Bimetallic Composition-Promoted Electrocatalytic Hydrodechlorination Reaction on Silver-Palladium Alloy Nanoparticles

Yiyin Peng; Meiyang Cui; Zhiyong Zhang; Song Shu; Xuelin Shi; John T. Brosnahan; Chang Liu; Yulu Zhang; Perrin Godbold; Xianming Zhang; Fan Dong; Guangming Jiang; Sen Zhang

doi:10.1021/acscatal.9b02282

Bimetallic Composition-Promoted Electrocatalytic Hydrodechlorination Reaction on Silver-Palladium Alloy Nanoparticles

Yiyin Peng
, Meiyang Cui
, Zhiyong Zhang
, Song Shu
, Xuelin Shi
, John T. Brosnahan
, Chang Liu
, Yulu Zhang
, Perrin Godbold
, Xianming Zhang
, Fan Dong
, Guangming Jiang
, Sen Zhang

Surface Chemistry & Catalysis Group

Research output: Contribution to journal › Article › peer-review

188 Scopus citations

Abstract

Studies of the electrocatalytic hydrodechlorination (EHDC) reaction using monodisperse AgPd nanoparticle (NP) model catalysts in the present work reveal the essential role of the catalytically inert Ag component in promoting bimetallic nanocatalyst's activity for the conversion of 2,4-dichlorophenol (2,4-DCP) to phenol (P). The EHDC reaction rate, current efficiency, and product selectivity were systematically investigated, leading to the observation of a volcano-type activity dependence on the Ag content in bimetallic NPs. The combination of kinetics analyses and density functional theory calculations demonstrates that the balance of 2,4-DCP adsorption and P desorption is the dominant factor for EHDC efficiency rather than other processes (e.g., hydrogen adsorbent formation). The presence of Ag, if precisely controlled in the proper range, alleviates the overstrong adsorption of P, allowing for a much enhanced EHDC kinetics compared to single-component Pd. This work provides a deep understanding of the EHDC mechanism over bimetallic nanocatalysts and a facile approach to optimizing this important environmental electrocatalysis strategy.

Original language	English
Pages (from-to)	10803-10811
Number of pages	9
Journal	ACS Catalysis
DOIs	https://doi.org/10.1021/acscatal.9b02282
State	Published - 2019

Funding

Y.P., S.S., X.S., X.Z., F.D., and G.J. acknowledge the support from National Natural Science Foundation of China (51878105) and the Program for the Top Young Talents of Chongqing. M.C., Z.Z., J.T.B., C.L., Y.Z., P.G., and S.Z. acknowledge the support from the University of Virginia Faculty Startup Fund.

Keywords

bimetallic nanocatalyst
electrocatalysis
environmental remediation
hydrodechlorination
persistent organic pollutants

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10.1021/acscatal.9b02282

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@article{7ae69599f49149a297af556161940130,

title = "Bimetallic Composition-Promoted Electrocatalytic Hydrodechlorination Reaction on Silver-Palladium Alloy Nanoparticles",

abstract = "Studies of the electrocatalytic hydrodechlorination (EHDC) reaction using monodisperse AgPd nanoparticle (NP) model catalysts in the present work reveal the essential role of the catalytically inert Ag component in promoting bimetallic nanocatalyst's activity for the conversion of 2,4-dichlorophenol (2,4-DCP) to phenol (P). The EHDC reaction rate, current efficiency, and product selectivity were systematically investigated, leading to the observation of a volcano-type activity dependence on the Ag content in bimetallic NPs. The combination of kinetics analyses and density functional theory calculations demonstrates that the balance of 2,4-DCP adsorption and P desorption is the dominant factor for EHDC efficiency rather than other processes (e.g., hydrogen adsorbent formation). The presence of Ag, if precisely controlled in the proper range, alleviates the overstrong adsorption of P, allowing for a much enhanced EHDC kinetics compared to single-component Pd. This work provides a deep understanding of the EHDC mechanism over bimetallic nanocatalysts and a facile approach to optimizing this important environmental electrocatalysis strategy.",

