Enhanced electrocatalytic activities of three dimensional PtCu@Pt bimetallic alloy nanofoams for oxygen reduction reaction

Fu, Shaofang; Zhu, Chengzhou; Shi, Qiurong; Du, Dan; Lin, Yuehe

doi:10.1039/c5cy02288f

Cited by 25 publications

(20 citation statements)

References 50 publications

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“…The elemental mapping further confirmed that the element Pt evenly distributed in the C matrix (Figure e–h). As is well‐known, Pt 1 as a new frontier in heterogeneous catalysis could exhibit unexpected properties due to its atomic scale and superior activity, which is expected to play an active role in synergistically boosting ORR properties of the sample . The surface composition and valence state of H‐PtCo@Pt 1 N‐C were investigated by X‐ray photoelectron spectroscopy (XPS).…”

Section: Resultsmentioning

confidence: 99%

The Quasi‐Pt‐Allotrope Catalyst: Hollow PtCo@single‐Atom Pt₁ on Nitrogen‐Doped Carbon toward Superior Oxygen Reduction

Lai

Zhang

et al. 2019

Adv Funct Materials

108

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Single-atom Pt and bimetallic Pt 3 Co are considered the most promising oxygen reduction reaction (ORR) catalysts, with a much lower price than pure Pt. The combination of single-atom Pt and bimetallic Pt 3 Co in a highly active nanomaterial, however, is challenging and vulnerable to agglomeration under realistic reaction conditions, leading to a rapid fall in the ORR. Here, a sustainable quasi-Pt-allotrope catalyst, composed of hollow Pt 3 Co (H-PtCo) alloy cores and N-doped carbon anchoring single atom Pt shells (Pt 1 N-C), is constructed. This unique nanoarchitecture enables the inner and exterior spaces to be easily accessible, exposing an extra-high active surface area and active sites for the penetration of both aqueous and organic electrolytes. Moreover, the novel Pt 1 N-C shells not only effectively protect the H-PtCo cores from agglomeration but also increase the efficiency of the ORR in virtue of the isolated Pt atoms. Thus, the H-PtCo@Pt 1 N-C catalyst exhibits stable ORR without any fade over a prolonged 10 000 cycle test at 0.9 V in HClO 4 solution. Furthermore, this material can offer efficient and stable ORR activities in various organic electrolytes, indicating its great potential for next-generation lithium-air batteries as well.

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Section: Resultsmentioning

confidence: 99%

The Quasi‐Pt‐Allotrope Catalyst: Hollow PtCo@single‐Atom Pt₁ on Nitrogen‐Doped Carbon toward Superior Oxygen Reduction

Lai

Zhang

et al. 2019

Adv Funct Materials

108

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“…[119][120][121] Moreover, the metal in the core can be effectively protected from dissolution and aggregation. Similar as PtM@Pt nanostructures, the core in MOF-derived NPMNs may have an impact on the electron density of the out shell as well.…”

Section: Mof-derived Npmns With Core-shell Structuresmentioning

confidence: 99%

“…Similar as PtM@Pt nanostructures, the core in MOF-derived NPMNs may have an impact on the electron density of the out shell as well. [119][120][121] Moreover, the metal in the core can be effectively protected from dissolution and aggregation. By combining these advantages, NPMNs with unique core-shell structures are expected to improve the catalytic performance for ORR.…”

Section: Mof-derived Npmns With Core-shell Structuresmentioning

confidence: 99%

Metal‐Organic Framework‐Derived Non‐Precious Metal Nanocatalysts for Oxygen Reduction Reaction

Zhu

Song

et al. 2017

Advanced Energy Materials

Self Cite

326

167

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By virtue of diverse structures and tunable properties, metal‐organic frameworks (MOFs) have presented extensive applications including gas capture, energy storage, and catalysis. Recently, synthesis of MOFs and their derived nanomaterials provide an opportunity to obtain competent oxygen reduction reaction (ORR) electrocatalysts due to their large surface area, controllable composition and pore structure. This review starts with the introduction of MOFs and current challenges of ORR, followed by the discussion of MOF‐based non‐precious metal nanocatalysts (metal‐free and metal/metal oxide‐based carbonaceous materials) and their application in ORR electrocatalysis. Current issues in MOF‐derived ORR catalysts and some corresponding strategies in terms of composition and morphology to enhance their electrocatalytic performance are highlighted. In the last section, a perspective for future development of MOFs and their derivatives as catalysts for ORR is discussed.

