20461-54-5Relevant articles and documents
Influence of external electric fields on reaction fronts in the iodate-arsenous acid system
Forstova, Lenka,Sevcikova, Hana,Marek, Milos,Merkin, John H.
, p. 9136 - 9143 (2000)
The propagation of arsenous acid-iodate reaction fronts of different net stoichiometries in externally applied dc electric fields is studied for a range of both electric field intensities and initial compositions of the reacting mixture (represented by the stoichiometric factor S0). Regions of three different types of net stoichiometry in the parametric space E/V vs S0, where E is the intensity of the applied electric field and V the reaction front propagation velocity, are determined both experimentally and by analyzing a reaction-diffusion-migration model that includes a realistic kinetic scheme of the reaction studied. Both agreement with and discrepancies between the theoretical predictions and experimental findings are discussed.
A Novel Single-Atom Electrocatalyst Ti1/rGO for Efficient Cathodic Reduction in Hybrid Photovoltaics
Liang, Suxia,Zhu, Chao,Zhang, Naitian,Zhang, Shuo,Qiao, Botao,Liu, Hua,Liu, Xiaoyan,Liu, Zheng,Song, Xuedan,Zhang, Heming,Hao, Ce,Shi, Yantao
, (2020/04/15)
Single-atom catalysts (SACs) are a frontier research topic in the catalysis community. Carbon materials decorated with atomically dispersed Ti are theoretically predicted with many attractive applications. However, such material has not been achieved so far. Herein, a Ti-based SAC, consisting of isolated Ti anchored by oxygen atoms on reduced graphene oxide (rGO) (termed as Ti1/rGO), is successfully synthesized. The structure of Ti1/rGO is characterized by high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption fine structure spectroscopy, being determined to have a five coordinated local structure TiO5. When serving as non-Pt cathode material in dye-sensitized solar cells (DSCs), Ti1/rGO exhibits high electrocatalytic activity toward the tri-iodide reduction reaction. The power conversion efficiency of DSCs based on Ti1/rGO is comparable to that using conventional Pt cathode. The unique structure of TiO5 moieties and the crucial role of atomically dispersed Ti in Ti1/rGO are well understood by experiments and density functional theory calculations. This emerging material shows potential applications in energy conversion and storage devices.
Colloidal synthesis of wurtz-stannite Cu2CdGeS4 nanocrystals with high catalytic activity toward iodine redox couples in dye-sensitized solar cells
Huang, Shoushuang,Zai, Jiantao,Ma, Dui,He, Qingquan,Liu, Yuanyuan,Qiao, Qiquan,Qian, Xuefeng
, p. 10866 - 10869 (2016/09/09)
Wurtz-stannite Cu2CdGeS4 nanocrystals were synthesized via a facile hot-injection method at a low temperature. They exhibited low charge transfer resistance at the electrolyte-electrode interface and high electrocatalytic activity for the reduction of I3- in dye-sensitized solar cells (DSSCs). Moreover, this DSSC showed a power conversion efficiency of 7.67%, comparable to the Pt-based device (7.54%).
