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11.
在水热条件下,制备了2个基于多金属氧酸盐(POM)的Cu~Ⅱ和Cu~Ⅰ新型杂化配合物材料,即[Cu_2(4-NH_2-trz)4(Mo_8O_(26))(H_2O)_4]·5H_2O(1)和[Cu_4(4-NH_2-trz)4Mo_8O_(26)](2)(4-NH_2-trz=4-氨基-1,2,4-三唑)。通过单晶X射线衍射、傅里叶变换红外光谱和粉末X射线衍射分析确定了它们的结构。在配合物1中,4-氨基-1,2,4-三唑双齿配体连接2个相邻的CuⅡ中心形成双核结构单元,这些双核结构单元进一步通过Mo_8O_(26)~(4-)连接形成一维(1D)的杂化配位结构。在配合物2中,4-氨基-1,2,4-三唑双齿配体连接相邻CuⅠ中心构筑了独特的[Cu4(4-NH2-trz)4]n一维螺旋链,这些左手和右手的一维螺旋链再通过(β-Mo_8O_(26))~(4-)连接形成2D杂化骨架。光催化实验研究表明,样品1和样品2对于不同有机染料(亚甲基蓝(MB)、罗丹明B(Rh B)和甲基橙(MO))具有很好的光催化降解能力。 相似文献
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沸石-咪唑框架结构(ZIFs)是一种新型多孔材料,具有表面积大、孔隙度高、孔隙大小可调节和通道规则等独特的优点。本文通过硫化涂覆在导电玻璃上的ZIF-67薄膜,制备了多孔碳和硫化钴复合材料,研究了其对I-/I-3氧化还原对的催化性能,以替代铂作为方酸染料敏化太阳能电池的对电极。通过X射线衍射、扫描电镜和等温吸附的测量,分析了硫化ZIF-67得到的对电极多孔膜的结构和形态特征,并通过Tafel曲线和电化学阻抗谱图对其催化性能进行评价。结果表明,硫化60min的ZIF-67对电极催化性能与Pt对电极相当,方酸敏化太阳能电池的光电转换效率分别是4.03%和4.10%。 相似文献
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We have investigated the structure evolution of the124-134Xe isotopic chain in the framework of the proton-neutron interacting model IBM2. The positive parity spectra of the ground state, quasi-β and quasi-γ bands are reproduced well. The staggering in124-130Xe are almost completely removed and the γ band agree well with the experiment data, even for the high-spin quasi-γ states. The key quantities of the collective structure evolution, including level energies, the B(E2) transition branching ratios, and the M1 excitations to 1+1mixer-symmetry states are analyzed by comparing with the experimental data. The parameters for representation of the Oπν(6) and SU πν(3) features in isotopes are examined. Both experimental data and theoretical results show that the shape phase transition of124 134Xe isotopic chain is from the SU πν(3)(triaxial rotation) to the Uπν(5)(vibration motion) with a considerable constituent of the Oπν(6) symmetry(γ-unstable rotation), where the shape phase transition rapidly takes place between the neutron number N = 76 and N = 78. 相似文献
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Using a new ligand 1,6-bis(1,2,4-triazole-1-yl)hexane (L), one-dimensional coordination polymer [Cu2(L)(CH3CO2)4]n has been synthesized and characterized by elemental analysis, FTIR spectra and X-ray single crystal structural analysis. The title complex crystallizes in triclinic system with space group P1, a=0.722 5(7) nm, b=0.808 0(8) nm, c=1.173 1(11) nm, α=72.294(11)°, β=88.049(11)°, γ=66.294(11)°, V=0.594 2(10) nm3, Z=1, R1=0.037 0, wR2=0.098 3. The fundamental unit comprises two copper atoms (Cu(1), Cu(1A)), four μ2-bridged CH3CO2- and one ligand molecule. Cu(1) and Cu(1A) are both five-coordinated by four oxygen atoms from four μ2-CH3CO2- and one nitrogen atom from bridging ligand, forming a distorted square-pyramidal coordination configuration. Cu(1) and Cu(1A) are linked via four μ2-bridged CH3CO2- anions to form a paddle-wheel structural unit, which furthermore self-assemble into 1D chain via bridging ligands. CCDC: 603429. 相似文献
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The characteristics of the lowest mixed-symmetry states 2ms+ and 1ms+ for 132Xe, 134Ba and 136Ce in the even-even N=78 isotones are investigated within the framework of the IBM2 model. The lowest mixed-symmetry state 2ms+ levels for both a single isolated state in 132Xe and 136Ce and a fragmented state in 134Ba are reproduced by the predictions. The agreement between the IBM2 calculation and the experimental values is good for the B(E2) and B(M1) transition probabilities both quantitatively and qualitatively. The predicted summed B(M1) strength follows the experimental data, remaining nearly constant as a function of proton number along the chain of the N=78 isotones. 相似文献
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基于合作博弈的预付条件下应急物资库存策略 总被引:1,自引:0,他引:1
应急物资储备是应急管理的主要工作之一.以往政府自己组织物资储备,不仅耗费大量人力、物力,且由于应急物资具有有效期等缘故,报废损失较大.本文考虑政府与供应商合作进行应急物资的实物储备,讨论在政府提前支付部分货款、供应商储备应急物资的库存策略,并从合作博弈的角度,确立了联盟的合作期限与政府提前支付货款比例,实现了在减少政府支出的前提下,动态存储定量应急物资,大幅度延长有效期的目标.最后使用算例验证了该策略的有效性. 相似文献
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(1,2-(1H-1,2,4-三唑))乙烷的一维双链Cu(Ⅱ)配合物合成与表征 总被引:1,自引:0,他引:1
利用高度柔性的双三唑配体(1,2-(1H-1,2,4-三唑))乙烷(L)和铜盐反应合成了1个新的具有一维双链结构的铜(Ⅱ)配合物{[Cu(cis-L)2Br]Br·2H2O}n(1)。单晶结构表明:配合物1的晶体属于三斜晶系,P1 空间群。在配合物1中双三唑配体采用反式构型,桥联相邻的中心铜离子形成一维双链结构,晶格中游离的Br原子同配位水分子形成了四元环状的Br…O超分子环。测定了配合物1在2~300 K的变温磁化率,结果表明相邻铜离子间存在弱的反铁磁相互作用。 相似文献