The structure ofV2O5-P2O5-Sb2O3-Bi2O3glass and its state of crystallization were studied by means of infrared spectroscopy and X-ray diffraction analysis. The results indicate that, in this glass, V and P exist mainly...The structure ofV2O5-P2O5-Sb2O3-Bi2O3glass and its state of crystallization were studied by means of infrared spectroscopy and X-ray diffraction analysis. The results indicate that, in this glass, V and P exist mainly in the form of a single-stranded linear （VO3）n and an isolated （PO4） tetrahedral with no double bond. Partial V and P are connected through O, forming an amorphous structure of layered vana- dium phosphate. Trivalent Sb3＋ and Bi3＋ open the V=O bond and appear in interlayers, so a weak three-dimensional structure is connected successfully. Along with the substitution of Sb203 for partial V205 or that of P205 for partial V205, the network structure of the glass is rein- forced, and the crystallization is reduced.展开更多
In this paper,a photoelectrocatalytic(PEC)recovery of toxic H_(2)S into H_(2)and S system was proposed using a novel bismuth oxyiodide(BiOI)/tungsten trioxide(WO_(3))nano-flake arrays(NFA)photoanode.The BiOI/WO_(3)NFA...In this paper,a photoelectrocatalytic(PEC)recovery of toxic H_(2)S into H_(2)and S system was proposed using a novel bismuth oxyiodide(BiOI)/tungsten trioxide(WO_(3))nano-flake arrays(NFA)photoanode.The BiOI/WO_(3)NFA with a vertically aligned nanostructure were uniformly prepared on the conductive substrate via transformation of tungstate following an impregnating hydroxylation of BiI3.Compared to pure WO_(3)NFA,the BiOI/WO_(3)NFA promotes a significant increase of photocurrent by 200%.Owing to the excellent stability and photoactivity of the BiOI/WO_(3)NFA photoanode and I-/I-3 catalytic system,the PEC system toward splitting of H_(2)S totally converted S_(2)-into S without any polysulfide(Sn-x)under solar-light irradiation.Moreover,H_(2)was simultaneously generated at a rate of about 0.867 mL/(h·cm).The proposed PEC H_(2)S splitting system provides an efficient and sustainable route to recover H_(2)and S.展开更多
文摘The structure ofV2O5-P2O5-Sb2O3-Bi2O3glass and its state of crystallization were studied by means of infrared spectroscopy and X-ray diffraction analysis. The results indicate that, in this glass, V and P exist mainly in the form of a single-stranded linear （VO3）n and an isolated （PO4） tetrahedral with no double bond. Partial V and P are connected through O, forming an amorphous structure of layered vana- dium phosphate. Trivalent Sb3＋ and Bi3＋ open the V=O bond and appear in interlayers, so a weak three-dimensional structure is connected successfully. Along with the substitution of Sb203 for partial V205 or that of P205 for partial V205, the network structure of the glass is rein- forced, and the crystallization is reduced.
基金This work was supported by the National Key Research and Development Program of China(Nos.2018YFE0122300 and 2018YFB1502001)Shanghai International Science and Technology Cooperation Fund Project(No.18520744900)and the SJTU-AMED.
文摘In this paper,a photoelectrocatalytic(PEC)recovery of toxic H_(2)S into H_(2)and S system was proposed using a novel bismuth oxyiodide(BiOI)/tungsten trioxide(WO_(3))nano-flake arrays(NFA)photoanode.The BiOI/WO_(3)NFA with a vertically aligned nanostructure were uniformly prepared on the conductive substrate via transformation of tungstate following an impregnating hydroxylation of BiI3.Compared to pure WO_(3)NFA,the BiOI/WO_(3)NFA promotes a significant increase of photocurrent by 200%.Owing to the excellent stability and photoactivity of the BiOI/WO_(3)NFA photoanode and I-/I-3 catalytic system,the PEC system toward splitting of H_(2)S totally converted S_(2)-into S without any polysulfide(Sn-x)under solar-light irradiation.Moreover,H_(2)was simultaneously generated at a rate of about 0.867 mL/(h·cm).The proposed PEC H_(2)S splitting system provides an efficient and sustainable route to recover H_(2)and S.
