scholarly journals Tuning the Electronic Properties of Single-Atom Pt Catalysts by Functionalization of the Carbon Support Material

2017 ◽  
Vol 121 (38) ◽  
pp. 20802-20812 ◽  
Author(s):  
Mehdi Mahmoodinia ◽  
Per-Olof Åstrand ◽  
De Chen
Keyword(s):  
Electronic Properties ◽  
Carbon Support ◽  
Single Atom ◽  
Pt Catalysts ◽  
Support Material

scholarly journals Highly durable carbon-supported Pt catalysts prepared by hydrosilane-assisted nanoparticle deposition and surface functionalization

2015 ◽  
Vol 51 (27) ◽  
pp. 5883-5886 ◽  
Author(s):  
Akinori Saito ◽  
Hiromi Tsuji ◽  
Iwao Shimoyama ◽  
Ken-ichi Shimizu ◽  
Yuta Nishina
Keyword(s):  
Surface Functionalization ◽  
Pt Nanoparticles ◽  
Carbon Support ◽  
Pt Catalysts ◽  
Support Material ◽  
One Pot ◽  
Nanoparticle Deposition ◽  
Supported Pt Catalysts

Hydrosilane enabled the formation of Pt nanoparticles and the silane functionalization of a carbon support material in one pot.

Ag 10 Ti 28 ‐Oxo Cluster Containing Single‐Atom Silver Sites: Atomic Structure and Synergistic Electronic Properties

2019 ◽  
Vol 58 (32) ◽  
pp. 10932-10935 ◽  
Author(s):  
Shuai Chen ◽  
Zhe‐Ning Chen ◽  
Wei‐Hui Fang ◽  
Wei Zhuang ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Atomic Structure ◽  
Single Atom

scholarly journals Insight into Single-Atom-Induced Unconventional Size Dependence over CeO2-Supported Pt Catalysts

Chem ◽  
2020 ◽  
Vol 6 (3) ◽  
pp. 752-765 ◽  
Author(s):  
Chunpeng Wang ◽  
Shanjun Mao ◽  
Zhe Wang ◽  
Yuzhuo Chen ◽  
Wentao Yuan ◽  
...  
Keyword(s):  
Size Dependence ◽  
Single Atom ◽  
Pt Catalysts ◽  
Supported Pt Catalysts ◽  
Insight Into

scholarly journals Dynamic oxygen adsorption on single-atomic Ruthenium catalyst with high performance for acidic oxygen evolution reaction

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Linlin Cao ◽  
Qiquan Luo ◽  
Jiajia Chen ◽  
Lan Wang ◽  
Yue Lin ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Theoretical Calculations ◽  
Cost Effective ◽  
Carbon Support ◽  
Oxygen Adsorption ◽  
Single Atom ◽  
Intrinsic Activity ◽  
Acid Media

Abstract Achieving active and stable oxygen evolution reaction (OER) in acid media based on single-atom catalysts is highly promising for cost-effective and sustainable energy supply in proton electrolyte membrane electrolyzers. Here, we report an atomically dispersed Ru1-N4 site anchored on nitrogen-carbon support (Ru-N-C) as an efficient and durable electrocatalyst for acidic OER. The single-atom Ru-N-C catalyst delivers an exceptionally intrinsic activity, reaching a mass activity as high as 3571 A gmetal−1 and turnover frequency of 3348 O2 h−1 with a low overpotential of 267 mV at a current density of 10 mA cm−2. The catalyst shows no evident deactivation or decomposition after 30-hour operation in acidic environment. Operando synchrotron radiation X-ray absorption spectroscopy and infrared spectroscopy identify the dynamic adsorption of single oxygen atom on Ru site under working potentials, and theoretical calculations demonstrate that the O-Ru1-N4 site is responsible for the high OER activity and stability.

A rational study on the geometric and electronic properties of single-atom catalysts for enhanced catalytic performance

Nanoscale ◽  
2020 ◽  
Vol 12 (45) ◽  
pp. 23206-23212
Author(s):  
Qi Xue ◽  
Yi Xie ◽  
Simson Wu ◽  
Tai-Sing Wu ◽  
Yun-Liang Soo ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Single Atom ◽  
Geometric And Electronic Properties

We investigate the geometric and electronic properties of single-atom catalysts (SACs) for electrocatalytic CO2 reduction reaction (eCO2RR).

