Localized Surface Plasmon Resonance Assisted Photothermal Catalysis of CO and Toluene Oxidation over Pd–CeO2 Catalyst under Visible Light Irradiation
Localized Surface Plasmon Resonance Assisted Photothermal Catalysis of CO and Toluene Oxidation over Pd–CeO2 Catalyst under Visible Light Irradiation
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DOI：
10.1021/acs.jpcc.6b08630
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发表时间：
2016-12
影响因子：
3.7
通讯作者：
Jinshuo Zou;Zhichun Si;Yidan Cao;Rui Ran;Xiaodong Wu;D. Weng
中科院分区：
文献类型：
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作者：
Jinshuo Zou;Zhichun Si;Yidan Cao;Rui Ran;Xiaodong Wu;D. Weng
Pd颗粒的消光峰一般位于紫外光区，表明只有4%的太阳光可以被吸收。此外，由于载流子的快速弛豫，LSPR热电子转化为化学能的效率很低。设计对可见光辐射响应强、对化学能具有较高光子效率的Pd基催化剂是非常有价值的。采用十六烷基三甲基溴化铵(CTAB)辅助液相还原法制备了Pd-CeO2催化剂，以产生更多的活性界面。Pd-CeO2在可见光至近红外区的显著消光表明Pd与CeO2之间存在较强的电子相互作用。LSPR热电子从Pd金属颗粒转移到CeO_2的导带，促进了吸附氧的解离。因此，可见光照射可以显著降低CO和甲苯的氧化反应温度。妈妈..。
The extinction peak of Pd particles generally locates at the ultraviolet light region, suggesting that only 4% of solar light can be absorbed. Furthermore, the efficiency of LSPR hot electrons converted to chemical energy of reaction is very low due to the fast relaxation of carriers. It is extremely valuable to design Pd-based catalysts which have strong response to the visible light irradiation and high efficiency in photon to chemical energy. The Pd–CeO2 catalyst was synthesized via the hexadecyltrimethylammonium bromide (CTAB) assisted liquid-phase reduction method to generate more active interfaces. The significant extinction of Pd–CeO2 in the visible to near-infrared region indicates the strong electron interaction between Pd and CeO2. LSPR hot electrons, transferring from the Pd metal particles to the conduction band of ceria, promote the dissociation of adsorbed oxygen. Therefore, the reaction temperature of CO and toluene oxidation can be significantly lowered by visible light irradiation. The ma...