CO catalytic oxidation on Al-doped graphene-like ZnO monolayer sheets: a first-principles study

Ma, Dongwei; Wang, Qinggao; Li, Tingxian; Tang, Zhenjie; Yang, Gui; He, Chaozheng; Lu, Zhansheng

doi:10.1039/c5tc02071a

Cited by 61 publications

(34 citation statements)

References 75 publications

(115 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This process initiates the oxidation of the carbonyl center first, followed by complete oxidation and recycling of the catalytically active center. The hypothesis for the mechanism presented here is reasonable and in line with reports on catalytic effects for CO oxidation, but extensive catalytic investigations are necessary in the future to substantiate it.…”

Section: Resultssupporting

confidence: 87%

“…For instance in ref . it has been shown that the catalytic CO oxidation benefits from doping of the metal oxide support, and one has assumed the dopant near the semiconductor surfaces can act as a catalytic center leading to a carbonyl C activation . The reaction of CO with surface‐bound oxygen resulting in CO 2 also takes place, when carbon monoxide is detected using a gas sensor.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Catalytically Doped Semiconductors for Chemical Gas Sensing: Aerogel‐Like Aluminum‐Containing Zinc Oxide Materials Prepared in the Gas Phase

Hagedorn

Liang

et al. 2016

Adv Funct Materials

View full text Add to dashboard Cite

Atmospheric contamination with organic compounds is undesired in industry and in society because of odor nuisance or potential toxicity. Resistive gas sensors made of semiconducting metal oxides are effective in the detection of gases even at low concentration. Major drawbacks are low selectivity and missing sensitivity toward a targeted compound. Acetaldehyde is selected due to its high relevance in chemical industry and its toxic character. Considering the similarity between gas-sensing and heterogeneous catalysis (surface reactions, activity, selectivity), it is tempting to transfer concepts. A question of importance is how doping and the resulting change in electronic properties of a metal-oxide support with semiconducting properties alters reactivity of the surfaces and the functionality in gas-sensing and in heterogeneous catalysis. A gas-phase synthesis method is employed for aerogel-like zinc oxide materials with a defi ned content of aluminum (n-doping), which were then used for the assembly of gas sensors. It is shown that only Al-doped ZnO represents an effective sensor material that is sensitive down to very low concentrations (<350 ppb). The advance in properties relates to a catalytic effect for the doped semiconductor nanomaterial.

show abstract

Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Catalytically Doped Semiconductors for Chemical Gas Sensing: Aerogel‐Like Aluminum‐Containing Zinc Oxide Materials Prepared in the Gas Phase

Hagedorn

Liang

et al. 2016

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…Ma et al [36] found that Al-doped g-ZnO mono-layers (in which Al atoms substitute host Zn atoms) show good catalytic activity for CO oxidation via the Eley-Rideal mechanism with a two-step route. In this mechanism, the first CO molecule directly interacts with the pre-adsorbed O 2 molecule, forming a carbonate-like CO 3 complex as an intermediate state.…”

Section: Catalytic Activity G-znomentioning

confidence: 99%

Graphene-Like ZnO: A Mini Review

Zhao

Pohl

et al. 2016

Crystals

View full text Add to dashboard Cite

Abstract:The isolation of a single layer of graphite, known today as graphene, not only demonstrated amazing new properties but also paved the way for a new class of materials often referred to as two-dimensional (2D) materials. Beyond graphene, other 2D materials include h-BN, transition metal dichalcogenides (TMDs), silicene, and germanene, to name a few. All tend to have exciting physical and chemical properties which appear due to dimensionality effects and modulation of their band structure. A more recent member of the 2D family is graphene-like zinc oxide (g-ZnO) which also holds great promise as a future functional material. This review examines current progress in the synthesis and characterization of g-ZnO. In addition, an overview of works dealing with the properties of g-ZnO both in its pristine form and modified forms (e.g., nano-ribbon, doped material, etc.) is presented. Finally, discussions/studies on the potential applications of g-ZnO are reviewed and discussed.

show abstract

“…Ma et al [137] found that Al-doped graphene-like Zinc Oxide (g-ZnO) mono-layers in which Al atoms substitute host Zn atoms show good catalytic activity for CO oxidation via the Eley-Rideal mechanism with a two-step route. In this mechanism, the first CO molecule directly interacts with the pre-adsorbed O 2 molecule, forming a carbonate-like CO 3 complex as an intermediate state.…”

Section: Catalytic Activitymentioning

confidence: 99%

A Review of Two-Dimensional Materials in Electrocatalysis and Their Potential Applications

Muhammad¹

2019

AJMSP

View full text Add to dashboard Cite

Two-dimensional materials are crystalline materials consist of a single layer of atoms and sometimes referred to as single layer materials. Electrocatalytic energy conversion using renewable power sources is one of the most promising ways for energy storage and energy utilization in the new century. Over the past years, a great number of two-dimensional (2D) materials have been explored for various electrocatalytic reactions, such as the hydrogen evolution reaction, Carbon (IV) oxide (CO 2) reduction reaction and Oxygen (O 2) reduction reaction. This research provides an overview on the synthesis techniques of materials including bottom up approaches such as chemical vapor deposition (CVD) and physical vapor deposition (PVD) and top-down approaches like mechanical exfoliation, chemical exfoliation. Then, the characterization techniques of the two-dimensional (2D) materials such as Raman spectroscopy, X-ray diffraction, temperature-dependent resistivity and magnetic susceptibility and scanning tunneling microscopy (STM) are reviewed. Finally, potential applications of two-dimensional (2D) materials and conclusion, challenges and future work are discussed.

show abstract

CO catalytic oxidation on Al-doped graphene-like ZnO monolayer sheets: a first-principles study

Abstract: Three mechanisms for CO catalytic oxidation on Al-doped g-ZnO monolayer sheets were comparably studied, among which the Eley–Rideal mechanism is both energetically and dynamically more favorable.

Cited by 61 publications

References 75 publications

Catalytically Doped Semiconductors for Chemical Gas Sensing: Aerogel‐Like Aluminum‐Containing Zinc Oxide Materials Prepared in the Gas Phase

Catalytically Doped Semiconductors for Chemical Gas Sensing: Aerogel‐Like Aluminum‐Containing Zinc Oxide Materials Prepared in the Gas Phase

Graphene-Like ZnO: A Mini Review

A Review of Two-Dimensional Materials in Electrocatalysis and Their Potential Applications

Contact Info

Product

Resources

About