Essential roles of defects in pure graphene/Cu2O photocatalyst

The pure graphene flakes with different abundance of defects were synthesized by CVD method to successfully prepare the graphene/Cu₂O composites for the photocatalytic degradation of methyl orange (MO) under visible light irradiation. The results illustrate that catalytic activity was strongly dependent on the abundance of defects in graphene flakes. The highest activity was measured to be 80.10% in 30 min light irradiation. Furthermore, we demonstrate that the defects in graphene could facilitate to construct an efficient interface between graphene and Cu₂O for narrowing the band gap of original Cu₂O semiconductor and inhibiting the recombination of photo-generated electron–hole pairs.     

影响灰铸铁气缸盖表面硬度的因素分析

分析了灰铸铁表层铁素体层的形成原因,综述了影响灰铸铁缸盖表面硬度的影响因素,包括生铁加入量、时效处理温度、孕育剂加入量、熔炼过热温度.通过试验验证表明,型砂含水量的增加促进气缸盖表面形成一层铁素体层,降低硬度值;生铁加入量越高,气缸盖表面硬度降低越明显.     

变革型领导对科研人员创新绩效的影响

目的本研究旨在探讨变革型领导对科研人员创新绩效的影响机制。方法采用变革型领导、心理授权以及科研人员创新问卷,在科研团队中收集了128个团队,共333对上下级配对调查问卷数据。结果通过多层线性回归分析,结果表明心理授权对变革型领导与科研人员创新之间的关系具有中介作用。结论变革型领导可以通过增加科研人员的心理授权来影响科研人员创新。     

用参数自整定模型在线检测空气处理机组故障

大型现代建筑大都安装了能源管理与控制系统(EMCS),EMCS系统储存的大量监控数据为空调系统的在线故障检测与诊断提供了方便。提出了一种利用参数自整定空调部件模型在线检测变风量空气处理机组故障的方法。利用遗传算法优化模型参数使模型预测数据与实测值数据的残差最小,因此空调部件模型有较高的预测精度。若模型预测数据与实测数据的残差超出了预先设定的阈值,就意味着变风量空气处理机组可能存在故障。针对在实际应用时确定故障检测阈值的困难,给出了用统计方法确定阈值的方法。故障检测方法在真实建筑中进行了应用和验证,结果表明该故障检测方法可以结合EMCS系统准确有效的检测变风量空气处理机组故障。     

纯棉织物SCD-3无甲醛免烫整理

采用免烫整理剂SCD-3对纯棉织物进行免烫整理,并通过正交试验优化了免烫整理工艺,即:SCD-3 130 g/L,催化剂MgCl2 · 6H2O20 g/L,保护剂CAN 20 g/L,硅酮柔软剂UM 30 g/L,冰醋酸0.5 g/L,95℃预烘100 s,160℃焙烘2 min.整理后棉织物的干折皱回复角(DWRA)可达290°,20次水洗后,DP等级可达3.5级,达到免烫纺织品的标准要求,且整理织物的机械强力损失和白度下降很少,布面无甲醛.     

电涌保护器在民用建筑电气设计中的选用

通过对持续运行电压、残压、通流容量、报警功能等具体参数的选择,阐述了在民用建筑电气设计中如何选择电涌保护器(SPD),从而保护系统持续稳定可靠运行。并从电压等级的选择、传输速率的选择、接口类型的选择等3个方面介绍了防雷器的选型,以期对电气设计人员选用SPD提供参考。     

Conducting Polymer Nanostructures: Template Synthesis and Applications in Energy Storage

Conducting polymer nanostructures have received increasing attention in both fundamental research and various application fields in recent decades. Compared with bulk conducting polymers, conducting polymer nanostructures are expected to display improved performance in energy storage because of the unique properties arising from their nanoscaled size: high electrical conductivity, large surface area, short path lengths for the transport of ions, and high electrochemical activity. Template methods are emerging for a sort of facile, efficient, and highly controllable synthesis of conducting polymer nanostructures. This paper reviews template synthesis routes for conducting polymer nanostructures, including soft and hard template methods, as well as its mechanisms. The application of conducting polymer mesostructures in energy storage devices, such as supercapacitors and rechargeable batteries, are discussed.