Tunable and selective hydrogenation of furfural to furfuryl alcohol and cyclopentanone over Pt supported on biomass-derived porous heteroatom doped carbon

2017 ◽  
Vol 202 ◽  
pp. 79-98 ◽  
Author(s):  
Xiuyun Liu ◽  
Bo Zhang ◽  
Benhua Fei ◽  
Xiufang Chen ◽  
Junyi Zhang ◽  
...  
Keyword(s):  
Furfuryl Alcohol ◽  
Value Added ◽  
Pt Nanoparticles ◽  
Carbon Support ◽  
Carbonization Temperature ◽  
High Dispersion ◽  
Pt Catalysts ◽  
Product Selectivity ◽  
Reaction Products ◽  
Hierarchical Porous

The search for and exploitation of efficient catalytic systems for selective conversion of furfural into various high value-added chemicals remains a huge challenge for green synthesis in the chemical industry. Here, novel Pt nanoparticles supported on bamboo shoot-derived porous heteroatom doped carbon materials were designed as highly active catalysts for controlled hydrogenation of furfural in aqueous media. The porous heteroatom doped carbon supported Pt catalysts were endowed with a large surface area with a hierarchical porous structure, a high content of nitrogen and oxygen functionalities, a high dispersion of the Pt nanoparticles, good water dispersibility and reaction stability. Benefiting from these features, the novel Pt catalysts displayed a high activity and controlled tunable selectivity for furfural hydrogenation to produce furfuryl alcohol and cyclopentanone in water. The product selectivity could be easily modulated by controlling the carbonization temperature of the porous heteroatom doped carbon support and the reaction conditions (temperature and H2 pressure). Under mild conditions (100 °C, 1 MPa H2), furfuryl alcohol was obtained in water with complete conversion of the furfural and an impressive furfuryl alcohol selectivity of >99% in the presence of Pt/NC-BS-500. A higher reaction temperature, in water, favored rearrangement of the furfural (FFA) with Pt/NC-BS-800 as the catalyst, which resulted in a high cyclopentanone yield of >76% at 150 °C and 3 MPa H2. The surface properties and pore structure of the heteroatom doped carbon support, adjusted using the carbonization temperature, might determine the interactions between the Pt nanoparticles, carbon support and catalytic reactants in water, which in turn could have led to a good selectivity control. The effect of different reaction temperatures and reaction times on the product selectivity was also explored. Combined with exploration of the distribution of the reaction products, a reaction mechanism for furfural reduction has been proposed.

Nature of stable single atom Pt catalysts dispersed on anatase TiO2

2018 ◽  
Vol 367 ◽  
pp. 104-114 ◽  
Author(s):  
Ho Viet Thang ◽  
Gianfranco Pacchioni ◽  
Leo DeRita ◽  
Phillip Christopher
Keyword(s):  
Anatase Tio2 ◽  
Single Atom ◽  
Pt Catalysts

First-principles study on the CO adsorption and electronic properties of Fe (111) modified by Cu single atom

2020 ◽  
Vol 48 (4) ◽  
pp. 440-447
Author(s):  
Yu MENG ◽  
Xiao-yan LIU ◽  
Miao-miao BAI ◽  
Ying WANG ◽  
Ya-jun MA ◽  
...  
Keyword(s):  
Electronic Properties ◽  
First Principles ◽  
Co Adsorption ◽  
Single Atom ◽  
First Principles Study

Platinum single-atom catalysts: a comparative review towards effective characterization

2019 ◽  
Vol 9 (18) ◽  
pp. 4821-4834 ◽  
Author(s):  
Qing Liu ◽  
Zailei Zhang
Keyword(s):  
Exafs Spectroscopy ◽  
Single Atom ◽  
Pt Catalysts ◽  
Coordination Environment ◽  
Characterization Techniques ◽  
Comparative Review

This review summaries the characterization techniques for Pt single-atom catalysts and focuses on FT-EXAFS spectroscopy to study the coordination environment of Pt–M for atomically dispersed Pt catalysts on diverse supports.

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