基于半导体和纳米金属的高效人工光合成材料体系构建与应用
发布时间:2018-07-09 16:45
本文选题:综述 + 人工光合成 ; 参考:《中国材料进展》2017年01期
【摘要】:通过人工光合成技术把二氧化碳转换成碳氢化合物燃料,是人类梦寐以求的一种太阳能化学转化和利用的理想技术,近年来受到科学界和工业界越来越广泛的关注。从以下3个技术途径综述了近年来基于半导体和纳米金属的宽光谱响应高效人工光合成材料体系的构建与应用:(1)从人工光合成热力学条件出发,基于半导体能带工程设计制备新型高效人工光合成材料;(2)利用纳米贵金属表面等离子共振效应,设计和制备基于纳米金属的宽广谱响应人工光合成体系,可以有效拓展其光吸收范围至近红外区;(3)利用Ⅷ过度族金属光热效应,设计与制备基于Ⅷ族金属纳米粒子的全光谱响应人工光合成体系,可以有效拓展光吸收范围至红外区,使人工光合成体系具有全光谱响应。特别关注在上述人工光合成材料体系中非极性CO_2分子活化、表/界面现象及光化学反应微观机制,为开发高效人工光合成材料体系提供理论和实验依据。
[Abstract]:The conversion of carbon dioxide to hydrocarbon fuel by artificial light synthesis technology is an ideal technology for chemical conversion and utilization of solar energy, which has attracted more and more attention from scientific and industrial circles in recent years. The construction and application of high efficiency synthetic materials based on wide spectral response of semiconductors and nanometallic materials in recent years are reviewed from the following three technical approaches: (1) starting from the thermodynamic conditions of artificial light synthesis, Based on the semiconductor energy band engineering design, a new type of high efficiency synthetic materials was prepared. (2) based on the surface plasmon resonance effect of nanometer precious metals, the wide spectrum response artificial light synthesis system based on nanometer metals was designed and fabricated. It can effectively expand the optical absorption range to near infrared region. (3) by using the photothermal effect of 鈪,
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