CAJ | 학술논문

用固相合成法合成出LiNbWO6，并用离子交换法制备出HNbWO6;通过PrNH2层间膨胀、Pt(NH3)2+4层间插入和紫外光分解等反应，合成出一种新的层状光催化纳米复合材料HNbWO6/Pt，并比较了不同合成方法对样品性能的影响.X射线衍射、漫反射、ICP和比表面积测定等的表征结果表明:该样品的层间高度为0.3～0.5nm，禁带能隙为2.25～3.10eV.用波长大于290nm的450W汞灯照射5h，1g样品可催化分解甲醇溶液(10%)产生氢气约40ml，表明所研制的层状纳米复合材料具有较高的光催化活性.
용고상합성법합성출LiNbWO6，병용리자교환법제비출HNbWO6;통과PrNH2층간팽창、Pt(NH3)2+4층간삽입화자외광분해등반응，합성출일충신적층상광최화납미복합재료HNbWO6/Pt，병비교료불동합성방법대양품성능적영향.X사선연사、만반사、ICP화비표면적측정등적표정결과표명:해양품적층간고도위0.3～0.5nm，금대능극위2.25～3.10eV.용파장대우290nm적450W홍등조사5h，1g양품가최화분해갑순용액(10%)산생경기약40ml，표명소연제적층상납미복합재료구유교고적광최화활성.
HNbWO6 was prepared by calcining stoichiometric mixture ofLi2CO3, WO3 and Nb2O5 followed by ion excha nge reaction with HNO3. HNbWO6/Pt layered nanocomposite photocatalyst was synthesized by successive reaction of HNbWO6 with n-PrNH2 and [Pt(NH3)4]Cl2 under UV light irradiation. The influence of different prepara tion methods on property of HNbWO6/Pt was compared. The results of XRD, DRS(di ffuse reflectance spectrum), ICP(inductivity coupled plasma) and specific surface area measuremtents for the samples indicated that, for HN bWO6/Pt, the gallery height was 0.3～0.5 nm, the band gap energy was 2.25～3.10eV. Under irradiation with λ＞290 nm from a Hg lamp of 450 W for 5 h, about 40 ml of hydrogen was produced from 1 250 ml of methanol solution(10%) containing 1g of dispersed HNbWO6/Pt.