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Versatile Inorganic Oligomer-based Photochromic Spiropyrane Gels
Jiajia Song, Wei Duan, Yun Chen* and Xiangyang Liu*
In this cover picture, a green inorganic oligomer-based spiropyrans composite gelatinous system is constructed based on the calcium ionic nanocrystalline core controlled by capping agent TEA and the flexible cavities in soft materials surrounding the nanocrystalline. This material exhibits excellent cyclic reversible discoloration properties and application potential for hydrazine detection.
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Selective Electrocatalytic Hydrogenation of 5-Hydroxymethyl-furfural to 2,5-Dihydroxymethylfuran on Bimetallic PdCu Alloy

Xu Yue, Weixing Zhao, Shuangyin Wang and Yuqin Zou*

Chin. J. Struct. Chem. 2022, 41, 2205063-2205069  DOI: 10.14102/j.cnki.0254-5861.2022-0074

May 20, 2022

biomass, 2,5-dihydroxymethylfuran, electrocatalyst, bimetallic alloy, hydrogenation

ABSTRACT

2,5-Dihydroxymethylfuran (DHMF), obtained from 5-hydroxymethylfurfural (HMF) by electrochemical method, is a promising building block for polymers. However, one challenge of this process is to reduce initial potential and improve catalytic selectivity. In this work, the PdCu bimetallic catalyst is prepared with an onset potential of -0.05 VRHE and a selectivity of 99%. Compared with the single Cu electrocatalyst, the adsorption of HMF and proton is improved by introducing of Pd, which is demonstrated by the electrochemical results and hydrogen production rate. This work provides an effective strategy to improve the selectivity of Cu-based electrocatalyst and builds a relationship between the adsorption capacity and the electrocatalytic performance.                   

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