摘要：Inorganic-organic hybrid materials are promising for application in the field of photocatalysis because of their excellent ***,their syntheses,mechanisms,and applications are reviewed in this ***,we introduce the role of inorganic-organic photocatalysts,their advantages and disadvantages,and their design ***,we present the top-down and bottom-up synthesis methods of the hybrid *** interaction between inorganic and organic components in hybrid materials is discussed,followed by how to improve inorganic-organic ***,the applications of hybrid materials in the field of photocatalysis,such as realizing hydrogen evolution,organic pollutant degradation,heavy metals and CO_(2) reduction,sterilization,and nitrogen fixation,are ***,the application prospects and development directions of inorganic-organic hybrid materials are explored and the unsolved problems are described.

摘要：为提高离心泵在设计工况下的运行效率和扬程,提出一种基于高维混合模型的离心泵叶轮优化设计方法.选取一台比转数为157的单级离心泵作为研究对象,通过CFturbo软件对优化变量进行参数化,然后结合数值模拟获得高维混合模型的训练集.在此基础上采用获取的训练集通过MATLAB机器学习得出效率、扬程与优化参数之间关于支持向量回归的高维模型,并采用遗传算法寻优.在设计工况下,所拟合的高维混合模型预测的效率和扬程值比原模型分别高1.5%和3.2 m,数值模拟验证优化方案的效率和扬程分别比原模型高0.9%和2.1 m.算例研究表明,将高维混合模型应用于离心泵叶轮的优化设计中可以实现快速寻优并提高离心泵水力性能.

摘要：Constructing step-scheme(S-scheme)heterojunctions can considerably facilitate separation and transfer of photocarriers,as well as promote strong redox *** interface resistance of heterojunctions immediately affects photocarrier separation and determines the photocatalytic ***,we constructed a novel Bi OBr/Ni_(2)P/g-C_(3)N_(4) heterojunction using Ni_(2)P as a novel electron bridge to reduce the interfacial resistance of photocarriers between Bi OBr and *** as-prepared 10% BiOBr/Ni2P/g-C_(3)N_(4) sample exhibited outstanding visible-light photocatalytic performance for methyl orange and rhodamine B removal,with degradation efficiencies of 91.4% and 98.9%,*** excellent photocatalytic activity of Bi OBr/Ni_(2)P/g-C_(3)N_(4) was mainly attributed to the synergistic effects of the Ni2P cocatalyst and S-scheme heterojunction,which not only reduced the interface resistance but also retained the strong redox potential of the *** addition,the formation of the S-scheme system was supported by active oxygen species investigation,current-voltage curves,and density functional theory *** work provides a guideline for the design of highly efficient S-scheme photocatalysts with transition metal phosphates as electron bridges to improve photocarriers separation.

摘要：采用追踪设计,对四川省719名小学生进行间隔半年的两次调查,旨在考察小学生欺负行为的同伴选择效应和同伴影响效应以及受欢迎程度和感知欺负行为接受度在其中的作用。结果表明:(1)同伴间欺负行为的同质性来源于同伴影响而非同伴选择;(2)在同伴选择过程中,个体受欢迎程度的调节作用不显著;(3)在同伴影响过程中,个体受欢迎程度的调节作用边缘显著,受欢迎程度高的个体的欺负行为更容易受到同伴的影响;(4)在同伴影响过程中,感知欺负行为接受度起中介作用。研究结果强调了同伴影响在小学生欺负行为中的重要作用,以及受欢迎程度和感知欺负行为接受度在同伴影响过程中的作用机制,对小学生欺负行为的干预具有一定的指导意义。

摘要：装配式支吊架在工程中已大范围投入使用,却鲜有关于其抗震性能的研究。为研究装配式支吊架的破坏机理、抗震性能及其影响因素,开展了两类门型支吊架的低周往复荷载试验,分析抗震斜撑、抗震连接件以及节点连接形式等对其抗震性能的影响。结果表明:无斜撑试件易在直角连接件或槽钢底座连接处失效,带斜撑试件易在管箍连接处失效;节点依靠咬合作用进行连接的试件抗震性能较差,采用螺栓对穿连接的试件抗震性能较好;抗震斜撑能显著提高门型支吊架的抗震性能,带斜撑试件的弹性刚度、极限承载力、屈服承载力、强度退化系数、刚度退化情况及耗能能力均优于无斜撑试件;节点连接形式是影响无斜撑试件抗震性能的主要因素,抗震连接件性能是影响带斜撑试件抗震性能的主要因素。研究成果可为支吊架产品的标准制定、设计施工、质量检验及工程应用提供参考依据。

摘要：某食醋酿造企业废水处理项目设计规模为200 m^(3)/d,废水特点是高COD、高TN、高TP,水质水量波动大。根据现场调研和小试,确定处理工艺流程为格栅集水井-调节池-气浮系统-调理池-IC反应器-两级AO生化池-MBR膜池-高效沉淀池-硫自养反硝化滤池-活性炭吸附罐-脱氮树脂罐-消毒接触池。运行结果表明,在设计工况下,该工艺组合对COD、TN和TP去除效果稳定,且抗冲击负荷能力强。经过该组合工艺处理后出水平均值COD<27.2 mg/L、TN<1.4 mg/L、TP<0.3 mg/L,出水水质满足《地表水环境质量标准》(GB 3838-2002)中的Ⅳ类标准。系统运行成本约为8.82元/m3。

