Alloy tetrahexahedral Pd–Pt catalysts: enhancing significantly the catalytic activity by synergy effect of high-index facets and electronic structure

2012 ◽  
Vol 3 (4) ◽  
pp. 1157 ◽  
Author(s):  
Yu-Jia Deng ◽  
Na Tian ◽  
Zhi-You Zhou ◽  
Rui Huang ◽  
Zi-Li Liu ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Catalytic Activity ◽  
High Index ◽  
Pt Catalysts ◽  
Synergy Effect

Enhanced Hydrogen Evolution Efficiency Achieved by Atomically Controlled Platinum Deposited on Gold Nanodendrites with High-Index Surfaces

2021 ◽  
Author(s):  
Ying-Huang Lai ◽  
Shin-Ren Li ◽  
Swathi MG ◽  
Hsiao-Tzu Chang ◽  
Yu-Bin Huang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Index ◽  
Single Atom ◽  
Pt Catalysts

There have been lots of studies on hydrogen evolution reaction (HER) catalytic activity using ultralow loading of Pt catalysts or even Pt single atom catalysts as well. However, Pt single...

scholarly journals Influence of the Reduction Temperature and the Nature of the Support on the Performance of Zirconia and Alumina-Supported Pt Catalysts for n-Dodecane Hydroisomerization

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 88
Author(s):  
Diana García-Pérez ◽  
Maria Consuelo Alvarez-Galvan ◽  
Jose M. Campos-Martin ◽  
Jose L. G. Fierro
Keyword(s):  
Catalytic Activity ◽  
Surface Area ◽  
Catalytic Properties ◽  
Catalytic Performance ◽  
Major Influence ◽  
Pt Catalysts ◽  
Reduction Temperature ◽  
Metal Dispersion ◽  
Tungsten Oxides ◽  
Supported Pt Catalysts

Catalysts based on zirconia- and alumina-supported tungsten oxides (15 wt % W) with a small loading of platinum (0.3 wt % Pt) were selected to study the influence of the reduction temperature and the nature of the support on the hydroisomerization of n-dodecane. The reduction temperature has a major influence on metal dispersion, which impacts the catalytic activity. In addition, alumina and zirconia supports show different catalytic properties (mainly acid site strength and surface area), which play an important role in the conversion. The NH3-TPD profiles indicate that the acidity in alumina-based catalysts is clearly higher than that in their zirconia counterparts; this acidity can be attributed to a stronger interaction of the WOx species with alumina. The PtW/Al catalyst was found to exhibit the best catalytic performance for the hydroisomerization of n-dodecane based on its higher acidity, which was ascribed to its larger surface area relative to that of its zirconia counterparts. The selectivity for different hydrocarbons (C7–10, C11 and i-C12) was very similar for all the catalysts studied, with branched C12 hydrocarbons being the main products obtained (~80%). The temperature of 350 °C was clearly the best reduction temperature for all the catalysts studied in a trickled-bed-mode reactor.

Electronic structure modulation of NiS2 by transition metal doping for accelerating the hydrogen evolution reaction

2019 ◽  
Vol 7 (9) ◽  
pp. 4971-4976 ◽  
Author(s):  
Tongtong Wang ◽  
Xiaosong Guo ◽  
Jingyan Zhang ◽  
Wen Xiao ◽  
Pinxian Xi ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution Reaction ◽  
Systematic Study ◽  
First Principles ◽  
Transition Metal Doping ◽  
First Principles Calculations ◽  
Structure Modulation ◽  
Metal Doped

We give a systematic study of the HER catalytic activity of transition metal doped NiS2 by first principles calculations and experiments.

Theoretical Insights into the Electronic Structure and Catalytic Activity on MoS2-Based Catalyst

2019 ◽  
pp. 41-59
Author(s):  
Xiaodong Wen ◽  
Tao Yang ◽  
Manuel Ramos ◽  
Gabriel A. Gonzalez ◽  
Russell R. Chianelli
Keyword(s):  
Electronic Structure ◽  
Catalytic Activity

Synthesis of concave gold nanocuboids with high-index facets and their enhanced catalytic activity

2015 ◽  
Vol 51 (58) ◽  
pp. 11591-11594 ◽  
Author(s):  
Lidong Li ◽  
Yi Peng ◽  
Yonghai Yue ◽  
Ye Hu ◽  
Xiu Liang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Index ◽  
Catalytic Activities ◽  
Growth Method ◽  
Seed Mediated

Novel concave gold nanocuboids bounded by 24 high-index {611} facets are synthesized using the seed-mediated growth method via an overgrowth mechanism, which exhibit excellent catalytic activities over certain reactions.

Facet- and structure-dependent catalytic activity of cuprous oxide/polypyrrole particles towards the efficient reduction of carbon dioxide to methanol

Nanoscale ◽  
2018 ◽  
Vol 10 (25) ◽  
pp. 11869-11880 ◽  
Author(s):  
Arun Prakash Periasamy ◽  
Rini Ravindranath ◽  
Sakkarapalayam Murugesan Senthil Kumar ◽  
Wen-Ping Wu ◽  
Ting-Rui Jian ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Anion Exchange ◽  
Cuprous Oxide ◽  
High Index ◽  
Exchange Mechanism ◽  
Faradaic Efficiency ◽  
Efficient Reduction

Cu2O(OL-MH)/Ppy particles selectively reduce CO2to methanol with a faradaic efficiency of 93 ± 1.2% due to an efficient anion exchange mechanism, dominant low-index (111) facets and high-index (311), (211) facets of Cu2O.

Anisotropic Surface Modulation of Pt Catalysts for Highly Reversible Li–O2 Batteries: High Index Facet as a Critical Descriptor

ACS Catalysis ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 9006-9015 ◽  
Author(s):  
Kyeongse Song ◽  
Jaepyeong Jung ◽  
Mihui Park ◽  
Hyeokjun Park ◽  
Hyung-Jin Kim ◽  
...  
Keyword(s):  
High Index ◽  
Pt Catalysts ◽  
Anisotropic Surface ◽  
Surface Modulation
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