Synergistic Optimization of Buried Interface by Multifunctional Organic-Inorganic Complexes for Highly Efficient Planar Perovskite Solar Cells

For the further improvement of the power conversion efficiency(PCE)and stability of perovskite solar cells(PSCs),the buried interface between the perovskite and the electron transport layer is crucial.However,it is challenging to effectively optimize this interface as it is buried beneath the perovskite film.Herein,we have designed and synthesized a series of multifunctional organic-inorganic(OI)complexes as buried interfacial material to promote electron extraction,as well as the crystal growth of the perovskite.The OI complex with BF4−group not only eliminates oxygen vacancies on the SnO_(2) surface but also balances energy level alignment between SnO_(2) and perovskite,providing a favorable environment for charge carrier extraction.Moreover,OI complex with amine(−NH_(2))functional group can regulate the crystallization of the perovskite film via interaction with PbI2,resulting in highly crystallized perovskite film with large grains and low defect density.Consequently,with rational molecular design,the PSCs with optimal OI complex buried interface layer which contains both BF4−and−NH_(2) functional groups yield a champion device efficiency of 23.69%.More importantly,the resulting unencapsulated device performs excellent ambient stability,maintaining over 90%of its initial efficiency after 2000 h storage,and excellent light stability of 91.5%remaining PCE in the maximum power point tracking measurement(under continuous 100 mW cm−2 light illumination in N2 atmosphere)after 500 h.

A Novel Organic-Inorganic Complex: Synthesis and Crystal Structure of [Ca(DMSO)_5(H_2O)]_2SiMo_(12)O_(40)

A novel organic-inorganic complex [Ca(DMSO)5(H2O)]2SiMo12O40 was synthesized from CaCl2, DMSO and H4SiMo12O40nH2O in mixed solvent of acetonitrile and water. Its structure was characterized with elemental analysis, IR and X-ray diffraction analysis.

Synthesis and crystal structure of an organic-inorganic complex [Cu(DMF)_3(H_2O)_2]_2[SiMo_(12)O_(40)]·2H_2O

The synthesis and crystal smacture of an polyoxometalate-based organic-inorganic complex [Cu（DMF）3（H2O）212[SiMo12O40].2H2O （DMF = N, N-dimethyl formamide） is described in this article. It was characterized using elemental analysis, thermal analysis, infrared, ultraviolet, and electron spin resonance spectroscopic studies. The X-ray crystallography analysis showed that the copper centers are pentacoordinated to show the square pyramidal geometry, and the polyanion [SiMo12O40]4- which is semi-coordinated to the copper（I/） centers prevents the existence of a sixth ligand. In addition, the intracationic hydrogen interaction enhanced the stability of the copper coordination cation.

Synthesis and Crystal Structure of an Organic-inorganic Complex [Hg(DMSO)_2(H_2O)]_2 [GeW_(12)O_(40)]·DMSO·H_2O

An organic-inorganic mercury coordination compound [Hg（DMSO）2（H2O）]2 [GeW12O40]· DMSO·H2O （DMSO =dimethyl sulfoxide） has been synthesized and characterized by IR, UV spectra, elemental analysis, TG-DTA and X-ray single-crystal diffraction. Structural analysis revealed that in the title compound, the mercury is three-coordinated to show the distorted trigonal cone geometry, and depending on the electrostatic interaction to connect the polyanion [α-GeW12O40]^4-. TG-DTA study manifests the decomposition temperature of the polyanion framework in the title compound is 513.5℃, which is much higher than that of the anion framework. It means that the formation of the organic-inorganic mercury coordination compound made the polyanion [α-GeW12O40]^4- to he more stable.

