Highly Efficient Catalytic Properties of Sc and Fe Single Atoms Stabilized on Honeycomb Borophene/Al(111) heterostructure via a Dual Charge transfer effect

Nanoscale ◽  
2021 ◽  
Author(s):  
Mengru Ren ◽  
Lili Zhang ◽  
Yan Di Zhu ◽  
Jin Lei Shi ◽  
Xing Ju Zhao ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Heterogeneous Catalysis ◽  
Catalytic Properties ◽  
Transfer Effect ◽  
Single Atom ◽  
Single Atoms ◽  
Highly Efficient ◽  
Theoretical Design ◽  
Metal Atoms

Theoretical design and experimental fabrication of highly efficient single-atom catalysts (SACs) containing isolated metal atoms monodispersed on appropriate substrates have surged to the forefront of heterogeneous catalysis in recent years....

Photoinduced Synergistic Catalysis on Zn Single-Atom-Loaded Hierarchical Porous Carbon for Highly Efficient CO2 Cycloaddition Conversion

2021 ◽  
Author(s):  
Lin Gong ◽  
Ji Sun ◽  
Yousong Liu ◽  
Guangcheng Yang
Keyword(s):  
Solar Energy ◽  
Porous Carbon ◽  
Single Atom ◽  
Hierarchical Porous Carbon ◽  
Reaction Conditions ◽  
Synergistic Catalysis ◽  
Single Atoms ◽  
Significant Challenge ◽  
Highly Efficient ◽  
Hierarchical Porous

The use of solar energy to drive efficient CO2 cycloaddition conversion under mild reaction conditions is highly desired but remains a significant challenge. In this communication, a Zn single-atoms-loaded N-doped...

Rare-Earth Single-Atom La–N Charge-Transfer Bridge on Carbon Nitride for Highly Efficient and Selective Photocatalytic CO2 Reduction

ACS Nano ◽  
2020 ◽  
Vol 14 (11) ◽  
pp. 15841-15852
Author(s):  
Peng Chen ◽  
Ben Lei ◽  
Xing’an Dong ◽  
Hong Wang ◽  
Jianping Sheng ◽  
...  
Keyword(s):  
Rare Earth ◽  
Charge Transfer ◽  
Carbon Nitride ◽  
Co2 Reduction ◽  
Single Atom ◽  
Highly Efficient

scholarly journals Pt single-atoms supported on nitrogen-doped carbon dots for highly efficient photocatalytic hydrogen generation

2020 ◽  
Vol 8 (29) ◽  
pp. 14690-14696 ◽  
Author(s):  
Hui Luo ◽  
Ying Liu ◽  
Stoichko D. Dimitrov ◽  
Ludmilla Steier ◽  
Shaohui Guo ◽  
...  
Keyword(s):  
High Activity ◽  
Carbon Dots ◽  
Hydrogen Generation ◽  
Single Atom ◽  
Nitrogen Doped ◽  
Single Atoms ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Pt single-atom catalysts prepared via photo-deposition on nitrogen-doped carbon dots exhibit high activity and stability towards photocatalytic H2 production.

scholarly journals Ligand-Metal Charge Transfer Induced via Adjustment of Textural Properties Controls the Performance of Single-Atom Catalysts During Photocatalytic Degradation

2021 ◽  
Author(s):  
Jiaxu Liu ◽  
Yajun Zou ◽  
Daniel Cruz ◽  
Aleksandr Savateev ◽  
Markus Antonietti ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Heterogeneous Catalysts ◽  
Photophysical Properties ◽  
Organic Pollutant ◽  
Textural Properties ◽  
Single Atom ◽  
Single Atoms ◽  
Ligand Charge Transfer ◽  
Kinetic Investigations

Because of their peculiar nitrogen-rich structure, carbon nitrides are convenient polydentate ligands for designing single-atom-dispersed photocatalysts. However, the relation of catalysts textural properties with their photophysical properties and as a result activity in photocatalytic applications is rarely elaborated. Herein we report the preparation and characterization of a series of single-atom heterogeneous catalysts featuring highly-dispersed Ag and Cu species on mesoporous graphitic C<sub>3</sub>N<sub>4</sub>. We show that adjustment of materials textural properties and thereby metal single atoms coordination mode enables ligand-to-metal (LMCT) or ligand-to-metal-to-ligand charge transfer (LMLCT), a property tha was long speculated in single-atom catalysis but never observed. We employ the developed materials in the degradation of organic pollutant under irradiation with visible light. Kinetic investigations under flow conditions show that single atoms of Ag and Cu decrease the amount of toxic organic fragmentation products, while leading to a higher selectivity towards full calcination. The results correlate with the selected mode of charge transfer in the designed photocatalysts and provide a new understanding of the surface state of single-atom catalysts. The concepts can be exploited further to rationally design and optimize other single-atom materials.

