基于带隙可调的MAPbI(3-x)Brx钙钛矿电池

采用一步溶液法制备了MAPbI_((3-x))Br_x钙钛矿太阳电池,研究了MABr掺杂含量变化对薄膜形貌及光电性能的影响。研究结果表明,在MAPbI_((3-x))Br_x体系中,随着MABr含量的增加,钙钛矿层晶粒尺寸明显增大;紫外-可见吸收光谱和稳态荧光测试表明峰位发生蓝移;构筑的MAPbI_((3-x))Br_x电池器件的开路电压V_(oc)=1.02 V,光电转换效率PCE为12.68%。     

AgI/h-MoO_3异质结的构筑及其模拟燃油光催化氧化脱硫活性

利用沉积法获得了异质结AgI/h-MoO_3光催化剂,通过X射线衍射(XRD)、扫描电子显微镜(SEM)、光电子能谱(EDS)、X射线光电子能谱(XPS)、紫外-可见漫反射吸收光谱(UV-Vis-DRS)、光致发光(PL)、电化学阻抗(EIS)等方法对其物相组成、形貌、光吸收特性、光电化学性能等进行了表征。以噻吩的正辛烷溶液模拟催化裂化(FCC)汽油为探针考察了AgI/h-MoO_3光催化氧化脱硫活性,结果表明,AgI/h-MoO_3-18异质结在催化剂浓度为1.5 g·L~(-1),可见光照射2 h后,光催化氧化脱硫活性达98%。利用XRD、XPS、UV-Vis-DRS揭示了AgI/h-MoO_3光照后生成少量的金属Ag,使其结构转变为Z型AgI/Ag/h-MoO_3,有利于光生电子(e~-)转移。利用活性物种捕获实验、循环实验研究了AgI/h-MoO_3光催化氧化脱硫机理及其稳定性,实验结果表明:AgI/h-MoO_3不仅具有较高的光催化氧化脱硫活性,而且还有良好的稳定性。     

球形α-Fe2O3纳米粉体的超声水解法合成与表征

Hematite (α-Fe₂O₃) nanopowder was synthesized from 0.1 mol·L^-1 FeCl₃ solution by sonochemical hydrolysis method, and characterized by X-ray diffraction (XRD), transmission electron micrograph (TEM), Fourier transform infrared (FTIR), Fourier transform Raman (FT-Raman) and X-ray photoelectron spectroscopy (XPS). The results showed that the spherical, well-dispersed α-Fe₂O₃ nanopowder was obtained with the average size of 20 nm. The possible mechanism for the formation of α-Fe₂O₃ nanoparticals was also discussed.     

靖边油田Y8Y9油井酸化技术研究

为进一步提高靖边油田Y8Y9油井酸化效果，降低成本，增加效益，针对储层特征的实际情况，通过土酸溶蚀试验，缓冲性能试验，从而优选出适合靖边油田Y8Y9油层的酸化用液配方；12%HCl 3%HF 2～3%甲醛 3%冰醋酸。     

4-啶-3-甲酸构筑的三维Cu(Ⅱ)配合物及理论计算

采用水热法合成了一种新型配合物 ［Cu2(4,3-pybz)4(H2O)］n (1) (4,3-pybz = 4-吡啶-3-苯甲酸), 通过X-射线单晶衍射测定了晶体结构, 并用元素分析、红外光谱、热分析等技术对其进行了表征. 配合物1属单斜晶系, 空间群C2/c;晶胞参数为:a=1.2004(3) nm,b=1.52305(4)nm, c=2.23362(6) nm, β=95.94°, Z=4,V=4.06173(18) nm3,Mr=937.90,Dc= 1.694 Mg·m-3,F(000)= 2     

吡啶配位的夹心型杂多阴离子{[Na(H2O)2]3[Ni(C5H5N)]3(AsW9O33)2}9-的结构及磁学性质

The pyridine coordinated sandwich-type heteropolytungstate Na7[Ni（H2O）6] { [Na（H2O）2]3[Ni（C5H5N）]3（AsW9O33）2}·28H2O was obtained by the reaction of Na2WO4·2H2O, NaAsO2 and pyridine with NiCl2·6H2O at pH =7.0 and characterized by elemental analysis, IR, UV-Vis,^1H NMR spectra and magnetic measurement. The structure of this heteropolytungstate was determined by X-ray diffraction analysis, which crystallized in triclinic system, space group P1 with a= 1.3153（9） nm, b= 1.7228（12） nm, c=2.6866（19） nm, a=74.130（11）°,β=78.032（12）°, γ = 73.179（12）° and Z= 2, R1 = 0.0604, wR2 = 0.0915 [I〉 2σ（I）]. Polyanion {[Na（H2O）2]3[Ni（C5H5N）]3（AsW9O33）2}^9- has approximately C3 symmetry, and three pyridine coordinated Ni（C5H5N）^2＋ and three Na（H2O）2^＋ are encapsulated between two AsW9O33^9- . Magnetic measurements show that central Ni3 unit in the polyanion exhibits ferromagnetic Ni-Ni exchange interactions （J=6.17 cm^-1）.     

