【摘 要】
：
Developing large-scale electrocatalysts using molecular complexes for the oxygen evolution reaction (OER) is of great importance. Herein, four cobalt porphyrins and corroles are deposited on electrode substrates using a simple and fast electropolymerizati
【机 构】
：
Key Laboratory of Applied Surface and Colloid Chemistry,Ministry of Education,School of Chemistry an
论文部分内容阅读
Developing large-scale electrocatalysts using molecular complexes for the oxygen evolution reaction (OER) is of great importance. Herein, four cobalt porphyrins and corroles are deposited on electrode substrates using a simple and fast electropolymerization method. Our results showed that Co-1-P@CC, formed by electropolymerizing Co tetrakis(p-N-pyrrolylphenyl)porphyrin (Co-1-P) on carbon cloth (CC), is the most active OER catalyst in the examined Co porphyrins and corroles in alkaline aqueous solutions by dis-playing an onset overpotential of 380 mV. Long-term electrolysis tests confirmed the stability of these electropolymerized films by functioning as OER electrocatalysts.
其他文献
基于吊装防沉板的安装模式,建立全新的安装工艺,该工艺将防沉板入泥角度和入泥后设备的位置纳入考虑范围.配置补偿块增大单边入水阻力,使防沉板保持水平入泥.在导管架下方设置角度调节块弥补泥层倾斜角度,使导管架上方设备保持水平.对传统水下防沉板增大承载能力的工艺进行优化:采用展翼结构增大防沉板承载面积,且防止泥沙影响遥控无人潜水器(ROV)的视野.初步试验结果表明,安装工艺可确保防沉板和导管架上方设备安装后的水平状态,且使其具备合格的承载能力.该工艺可在一定程度上提高工作效率、节约成本,还可为优化水下防沉板安装工
Single-atom site catalysts (SACs) and two-dimensional materials (2DM) have gradually become two hot topics in catalysis over the past decades. Their combination with each other can further endow the de-rived SACs with extraordinary properties such as high
Ammonium vanadate has been considered as a competitive high-performance cathode material for aque-ous Zn-ion batteries. However, it still suffers from insufficient rate capability and poor cyclability due to the low electronic conductivity. Herein, (NH4)2
为确保半潜式平台在码头防台风系泊时得到更精确的风载荷,以得到合理的系泊布置方式,以2座半潜式平台为研究对象,采用美国石油协会(API)规范、挪威石油标准化组织(NORSOK)规范和国内《港口工程荷载规范》中风载荷经验公式进行精细的理论计算,将其结果与精细模型和简化模型的风洞试验结果进行比较,分析得到各经验公式设计的冗余度和受风面积统计的简化方法,为后期码头系泊力计算提供合理的风载荷.
中国海洋油气田生产在我国油气田开采中占据重要地位,随着渤海油田平台进入生产中后期,油田在开采过程中面临采出液中第一副产物含水质量分数增大、成分愈加复杂和油水乳化加剧的问题.对渤海油田生产水处理工艺及设备进行总结,重点介绍适用于渤海稠油油田及轻质油田生产水处理工艺,并对斜板除油器、旋流除油器、气浮除油器、多介质过滤器和新型组合纤维聚结(Combination Fiber Coalescence,CFC)除油设备机理及应用场合进行介绍.
分析某海洋修井机钻具与转盘中心对中偏差超限值的问题,收集平台设计、建造、运行过程中的数据并对修井机在不同井位时相关结构的变形数据进行校核,在确认导管架桩基承载力和上部组块杆件的强度仍满足要求后,提出对已发生变形的滑轨进行整体更换并重新调平的方案,经过测试确认所提方案满足修井作业的要求.
依托国内近年某较深水气田开发项目,介绍该项目中软管垂直铺设有关的设备资源、软管参数、环境参数和主要施工内容,给出软管垂直铺设计算分析有关的接受准则和软件模型基础.详细论述基于该软管垂直铺设的安装模拟计算分析工作,包括对软管铺设的各个过程有针对性地进行安装模拟计算及结果分析,确定软管铺设过程中软管及主要安装设备的受力,确定海上施工适合作业天气窗口.研究工作可为后续类似项目提供借鉴.
The development of robust photocatalytic systems is key to harvest the solar power for hydrogen pro-duction. In the current study, a series of aluminum-based porphyrinic metal organic frameworks (Al-TCPP) with various morphologies of bulk, carambola-like
n-Alkanes have been widely used as phase change materials (PCMs) for thermal energy storage applica-tions because of their exceptional phase transition performance, high chemical stability, long term cyclic stability and non-toxicity. However, the thermod