Synthesis and Structure of a Novel Chain-like Inorganic-organic Hybrid Constructed from Isopolyanion and Oxalato-bridged Dinuclear Copper Complex

A novel inorganic-organic hybrid based on isopolyanion,{[Cu2（phen）2（μ-ox）][H2Mo8O26]}·4EtOH·Et2O（1） （phen=phenanthroline,ox=oxalate）,was synthesized under open-air mild reaction conditions,and characterized by elemental analysis,IR,ICP,TG and single crystal X-ray diffraction analysis.The crystal structure belongs to triclinic system with space group Pī and cell parameters：a=1.1075（5） nm,b=1.1608（5） nm,c=1.3333（5） nm,α=91.683（5）o,β=113.996（5）o,γ=112.170（5）o,V=1.4159（10） nm3,Mr=2017.44,Z=1,Dc=2.366 g/cm3 and F（000）=980.0.The structure of hybrid 1 is a 1D chain constructed of alternating octamolybdate isopolyanions [β-（Mo8O26）4-] and oxalato-bridged dinuclear copper complex cations [Cu2（phen）2（μ-ox）]2＋.Ultimately,a 3D supramolecular network was formed by hydrogen bond interactions among the adjacent chains.The result shows that hybrid 1 is the first example of inorganic-organic hybrid constructed from isopolyanion and oxalato-bridged dinuclear copper complex fragment （CCDC No.665101）.

Hydrothermal Synthesis and Structural Characterization of a Novel Organic-Inorganic Hybrid Compound {[Cu(2,2′-bpy)_2]_2-Mo_8O_(26)}

A novel organic-inorganic hybrid compound {[Cu(2,2'-bpy)_2]_2Mo_8O_(26)} hasbeen hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction.The compound crystallizes in the orthorhombic space group, Pna2_1, with a = 2.4164(5), b =1.8281(4), c = 1.1877(2) nm, V = 5.247(2) nm^3, Z = 4, and final R_1 = 0.0331, wR_2 = 0.0727. Thestructure consists of discrete {[Cu(2,2'-bpy)_2]_2Mo_8O_(26)} clusters, constructed from aβ-octamolybdate subunit [Mo_8O_(26)]^(4-) covalently bonded to two [Cu(2,2'-bpy)_2]^(2+)coordination complex cations via bridging oxo groups. In addition, the spectroscopic properties andthermal behavior of this compound have been investigated by spectroscopic techniques (UV-vis, IR,Raman and EPR spectra) and TG analysis.

Synthesis,Structure and Properties of a Novel Copper(Ⅱ)-2,2'- biimidazole Complex-supported Compound:[Cu(H_2biim)_2]{[Cu(H_2biim)_2 ]_2[H_(10)W_(12)O_(44)]}·8H_2O

A new copper（II）-2,2＇-biimidazole metal-organic POMs-supported compound [Cu（H2biim）2]{[Cu（H2biim）212[H10W12O44]}＇8H2O （H2biim = 2,2＇-biimidazole） has been success- fully synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and TG. The crystal adopts space group Pi with a = 11.800（2）, b = 13.437（3）, c = 13.685（3） A, V = 1922.5（7） A3, D,. = 3.507 g/cm3, C36H62Cu3N24W12O52, M,. = 4059.92, F（000） = 1837,μ = 18.796 mm-1, Z = 1, R = 0.0579 and wR = 0.1465 for 8734 observed reflections （I 〉 2σ（I））. X-ray crystallography analysis exhibits that the title compound consists of one [H10W12044]6- polyanion and three [Cu（H2biim）2] units. And significant π-π stacking interactions and intermolecular O-H-,.O or N-H.＇-O hydrogen-bonding interactions lead to a three-dimensional supramolecular framework. Thermal stability and magnetic property of the complex have also been investigated.

Synthesis, Characterization, and Properties of Supported Tungstozincate Bridged by Co(Ⅱ) Complex Fragment

[Co^11（phen）3]2[{（ZnW12O40）Co^11（phen）2（H2O）}2Co^11（trien）2（NaH2O）2]·3H2O was synthesized via hydrothermal technique and characterized with elemental analyses, IR spectroscopy, TGA-DTA, and variable temperature magnetic susceptibility. The compound crystallized in the monoclinic system with the space group P21/n, a=1.8210 nm, b=2.3592 nm, c=2.2932 nm, β=110.31°, V=9.239 nm^3, Z=2, R1=0.0827. The compound consists of two coordination cations, three lattice water molecules, and a macroanion [{（ZnW12O40）Co（phen）2（H2O）}2Co（C6H18N4）2·（NaH2O）2]^4- in which each supported Keggin anion [（ZnW12O40Co^11（phen）2（H2O）]^4- acts as a ligand to coordinate to central bridging Co^2＋ ion via a terminal oxygen atom. Hydrogen bonds are responsible for the construction of 3D architecture of the compound. The compound is paramagnetic with a weak antiferromagnetic interaction（0=-46.796 K）.

