Silicon nanoporous pillar array and its surface copper deposition

Silicon nanoporous pillar array （Si-NPA） has been prepared by a hydrothermal etching technique. Using Si-NPA as substrate, a Cu/Si-NPA nanocomposite thin film has been obtained with immersion plating method. Morphological and structural analysis indicates that Si-NPA is a typical structural composite system characterized by a triple hierarchical structure, i. e. the array of micron-sized silicon pillars, the nanopores densely distributed on the surface of the pillars, and the silicon nanocrystallites that constitute the pore walls. Cu/Si-NPA inherits the morphological characteristics of Si-NPA. The compactability of the deposited copper nanoparticles varies alternatively with the local geometrical features of Si-NPA and forms a quasi-periodical pattern.Such an experimental phenomenon is attributed to the velocity dependence of the copper deposition upon the local geometrical features of Si-NPA. These results indicate that Si-NPA might be used as an ideal template for preparing specially patterned, structured or functionalized metal/silicon nanocomposite systems.     

利用藻类去除电镀废水中重金属的实验研究

用正交实验分析温度、金属浓度等因素对3种藻粉（小球藻粉、螺旋藻粉、海带粉）吸附电镀废水中重金属（Pb^2＋、Cu^2＋、Zn^2＋）的影响，同时比较活藻和藻粉对重金属的吸附量．研究结果表明：藻粉和活藻对3种重金属的吸附量顺序均为Pb^2＋〉Cu^2＋〉Zn^2＋，3种藻粉在温度为40℃，浓度为6mmol/L时均达到最大吸附量，每种藻粉对金属的吸附量与重金属溶液浓度呈正相关．死藻对重金属的吸附量明显大于活藻，死藻在工业上运用更具优势．     

印制电路板孔金属化新工艺的研究

本文研究了印制板孔金属化新技术，包括非导体表面在高锰酸钾碱性水溶液中发生化学反应生成二氧化化锰层，然后在酸溶液中，单体吡咯或吡咯系列杂环化合物在非导体表面上失去质子而聚合，生成紧附的不溶性导电聚合物，将附有这类导电聚合物的印制板直接电镀完成金属化。     

高性能连铸机结晶器铜板的研制

探讨了连铸技术对结晶器铜板性能的要求,在比较国内各种不同类型结晶器铜板性能的基础上,确定了研制方案,所研制的产品在强度、硬度、耐磨性、导热性等方面均优于国内现有结晶器铜板.     

深圳市电镀行业清洁生产方案应用概述

本文按清洁生产分析的八个途径,分别介绍深圳电镀行业开展清洁生产工作中,各类清洁生产方案的应用情况,方案实施给电镀企业带来环境和经济效益,以及各种方案在应用过程中存在的问题等。     

Morphology and Size Control of Cu2O Nanoparticles by Electro-deposition on Aluminum

The size and morphology of the Cu2O nanocrystals are crucial to improving the performance of photoelectric devices.In this paper,Cu2O nanocrystals have been deposited onto aluminum substrates.The effect of different applied potentials on the chemical composition,morphology and grain size has been investigated.Compared with previous work,it has been found that the potentials have strong effect on particle size,while the morphology changes only when the potentials over-0.5 V,but no other compositions such as CuO or Cu exist in the products,which could clarify the formation mechanism of the Cu2O nanocrystals.     

旱伞草修复镀锌厂含铬废水的研究

前期的筛选实验发现,旱伞草对铬具有良好的修复效果,以此为基础,采用溶液培养法,研究了旱伞草在不同总铬质量浓度、不同p H条件下的生长情况及对镀锌厂含铬废水的修复效果.研究结果表明:在10~30 mg/L的实验质量浓度范围内,旱伞草对镀锌厂含铬废水具有较强的耐受性和修复效果,能使废水中的铬和锌的质量浓度显著降低,达到国家农田灌溉水质标准.     

超声流动镀铜法制备铜包石墨粉

通过超声流动电镀法使铜均匀沉积在微米级鳞片石墨上,从而制得铜包石墨粉.研究了镀铜过程中工艺条件对镀铜效果及铜包石墨粉中铜质量分数的影响.结果表明,利用该工艺可以制备出铜质量分数为50%～75%、且铜镀层致密、连续的复合粉体.用该复合粉体制备了铜-石墨电刷,其导电和磨损性能明显优于石墨粉与铜粉直接混合制备的电刷.