基于三联苯-2,2′,4,4′-四羧酸的二维双层锌(Ⅱ)配位聚合物的水热合成、晶体结构及荧光性质(英文)

采用水热法合成了一个配合物[Zn2(tpta)0.5(H2tpta)(dpe)(H2O)2]n(1)(H4tpta=三联苯-2,2′,4,4′-四羧酸,dpe=1,2-二(4-吡啶基)乙烯),并用元素分析、红外光谱、X-射线单晶衍射、热重分析和荧光分析对其进行了表征。晶体结构分析表明:该配合物属于三斜晶系,空间群为P1,a=1.017 4(2)nm,b=1.034 1(2)nm,c=1.883 1(4)nm,α=96.147(4)°,β=96.866(4)°,γ=98.023(4)°,V=1.932 2(7)nm3,Z=2,Dc=1.640 g·cm-3,μ=1.320 mm-1,F(000)=974,R1=0.066 9,wR2=0.133 2(I2σ(I));具有环状双核锌(Ⅱ)连接的二维双层结构,双层之间又进一步通过O-H…O氢键组装成三维超分子结构。此外,该配合物具有较好的热稳定性和发光性能。     

全固态Z-型CdS/Au/Bi2MoO6异质结的构筑及其光催化性能

采用简单的化学还原沉积和二次水热的方法成功制备了CdS和Au共同修饰Z型CdS/Au/Bi2MoO6(CdS/Au/BMO)光催化剂。通过X射线粉末衍射(XRD)、X射线光电子能谱(XPS)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)等测试技术对其组成、形貌、光吸收特性和光电化学性能等进行系统表征。实验结果表明,CdS/Au/BMO-2复合材料在可见光照射下表现出最佳的降解效率,其降解RhB的速率常数约为BMO的8.8倍和CdS的20倍。Au NPs作为固态电子媒介,为光生电子的传输和转移提供了一个通道,同时Au NPs的表面等离子体共振(SPR)效应和CdS纳米粒子显著拓宽了催化体系对可见光的响应范围;通过对催化剂的组成、结构和光电性能表征,确定了CdS/Au/BMO的能带结构,进而探讨了CdS/Au/BMO活性增强机制。     

Novel Hydrogen-bonded Three-dimensional Supramolecular Architectures Containing 2D Honeycomb Networks or 2D Grids

Two new supramolecular complexes,[Cu(H_2dhbd)(3-pyOH)(H_2O)]_2·3-pyOH·2H_2O(1)and[Cu_2(dhbd)(dpa)_2-(H_2O)]·6H_2O(2)(H_4dhbd=2,3-dihydroxybutanedioic acid,3-pyOH=3-hydroxypyddine,dpa=2,2'-dipyridylamine),have been synthesized in aqueous solution and characterized by single-crystal X-ray diffraction,elemental analyses,UV-Vis and IR spectra,and TGA analysis.X-ray structural analysis revealed that,through four pairs of strong O…H—O hydrogen bonds,the cyclic dinuclear units in 1 together with four adjacent neighbors are connected into a 2Dhoneycomb network encapsulating free 3-pyOH ligands.Unexpectedly,the water-dimers are fixed in interlayers of2D honeycomb network and act as hydrogen-bond bridging to further extend these 2D networks into 3D hydro-gen-bonded framework.Complex 2 includes interesting 2D grids constructed from chiral dinuclear units throughstrong O…H—O and O…H—N hydrogen bonding,which are extended through other crystallization water mole-cules into three dimension with channels.Variable-temperature magnetic susceptibility measurements for bothcomplexes indicate the presence of weak antiferromagnetic exchange interactions between adjacent copper(Ⅱ)ions.     

基于三联苯-2，2，4，4'-四羧酸的二维双层锌(Ⅱ)配位聚合物的水热合成、晶体结构及荧光性质

采用水热法合成了一个配合物[Zn₂(tpta)_0.5(H₂tpta)(dpe)(H₂O)₂]_n(1)(H₄tpta=三联苯-2,2',4,4'-四羧酸,dpe=1,2-二(4-吡啶基)乙烯),并用元素分析、红外光谱、X-射线单晶衍射、热重分析和荧光分析对其进行了表征。晶体结构分析表明：该配合物属于三斜晶系,空间群为P1,a=1.0174(2)nm,b=1.0341(2)nm,c=1.8831(4)nm,α=96.147(4)°,β=96.866(4)°,γ=98.023(4)°,V=1.9322(7)nm³,Z=2,D_c=1.640g·cm^-3,μ=1.320mm^-1,F(000)=974,R₁=0.0669,wR₂=0.1332(I>2σ(I));具有环状双核锌(Ⅱ)连接的二维双层结构,双层之间又进一步通过O-H…O氢键组装成三维超分子结构。此外,该配合物具有较好的热稳定性和发光性能。