◽  
Feng Liu ◽  
You-Hu Chen ◽  
Xin Jiang ◽  
Xinsheng Zhao ◽  
...  
Keyword(s):  
Rare Earth ◽  
Surface Structure ◽  
Catalyst Surface ◽  
High Index ◽  
Structure Effect ◽  
Structure Dependence ◽  
Nitrogen Reduction ◽  
Platinum Alloy ◽  
Atomic Arrangement ◽  
Rare Earth La

Surface structure effect is the key subject in electrocatalysis, and consists of the structure dependence of interaction between reaction molecules and catalyst surface in specifying the surface atomic arrangement, chemical...

Optimal rare-earth (La, Y and Sm) doping conditions and enhanced mechanism for photocatalytic application of ceria nanorods

2021 ◽  
Vol 32 (19) ◽  
pp. 195708
Author(s):  
Xuewen Xia ◽  
Junqi Li ◽  
Chaoyi Chen ◽  
Yuan-Pei Lan ◽  
Xisong Mao ◽  
...  
Keyword(s):  
Rare Earth ◽  
Photocatalytic Application ◽  
Rare Earth La

THE STUDY OF HIGH DIELECTRIC CONSTANT MECHANISM OF La-DOPED Ba0.67Sr0.33TiO3 CERAMICS

2018 ◽  
Vol 25 (02) ◽  
pp. 1850056
Author(s):  
JING XU ◽  
BO HE ◽  
HAN XING LIU
Keyword(s):  
Dielectric Constant ◽  
Rare Earth ◽  
High Dielectric Constant ◽  
Temperature Stability ◽  
Current Voltage ◽  
Microstructure Model ◽  
Bst Ceramics ◽  
High Dielectric ◽  
Rare Earth La ◽  
La Doped

It is a common and effective method to enhance the dielectric properties of BST ceramics by adding rare-earth elements. In this paper, it is important to analyze the cause of the high dielectric constant behavior of La-doped BST ceramics. The results show that proper rare earth La dopant ([Formula: see text]) may greatly increase the dielectric constant of BST ceramics, and also improve the temperature stability, evidently. According to the current–voltage ([Formula: see text]–[Formula: see text]) characteristics, the proper La-doped BST ceramics may reach the better semiconductivity, with the decrease and increase in La doping, the ceramics are insulators. By using the Schottky barrier model and electric microstructure model to find the surface or grain boundary potential barrier height, the width of the depletion layer and grain size do play an important role in impacting the dielectric constant.

High index, reactive facet-controlled synthesis of one-dimensional single crystalline rare earth hydroxide nanobelts

CrystEngComm ◽  
2011 ◽  
Vol 13 (17) ◽  
pp. 5367 ◽  
Author(s):  
Liap Tat Su ◽  
Jun Ye ◽  
Siva Krishna Karuturi ◽  
Lijun Liu ◽  
Yang Zhao ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Index ◽  
Controlled Synthesis ◽  
Single Crystalline ◽  
One Dimensional

Electrical and Raman Spectroscopic Studies on Aurivillius Layered-Pervoskite Ceramics

2019 ◽  
Vol 1154 ◽  
pp. 80-90
Author(s):  
Mohammed Abdul Basheer ◽  
Vagmare Gangadhar ◽  
Guduru Prasad ◽  
Gobburu Subramanya Kumar ◽  
Nandi Venkata Prasad
Keyword(s):  
Rare Earth ◽  
Complex Impedance ◽  
Spectroscopic Properties ◽  
Spectroscopic Studies ◽  
Rare Earth Ions ◽  
X Ray Diffraction ◽  
Raman Spectroscopic ◽  
Solid State Route ◽  
A Site ◽  
Rare Earth La

Double rare-earth (La; Sm/Gd) substituted Aurivillius family of Bismuth Layered Structured Ferroelectrics (BLSF) namely Bi2.6Sm0.2La0.2TiNbO9 (BSLT; sample-A), Bi2.6Gd0.2La0.2TiNbO9 (BGLT; sample-B), single phase ceramics were prepared by solid state route. In addition, intergrowth (x BSLT - (1-x) BGLT, where x=0.49; sample-C) and solid solution (BSLT­x - BGLTy; where x + y=0.4; sample-D) materials were prepared. Dielectric, ferroelectric and Raman spectroscopic properties were studied on the said above materials. The X-ray diffraction analysis and Raman spectra revealed well-formation of stable structure. Though, the sample-C and sample-D have lower coercive field, compared to the sample-A and sample-B, but they exhibited sharp hysterisis loop. Therefore the instrinsic defects of sample-D inhabits more sensitivity towards the ferroelectric behaviour. The results were corroborated to the impedance and dielectrical data. The results were consistent with the SEM micrographs and complex impedance plots. An attempt is made to understand the effect of rare-earth ions on A-site of layered-pervoskite structure, defined as: (Bi2O2)2+(An-1BnO3n+1)2-.The term n represents number of pervoskite blocks interleaved with the bismuth oxide layers.

scholarly journals Correction: Electrochemically shape-controlled synthesis of great stellated dodecahedral Au nanocrystals with high-index facets for nitrogen reduction to ammonia

2020 ◽  
Vol 56 (81) ◽  
pp. 12254-12254
Author(s):  
Yu-Chen Jiang ◽  
Yu-Jie Mao ◽  
Jin Zou ◽  
Hong-Hui Wang ◽  
Feng Liu ◽  
...  
Keyword(s):  
High Index ◽  
Controlled Synthesis ◽  
Nitrogen Reduction ◽  
Shape Controlled

Correction for ‘Electrochemically shape-controlled synthesis of great stellated dodecahedral Au nanocrystals with high-index facets for nitrogen reduction to ammonia’ by Yu-Chen Jiang et al., Chem. Commun., 2020, DOI: 10.1039/d0cc04326e.

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