Defect Engineering in Graphene-Confined Single-Atom Iron Catalysts for Room-Temperature Methane Conversion

2021 ◽  
Author(s):  
Xin Tan ◽  
Hassan A. Tahini ◽  
Sean C. Smith
Keyword(s):  
Methane Conversion ◽  
Room Temperature ◽  
Single Atom ◽  
Iron Catalysts ◽  
Defect Engineering

Single–atom manganese and nitrogen co-doped graphene as low-cost catalysts for the efficient CO oxidation at room temperature

2021 ◽  
Vol 536 ◽  
pp. 147809
Author(s):  
Mingming Luo ◽  
Zhao Liang ◽  
Chao Liu ◽  
Xiaopeng Qi ◽  
Mingwei Chen ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Room Temperature ◽  
Low Cost ◽  
Single Atom ◽  
Doped Graphene ◽  
Co Doped

scholarly journals The frontiers of functionalized graphene-based nanocomposites as chemical sensors

2021 ◽  
Vol 10 (1) ◽  
pp. 330-369
Author(s):  
Norizan M. Nurazzi ◽  
Norli Abdullah ◽  
Siti Z. N. Demon ◽  
Norhana A. Halim ◽  
Ahmad F. M. Azmi ◽  
...  
Keyword(s):  
Electron Mobility ◽  
Room Temperature ◽  
Chemical Sensor ◽  
Performance Enhancement ◽  
Ballistic Transport ◽  
Quantum Hall ◽  
Single Atom ◽  
Research Progress ◽  
Thick Sheet ◽  
High Electron

Abstract Graphene is a single-atom-thick sheet of sp2 hybridized carbon atoms that are packed in a hexagonal honeycomb crystalline structure. This promising structure has endowed graphene with advantages in electrical, thermal, and mechanical properties such as room-temperature quantum Hall effect, long-range ballistic transport with around 10 times higher electron mobility than in Si and thermal conductivity in the order of 5,000 W/mK, and high electron mobility at room temperature (250,000 cm2/V s). Another promising characteristic of graphene is large surface area (2,630 m2/g) which has emerged so far with its utilization as novel electronic devices especially for ultrasensitive chemical sensor and reinforcement for the structural component applications. The application of graphene is challenged by concerns of synthesis techniques, and the modifications involved to improve the usability of graphene have attracted extensive attention. Therefore, in this review, the research progress conducted in the previous decades with graphene and its derivatives for chemical detection and the novelty in performance enhancement of the chemical sensor towards the specific gases and their mechanism have been reviewed. The challenges faced by the current graphene-based sensors along with some of the probable solutions and their future improvements are also being included.

Room-temperature Barbier single-atom polymerization induced emission as a versatile approach for the utilization of monofunctional carboxylic acid resources

2021 ◽  
Author(s):  
Quan-Xi Shi ◽  
Qian Li ◽  
Hang Xiao ◽  
Xiaoli Sun ◽  
Hongli Bao ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Carboxylic Acids ◽  
Building Block ◽  
Room Temperature ◽  
Single Atom ◽  
The Earth

Carboxylic acids are widely available from both biomass and fossil sources on the earth. In comparison with multifunctional carboxylic acid containing chemicals those have been comprehensively used as building block...

Chiral "basket handle" binaphthyl porphyrins: synthesis, catalytic epoxidation and NMR conformational studies

2010 ◽  
Vol 14 (07) ◽  
pp. 646-659 ◽  
Author(s):  
Eric Rose ◽  
Emma Gallo ◽  
Nicolas Raoul ◽  
Léa Bouché ◽  
Ariane Pille ◽  
...  
Keyword(s):  
Time Scale ◽  
Room Temperature ◽  
Conformational Equilibrium ◽  
Variable Temperature ◽  
Conformational Exchange ◽  
Iron Catalysts ◽  
Nmr Studies ◽  
Conformational Studies ◽  
H Nmr ◽  
Catalytic Epoxidation

Three "basket handle" porphyrins have been prepared by condensation of tetrakis-(α,β,α,β-2-aminophenyl)porphyrin atropoisomer with 1,1′-binaphthyl, 2,2′-dimethoxy, -3,3′-dicarbonylchloride, -3,3′-diacetylchloride and -3,3′-dipropanoylchloride. The epoxidation of styrene with the three iron catalysts, obtained after metalation of the free porphyrins, occurs with good yields and moderate ee up to 54%. These porphyrins showed unexpected conformational differences, as revealed by NMR spectroscopy. In particular, variable temperature NMR studies showed that the methoxy group in one of them undergoes intermediate conformational exchange on the 1H NMR time scale at room temperature. Lowering the temperature to -50 °C revealed the presence of four states in slow exchange on the NMR time scale. These results evidence a dynamic conformational equilibrium of the binaphthyl handles that adopt different, asymmetric positions with respect to the porphyrin plane.

A promising plasma-catalytic approach towards single-step methane conversion to oxygenates at room temperature

2021 ◽  
Vol 284 ◽  
pp. 119735
Author(s):  
Piu Chawdhury ◽  
Yaolin Wang ◽  
Debjyoti Ray ◽  
Stéphanie Mathieu ◽  
Ni Wang ◽  
...  
Keyword(s):  
Methane Conversion ◽  
Room Temperature ◽  
Single Step

Defect Engineering and Synergistic Effect in Co3O4 Catalysts for Efficient Removal of Formaldehyde at Room Temperature

2020 ◽  
Vol 59 (42) ◽  
pp. 18781-18789
Author(s):  
Jinwei Chen ◽  
Meng Huang ◽  
Wang Chen ◽  
Haiyan Tang ◽  
Yi Jiao ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Room Temperature ◽  
Defect Engineering ◽  
Efficient Removal

scholarly journals High-efficiency direct methane conversion to oxygenates on a cerium dioxide nanowires supported rhodium single-atom catalyst

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Shuxing Bai ◽  
Fangfang Liu ◽  
Bolong Huang ◽  
Fan Li ◽  
Haiping Lin ◽  
...  
Keyword(s):  
Methane Conversion ◽  
Cerium Dioxide ◽  
High Efficiency ◽  
Single Atom

A high performance catalyst for methane conversion to methanol: graphene supported single atom Co

2018 ◽  
Vol 54 (18) ◽  
pp. 2284-2287 ◽  
Author(s):  
Jinyun Yuan ◽  
Wenhua Zhang ◽  
Xingxing Li ◽  
Jinlong Yang
Keyword(s):  
Methane Conversion ◽  
High Performance ◽  
Single Atom ◽  
Reaction Efficiency ◽  
High Reaction

The high reaction efficiency of methane conversion to methanol was predicted over a single atom Co-embedded graphene catalyst.

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