摘要
以齐大山磁选的铁尾矿为原料,通过添加造孔剂采用模压—烧结法制备得到铁尾矿多孔基板,并探讨所获基板在Co3O4纳米材料合成中的应用。在对铁尾矿的粒度及成分分析的基础上,考察了造孔剂聚甲基丙烯酸甲酯(PMMA)微球的添加量对铁尾矿多孔基板的体积密度和显气孔率的影响规律。通过扫描电镜观察可知,铁尾矿中添加10%的PMMA微球时,所获多孔基板的孔隙结构最优。以Co(NO3)2·6H2O为钴源,尿素为碱源,蔗糖为模板剂,采用水热法在铁尾矿多孔基板表面制备得到Co3O4纳米线,并探究水热时间对Co3O4纳米线形貌的影响规律。分析结果表明,在水热温度160℃反应6 h时所获的Co3O4纳米线具有长径比高、形貌均一的特点,适用于作为纳米传感器的潜在原材料。
The iron tailings of magnetic separation in Qidashan mineral processing plant were used as raw materials to prepare the iron tailings-based porous substrate using a mold pressing and sintering method by adding pore-making agent,and then the application of the obtained substrate in the synthesis of Co3O4 nanomaterials was discussed.Based on the analysis results of the particle size and composition of iron tailings,the effect of the dosage of polymethyl methacrylate(PMMA)microspheres on the bulk density and porosity of iron tailings-based porous substrate was investigated.By scanning electron microscopy(SEM)observation,the pore structure of the porous substrate was optimal when PMMA microspheres of 10%were added into iron tailings.Co3O4 nanowires were prepared on the porous substrate by a hydrothermal method using Co(NO3)2·6H2O as cobalt source,urea as alkali source and sucrose as template agent.The influence of hydrothermal time on the morphology of Co3O4 nanowires was also investigated.The results illustrated that Co3O4 nanowires obtained at 160℃for 6 h showed high length-to-diameter ratio and uniform morphology,which were suitable for acting as the potential raw materials of nanosensors.
作者
黄丹丹
严倩倩
薛旭阳
任钰
沈岩柏
HUANG Dandan;YAN Qianqian;XUE Xuyang;REN Yu;SHEN Yanbai(School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China)
出处
《矿产保护与利用》
2020年第3期64-68,共5页
Conservation and Utilization of Mineral Resources
基金
国家自然科学基金资助项目(51674067)
中央高校基本科研业务费资助项目(N182410001,N180102032)
辽宁省“兴辽英才计划”项目资助(XLYC1807160)
东北大学大学生创新训练计划自筹项目(191073)
矿物加工科学与技术国家重点试验室开放基金资助(BGRIMM-KJSKL-2019-12)。
