甘油的选择性光电化学氧化制备高附加值二羟基丙酮

Liu Dong, Liu Jin-Cheng, Cai Weizheng, Ma Jun, Yang Hong Bin, Xiao Hai, Li Jun, Xiong Yujie, Huang Yanqiang, Liu Bin

School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.

Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University, Beijing, 100084, China.

Nat Commun. 2019 Apr 16;10(1):1779. doi: 10.1038/s41467-019-09788-5.

It is highly profitable to transform glycerol - the main by-product from biodiesel production to high value-added chemicals. In this work, we develop a photoelectrochemical system based on nanoporous BiVO for selective oxidation of glycerol to 1,3-dihydroxyacetone - one of the most valuable derivatives of glycerol. Under AM 1.5G front illumination (100 mW cm) in an acidic medium (pH = 2) without adscititious oxidant, the nanoporous BiVO photoanode achieves a glycerol oxidation photocurrent density of 3.7 mA cm at a potential of 1.2 V versus RHE with 51% 1,3-dihydroxyacetone selectivity, equivalent to a production rate of 200 mmol of 1,3-dihydroxyacetone per m of illumination area in one hour.

将甘油（生物柴油生产的主要副产物）转化为高附加值化学品具有很高的利润。在这项工作中，我们开发了一种基于纳米多孔BiVO的光电化学系统，用于将甘油选择性氧化为1,3 - 二羟基丙酮（甘油最有价值的衍生物之一）。在AM 1.5G前照光（100 mW/cm²）下，于酸性介质（pH = 2）中且无外加氧化剂的情况下，纳米多孔BiVO光阳极在相对于可逆氢电极（RHE）为1.2 V的电位下实现了3.7 mA/cm²的甘油氧化光电流密度，1,3 - 二羟基丙酮选择性为51%，相当于每平方米光照面积每小时可生产200 mmol的1,3 - 二羟基丙酮。