Conversion of water and carbon dioxide into methanol with solar energy on Au/Co nanostructured surfaces
Conversion of water and carbon dioxide into methanol with solar energy on Au/Co nanostructured surfaces
复制标题
太阳能在Au/Co纳米结构表面上将水和二氧化碳转化为甲醇
DOI：
10.1088/2053-1591/ab7d0e
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发表时间：
2020-03-01
影响因子：
2.3
通讯作者：
Shen, Mengyan
中科院分区：
文献类型：
--
作者：
Zhu, Qinghua;Wang, Cong;Shen, Mengyan
将二氧化碳（CO2）和水（H2O）转化为甲醇（CH3OH）是通过人工光合作用过程实现的，该过程利用基于钴（Co）微粒的光催化剂和太阳能在一个简单的封闭反应器中进行。该光催化剂是通过将钴微粒表面暴露于飞秒激光照射在氯化金（AuCl）溶液中制备的。观察了光催化剂表面的形貌和复合结构，发现其表面是一层二氧化钴纳米薄片，上面沉积了一些金纳米颗粒。金纳米颗粒通过等离子体效应收集太阳光能量。Au纳米粒子吸收的能量产生电子和空穴，激发吸附在CoO纳米结构表面的H2O和CO2分子，在CoO表面形成受激氢(H-2)*和受激一氧化碳(CO)*。被激发的分子在CoO表面结合形成CH3OH。Au/CoO/Co纳米结构表面有助于开发一种低成本的方法，将太阳能转化为甲醇形式的化学能。
Conversion of carbon dioxide (CO2) and water (H2O) to methanol (CH3OH) is achieved through an artificial photosynthesis procedure utilizing cobalt (Co) micro-particle based photocatalyst and solar energy in a simple, closed reactor. The photocatalyst is fabricated by exposing the surfaces of cobalt microparticles to femtosecond laser irradiation in a gold chloride (AuCl) solution. The morphology and composite of the photocatalyst surfaces were observed and detected to be a layer of cobalt dioxide (CoO) nano-flakes on which some gold (Au) nanoparticles were deposited. The Au nanoparticles harvest the Sunlight energy through a plasmonic effect. The energy absorbed by Au nanoparticles creates electrons and holes which excite the H2O and CO2 molecules adsorbed on CoO nanostructure surfaces to form excited hydrogen (H-2)* and excited carbon monoxide (CO)* on the CoO surface. The excited molecules combine to form CH3OH on the CoO surface. The Au/CoO/Co nanostructured surfaces are useful for developing a low-cost method to convert solar energy to chemical energy in the form of methanol.