keywords = "bimetallic nanocatalyst, electrocatalysis, environmental remediation, hydrodechlorination, persistent organic pollutants",

author = "Yiyin Peng and Meiyang Cui and Zhiyong Zhang and Song Shu and Xuelin Shi and Brosnahan, \{John T.\} and Chang Liu and Yulu Zhang and Perrin Godbold and Xianming Zhang and Fan Dong and Guangming Jiang and Sen Zhang",

note = "Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

doi = "10.1021/acscatal.9b02282",

language = "English",

pages = "10803--10811",

journal = "ACS Catalysis",

issn = "2155-5435",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Bimetallic Composition-Promoted Electrocatalytic Hydrodechlorination Reaction on Silver-Palladium Alloy Nanoparticles

AU - Peng, Yiyin

AU - Cui, Meiyang

AU - Zhang, Zhiyong

AU - Shu, Song

AU - Shi, Xuelin

AU - Brosnahan, John T.

AU - Liu, Chang

AU - Zhang, Yulu

AU - Godbold, Perrin

AU - Zhang, Xianming

AU - Dong, Fan

AU - Jiang, Guangming

AU - Zhang, Sen

PY - 2019

Y1 - 2019

N2 - Studies of the electrocatalytic hydrodechlorination (EHDC) reaction using monodisperse AgPd nanoparticle (NP) model catalysts in the present work reveal the essential role of the catalytically inert Ag component in promoting bimetallic nanocatalyst's activity for the conversion of 2,4-dichlorophenol (2,4-DCP) to phenol (P). The EHDC reaction rate, current efficiency, and product selectivity were systematically investigated, leading to the observation of a volcano-type activity dependence on the Ag content in bimetallic NPs. The combination of kinetics analyses and density functional theory calculations demonstrates that the balance of 2,4-DCP adsorption and P desorption is the dominant factor for EHDC efficiency rather than other processes (e.g., hydrogen adsorbent formation). The presence of Ag, if precisely controlled in the proper range, alleviates the overstrong adsorption of P, allowing for a much enhanced EHDC kinetics compared to single-component Pd. This work provides a deep understanding of the EHDC mechanism over bimetallic nanocatalysts and a facile approach to optimizing this important environmental electrocatalysis strategy.

AB - Studies of the electrocatalytic hydrodechlorination (EHDC) reaction using monodisperse AgPd nanoparticle (NP) model catalysts in the present work reveal the essential role of the catalytically inert Ag component in promoting bimetallic nanocatalyst's activity for the conversion of 2,4-dichlorophenol (2,4-DCP) to phenol (P). The EHDC reaction rate, current efficiency, and product selectivity were systematically investigated, leading to the observation of a volcano-type activity dependence on the Ag content in bimetallic NPs. The combination of kinetics analyses and density functional theory calculations demonstrates that the balance of 2,4-DCP adsorption and P desorption is the dominant factor for EHDC efficiency rather than other processes (e.g., hydrogen adsorbent formation). The presence of Ag, if precisely controlled in the proper range, alleviates the overstrong adsorption of P, allowing for a much enhanced EHDC kinetics compared to single-component Pd. This work provides a deep understanding of the EHDC mechanism over bimetallic nanocatalysts and a facile approach to optimizing this important environmental electrocatalysis strategy.

KW - bimetallic nanocatalyst

KW - electrocatalysis

KW - environmental remediation

KW - hydrodechlorination

KW - persistent organic pollutants

UR - https://www.scopus.com/pages/publications/85074764489

U2 - 10.1021/acscatal.9b02282

DO - 10.1021/acscatal.9b02282

M3 - Article

AN - SCOPUS:85074764489

SN - 2155-5435

SP - 10803

EP - 10811

JO - ACS Catalysis

JF - ACS Catalysis

ER -

Bimetallic Composition-Promoted Electrocatalytic Hydrodechlorination Reaction on Silver-Palladium Alloy Nanoparticles

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