Efficient dual-function catalysts for triiodide reduction reaction and hydrogen evolution reaction using unique 3D network aloe waste-derived carbon-supported molybdenum-based bimetallic oxide nanohybrids
Efficient dual-function catalysts for triiodide reduction reaction and hydrogen evolution reaction using unique 3D network aloe waste-derived carbon-supported molybdenum-based bimetallic oxide nanohybrids
复制标题
使用独特的3D网络芦荟废物衍生的碳载钼基双金属氧化物纳米杂化物，用于三碘化物还原反应和析氢反应的高效双功能催化剂
DOI：
10.1016/j.apcatb.2020.119004
复制
发表时间：
2020-09-15
影响因子：
22.1
通讯作者：
Qiao, Xinying
中科院分区：
文献类型：
--
作者：
Han, Feng;Yun, Sining;Qiao, Xinying
高效催化剂的开发已成为能源转化领域的热点。本研究采用共沉淀法合成了一系列三维网络芦荟废弃物衍生碳（3D- awc）负载的钼基双金属氧化物纳米杂化材料（ZnMoO4/3D-AWC、Cu3Mo2O9/3D-AWC和MnMoO4/3D-AWC）。得益于钼基双金属氧化物与3D-AWC的协同作用，电催化剂对三碘化物还原反应（IRR）和析氢反应（HER）的催化活性得到增强。ZnMoO4/3D-AWC催化剂的太阳能电池器件效率为7.65%，与Pt（6.74%）相当，而ZnMoO4/3D-AWC催化剂在1.0 M KOH下为HER提供了54 mV dec（-1）的Tafel斜率，与Pt/C具有相当的性能。此外，3d - awc负载的钼基双金属氧化物纳米杂化催化剂在IRR和HER中表现出优异的电化学稳定性。通过第一性原理DFT计算，从电子结构和功函数两个方面阐述了催化机理。该研究为设计多畴能场的高性能催化剂提供了参考。
The development of highly efficient catalysts has attracted great attention in energy conversion field. In this work, a series of 3D network aloe waste-derived carbon (3D-AWC)-supported molybdenum-based bimetallic oxide nanohybrids (ZnMoO4/3D-AWC, Cu3Mo2O9/3D-AWC, and MnMoO4/3D-AWC) were synthesized via co-precipitation method. Benefiting from the synergistic effect of molybdenum-based bimetallic oxide and 3D-AWC, the catalytic activities of electrocatalysts for triiodide reduction reaction (IRR) and hydrogen evolution reaction (HER) were enhanced. Solar cell with ZnMoO4/3D-AWC obtained device efficiency of 7.65%, comparable to that with Pt (6.74%), while ZnMoO4/3D-AWC catalyst delivered a Tafel slope (54 mV dec(-1)) in 1.0 M KOH for HER, which demonstrated a comparable property to Pt/C. In addition, the 3D-AWC-supported molybdenum-based bimetallic oxide nanohybrid catalysts exhibited superior electrochemical stability in IRR and HER. The catalytic mechanism was illustrated from electronic structure and work function by first-principle DFT calculations. This research provides a reference in designing high-performance catalysts for multi-domain energy fields.