Cooperativity in supported metal single atom catalysis

Nanoscale ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 5985-6004
Author(s):  
Philippe Serp
Keyword(s):  
Single Atom ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Supported Metal

Cooperativity in single atom catalysis greatly exceeds the (important) metal–support interaction, and other types of synergies (with a nanoparticle – NP, a second SA – SA2, or a ligand/heteroatom – X) are described in this mini-review.

scholarly journals Electronic metal–support interaction modulates single-atom platinum catalysis for hydrogen evolution reaction

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yi Shi ◽  
Zhi-Rui Ma ◽  
Yi-Ying Xiao ◽  
Yun-Chao Yin ◽  
Wen-Mao Huang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Structure Activity Relationship ◽  
Atomic Level ◽  
Single Atom ◽  
Activity Relationship ◽  
Support Interaction ◽  
Structure Activity ◽  
Metal Support Interaction ◽  
Metal Support

AbstractTuning metal–support interaction has been considered as an effective approach to modulate the electronic structure and catalytic activity of supported metal catalysts. At the atomic level, the understanding of the structure–activity relationship still remains obscure in heterogeneous catalysis, such as the conversion of water (alkaline) or hydronium ions (acid) to hydrogen (hydrogen evolution reaction, HER). Here, we reveal that the fine control over the oxidation states of single-atom Pt catalysts through electronic metal–support interaction significantly modulates the catalytic activities in either acidic or alkaline HER. Combined with detailed spectroscopic and electrochemical characterizations, the structure–activity relationship is established by correlating the acidic/alkaline HER activity with the average oxidation state of single-atom Pt and the Pt–H/Pt–OH interaction. This study sheds light on the atomic-level mechanistic understanding of acidic and alkaline HER, and further provides guidelines for the rational design of high-performance single-atom catalysts.

scholarly journals Strong metal–support interaction of Ru on TiO2 derived from the co-reduction mechanism of RuxTi1−xO2 interphase

2021 ◽  
Author(s):  
Yaru Zhang ◽  
Haifeng Qi ◽  
Xiong Su ◽  
Yang Su ◽  
Xiao Yan Liu ◽  
...  
Keyword(s):  
Alternative Pathway ◽  
Metal Catalysts ◽  
Supported Metal Catalysts ◽  
Pretreatment Condition ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Co Reduction ◽  
Strong Metal Support Interaction ◽  
Supported Metal

Abstract Strong metal–support interaction (SMSI) plays a crucial role in determining the catalytic performances of supported metal catalysts, in which the subsequent migration of supports over the pre-existing metal nanoparticles is generally considered during the pretreatment condition. Herein, a distinct mechanism of SMSI generation by the co-reduction of oxide interphase is addressed over the Ru/TiO2 catalysts. Our results demonstrate that the formation of RuxTi1−xO2 oxide interphase can be facilely augmented by increasing the calcination temperature over Ru/TiO2 catalysts, while a growing encapsulation of TiOx overlayer on metallic Ru nanoparticles can be acquired in the following reduction of this oxide interphase. In contrast, the SMSI generation by the conventional mechanism is highly suppressed over the RuO2/TiO2 phase calcined at a low temperature. Thanks to this improved SMSI on Ru/TiO2 catalyst, it thus possesses an excellent performance in CO2 methanation, with a promoted CO2 conversion activity. Our findings suggest a different mechanism for the SMSI generation through the oxide interphase formation, and it also offers an alternative pathway to tune catalytic properties of supported metal catalysts.

Ultrastable single-atom gold catalysts with strong covalent metal-support interaction (CMSI)

Nano Research ◽  
2015 ◽  
Vol 8 (9) ◽  
pp. 2913-2924 ◽  
Author(s):  
Botao Qiao ◽  
Jin-Xia Liang ◽  
Aiqin Wang ◽  
Cong-Qiao Xu ◽  
Jun Li ◽  
...  
Keyword(s):  
Gold Catalysts ◽  
Single Atom ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support

Vapor-Phase Self-Assembly to Generate Single Atom Catalysts with Weak Metal-Support Interaction

2021 ◽  
Author(s):  
Henyyu Li ◽  
Qiang Wan ◽  
Congcong Du ◽  
QiuNan Liu ◽  
Jiamin Qi ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Self Assembly ◽  
Single Atom ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support

scholarly journals Single-Atom Catalysts: A Review of Synthesis Strategies and Their Potential for Biofuel Production

