Au single atom-anchored WO<sub>3</sub>/TiO<sub>2</sub>nanotubes for the photocatalytic degradation of volatile organic compounds

Wang, Xiaoguang; Pan, Honghui; Sun, Minghui; Zhang, Yanrong

doi:10.1039/d1ta08143h

Cited by 41 publications

(22 citation statements)

References 55 publications

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“…The synergistic effects between high-density single atoms (e.g., Fe, Co, Mo, W, and Au) and above supports can effectively improve the capturing capacity of visible light, the binding energy with oxygen, and the charge separation behavior, thus promoting the surface reactions of catalytic oxidation (see Figure 18 and Table 3 for details). [176,[188][189][190][191] In 2018, Guo and co-workers reported a g-C 3 N 4 -supported single atom Fe catalyst (I-FeN x /g-C 3 N 4 -5) with a high density A-C) Reproduced with permission. [188] Copyright 2018, American Chemical Society.…”

Section: Photocatalytic Degradation Of Organic Pollutantsmentioning

confidence: 99%

“…), it is an ideal strategy to develop and design high-performance SACs in high site densities. [189,191] Recently, Zeng and co-workers reported an effective photocatalyst (Mo/NV-TCN) for degradation of tetracycline, prepared by constructing high-site-density Mo species (%4 atoms nm À2 ) on the nitrogen vacancy (NV) tubular porous g-C 3 N 4 (TCN) (see Figure 18E-H). [189] The large specific surface area of the tubular structure helps to inhibit the agglomeration of Mo atoms, while NV leads to the formation of a stable Mo-N 2 C 2 configuration between TCN and Mo sites (see Figure 18E).…”

Section: Photocatalytic Degradation Of Organic Pollutantsmentioning

confidence: 99%

“…In the above section, we have introduced the high-density AFC design and photocatalytic applications of different noble metals (such as Pt, [56,[166][167][168][169] Ag, [164,165] Au [191] ) and different transition metal (such as Cu, [52,57,175] Co, [150,176] Fe, [188] Mo, [189] Zn, [177] Sb [174] ) single-atom structures on diversified photoactive materials (such as g-C 3 N 4 , [57,150,164,165,174,176,188,189] MOFs, [52,192] TiO 2 , [168,191] Fe 3 O 4 , [190] BiVO 4 , [169] NC [176,177] ). Generally, the ultrahigh-density single-dispersed metal-active sites can effectively promote the migration of photogenerated carriers, localize photogenerated electrons, and change the band structure of the substrate materials.…”

Section: Brief Summary Of Afcs On Photocatalysismentioning

confidence: 99%

“…The synergistic effects between high‐density single atoms (e.g., Fe, Co, Mo, W, and Au) and above supports can effectively improve the capturing capacity of visible light, the binding energy with oxygen, and the charge separation behavior, thus promoting the surface reactions of catalytic oxidation (see Figure and Table 3 for details). [ 176,188–191 ]…”

Section: Heterogeneous Catalysis Applications Of Afcsmentioning

confidence: 99%

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confidence: 99%

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Emerging Ultrahigh‐Density Single‐Atom Catalysts for Versatile Heterogeneous Catalysis Applications: Redefinition, Recent Progress, and Challenges

Liao

et al. 2022

Small Structures

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In recent years, single‐atom catalysts (SACs) with high metal loading have emerged in different heterogeneous catalysis fields and shown extraordinary catalytic properties. When there are enough coordination atoms (or functional groups) on the supports, it is possible to achieve a limit monolayer atom loading on the surface of supports with ultrahigh atom density (5–15 atoms nm−2) and extremely close site distance (0.2–0.5 nm), by using appropriate synthesis methods and procedures. These high‐density metal atoms usually have no or less metal bonds, which are mostly isolated by support atoms to form 3D foam‐like atomic constructions. Herein, a new notion of metal atomic foam catalysts (AFCs) is propsed to redefine these ultrahigh‐density SACs accommodated by specific supports. This new paradigm of 3D atomic construction for SACs has potential significance for both theoretical research and industrial applications. The latest major advancements in the controllable synthesis of AFCs on various supports (e.g., polymer, carbon, and metallic compound) via different methods (bottom‐up or top‐down approaches) are summarized. The latent catalytic principles and typical application cases of AFCs are emphasized in a wide range of heterogeneous catalysis fields (e.g., thermocatalysis, photocatalysis, electrocatalysis, etc.). The challenges and prospects of this newly 3D ultrahigh‐density AFCs materials in practical industrial application are pointed out as well.

