共价键
材料科学
聚合物
纳米复合材料
带隙
热液循环
化学工程
光催化
混合材料
纳米晶
催化作用
纤维素
选择性
化学键
可见光谱
光化学
纳米技术
有机化学
化学
复合材料
光电子学
工程类
作者
Jing Li,Yingxi Xiao,Songting Gu,Ke‐Jun Wu,Xi Zhao,Xiaoyang Zhao,Junmin Nan,Xin Xiao
标识
DOI:10.1016/j.cej.2023.147969
摘要
Biomass-derived nanocomposites represent a developing class of multifunctional materials with biomimetic implications. Here, cellulose nanocrystal interfacially bonded Bi2O2CO3 hybrids (CNC#BOC) were fabricated via a hydrothermal approach for visible-light CO2 photoreduction. The as-synthesized CNC#BOC demonstrated superb photocatalytic activity with a CO production rate of 15.22 μmol g-1 h−1, a selectivity of ∼ 97 %, and excellent cycling stability. Theoretical calculations and experimental studies indicated the existence of covalent bonds between the BOC and CNC, resulting in LMCT photosensitization, a narrowed bandgap energy, plentiful and stable OVs, high reactants affinity, fast electron transfer channels, and facile formation of *COOH intermediate. This study introduces a novel covalent bonding tactic for developing natural polymer-based catalysts for selective CO2 photoreduction, which is expected to broaden the applications of environmentally friendly biomass composites.
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