Crystal Structures and Photoluminescence of Two Zinc(Ⅱ) and Silver(Ⅰ) Complexes with 6,7-Dicyanodipyridoquinoxaline

Two d10 metal-organic complexes, [ZnBr2（DICNQ）2] （1） and [AgCN（DICNQ）]2（2）, were prepared from ZnBr2 and AgCN with 6,7-dicyanodipyridoquinoxaline （DICNQ） by solvothermal reactions, respectively, and characterized by single-crystal X-ray diffraction analyses, IR spectroscopy, and photoluminescent measurement. Compound 1 crystallizes in monoclinic, space group C2/c with a=8.436（2）, b=13.011（3）, c=27.565（6）,β=97.90（3） , V=2997.0（1）3 , Z=4, Mr=789.73, Dc=1.750 g/cm3 ,μ=3.533 mm-1 , F（000）=1552, S=1.007 and T=293（2） K. The final R=0.0739 and wR=0.1380 for 1561 observed reflections with I 〉 2σ（I）. Compound 2 crystallizes in monoclinic, space group P21/c with a=24.202（6）, b=7.1619（17）, c=18.339（5）,β=111.8380（10） , V=2950.6（1）3 , Z=4, Mr=832.32, Dc=1.874 g/cm 3 ,μ=1.382 mm-1 , F（000）=1632, S=1.002 and T=293（2） K. The final R=0.0389 and wR=0.1257 for 4812 observed reflections with I 〉 2σ（I）. Both compounds form packing structures by π…π stacking interactions and C-H…N or C-H…Br hydrogen-bonding interactions. Compounds 1 and 2 show similar photoluminescent spectra with emission maxima at ca. 430 nm in diluted acetonitrile solution （1×10-5 mol L-1 ） at room temperature.

PAC-P(AM-BA)杂化高分子絮凝剂制备及絮凝效能评价

针对油田化学驱污水难处理问题,采用水溶液自由基胶束聚合法,以聚合氯化铝(PAC)为无机组分,丙烯酰胺(AM)、丙烯酸丁酯(BA)为有机单体,合成一种新型无机-有机杂化高分子絮凝剂(PAC-P(AM-BA))。利用傅里叶变换红外光谱仪(FT-IR)、热重分析仪(TGA)、扫描电子显微镜(SEM)和比表面积分析仪(BET)对絮凝剂进行表征。结果表明,BA以化学键连接在聚丙烯酰胺(PAM)长链中,无机组分与有机组分之间以离子键连接。PAC-P(AM-BA)热分解温度为233.93℃,比表面积为30.351m^(2)·g^(-1)。絮凝实验结果表明,PAC-P(AM-BA)最佳投加量为20 mg·L^(-1),沉降时间为10 h,其絮体分形维数为1.733。在絮凝效能对比实验中,PAC-P(AM-BA)的平均除油率为90.3%,较阳离子聚丙烯酰胺(CPAM)和复配型絮凝剂(PAC+PAM)分别高出16.4%和29.0%。

饮用水处理过程中天然有机物引起的超滤膜污染机制研究进展

天然有机物(NOM)存在于地表水、地下水和土壤水中。超滤(UF)膜技术具有运行压力小、设备集成化程度高和占地面积小等优势,但NOM造成的复合污染使超滤膜在水处理的应用管理变得复杂。本文在概述NOM的来源、组成和化学性质的基础上,通过分析不同结构特征的NOM间的相互作用机制,阐述了不同结构特征的NOM的复合膜污染。从离子与NOM络合的影响因素、络合对NOM理化性质的影响等,分析了离子与NOM的复合膜污染。最后,分析了目前研究面临的挑战,并对未来的发展方向进行了展望。