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1470
Author(s):  
Nurul Asikin-Mijan ◽  
Haslinda Mohd Sidek ◽  
Abdulkareem G. AlSultan ◽  
Nurul Ahtirah Azman ◽  
Nur Athirah Adzahar ◽  
...  
Keyword(s):  
Future Development ◽  
Catalytic Performance ◽  
Biofuel Production ◽  
Single Atom ◽  
Support Interaction ◽  
Metal Atoms ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Single Atom Alloys

Biofuels have been derived from various feedstocks by using thermochemical or biochemical procedures. In order to synthesise liquid and gas biofuel efficiently, single-atom catalysts (SACs) and single-atom alloys (SAAs) have been used in the reaction to promote it. SACs are made up of single metal atoms that are anchored or confined to a suitable support to keep them stable, while SAAs are materials generated by bi- and multi-metallic complexes, where one of these metals is atomically distributed in such a material. The structure of SACs and SAAs influences their catalytic performance. The challenge to practically using SACs in biofuel production is to design SACs and SAAs that are stable and able to operate efficiently during reaction. Hence, the present study reviews the system and configuration of SACs and SAAs, stabilisation strategies such as mutual metal support interaction and geometric coordination, and the synthesis strategies. This paper aims to provide useful and informative knowledge about the current synthesis strategies of SACs and SAAs for future development in the field of biofuel production.

Immobilizing single atom catalytic sites onto highly reduced carbon hosts: Fe–N4/CNT as a durable oxygen reduction catalyst for Na–air batteries

2020 ◽  
Vol 8 (36) ◽  
pp. 18891-18902
Author(s):  
Woo Yeong Noh ◽  
Eun Mi Kim ◽  
Kwang Young Kim ◽  
Jin Hyun Kim ◽  
Hu Young Jeong ◽  
...  
Keyword(s):  
Metal Ions ◽  
Oxygen Reduction ◽  
Carbon Support ◽  
Single Atom ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Catalytic Sites ◽  
Metal Support ◽  
Oxygen Reduction Catalyst

Immobilizing metal ions on a carbon support usually involves severe aggregation (sintering) and loose attachment of metal ions owing to a weak metal–support interaction.

High Efficient Detritiation Catalysts for Fusion Safety

2018 ◽  
Author(s):  
Quanwen Wu ◽  
Wenhua Luo ◽  
Daqiao Meng ◽  
Jinchun Bao ◽  
Jingwen Ba
Keyword(s):  
Ostwald Ripening ◽  
Fusion Reactor ◽  
Economic Cost ◽  
Single Atom ◽  
Support Interaction ◽  
Fusion Safety ◽  
Metal Support Interaction ◽  
High Efficient ◽  
Metal Support ◽  
Poor Stability

Tritium is indispensable to the fusion reactor engineering, and it must be seriously defended because of its radioactivity and permeability. The method of catalytic oxidation and absorption is the most widely used process for tritium cleanup so far, in which detritiation catalyst is of great importance. The poor stability caused by the agglomeration of noble metal limits the life of detritiation catalysts. Here, Anti–Ostwald Ripening is used to prepare single-atom detritiation catalysts S-Pt/Ce0.7Zr0.3O2 for tritium (HT, DT and T2) oxidation. Single-atom dispersed Pt ensures the catalytic activity and decreased the economic cost. The strong metal-support interaction (SMSI) keeps Pt from aggregating, thus increases the working life of catalyst. And Pd based catalyst supported by a cation ordered κ-Ce2Zr2O8 is prepared for tritiated methane (CH4-xTx) oxidation. Tritiated methane is mostly oxidized by Pd/κ-Ce2Zr2O8 at about 450 °C, which is at least 50 °C lower than normal catalysts (such as Pd/Al2O3).

Electronic Metal–Support Interaction of Single‐Atom Catalysts and Applications in Electrocatalysis

2020 ◽  
Vol 32 (49) ◽  
pp. 2003300 ◽  
Author(s):  
Jiarui Yang ◽  
Wenhao Li ◽  
Dingsheng Wang ◽  
Yadong Li
Keyword(s):  
Single Atom ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support
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