title: Efficient light harvesting over a CdS/In2O3photonic crystal photocatalyst for hydrogenation of 4-nitroaniline to p-phenylenediamine.
abstract: Efficient light harvesting was observed over CdS photodeposited on In2O3photonic crystals during the photocatalytic hydrogenation of 4-nitroaniline to p-phenylenediamine. The highest conversion of 4-nitroaniline and selectivity of p-phenylenediamine over the In2O3photonic crystal supported CdS were ∼93% and ∼99%, respectively, which were better than that achieved for commercial hexagonal CdS. The existence of the photonic crystal structure was responsible for the higher efficiency of In2O3photonic crystal supported CdS. The ordered structure facilitated the mass transport. The elaborate tuning of the photonic band gap activated the slow photon enhancement effect on the blue edge for intensifying the light harvesting efficiency of CdS. Moreover, CdS supported on In2O3photonic crystals exhibited higher photocatalytic stability than that on the In2O3nanocrystals. The mechanism of photocatalytic hydrogenation over In2O3photonic crystal supported CdS was discussed. Our results provided guidance for efficiently utilizing light for photocatalysis by applying photonic crystals as support.
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, P. R. China. dzli@fzu.edu.cn.
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Li
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, P. R. China. dzli@fzu.edu.cn.
authors.forename: Changqian
authors.initials: C
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, P. R. China. dzli@fzu.edu.cn.
authors.forename: Bo
authors.initials: B
authors.lastname: Li
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, P. R. China. dzli@fzu.edu.cn.
authors.forename: Yu
authors.initials: Y
authors.lastname: Shao
authors.affiliation: State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, P. R. China. dzli@fzu.edu.cn.
authors.forename: Danzhen
authors.identifier: http://orcid.org/0000-0003-4044-0310
authors.initials: D
authors.lastname: Li