Improved Oxygen Activation over a Carbon/Co3O4 Nanocomposite for Efficient Catalytic Oxidation of Formaldehyde at Room Temperature

2021 ◽  
Vol 55 (6) ◽  
pp. 4054-4063
Author(s):  
Rong Li ◽  
Yu Huang ◽  
Dandan Zhu ◽  
Wingkei Ho ◽  
Junji Cao ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Room Temperature ◽  
Oxygen Activation

Influence of alkali metals on Pd/TiO2 catalysts for catalytic oxidation of formaldehyde at room temperature

2016 ◽  
Vol 6 (7) ◽  
pp. 2289-2295 ◽  
Author(s):  
Yaobin Li ◽  
Changbin Zhang ◽  
Hong He ◽  
Jianghao Zhang ◽  
Min Chen
Keyword(s):  
Catalytic Oxidation ◽  
Alkali Metals ◽  
Room Temperature ◽  
Promotion Effect

We previously observed that sodium (Na) addition had a dramatic promotion effect on Pd/TiO2 catalysts for formaldehyde (HCHO) oxidation.

scholarly journals A single iron site confined in a graphene matrix for the catalytic oxidation of benzene at room temperature

2015 ◽  
Vol 1 (11) ◽  
pp. e1500462 ◽  
Author(s):  
Dehui Deng ◽  
Xiaoqi Chen ◽  
Liang Yu ◽  
Xing Wu ◽  
Qingfei Liu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Low Temperature ◽  
Catalytic Oxidation ◽  
Room Temperature ◽  
Single Atom ◽  
Intermediate Structure ◽  
Oxidation Reactions ◽  
Transmission Electron ◽  
Oxidation Of Benzene

Coordinatively unsaturated (CUS) iron sites are highly active in catalytic oxidation reactions; however, maintaining the CUS structure of iron during heterogeneous catalytic reactions is a great challenge. Here, we report a strategy to stabilize single-atom CUS iron sites by embedding highly dispersed FeN4 centers in the graphene matrix. The atomic structure of FeN4 centers in graphene was revealed for the first time by combining high-resolution transmission electron microscopy/high-angle annular dark-field scanning transmission electron microscopy with low-temperature scanning tunneling microscopy. These confined single-atom iron sites exhibit high performance in the direct catalytic oxidation of benzene to phenol at room temperature, with a conversion of 23.4% and a yield of 18.7%, and can even proceed efficiently at 0°C with a phenol yield of 8.3% after 24 hours. Both experimental measurements and density functional theory calculations indicate that the formation of the Fe═O intermediate structure is a key step to promoting the conversion of benzene to phenol. These findings could pave the way toward highly efficient nonprecious catalysts for low-temperature oxidation reactions in heterogeneous catalysis and electrocatalysis.

Dual-dehydrogenation-promoted catalytic oxidation of formaldehyde on alkali-treated Pt clusters at room temperature

2015 ◽  
Vol 3 (19) ◽  
pp. 10432-10438 ◽  
Author(s):  
Peng Zhou ◽  
Jiaguo Yu ◽  
Longhui Nie ◽  
Mietek Jaroniec
Keyword(s):  
Catalytic Oxidation ◽  
Room Temperature ◽  
Pt Catalysts

Dual dehydrogenation of HCHO molecules can promote the activation of O2 molecules and regeneration of Pt catalysts.

Surface oxygen vacancies on Co3O4 mediated catalytic formaldehyde oxidation at room temperature

2016 ◽  
Vol 6 (11) ◽  
pp. 3845-3853 ◽  
Author(s):  
Zhong Wang ◽  
Wenzhong Wang ◽  
Ling Zhang ◽  
Dong Jiang
Keyword(s):  
Catalytic Oxidation ◽  
Room Temperature ◽  
Oxygen Vacancies ◽  
Essential Role ◽  
Surface Oxygen ◽  
Oxidation Reactions ◽  
Major Activity ◽  
Formaldehyde Oxidation ◽  
The Common

This study reveals the essential role played by surface oxygen vacancies in catalytic oxidation reactions, and complements the common viewpoint that Co3+ is the major activity species in Co3O4-based systems.

Flexible nickel foam decorated with Pt/NiO nanoflakes with oxygen vacancies for enhanced catalytic formaldehyde oxidation at room temperature

2017 ◽  
Vol 4 (11) ◽  
pp. 2215-2224 ◽  
Author(s):  
Shuying Huang ◽  
Xiaofeng Zhu ◽  
Bei Cheng ◽  
Jiaguo Yu ◽  
Chuanjia Jiang
Keyword(s):  
Ambient Temperature ◽  
Catalytic Oxidation ◽  
Room Temperature ◽  
Oxygen Vacancies ◽  
Nickel Foam ◽  
Formaldehyde Oxidation

Flexible nickel foam coated with Pt/NiO nanoflakes was prepared for HCHO catalytic oxidation at ambient temperature.

Co-doped MgAl-LDHs nanosheets supported Au nanoparticles for complete catalytic oxidation of HCHO at room temperature

2019 ◽  
Vol 487 ◽  
pp. 260-271 ◽  
Author(s):  
Shuping Li ◽  
Chizoba I. Ezugwu ◽  
Shuping Zhang ◽  
Ya Xiong ◽  
Shengwei Liu
Keyword(s):  
Catalytic Oxidation ◽  
Room Temperature ◽  
Au Nanoparticles ◽  
Complete Catalytic Oxidation ◽  
Co Doped
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