一维Bi2Fe4O9纳米棒阵列的无模板水热合成

以物质的量的比为1：1的Bi（NO₃）₃·5H₂O和Fe（NO₃）₃·9H₂O为反应原料,以NaOH为矿化剂,利用水热法在Ti基板上成功制备出一维Bi₂Fe₄O₉纳米棒阵列。对该纳米棒阵列分别进行XRD、FE-SEM、HR-TEM和UV-Vis测试,得到Bi₂Fe₄O₉纳米棒的直径为100nm,长度为3~4μm,并表现出良好的光吸收性能,禁带宽度约为1.9eV,对甲基紫溶液的光降解率达到86%,其活性明显高于市售P25（TiO₂）。该纳米棒阵列的生长方式完全遵循奥斯瓦尔德熟化（Ostwald ripening）单晶生长机理。     

基于半主动激光末制导的迫击炮弹

半主动激光制导技术在军事上有着广泛的应用。在分析半主动激光工作原理的基础上,着重对国外半主动激光末制导迫击炮弹进行了深入的分析,指出了研究的现状及存在的不足,对迫击炮弹的研究具有一定的指导意义。     

一维Bi_2Fe_4O_9纳米棒阵列的无模板水热合成

以物质的量的比为1∶1的Bi(NO3)3·5H2O和Fe(NO3)3·9H2O为反应原料,以NaOH为矿化剂,利用水热法在Ti基板上成功制备出一维Bi2Fe4O9纳米棒阵列。对该纳米棒阵列分别进行XRD、FE-SEM、HR-TEM和UV-Vis测试,得到Bi2Fe4O9纳米棒的直径为100 nm,长度为3~4μm,并表现出良好的光吸收性能,禁带宽度约为1.9 eV,对甲基紫溶液的光降解率达到86%,其活性明显高于市售P25(TiO2)。该纳米棒阵列的生长方式完全遵循奥斯瓦尔德熟化(Ostwald ripening)单晶生长机理。     

Carbazole Based Anionic MOF for Proton Conductivity

A non-interpenetrated anionic In-MOF(FJU-302)based on a linear H2 bpdc and an angled H2 cdc as dual-ligands was characterized by FT-IR,TGA and X-ray single-crystal/powder diffraction.FJU-302 crystallizes in the monoclinic system and I4₁/amd space group with a=27.1274(8),b=27.1274(8),c=29.788(3)?,V=21921(2)?³,Z=16,M_r=608.32,D_c=0.737 g/cm³,F(000)=4848,μ(Cu Kα)=3.659 mm^–1,R=0.0800 and wR=0.1911 for 5703 observed reflections(I>2s(I)),and R=0.1470 and w R=0.2342 for all data.In this work,a carbazole based anionic In-MOF(FJU-302)was designed and synthesized,and the proton conductivity from subzero temperature(–30℃)to 70℃ was measured without additional humidity.FJU-302 presents a max proton conductivity of 6.47×10^–4 S·cm^–1 at 70℃,and it can maintain 5.88×10^–7 S·cm^–1 at–30℃.This work reports a first carbazole based MOF for proton conductivity at subzero temperature conditions.