【摘 要】
:
Photocatalytic water splitting for hydrogen(H2) generation is a potential strategy to solve the problem of energy crisis and environmental deterioration.However,powder-like photocatalysts are difficult to recycle,and the agglomeration of particles would a
【机 构】
:
Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilizatio
论文部分内容阅读
Photocatalytic water splitting for hydrogen(H2) generation is a potential strategy to solve the problem of energy crisis and environmental deterioration.However,powder-like photocatalysts are difficult to recycle,and the agglomeration of particles would affect the photocatalytic activity.Herein,a direct Z-scheme CdS/WO3 composite photocatalyst was fabricated based on carbon cloth through a two-step process.With the support of carbon cloth,photocatalysts tend to grow uniformly for further applica-tions.The experimental results showed that the H2 yield of adding one piece of CdS/WO3 composite material was 17.28 μmol/h,which was 5.5 times as compared to that of pure CdS-loaded carbon cloth material.A cycle experi-ment was conducted to verify the stability of the as-prepared material and the result demonstrated that the H2 generation performance of CdS/WO3 decreased slightly after 3 cycles.This work provides new ideas for the development of recyclable photocatalysts and has a positive significance for practical applications.
其他文献
The development of automatic tracking solar concentrator photovoltaic systems is currently attracting growing interest.High concentration photovoltaic systems(HCPVs) combining triple-junction InGaP/lnGaAs/Ge solar cells with a concentrator provide high co
In this paper,based on the mixture flow model,an optimized six-flux model is first established and applied to the tubular solar photocatalytic reactor.Parameters influencing photocatalyst distribution and radiation dis-tribution at the reactor outlet,viz.
TBM施工在国内已有20多年的历史,技术比较成熟,适用于15~25km中长距离、围岩状况较完整的中硬度岩石的隧洞工程,具有速度快、清洁环保、可有效降低隧洞施工对人体健康损害的优点,是未来长大深埋隧洞施工的首选工法.TBM施工及造价易受设备选型、围岩条件、渗漏水情况三方面因素的影响.设备选型可通过采购方案比选最大限度降低其对施工及造价的风险;TBM施工遭遇IV、V类围岩和渗漏水往往不可避免,而现阶段相关行业普遍对围岩类别变更、地下渗水量增加两个因素对造价影响的重视程度没有达到应有高度,招标文件相关条款约定普
With the relocation of heavy industries moving from downstream region to upstream and midstream regions in the Yangtze River Economic Belt (YREB),it is critical to encourage coordinated low carbon develop-ment in different regions within the YREB.This pap
InP shows a very high efficiency for solar light to electricity conversion in solar cell and may present an expectation property in photocatalytic hydrogen evolution.However,it suffers serious corrosion in water dispersion.In this paper,it is demonstrated
Surface reconstructed SrTiO3 nanocrystals were synthesized by a thermal treatment process in presence of NaBH4 and SrTiO3 nanocrystals.The surface reconstruction of SrTiO3 nanocrystals is attributed to the introduction of surface oxygen vacancies or Ti si
清代民间商务会馆是当时商人联谊、议事、交易和宴乐场所,其功能需求和当时的建筑工艺水平,很大程度决定其建设成本及工料构成.文章以位于山东聊城的会馆为例,结合相关史料文献,通过分析会馆留存碑碣记载改扩建中的资金情况,并以商号抽厘捐银、会馆物料支出及工匠工资细目为数据样本,研究会馆在不同时期的改扩建历程下,建设成本与工料信息在资金导向及运用方式下的构成明细.文章采用购买力平价理论、定量分析、对比现代造价体系等方法,从工程竣工后评估的角度,深入剖析清代民间商务会馆建设成本及其构成,得出此类大木作施工建筑所需木材消
为了实现焊管生产线横移车稳定可靠的自动化运行,通过对比多种横移车的位置检测方案,设计了基于STL语言的焊管生产线横移车自动控制系统,并重点阐述了该系统硬件和软件设计.方案采用V形台架进行钢管定位,使用激光测距传感器进行横移车定位,采用西门子S7-300 PLC对控制逻辑进行抽象集成,使用STL语言编写核心程序,触摸屏动态显示运行数据.经现场应用,取得了理想的效果,降低了作业强度,且具备操作简单、信息直观的优点.
Uses of layered alkali titanates (A2TinO2n+1;Na2Ti3O7,K2Ti4O9,and Cs2TisO11) for energy and environmental issues are summarized.Layered alkali titanates of various structural types and compositions are regarded as a class of nanostructured materials based
为减小管道磁性,避免焊接工作中虚接产生电弧而损伤母材,设计了一种电焊地线磁力接触器.该装置由不锈钢电极板、电木绝缘板、强磁块等部件构成,其中强磁块通过高强度磁力吸附可以保证焊接时无论工件平动、滚动及其它位移,电焊地线磁力接触器都能很好地保持良好的接触性能.电焊地线磁力接触器现场应用表明,该装置能够提高工作效率,避免焊接缺陷,并便于拆装,使用方便灵活,增强了焊接接地稳定性,保障了施工人员的安全,可应用于各种焊接工作环境,具有实际应用意义与推广价值.