scholarly journals Transformation of the designed metal centers in a MOF to single atom catalytic sites via microwave heating

2020 ◽  
Author(s):  
Qingdong Li ◽  
Hongbin Yang ◽  
Junjie Ouyang ◽  
Mikhail Solovyev ◽  
Nicole Lahanas ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Single Atom ◽  
Metal Centers ◽  
Catalytic Sites

scholarly journals Transformation of the designed metal centers in a MOF to single atom catalytic sites via microwave heating

2020 ◽  
Author(s):  
Qingdong Li ◽  
Hongbin Yang ◽  
Junjie Ouyang ◽  
Mikhail Solovyev ◽  
Nicole Lahanas ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Single Atom ◽  
Metal Centers ◽  
Catalytic Sites

scholarly journals Transformation of the designed metal centers in a MOF to single atom catalytic sites via microwave heating

2020 ◽  
Author(s):  
Qingdong Li ◽  
Hongbin Yang ◽  
Junjie Ouyang ◽  
Mikhail Solovyev ◽  
Nicole Lahanas ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Single Atom ◽  
Metal Centers ◽  
Catalytic Sites

scholarly journals Transformation of the designed metal centers in a MOF to single atom catalytic sites via microwave heating

2020 ◽  
Author(s):  
Qingdong Li ◽  
Hongbin Yang ◽  
Junjie Ouyang ◽  
Mikhail Solovyev ◽  
Nicole Lahanas ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Single Atom ◽  
Metal Centers ◽  
Catalytic Sites

scholarly journals Transformation of the designed metal centers in a MOF to single atom catalytic sites via microwave heating

2020 ◽  
Author(s):  
Qingdong Li ◽  
Hongbin Yang ◽  
Junjie Ouyang ◽  
Mikhail Solovyev ◽  
Nicole Lahanas ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Single Atom ◽  
Metal Centers ◽  
Catalytic Sites

scholarly journals Insights on forming N,O-coordinated Cu single-atom catalysts for electrochemical reduction CO2 to methane

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yanming Cai ◽  
Jiaju Fu ◽  
Yang Zhou ◽  
Yu-Chung Chang ◽  
Qianhao Min ◽  
...  
Keyword(s):  
Energy Barrier ◽  
Active Sites ◽  
Theoretical Calculations ◽  
High Energy ◽  
Single Atom ◽  
Faradaic Efficiency ◽  
High Energy Barrier ◽  
Catalytic Sites ◽  
Electron Reduction ◽  
First Time

AbstractSingle-atom catalysts (SACs) are promising candidates to catalyze electrochemical CO2 reduction (ECR) due to maximized atomic utilization. However, products are usually limited to CO instead of hydrocarbons or oxygenates due to unfavorable high energy barrier for further electron transfer on synthesized single atom catalytic sites. Here we report a novel partial-carbonization strategy to modify the electronic structures of center atoms on SACs for lowering the overall endothermic energy of key intermediates. A carbon-dots-based SAC margined with unique CuN2O2 sites was synthesized for the first time. The introduction of oxygen ligands brings remarkably high Faradaic efficiency (78%) and selectivity (99% of ECR products) for electrochemical converting CO2 to CH4 with current density of 40 mA·cm-2 in aqueous electrolytes, surpassing most reported SACs which stop at two-electron reduction. Theoretical calculations further revealed that the high selectivity and activity on CuN2O2 active sites are due to the proper elevated CH4 and H2 energy barrier and fine-tuned electronic structure of Cu active sites.

Structural Rule of N-Coordinated Single Atomic Catalysts for Electrochemical CO2 Reduction

2022 ◽  
Author(s):  
Zhenxin Lou ◽  
Wenjing Li ◽  
Haiyang Yuan ◽  
Yu Hou ◽  
Huagui Yang ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Single Atom ◽  
Structural Rule ◽  
Metal Centers ◽  
Nitrogen Doped ◽  
Electrochemical Co2 Reduction

Metal single-atom catalysts (SACs) on nitrogen-doped carbons exhibit an attractive prospect in catalysis. However, how to quickly collocate various metal centers with diversified N-coordination topologic structures to maximize the catalytic...

scholarly journals Interfacial-confined coordination to single-atom nanotherapeutics

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Limei Qin ◽  
Jie Gan ◽  
Dechao Niu ◽  
Yueqiang Cao ◽  
Xuezhi Duan ◽  
...  
Keyword(s):  
Therapeutic Strategy ◽  
Single Atom ◽  
Oxygen Species ◽  
High Quality ◽  
Efficient Energy ◽  
Coordination Strategy ◽  
Single Atoms ◽  
Highly Active ◽  
Narrow Bandgap ◽  
Catalytic Sites

AbstractPursuing and developing effective methodologies to construct highly active catalytic sites to maximize the atomic and energy efficiency by material engineering are attractive. Relative to the tremendous researches of carbon-based single atom systems, the construction of bio-applicable single atom materials is still in its infancy. Herein, we propose a facile and general interfacial-confined coordination strategy to construct high-quality single-atom nanotherapeutic agent with Fe single atoms being anchored on defective carbon dots confined in a biocompatible mesoporous silica nanoreactor. Furthermore, the efficient energy conversion capability of silica-based Fe single atoms system has been demonstrated on the basis of the exogenous physical photo irradiation and endogenous biochemical reactive oxygen species stimulus in the confined mesoporous network. More importantly, the highest photothermal conversion efficiency with the mechanism of increased electron density and narrow bandgap of this single atom structure in defective carbon was proposed by the theoretical DFT calculations. The present methodology provides a scientific paradigm to design and develop versatile single atom nanotherapeutics with adjustable metal components and tune the corresponding reactions for safe and efficient tumor therapeutic strategy.

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