Surface oxygen vacancies promoted Pt redispersion to single-atom for enhanced photocatalytic hydrogen evolution

2021 ◽  
Author(s):  
Jinmeng Cai ◽  
Ang Cao ◽  
Zhenbin Wang ◽  
Siyu Lu ◽  
Zheng Jiang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Oxygen Vacancies ◽  
Catalytic Properties ◽  
Spillover Effect ◽  
Hydrogen Spillover ◽  
Single Atom ◽  
Surface Oxygen ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Atoms

Isolating metal atoms on supports for catalysis has attracted great attention for researchers due to the unique catalytic properties. Here we show by utilizing the hydrogen spillover effect at high...

scholarly journals Ligand-Metal Charge Transfer Induced via Adjustment of Textural Properties Controls the Performance of Single-Atom Catalysts During Photocatalytic Degradation

2021 ◽  
Author(s):  
Jiaxu Liu ◽  
Yajun Zou ◽  
Daniel Cruz ◽  
Aleksandr Savateev ◽  
Markus Antonietti ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Heterogeneous Catalysts ◽  
Photophysical Properties ◽  
Organic Pollutant ◽  
Textural Properties ◽  
Single Atom ◽  
Single Atoms ◽  
Ligand Charge Transfer ◽  
Kinetic Investigations

Because of their peculiar nitrogen-rich structure, carbon nitrides are convenient polydentate ligands for designing single-atom-dispersed photocatalysts. However, the relation of catalysts textural properties with their photophysical properties and as a result activity in photocatalytic applications is rarely elaborated. Herein we report the preparation and characterization of a series of single-atom heterogeneous catalysts featuring highly-dispersed Ag and Cu species on mesoporous graphitic C<sub>3</sub>N<sub>4</sub>. We show that adjustment of materials textural properties and thereby metal single atoms coordination mode enables ligand-to-metal (LMCT) or ligand-to-metal-to-ligand charge transfer (LMLCT), a property tha was long speculated in single-atom catalysis but never observed. We employ the developed materials in the degradation of organic pollutant under irradiation with visible light. Kinetic investigations under flow conditions show that single atoms of Ag and Cu decrease the amount of toxic organic fragmentation products, while leading to a higher selectivity towards full calcination. The results correlate with the selected mode of charge transfer in the designed photocatalysts and provide a new understanding of the surface state of single-atom catalysts. The concepts can be exploited further to rationally design and optimize other single-atom materials.

scholarly journals Radical-Assisted Formation of Pd Single Atoms or Nanoclusters on Biochar

2020 ◽  
Vol 8 ◽  
Author(s):  
Chong Xiang ◽  
Qingya Liu ◽  
Lei Shi ◽  
Zhenyu Liu
Keyword(s):  
Active Sites ◽  
Catalytic Properties ◽  
Single Atom ◽  
Walnut Shell ◽  
Palladium Acetate ◽  
Free Atmosphere ◽  
Single Atoms ◽  
Radical Concentration ◽  
First Time

Supported single atom or nanocluster catalysts have been widely studied due to their excellent catalytic properties. Many methods to prepare such catalysts start with constructing defects on supports, and the main focus is to improve dispersion and stability of the active sites. This paper for the first time reports a radical-assisted method to prepare single atom or nanocluster Pd on a biochar. The char was prepared by pyrolyzing walnut shell at 600°C under N2, and Pd was loaded on the char by impregnating with palladium acetate in toluene under an oxygen-free atmosphere. It is found that there are three types of radicals in the fresh char (F-Char-600), two of them may adsorb/bond with O2 or Pd2+ resulting in decreases in the char's radical concentration. The Pd on F-Char-600 for 24 h impregnation are single atoms (0.1–0.3 nm, 2%) and nanoclusters (0.3–1.2 nm, 98%), which grow larger (0.3–4 nm, 100%) for 84 h impregnation. The Pd on N2 purged O2-adsorbed-char (N-O-Char-600) is much larger in size. The bond between Pd and char is probably C–Pd in F-Char-600 or C–O–Pd in N-O-Char-600.

Formamide-derived “glue” for hundred-gram scale synthesis of atomically dispersed iron-nitrogen-carbon electrocatalysts

Nanoscale ◽  
2021 ◽  
Author(s):  
Zong-Ge Li ◽  
Yan Ma ◽  
Yiyan Wang ◽  
Nianxi Liu ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Mass Production ◽  
High Performance ◽  
Low Cost ◽  
Single Atom ◽  
Distinct Structure ◽  
Metal Atoms ◽  
New Frontier ◽  
Maximum Utilization

he distinct structure and maximum utilization of metal atoms on supported single-atom catalysts (SAC) empowers a new frontier of heterogeneous catalysis, yet the low-cost mass production of high-performance SAC is...

Sign in / Sign up

Export Citation Format

Share Document