粪/菌秸秆条带混施对黑土有机无机复合体组成及有机碳分布特征的影响

为探究玉米秸秆混施畜禽粪/生物菌剂条带还田条件下黑土有机无机复合体组成及有机碳分布变化特征,本研究于2020年4月在吉林省榆树市黑土区按等碳原则进行1次条带施肥,第2年条带变苗带不施肥,秸秆原位粉碎后,将下茬作物播种行上的秸秆向两侧休闲带堆放形成秸秆覆盖条带,进行连续两年的秸秆原位还田试验。本试验共设4个处理,即条带秸秆覆盖+鸡粪(SO)、条带秸秆覆盖+牛粪(SN)、条带秸秆覆盖+生物菌剂(SJ)和条带秸秆覆盖(SCK)。采用胶散分组法提取有机无机复合体,分为水质分散组(G0)、钠质分散组(G1)和超声分散组(G2)。结果表明:添加畜禽粪及菌剂的处理土壤各组分复合体及其碳含量相比SCK有所增加,SJ处理增加最多,2022年SJ处理G0复合体含量和其碳含量分别增加38 g∙kg^(−1)和1.74 g∙kg^(−1)。各畜禽粪及菌剂处理不同组分复合体含量及其有机碳含量存在一定差异。2021年,SJ和SO处理G1复合体含量相比SN处理显著增加33.46~37.66 g∙kg^(−1),有机碳含量增加0.69~0.78 g∙kg^(−1);SJ、SO处理G2复合体有机碳含量相比SN处理也显著增加。2022年,SJ、SO处理G0复合体有机碳含量与SN处理相比增加显著,其最高增加量为1.02 g∙kg^(−1);SJ处理G1复合体含量相比SO、SN处理分别显著增加41.25 g∙kg^(−1)、49.92 g∙kg^(−1);SJ处理G2复合体有机碳含量最高。两年间,SJ处理G0复合体含量相比SO处理增加23.35~23.74 g∙kg^(−1)。扫描电镜和X射线衍射物相分析结果表明,粪/菌秸秆混施有效保持了复合体表面结构,提高了有机碳转化率。综上,玉米秸秆混施生物菌剂处理更有利于土壤肥力的提升和土壤碳固存的增强,可选为最优还田模式。

铜尾矿浆絮凝沉降及对固化影响研究

为研究不同絮凝剂单掺及复配对铜尾矿浆的絮凝沉降效果,选用传统无机絮凝剂硫酸铝、无机高分子絮凝剂聚合氯化铝(PAC)及有机絮凝剂阴离子聚丙烯酰胺(APAM)进行单掺及2种无机絮凝剂分别与APAM复配絮凝沉降试验,并将絮凝后的铜尾矿浆进行水泥固化试验。结果表明:在最佳投加量时,3种絮凝剂絮凝效果为APAM>PAC>硫酸铝。在复配试验中,复配组合的沉降效果均优于单独使用。絮凝前后的铜尾矿固化体抗压强度各龄期最低提高了2.4倍,其中,单独使用絮凝剂硫酸铝后的铜尾矿固化体各龄期抗压强度最高,APAM最低;而在复配絮凝剂中,硫酸铝与APAM絮凝后的铜尾矿固化体抗压强度较PAC与APAM絮凝后的高。

