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SHAOFANG SUN,WEISHENG GUAN,XIAN ZHANG,ZHONGJIE ZHANG,YAN YAN 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.2
The removal of CIP from the environment has become a mandatory issue. In our paper, we haverealized the visible-light-driven degradation of CIP on the BiVO 4 – Bi 2 WO 6 nano-heterojunctionphotocatalysts. The synthesized photocatalysts were characterized by X-ray difraction (XRD),¯eld emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM),high-resolution transmission electron microscopy (HRTEM), ultraviolet-visible (UV-Vis) ab-sorption spectra and photoluminescence (PL) spectra. Compared with the single-phase BiVO 4and Bi 2 WO 6 counterparts, BiVO 4 – Bi 2 WO 6 nano-heterojunction photocatalysts show enhancedphotocatalytic degradation activities in visible-light-driven CIP degradation. Particularly, whenRðBi 2 WO 6 =BiVO 4 Þ ¼ 10 wt:% , the products exhibit the highest CIP degradation ratio in 60 min of76.8% under visible light illumination. The tentative mechanism of the interface charge transfer(IFCT) efect in the BiVO 4 – Bi 2 WO 6 heterojunction structure is also discussed by using the bandposition calculation.
Minjia Meng,Yonghai Feng,Weisheng Guan,Yan Liu,Yanfang Xi,Yongsheng Yan 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
Highly effective molecularly imprinted nano-polymer on wollastonite (nano-WMIP) was prepared byimprinting technique using oil-in-water emulsion polymerization in the presence of salicylic acid (SA) astemplate. The adsorption behavior of nano-WMIP including adsorption kinetic, isotherms, selectiveadsorption, recognition, and effects of initial pH, ionic strength, initial concentration, adsorptiontemperature, and amount of adsorbents were investigated in detail. Moreover, the selective recognitionof nano-WMIP was further investigated by HPLC toward analogs of SA. The relative selectivitycoefficients for p-HB, MS, and MP were 113.4, 8.049, and 6.239, respectively, showing that much higherselectivity of SA on nano-WMIP was obtained than that of wollastonite-based non-imprinted polymer(nano-WNIP).
Influence of different silica gelling agents on the performance of aqueous gel electrolytes
Changyu Lu,Tuan K.A. Hoang,The Nam Long Doan,The Nam Long Doan,Matthew Acton,WEISHENG GUAN,P. Chen 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.42 No.-
In this study, gel electrolytes are prepared from silica gelling agents and aqueous electrolyte forapplication in the rechargeable hybrid aqueous battery for the first time. The required quantities of silicamaterials are in the range of 4–15 wt.%. The gelling time is in the magnitude of minutes and the ionicconductivities of gel electrolytes are in the range of 50.6–60.6 mS cm 1. These batteries using these gelelectrolytes exhibit higher rate capability, slower self-discharge (ca.15% after 24 h), and up to 10–12%higher cyclability compared with the performance of the batteries using the conventional liquidelectrolyte.