以正硅酸乙酯和分子量为432的齐聚体甲氧基聚氧亚甲基蜜胺为原料,乙醇为溶剂,通过溶胶-凝胶法,在二氧化碳超临界条件下制备出了一种新型SiO2/MF气凝胶,由于二组分间的协同效应,其凝胶时间(13h)较传统的MF气凝胶有较大的缩短,且其成型性优异.采用FESEM、BET、FT-IR、TGA对样品进行了表征,其比较面积高达746 m2/g,耐热性能较传统MF气凝胶有所提升,且其孔结构分布均匀,总孔体积
Alumina aerogels were prepared by an acid-base two step sol-gel synthetic route using aluminum tri-sec butoxide as precursor and nitric acid/ammonia as acid/base catalysts, followed by drying with sup
Hydrogen detection has fundamental significance.Optical type sensor has a favorable prospect of development because of its Security and Sensitivity.In our works, Sol-Gel method combined with dip-coati
In this report we demonstrate the synthesis of homogeneous metal-silicon mixed-oxide composite aerogels via a propylene oxide pre-reaction method, in which different colloidal particles together cross
Nickel oxide (NiO) and reduced graphene oxide (RGO)/NiO composite were synthesized by the hydrothermal method followed by calcination in air.The reduction of graphene oxide (GO) happened in a one step
Nanoribbon-like manganese oxide (MnO(OH))/carbon composites were synthesized through hydrothermal methods at 150 ℃ for 6 h.The MnO(OH) is in diameters of 4-8 nm and lengths up to several micrometers.T
TiO2-C composite films are prepared by a sol-gel process.A soluble organic compound,salicylic acid, coupled with a quasi-crystallized benzene ring structure is served as carbon sources,resulting in a
近年来，类石墨状氮化碳(g-C3N4)作为一种新型的可见光催化材料受到了广泛关注，但其较低的比表面积和量子效率制约了其进一步发展[1-3]。本文采用超声工艺与水热制备方法相结合，在无模板剂条件下制备出多孔g-C3N4材料，通过X射线衍射、傅里叶变换红外光、扫描电镜、紫外-可见漫反射光谱等表征手段，系统研究了超声时间、水热条件等对其晶体结构、功能基团、形貌以及光吸收性能的影响，并考察了多孔g-C3N
类石墨氮化碳(g-C3N4)是当前光催化材料研究的热点之一[1-4].本文采用缩聚法合成了类石墨氮化碳(g-C3N4),利用球磨工艺对g-C3N4进行了初步细化,并在水热条件下制备出多孔g-C3N4.以多孔g-C3N4为基底,在其表面生长BiOBr,成功合成出可见光响应的g-C3N4/BiOBr复合光催化材料.通过X射线衍射(XRD)、扫描电子显微镜(SEM)、傅里叶红外光谱(FT-IR)、紫外-
Poly (lactic acid) (PLA) melt-blown webs were melt-spun by melt-blown processing in our the research.The effect of die-to-collector distance (DCD) on the structure and properties PLA MB webs was repor