基于“芳酸结构形貌调控的Zn-MOFs制备表征”构建无机化学综合实验

金属有机框架化合物(MOFs)是有机配体与金属离子或金属簇通过配位键组装而成的具有分子内孔隙结构的有机-无机杂化材料,具有比表面积大、孔隙率高、孔径可调、稳定性好等特征,在催化、能源、药物输送及传感等领域广泛应用。MOFs的物性特征与其形貌及组成密切相关,故形貌调控至关重要。本文以对苯二甲酸、均苯三甲酸、2,6-萘二羧酸为有机配体,以锌离子为金属中心,采用室温沉淀法制备Zn-MOFs纳米材料体系,基于有机配体调控Zn-MOFs形貌。采用扫描电子显微镜表征其形貌,X-射线衍射光谱表征其晶体结构,红外光谱表征化学组成,紫外可见吸收光谱表征其光谱特性,并修饰至玻碳电极表面,构建光电化学界面,考察三种Zn-MOFs纳米材料的光电转换性能。通过该综合实验,有助于延伸无机化学金属配合物之理论基础,拓展光电化学及化学修饰电极知识领域,有利于强化科研创新意识、提升材料制备及表征相关实验技能、建立数据处理与结果分析的思维模式,有助于培养学生立志创新、勇于探索之精神。

无机/有机复合絮凝剂对印染废水脱色的研究

研究了几种有机、无机絮凝剂和两种无机 /有机复合絮凝剂对活性艳红 K- 2 BP模拟废水以及实际废水的处理效果。结果表明 ,无机 /有机复合絮凝剂对活性染料具有很好的处理效果 ,且节省絮凝剂用量 ,当投加量为 75 0 mg/L时 ,脱色率达 99% ,沉清液基本无色 ,具有脱色率高 ,沉淀污泥少 ,絮凝颗粒大 。

无机-有机高分子复合絮凝剂研究与应用

综述了两大类无机有机高分子复合絮凝剂———无机合成有机高分子复合絮凝剂和无机天然高分子复合絮凝剂的发展及其在废水处理中的应用 ,同时对它们的作用机理进行了概括和归纳 。

复合高分子絮凝剂的制备及研究进展

复合高分子絮凝剂近年来发展迅速并成为研究的热点。对无机复合高分子絮凝剂、有机复合高分子絮凝剂和无机-有机复合高分子絮凝剂的国内外研究现状进行了概述,分析了复合高分子絮凝剂处理废水的优势及其发展面临的问题,指出无机-天然有机复合高分子絮凝剂将是未来研究的重点。

有机无机复混肥对柑橘产量和品质的影响

采用田间小区试验研究了有机无机复混肥对柑橘产量和品质的影响。结果表明,施有机无机复混肥能增加柑橘产量,改善果实品质,提高经济效益。柑橘产量以施有机无机复混肥处理最高,施有机无机复混肥能增加柑橘果实的Vc含量、可溶性总糖含量、糖酸比和可溶性固形物百分比,降低可滴定酸含量。

坡缕石/聚丙烯酰胺无机-有机杂化絮凝剂的合成、表征与应用

将酸活化坡缕石 ( PGS)与氯化乙醇胺 ( EACl)所得氯化乙醇胺改性坡缕石 ( PGS-EACl)与高价铈盐( Ce4 +)组成氧化还原非均相引发体系 ,引发丙烯酰胺单体聚合得到了坡缕石 /聚丙烯酰胺 ( PGS/ PAM)无机 -有机杂化物 .用 1 H NMR、FTIR、粘度法和电导法对杂化物进行了结构表征 ,表明杂化物中存在PGS NH3R离子键合作用 .考察了 PGS-EACl用量、聚合反应时间和单体浓度对杂化物特性粘数的影响 .由 PGS/ PAM杂化絮凝剂分别处理高岭土和氧化铁红两种配制废水 ,发现杂化絮凝剂的絮凝效果明显优于纯

氢氧化铝-聚丙烯酰胺杂化复合絮凝剂的合成与表征

用氧化-还原引发体系((NH4)2S2O8-NaHSO3)合成了氢氧化铝-聚丙烯酰胺杂化复合絮凝剂。电导和热失重研究的结果表明,杂化物聚丙烯酰胺链的端基(-SO2-4)与带正电荷的氢氧化铝胶体粒子以离子键性质键合。实验考察了反应温度,引发剂用量,氢氧化铝粒径和用量等因素对杂化聚丙烯酰胺合成的影响,发现氢氧化铝的存在可使杂化聚合物分子量显著提高。透射电镜结果显示原位聚合过程能使团聚的氢氧化铝胶体微粒纳米化。