Ag/white graphene foam for catalytic oxidation of methanol with high efficiency and stability

Zhao, Huijie; Song, Jizhong; Song, Xiufeng; Zhong, Yan; Zeng, Haibo

doi:10.1039/c4ta07053d

Cited by 31 publications

(34 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…138 Using this method, Zeng et al obtained a hybrid nanostructure of Ag/3D h-BN with Ag NPs uniformly distributed on 3D h-BN. 139 As shown in Fig. 3(c), the pure AgNO 3 and 3D h-BN solution did not apparently change color when subjected to UV light, but a significant change in color occurred after the same treatment of a mixed solution of AgNO 3 and 3D h-BN, demonstrating the successful synthesis of the Ag/3D BN composite.…”

Section: Preparation Of Hybrid Nanostructures Of Metal Nps/2d Materialsmentioning

confidence: 77%

“…3(d) and (e)). 139 In summary, small and uniform metal NPs can be decorated on 2D materials using photocatalytic reduction, as shown in Fig. 3(b) and (e).…”

Section: Preparation Of Hybrid Nanostructures Of Metal Nps/2d Materialsmentioning

confidence: 87%

“…Reproduced with permission. 139 precursors to metal NPs, other semiconductors can be introduced into the synthetic systems to produce more electrons and holes for a more efficient photocatalytic reduction reaction. 137 Using photocatalytic reduction, metal NPs can also be deposited on other 2D materials.…”

Section: Preparation Of Hybrid Nanostructures Of Metal Nps/2d Materialsmentioning

confidence: 99%

See 2 more Smart Citations

Hybrid nanostructures of metal/two-dimensional nanomaterials for plasmon-enhanced applications

2016

View full text Add to dashboard Cite

Hybrid nanostructures composed of graphene or other two-dimensional (2D) nanomaterials and plasmonic metal components have been extensively studied. The unusual properties of 2D materials are associated with their atomically thin thickness and 2D morphology, and many impressive structures enable the metal nanomaterials to establish various interesting hybrid nanostructures with outstanding plasmonic properties. In addition, the hybrid nanostructures display unique optical characteristics that are derived from the close conjunction of plasmonic optical effects and the unique physicochemical properties of 2D materials. More importantly, the hybrid nanostructures show several plasmonic electrical effects including an improved photogeneration rate, efficient carrier transfer, and a plasmon-induced "hot carrier", playing a significant role in enhancing device performance. They have been widely studied for plasmon-enhanced optical signals, photocatalysis, photodetectors (PDs), and solar cells. In this review, the developments in the field of metal/2D hybrid nanostructures are comprehensively described. Preparation of hybrid nanostructures is first presented according to the 2D material type, as well as the metal nanomaterial morphology. The plasmonic properties and the enabled applications of the hybrid nanostructures are then described. Lastly, possible future research in this promising field is discussed.

show abstract

Section: Preparation Of Hybrid Nanostructures Of Metal Nps/2d Materialsmentioning

confidence: 77%

“…3(d) and (e)). 139 In summary, small and uniform metal NPs can be decorated on 2D materials using photocatalytic reduction, as shown in Fig. 3(b) and (e).…”

Section: Preparation Of Hybrid Nanostructures Of Metal Nps/2d Materialsmentioning

confidence: 87%

Section: Preparation Of Hybrid Nanostructures Of Metal Nps/2d Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid nanostructures of metal/two-dimensional nanomaterials for plasmon-enhanced applications

2016

View full text Add to dashboard Cite

show abstract

“…[35][36][37][38] Recent experimental studies also showed that Ag supported by BN nanosheets with good thermal stability can be used as an effective catalyst for the reduction of p-nitrophenol 39,40 and the methanol oxidation reaction. 41 Moreover, a SAC with Ag on MnO x has been fabricated and proved to be efficient in catalyzing HCHO oxidation. 42,43 For the rational design of SACs and also for the optimization of their catalytic performance, it is very important to provide theoretical explanations of these experimental findings.…”

Section: Introductionmentioning

confidence: 99%

A promising single atom catalyst for CO oxidation: Ag on boron vacancies of h-BN sheets

Yang

et al. 2017

Phys. Chem. Chem. Phys.

101

View full text Add to dashboard Cite

Single atom catalysts (SACs) have attracted broad research interest in recent years due to their importance in various fields, such as environmental protection and energy conversion. Here, we discuss the mechanisms of CO oxidation to CO 2 over single Ag atoms supported on hexagonal boron-nitride sheets (Ag 1 /BN) through systematic van der Waals inclusive density functional theory (DFT-D)calculations. The Ag adatom can be anchored onto a boron defect (V B ), as suggested by the large energy barrier of 3.12 eV for Ag diffusion away from the V B site. Three possible mechanisms (i.e., Eley-Rideal, Langmuir-Hinshelwood, and termolecular Eley-Rideal) of CO oxidation over Ag 1 /BN are investigated. Due to ''CO-Promoted O 2 Activation'', the termolecular Eley-Rideal (TER) mechanism is the most relevant one for CO oxidation over Ag 1 /BN and the rate-limiting reaction barrier is only 0.33 eV. More importantly, the first principles molecular dynamics simulations confirm that CO oxidation via the TER mechanism may easily occur at room temperature. Analyses with the inclusion of temperature and entropy effects further indicate that the CO oxidation via the TER mechanism over Ag 1 /BN is thermodynamically favorable in a broad range of temperatures.

show abstract

“…Previous studies have shown that GO are perfect supports for various metal nanoparticles, and many attempts have been made to prepare GO or RGO hybrids by incorporating metal nanoparticles for the enhancement of certain properties . Silver/graphene composites materials have attracted considerable attention due to the good performance and low cost of Ag, compared with Au, Pt, and Pd . The knowledge of the reaction kinetics of the catalytic reaction is important for scale‐up applications.…”

Section: Introductionmentioning

confidence: 99%

Silver/graphene nanocomposites as catalysts for the reduction of p‐nitrophenol to p‐aminophenol: Materials preparation and reaction kinetics studies

Liu

et al. 2017

Can J Chem Eng

View full text Add to dashboard Cite

Ag/graphene nanocomposites have been demonstrated to be promising catalysts for hydrogenation reduction of p-nitrophenol (p-NP) to p-aminophenol (p-AP). Herein, we reported the synthesis of graphene-supported silver nanoparticles (Ag/G) using one-step and stabilizer-free process. The obtained Ag/G nanocomposites were demonstrated to be efficient catalysts for the reduction of p-NP to p-AP. The reaction kinetics of the catalytic reduction, including the effects of catalyst concentrations and temperatures are reported. These results are of significant values for the scale-up of using Ag/graphene catalysts for hydrogenation reduction.

show abstract

Ag/white graphene foam for catalytic oxidation of methanol with high efficiency and stability

Abstract: Oxidation of methanol not only eliminates contamination due to typical volatile organic compounds (VOCs), but also provides clean energy.

Cited by 31 publications

References 37 publications

Hybrid nanostructures of metal/two-dimensional nanomaterials for plasmon-enhanced applications

Hybrid nanostructures of metal/two-dimensional nanomaterials for plasmon-enhanced applications

A promising single atom catalyst for CO oxidation: Ag on boron vacancies of h-BN sheets

Silver/graphene nanocomposites as catalysts for the reduction of p‐nitrophenol to p‐aminophenol: Materials preparation and reaction kinetics studies

Contact Info

Product

Resources

About