琼002井尾管固井技术

介绍了新疆塔西南地区琼００２井使用引进的ＰＳ型液压—机械双作用尾管悬挂器进行深井固井的成功经验。探讨了液压坐挂失败的主要原因，并提出对策建议。     

对ETAG002中硅酮结构胶检测方法的评议

本文简要介绍了ETAG002《结构密封胶玻璃装配系统技术审核指南》中对硅酮结构密封胶试验项目的检测方法,并对该检测方法的可行性与合理性进行了评议。     

Crystal facets engineering of ZnxCd1-xS for enhancing photocatalytic H2 evolution performance

Crystal facets engineering has been demonstrated to be an effective way to enhance the photocatalytic activity of semiconductor photocatalysts. Herein, the dendrite Zn_0·2Cd_0·8S photocatalyst was prepared by one-pot hydrothermal method with hydrofluoric acid (HF) as a morphology regulating agent to promote the formation of {002} crystal facets. The Zn_0·2Cd_0·8S photocatalyst (ZCS-0.8) with a high specific surface area added with 0.8 mL of HF has a highly efficient photocatalytic activity and cycle stability. The hydrogen evolution rate of ZCS-0.8 reaches 3100.3 μmol h⁻¹ g⁻¹, which is 7 times higher than that of ZCS without HF. The result indicates the superiority of {002} facets in ZCS photocatalyst, and the controllable exposure of the active surface can be achieved by adding the appropriate amount of HF, thereby upgrading subsequent hydrogen evolution performance. This work demonstrate that the dendritic ZCS-0.8 has a good application prospect in hydrogen production by water splitting, and provides a new strategy for the design and development of high-performance photocatalysts.