CAJ | 학술논문

通过化学修饰使碳纳米管表面富含各种氧功能团,利用XPS和TPD方法表征了碳纳米管表面氧功能团的化学物理特性.研究发现:对比于未修饰的碳纳米管,化学修饰后的碳纳米管对高毒性的铬酸根阴离子有很强的吸附能力;其优异的吸附能力归结于金属阴离子与纳米管表面氧功能团的相互作用.研究指出碳纳米管可以作为替代吸附材料用于处理废水中重金属阴离子.
통과화학수식사탄납미관표면부함각충양공능단,이용XPS화TPD방법표정료탄납미관표면양공능단적화학물리특성.연구발현:대비우미수식적탄납미관,화학수식후적탄납미관대고독성적락산근음리자유흔강적흡부능력;기우이적흡부능력귀결우금속음리자여납미관표면양공능단적상호작용.연구지출탄납미관가이작위체대흡부재료용우처리폐수중중금속음리자.
Carbon nanombes (CNTs)have been chemically functionalized with various oxygen-containing surface groups. The feature of abundant oxygen-containing surface functional groups on the functionalized CNTs is characterized by X-ray photoelectron spectroscopy and temperature-programmed desorption analyslis. Results indicate that the functionalized CNTs have a superior adsorption capacity toward anionic chromate CrO42-,a typical toxic heavy metal ion in waste water,as compared with the unmodified ones. The excellent adsorption ability of CrO42- is attributed to the interaction of CrO42- with the surface oxygen-containing functional groups on the modified CNTs. The functionalized CNTs can be potentially used as an alternatively viable and promising adsorbent for the removal of heavy metal anions in waste water.