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“…One popular strategy to accomplish this goal is forming Pt‐based bimetallic or trimetallic nanomaterials. The addition of another metal in the monometallic nanomaterials will result in the variations in particle size, morphology, chemical and physical properties regarding to catalytic activity and chemical selectivity . For example, Strasser et al.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Bimetallic PtPd Nanoflowers as a Platform to Enhance Electrocatalytic Activity of Acetylcholinesterase for Organophosphate Pesticide Detection

Zhou

et al. 2018

Electroanalysis

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Mesoporous bimetallic PtPd nanoflowers (MPtPdN) were synthesized by a surfactant‐directing method. The MPtPdN was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and wide‐angle X‐ray diffraction (XRD). The use of MPtPdN as a platform for the indirect electrochemical detection of organophosphate pesticides (OPs) via enzymatic inhibition pathway was demonstrated. Due to the nanostructure of MPtPdN and the synergy effect of the noble metal nanoparticles, a novel and sensitive acetylcholinesterase (AChE) biosensor for OPs detections based on MPtPdN and enzyme inhibition was prepared. The inhibition of omethoate exhibited a linear relationship from 4.7×10−11 to 4.7×10−8 M with a detection limit of 1.7×10−12 M (S/N=3). The proposed AChE biosensor was reliable and can be used to measure the concentration of omethoate in different spiked samples with high accuracy and satisfactory recovery. The preparation of biosensors based on the MPtPdN can be further extended to construct many other important enzyme biosensors.

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Enhanced electrocatalytic activities of three dimensional PtCu@Pt bimetallic alloy nanofoams for oxygen reduction reaction

Abstract: Three dimensional PtCu@Pt bimetallic alloy nanofoams show enhanced electrocatalytic activities for oxygen reduction reaction.

Cited by 25 publications

References 50 publications

The Quasi‐Pt‐Allotrope Catalyst: Hollow PtCo@single‐Atom Pt₁ on Nitrogen‐Doped Carbon toward Superior Oxygen Reduction

The Quasi‐Pt‐Allotrope Catalyst: Hollow PtCo@single‐Atom Pt₁ on Nitrogen‐Doped Carbon toward Superior Oxygen Reduction

Metal‐Organic Framework‐Derived Non‐Precious Metal Nanocatalysts for Oxygen Reduction Reaction

Mesoporous Bimetallic PtPd Nanoflowers as a Platform to Enhance Electrocatalytic Activity of Acetylcholinesterase for Organophosphate Pesticide Detection

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Enhanced electrocatalytic activities of three dimensional PtCu@Pt bimetallic alloy nanofoams for oxygen reduction reaction

Abstract: Three dimensional PtCu@Pt bimetallic alloy nanofoams show enhanced electrocatalytic activities for oxygen reduction reaction.

Cited by 25 publications

References 50 publications

The Quasi‐Pt‐Allotrope Catalyst: Hollow PtCo@single‐Atom Pt1 on Nitrogen‐Doped Carbon toward Superior Oxygen Reduction

The Quasi‐Pt‐Allotrope Catalyst: Hollow PtCo@single‐Atom Pt1 on Nitrogen‐Doped Carbon toward Superior Oxygen Reduction

Metal‐Organic Framework‐Derived Non‐Precious Metal Nanocatalysts for Oxygen Reduction Reaction

Mesoporous Bimetallic PtPd Nanoflowers as a Platform to Enhance Electrocatalytic Activity of Acetylcholinesterase for Organophosphate Pesticide Detection

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The Quasi‐Pt‐Allotrope Catalyst: Hollow PtCo@single‐Atom Pt₁ on Nitrogen‐Doped Carbon toward Superior Oxygen Reduction

The Quasi‐Pt‐Allotrope Catalyst: Hollow PtCo@single‐Atom Pt₁ on Nitrogen‐Doped Carbon toward Superior Oxygen Reduction