摘要：单一结构、功能、花色的面料已经无法满足消费者追求个性、展现自我的需要,为此运用各种手段进行二次再造,丰富面料的视觉、触觉、立体美感,从而提升差异化、附加值和时尚度。根据多年的设计和工作实践对面料进行二次再造设计,运用流行趋势、时尚、色彩等元素进行论述,通过再造设计产生全新的格调、较优的视觉效果,赋予面料独特的功能并使其焕发出新的精神文化内涵。

摘要：利用光催化剂将太阳能转化为化学能,以应对当今社会所面临的环境污染和能源挑战,是一种极具发展潜力的策略.因此,研发高效光催化剂成为当务之急.在众多光催化剂中,金属硫化物受到广泛关注.其中,CdS因其出色的产氢性能而被视为一种具有前景的光催化剂,并备受关注.然而,CdS易发生光腐蚀,导致S2‒阴离子容易被产生的空穴氧化,从而影响了其光化学稳定性,限制了其应用.为解决上述问题,本课题组尝试用(C_(3)N_(3)S_(3))_(3)‒代替S2‒合成了不易受光腐蚀且相对稳定的聚合物Cd_(3)(C_(3)N_(3)S_(3))_(2)(CdTMT),CdTMT是一种对可见光有良好响应的大分子配位聚合物,在光催化制氢方面表现出较好的催化性能.本文以八面体CdTMT为基底,通过生长棒状Zn_(3)(C_(3)N_(3)S_(3))_(2)(ZnTMT),利用简便的一步原位水热法制备了不同比例的CdTMT/ZnTMT S型异质结光催化剂.通过X射线衍射、扫描电镜以及透射电镜对样品的晶体结构、微观形貌以及组成元素进行了表征,并利用X射线光电子能谱、开尔文探针力显微镜和电子顺磁共振等技术对复合材料的电子传输行为进行了详细分析.结果表明,在黑暗状态下,电子由CdTMT转移到ZnTMT,当光照时电子由ZnTMT转移到CdTMT,证实了CdTMT/ZnTMT S型异质结的成功构建.同时,拉曼光谱证明了三嗪环的存在.此外,考察了纯样品和复合材料的光催化析氢性能.结果表明,在光照下S型CdTMT/ZnTMT异质结的光催化析氢效率相较于单一催化剂ZnTMT与CdTMT有显著提升,最高达到45.24 mmol·g^(‒1)·h^(‒1),分别是ZnTMT和CdTMT的215.43倍和1.76倍.CdTMT/ZnTMT S型异质结的内建电场、能带弯曲和库仑力以及π共轭轨道之间存在协同作用,不仅保留了CdTMT导带上电子与ZnTMT价带上空穴的强氧化还原能力,而且通过重新配置氧化还原活性较低的光生电子和空穴,实现了更高的电子-空穴分离效率,从而增强了复合材料的光催化活性.上述结果与表征和密度泛函理论计算结果一致.鉴于聚合物体系在自然环境中的无序性,研究聚合物的电子传递机制仍具有一定的挑战性.本文通过成功构建双聚合物S型异质结,在显著优化光催化剂性能的同时,也为设计聚合物电子转移机制和优化聚合物光催化剂性能提供了新思路.

摘要：Designing high active,low cost and bifunctional electrocatalysts is urgent for developing clean energy storage and conversion *** metal selenides exhibit optimal electronic conductivity and tunable physicochemical properties,which endow them with potential for efficient electrocatalysts to facilitate the oxygen reduction and oxygen evolution reactions(ORR and OER).Herein,hollow NixCo0.85-xSe nanospheres were synthesized using a facile polyol based solution chemical *** NixCo0.85-xSe exhibits an onset overpotential of 0.89 V for ORR,and an overpotential of 305 mV to achieve 10 mA cm^-2 for ***,the NixCo0.85-xSe based Zn-air battery displays remarkable specific capacity and *** superior catalytic performances can be attributed to the synergistic effect,large specific surface area and enhanced electron transfer *** approach provides a new way to design highly efficient bifunctional electrocatalysts for electrochemical energy storage and utilization.

摘要：Ag3PO4 is widely used in the field of photocatalysis because of its unique activity. However, photocorrosion limits its practical application. Therefore, it is very urgent to find a solution to improve the light corrosion resistance of Ag3PO4. Herein, the Z-scheme WO3(H2O)0.333/Ag3PO4 composites are successfully prepared through microwave hydrothermal and simple stirring. The WO3(H2O)0.333/Ag3PO4 composites are characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and UV-Vis spectroscopy. In the degradation of organic pollutants, WO3(H2O)0.333/Ag3PO4 composites exhibit excellent performance under visible light. This is mainly attributed to the synergy of WO3(H2O)0.333 and Ag3PO4. Especially, the photocatalytic activity of 15%WO3(H2O)0.333/Ag3PO4 is the highest, and the methylene blue can be completely degraded in 4 min. In addition, the stability of the composites is also greatly enhanced. After five cycles of testing, the photocatalytic activity of 15%WO3(H2O)0.333/Ag3PO4 is not obviously decreased. However, the degradation efficiency of Ag3PO4 was only 20.2%. This indicates that adding WO3(H2O)0.333 can significantly improve the photoetching resistance of Ag3PO4. Finally, Z-scheme photocatalytic mechanism is investigated.