Unveiling the Adsorption Behavior and Redox Properties of PtNi Nanowire for Biomass- Derived Molecules Electrooxidation

被引：84

作者：

Wu, Jingcheng ^{[1
]}

Kong, Zhijie ^{[1
,2
]}

Li, Yingying ^{[1
]}

Lu, Yuxuan ^{[1
]}

Zhou, Peng ^{[1
]}

Wang, Hongfang ^{[1
]}

Xu, Leitao ^{[1
]}

Wang, Shuangyin ^{[1
]}

Zou, Yuqin ^{[1
]}

机构：

[1] Hunan Univ, Coll Chem & Chem Engn, Adv Catalyt Engn Res Ctr, Natl Supercomp Ctr Changsha,State Key Lab Chem Bio, Changsha 410082, Peoples R China

[2] Jishou Univ, Sch Chem & Chem Engn, Jishou 416000, Hunan, Peoples R China

来源：

ACS NANO | 2022年 / 16卷 / 12期

基金：

国家重点研发计划; 中国博士后科学基金; 中国国家自然科学基金;

关键词：

electrochemical biomass conversion; 5-hydroxymethylfurfural; bimetallic electrocatalyst; adsorption behavior; redox properties; EFFICIENT; EVOLUTION; OXIDATION; ALCOHOL; VALORIZATION; ALDEHYDE; SITES; ALLOY;

D O I：

10.1021/acsnano.2c10327

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ni-based materials are auspicious electrocatalysts for 5-hydroxymethylfurfural oxidation reaction (HMFOR), including the adsorption and conversion of HMF and OHad on the electrocatalyst surface. However, the intrinsic HMFOR activity of Ni-based catalysts is far from satisfactory due to the weak adsorption of HMF and OHad species. Herein, a set of PtxNi100-x bundle nanowires (NWs) were prepared for HMFOR, which enables a low onset-potential and large current density. Operando methods reveal that Pt modulates the redox property of Ni in PtNi NWs and accelerates the oxidation of Ni2+-OH to Ni3+-O species during HMFOR. Moreover, the adsorption studies demonstrate the synergetic roles of Pt and Ni in enhancing the HMFOR activity by forming Pt-O-Ni bonds. In detail, Ni atoms modulate the d band of Pt to alter the adsorption behavior of HMF. Pt atoms promote the adsorption of OHad on Ni sites. This work provides design principles for HMFOR electrocatalysts by modulating the adsorption behaviors of organic molecules and OHad.

引用

页码：21518 / 21526

页数：9

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