Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, Liaoning, China.
Angew Chem Int Ed Engl. 2022 Oct 17;61(42):e202210745. doi: 10.1002/anie.202210745. Epub 2022 Sep 12.
CO and H evolution from renewable and abundant biomass represent a sustainable way, but is challenged to be produced under mild conditions. Herein, we propose to produce CO and H from biomass via a divided photoelectrochemical (PEC) cell at room temperature. Nitrogen doped tungsten trioxide (N-WO ) photoanode reforms biopolyols to CO and H , and platinum cathode reduces H to H , achieving CO evolution rate of 45 mmol m h (>75 % gas selectivity) and H evolution rate of 237 mmol m h with purity >99.99 % from glycerol. The nitrogen doping induces structure polarity of WO photoanode, leading to the formation of an internal electric field which promotes the separation and transfer of the photoinduced charges and improves PEC efficiency. A wide range of biopolyols, such as ethylene glycol, xylose, fructose, glucose, sucrose, lactose, maltose, and inulin were effectively converted into CO and H . This work provides a promising method to produce highly pure H together with CO from biomass.
从可再生和丰富的生物质中产生 CO 和 H 是一种可持续的方式，但在温和条件下生产具有挑战性。在此，我们提出在室温下通过分置光电化学 (PEC) 电池从生物质中生产 CO 和 H 。氮掺杂氧化钨 (N-WO ) 光阳极将生物多元醇重整为 CO 和 H ，而铂阴极将 H 还原为 H ，从而使甘油的 CO 生成速率达到 45mmol·m -2 ·h -1 (>75%气体选择性)，H 生成速率达到 237mmol·m -2 ·h -1 ，纯度 >99.99%。氮掺杂诱导 WO 光阳极的结构极性，形成内电场，促进光生载流子的分离和转移，提高 PEC 效率。一系列生物多元醇，如乙二醇、木糖、果糖、葡萄糖、蔗糖、乳糖、麦芽糖和菊粉，都有效地转化为 CO 和 H 。这项工作为从生物质中生产高纯度 H 与 CO 提供了一种很有前景的方法。