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Section: Photocatalytic Degradation Of Organic Pollutantsmentioning

confidence: 99%

Section: Photocatalytic Degradation Of Organic Pollutantsmentioning

confidence: 99%

Section: Brief Summary Of Afcs On Photocatalysismentioning

confidence: 99%

Section: Heterogeneous Catalysis Applications Of Afcsmentioning

confidence: 99%

mentioning

confidence: 99%

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Emerging Ultrahigh‐Density Single‐Atom Catalysts for Versatile Heterogeneous Catalysis Applications: Redefinition, Recent Progress, and Challenges

Liao

et al. 2022

Small Structures

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Co Single Atoms and CoO_x Nanoclusters Anchored on Ce_0.75Zr_0.25O₂ Synergistically Boosts the NO Reduction by CO

Liu,

Ji,

Liu

et al. 2023

Adv Funct Materials

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Achieving high NO conversion and N2 selectivity in selective catalytic reduction of NO by CO (CO‐SCR) in a wide operating temperature window, particularly in the presence of high O2 concentration, remains a big challenge. Herein, guided by density functional theory (DFT) calculations, a catalyst is rationally developed with dual active centers consisting of both Co single‐atoms (SAs) and CoOx nanoclusters (NCs) co‐anchored on Ce0.75Zr0.25O2 support (CZO), which show above 99.7% NO conversion and 100% N2 selectivity at 250–400 °C under 5 vol% O2. DFT calculation and experimental results confirm a strong interaction among Co SAs, CoOx NCs, and CZO support. Co SAs enhance CO adsorption and accompany the oxygen vacancies (OVs) formation in CZO, while the CoOx NCs promote both NO conversion to nitrate intermediate and the breakage of the NO bond at OVs, thus synergistically boosting the N2 formation.

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Catalytic CO₂ Conversion to C1 Chemicals over Single‐Atom Catalysts

Zhang,

Yang,

Liu

et al. 2023

Advanced Energy Materials

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Carbon dioxide, as an abundant and nontoxic C1 resource, can be extensively applied to produce C1 building blocks via direct and indirect routes. On account of the stable electronic structure and high activation energy of CO2, the most challenging problem of CO2 conversion is the rational design of low‐cost and efficient catalysts with attractive performance. Single‐atom catalysts (SACs) with atomically dispersed metal atoms, strong metal–support interaction, and tunable/unsaturated coordination environment offer a potential choice by achieving maximum atomic utilization and lowering the CO2 activation barrier. Furthermore, the geometric and electronic structure of SACs can be easily regulated by tuning the coordination environment of single atoms, which significantly affects their catalytic performance. In this review, therefore, a comprehensive review of thermocatalytic CO2 conversion to C1 chemicals over SACs is presented. Specifically, the physiochemical and electronic properties, synthesis methods, and characterization technologies are introduced. Thereafter, an overview of catalytic performance and mechanism of SACs is described during thermocatalytic CO2 conversion to C1 chemicals. Finally, the main limitations of current studies on CO2 conversion to C1 chemicals over SACs are summarized, and simultaneouslyperspectives on the future are proposed, in order to provide a guidance for decarbonizing the industries and cycling greenhouse gases.

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Au single atom-anchored WO₃/TiO₂nanotubes for the photocatalytic degradation of volatile organic compounds

Abstract: Anchoring Au atoms on WO3/TiO2 nanotubes by a simple two-step electrochemical approach significantly improved the photocatalytic degradation of toluene, due to the enhanced transfer and separation of photogenerated carriers and adsorption.

Cited by 41 publications

References 55 publications

Emerging Ultrahigh‐Density Single‐Atom Catalysts for Versatile Heterogeneous Catalysis Applications: Redefinition, Recent Progress, and Challenges

Emerging Ultrahigh‐Density Single‐Atom Catalysts for Versatile Heterogeneous Catalysis Applications: Redefinition, Recent Progress, and Challenges

Co Single Atoms and CoO_x Nanoclusters Anchored on Ce_0.75Zr_0.25O₂ Synergistically Boosts the NO Reduction by CO

Catalytic CO₂ Conversion to C1 Chemicals over Single‐Atom Catalysts

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Au single atom-anchored WO3/TiO2nanotubes for the photocatalytic degradation of volatile organic compounds

Abstract: Anchoring Au atoms on WO3/TiO2 nanotubes by a simple two-step electrochemical approach significantly improved the photocatalytic degradation of toluene, due to the enhanced transfer and separation of photogenerated carriers and adsorption.

Cited by 41 publications

References 55 publications

Emerging Ultrahigh‐Density Single‐Atom Catalysts for Versatile Heterogeneous Catalysis Applications: Redefinition, Recent Progress, and Challenges

Emerging Ultrahigh‐Density Single‐Atom Catalysts for Versatile Heterogeneous Catalysis Applications: Redefinition, Recent Progress, and Challenges

Co Single Atoms and CoOx Nanoclusters Anchored on Ce0.75Zr0.25O2 Synergistically Boosts the NO Reduction by CO

Catalytic CO2 Conversion to C1 Chemicals over Single‐Atom Catalysts

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Product

Resources

About

Au single atom-anchored WO₃/TiO₂nanotubes for the photocatalytic degradation of volatile organic compounds

Co Single Atoms and CoO_x Nanoclusters Anchored on Ce_0.75Zr_0.25O₂ Synergistically Boosts the NO Reduction by CO

Catalytic CO₂ Conversion to C1 Chemicals over Single‐Atom Catalysts