“化学一步法”制备电磁功能化聚吡咯/γ-Fe2O3复合物纳米球及结构表征

在不添加掺杂剂的条件下,以吡咯为单体,三氯化铁为氧化剂,采用"化学一步法"合成了电磁功能化的聚吡咯/γ-Fe2O3复合物纳米结构.研究了不同氯化亚铁用量对聚吡咯/γ-Fe2O3复合物形貌、电学性能以及磁学性能的影响.结果表明,氯化亚铁的用量对聚吡咯/γ-Fe2O3复合物的形貌影响不大,都得到了聚吡咯/γ-Fe2O3复合物纳米球;然而,聚吡咯/γ-Fe2O3复合物纳米球的电学和磁学性能却明显受到氯化亚铁用量的影响.聚吡咯/γ-Fe2O3复合物纳米球的电导率和最大饱和磁化强度随着氯化亚铁用量的增加而增大,并在氯化亚铁用量增加到150 mg时达到最大值,分别为72.1 S/cm和10.07 A.m2/kg,实现了高电学性能和高磁学性能兼顾的电磁功能化导电聚合物纳米结构的制备.

用旋流化学一步法处理电镀综合废水

概述了旋流化学一步法处理电镀废水的简要机理,以及应用此法处理电镀废水的工艺流程和处理效果,并对技术特点进行了分析。

旋流化学一步法-电镀废水处理技术与设备

综合介绍了电镀废水的种类、来源和污染状况 ,详细阐述了旋流化学一步法 -电镀废水处理技术与设备的化学反应原理、特点及工艺流程。该技术与设备在实际应用中 ,经济可行 ,运行效果稳定 ,达标排放 。

化学剥离膨胀石墨制备石墨烯及属性研究

以膨胀石墨为原料,采用化学一步法剥离膨胀石墨制备石墨烯,对产物的产率、电导率、缺陷等进行表征分析。结果表明,在膨胀石墨与浓硫酸质量体积比为0.5∶40(g/mL),膨胀石墨与过硫酸钾质量比为0.5∶8,反应时间为5.0 h的优化条件下,获得的石墨烯中寡层石墨烯约占90%,片径小于12μm的石墨烯约占88%;片径大于12μm的石墨烯约占12%;制备的石墨烯电导率为1.85×10^(4) S/m,灰分为1.01%。该方法制备的石墨烯氧化程度极低,可有效保留石墨完善的晶体结构。

One-step synthesis of Pt nanoparticles/reduced graphene oxide composite with enhanced electrochemical catalytic activity

A one-step electrochemical approach for synthesis of Pt nanoparticles/reduced graphene oxide （Pt/RGO） was demonstrated. Graphene oxide （GO） and chloroplatinic acid were reduced to RGO and Pt nanoparticles （Pt NPs） simultaneously, and Pt/RGO composite was deposited on the fluorine doped SnO2 glass during the electrochemical reduction. The Pt/RGO composite was characterized by field emission-scanning electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy, which confirmed the reduction of GO and chloroplatinic acid and the formation of Pt/RGO composite. In comparison with Pt NPs and RGO electrodes obtained by the same method, results of cyclic voltammetry and electrochemical impedance spec- troscopy measurements showed that the composite electrode had higher catalytic activity and charge transfer rate. In addition, the composite electrode had proved to have better performance in DSSCs than the Pt NPs electrode, which showed the poten- tial application in energy conversion.