Glycine-Assisted Fabrication of N-Doped Graphene-Supported Uniform Multipetal PtAg Nanoflowers for Enhanced Ethanol and Ethylene Glycol Oxidation

Zhang, Yangping; Gao, Fei; Song, Pingping; Wang, Jin; Guo, Jun; Shiraishi, Yukihide; Du, Yukou

doi:10.1021/acssuschemeng.8b05020

Cited by 69 publications

(30 citation statements)

References 64 publications

(98 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to Pt, the positive effect of nitrogen‐doped carbon materials has also been confirmed by the high performance of highly dispersed PtAg NG and PtSn NPs on NG for EOR and the ethylene glycol oxidation reaction (EGOR) . Compared with the PtAg, PtAg NPs deposited on the NG are more uniformly distributed with smaller size (Figure ) . In addition, the peak current density of G‐A PtAg/NG (3598.4 mA mg −1 ) is 1.33 and 3.61 times higher than those of G‐A PtAg and commercial Pt/C, respectively.…”

Section: Heteroatom‐doped Carbon Supportsmentioning

confidence: 97%

Intrinsic Effect of Carbon Supports on the Activity and Stability of Precious Metal Based Catalysts for Electrocatalytic Alcohol Oxidation in Fuel Cells: A Review

Zhang

Xiang

et al. 2020

ChemSusChem

View full text Add to dashboard Cite

Electrocatalyst supports, in particular carbonaceous materials, play critical roles in the electrocatalytic activity and stability of precious metal group (PMG)‐based catalysts such as Pt, Pd, and Au for the electrochemical alcohol oxidation reaction (AOR) of fuels such as methanol and ethanol in polymer electrolyte membrane fuel cells (PEMFCs). Carbonaceous supports such as high surface area carbon provide electronic contact throughout the catalyst layer, isolate PMG nanoparticles (NPs) to maintain high electrochemical surface area, and provide hydrophobic properties to avoid flooding of the catalyst layer by liquid water produced. Compared to high surface area carbon, PMG catalysts supported on 1D and 2D carbon materials such as graphene and carbon nanotubes show enhanced activity and durability due to the intrinsic effect of the underlying carbonaceous supports on the electronic states of PMG NPs. The modification of the electronic environment, in particular the d‐band centers of PMG NPs, weakens the adsorption of AOR intermediates, facilitates breaking of the C−C bonds, and thus enhances the electrocatalytic activity of PMG catalysts. The doping of heteroatoms further facilitates the electrocatalytic activity for the AOR through the structural, bifunctional, and electronic effects, in addition to the enhanced dispersion of PMG NPs in the carbon support. The prospects for the development of effective PMG‐based catalysts for high‐performance alcohol‐fuel‐based PEMFCs is discussed.

show abstract

Section: Heteroatom‐doped Carbon Supportsmentioning

confidence: 97%

Intrinsic Effect of Carbon Supports on the Activity and Stability of Precious Metal Based Catalysts for Electrocatalytic Alcohol Oxidation in Fuel Cells: A Review

Zhang

Xiang

et al. 2020

ChemSusChem

View full text Add to dashboard Cite

show abstract

“…Furthermore, recent observations demonstrated that the activity and stability are significantly enhanced through doping nonmetal elements such as boron, nitrogen, sulfur, into graphene due to the strong chemical binding between catalyst and support and the electronic structure modification of the catalysts [136–142] . Nitrogen doped graphene (NG) as a support for PtAg nanostructures have been engineered to act as high‐performance electrocatalysts to EOR and EGOR (Figure 7b) [143] . The MA toward EOR and EGOR reaches up to 3598.4 and 4587.2 mA mg −1 , respectively.…”

Section: Advanced Strategies For High‐performance Aor Electrocatalystsmentioning

confidence: 99%

Platinum‐Based Electrocatalysts for Direct Alcohol Fuel Cells: Enhanced Performances toward Alcohol Oxidation Reactions

Zhao

Fang

et al. 2021

ChemPlusChem

View full text Add to dashboard Cite

Figure 2. a) Average size of Pt nanoparticles prepared under different pH values. [51] b) SA and MA values of commercial Pt/C and Pt nanoparticles with various sizes toward EGOR. [51] Reproduced from Ref. [51] with permission. Copyright (2020) Elsevier. c) Size distribution of Pt cluster treated at different temperatures. [52] d) CV curves for MOR of a monolayer single Pt atoms on the thiolated multiwalled carbon nanotube (PtÀ S-MWNT), Pt clusters on multiwalled carbon nanotubes with eliminated thiol at different temperature

show abstract

“…The surface effect and ultrathin structure endow 2 D nanostructures with fascinating physicochemical properties that are inaccessible to their 0 D, 1 D, and 3 D counterparts . Therefore, the fabrication of nanomaterials with unique 2 D morphology has attracted intense research interest in recent years.…”

Section: Two‐dimensional Nanostructuresmentioning

confidence: 99%

Recent Achievements in Noble Metal Catalysts with Unique Nanostructures for Liquid Fuel Cells

Sun

2020

ChemSusChem

Self Cite

View full text Add to dashboard Cite

In recent years, research efforts have been focused on the design and fabrication of highly efficient catalysts for liquid fuel cells, because the use of these cells is an important approach for alleviating environmental pollution and energy crises. However, the limitations of the catalytic performance of industrial Pt/C have strongly hindered the development of these fuel cells. The catalyst morphology has a strong impact on its performance; nanostructured catalysts are preferred as they offer large specific surface area and more exposed active centers. In view of this, many catalysts with unique structures have been synthesized in recent years, all of which show excellent catalytic performance characteristics. Despite these achievements, few efforts have been made to survey this field comprehensively. Herein, the recent advances in catalysts for liquid fuel cells are summarized, with a focus on noble metal catalysts with unique morphologies such as nanowires, nanosheets, and assembly structures. Their formation mechanisms are discussed critically. The relationship between the unique morphologies and excellent performance of these catalysts is also explored. This work may provide guidelines for the further development of liquid fuel cells.

show abstract

Glycine-Assisted Fabrication of N-Doped Graphene-Supported Uniform Multipetal PtAg Nanoflowers for Enhanced Ethanol and Ethylene Glycol Oxidation

Cited by 69 publications

References 64 publications

Intrinsic Effect of Carbon Supports on the Activity and Stability of Precious Metal Based Catalysts for Electrocatalytic Alcohol Oxidation in Fuel Cells: A Review

Intrinsic Effect of Carbon Supports on the Activity and Stability of Precious Metal Based Catalysts for Electrocatalytic Alcohol Oxidation in Fuel Cells: A Review

Platinum‐Based Electrocatalysts for Direct Alcohol Fuel Cells: Enhanced Performances toward Alcohol Oxidation Reactions

Recent Achievements in Noble Metal Catalysts with Unique Nanostructures for Liquid Fuel Cells

Contact Info

Product

Resources

About