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Adsorption complexation of some amino acids with Cu(II) ion on carbon nanotube Mehdi Vadi , Mozhgan Jafary, Mohammad Ali Gorgin, Frank Poladiyan:Islamic Azad University Firouzabad Branch,Firouzabad, Iran In this experiment, adsorption of L-alanine , L-asparagine , L- cysteine , L- histidine , L- methionine , L- clycine, L-valine , L-treonine and their complexation with copper (II) nitrate , tri- hydrate upon Multi – wall type carbon nanotube (CNT) to be measured with ultraviolet- visible spectroscopy (UV/Vis) method. After we prepare the molar solutions of complexation of this amino acids with Cu(NO3)2.3H20 we added them to 0.01 gr. CNT. Then, after 24 hours agitation with mechanical stirrer in room temperature, we filtered it with paper filter. Next, we measured adsorption of filtrate solutions with ( IS Lambda 5 ) spectrophotometer. Finally, we calculated gram adsorbed complex on 100 gr. CNT. The maximum gram adsorbed complex was found to be L- cysteine complex equal 2.62 in Max = 229.6 and then, L-asparagines complex equal 1.31in Max = 226.4 . In L-cysteine the sulfur atom binds readily to heavy metal ions. The electron donating –SH group increase the resonance effect due to the acids effect decrease so it has more adsorption on CNT,and then L-asparagine is one of the principal and most abundant amino acids involved in the transport of nitrogen. It has two amide groups with electron donating effect due to them increase the resonance and base effect so it has more adsorption on CNT too. L-asparagine has carboxamide as the side chains functional group that it can form hydrogen bond interactions. More over, the distances of the two c=o bonds are significantly different due to different hydrogen bond environments. The conformation of the side chain is Trans, which distinguishes it significantly from that of the amino acid monohydrates. Keywords: Adsorption; Amino acid; Complexation; Cu(II) ion; Carbon nanotube متیونین و-هیستیدین و ال- ال. سیستئن-آسپارژین و ال- آالنین و ال-در این آ زمایش جذب اسید های آ مینه ال ) مس سه آبه روی کربن نوع چند دیواره باп( ترئونین و کمپلکس انها با نیترات- والین و ال- گالیسین ال-ال بعد از آماده سازی محلولهای موالر از. مرئی اندازه گیری شده است-روش اسپکتروسکوپی ماوراء بنفش گرم کربن نانو تیوب اضافه کرده و0.01 ما انها را بهCu(NO3)2.3H20 کمپلکسهای این اسیدهای امینه با ساعت به هم زدن با برهمزننده مکانیکی در دمای اتاق ما مخلوط را با کاغذ صافی صاف24 سپس بعد از . (اندازه گیری شدIS Lambda 5 ) سپس جذب محلول زیر صافی با دستگاه اسپکتروفتومتر مدل.کردیم سرانجام گرم کمپلکس جذب شده روی 100گرم کربن نانو تیوب محاسبه شد .بیشترین گرم کمپلکس جذب شده برای ال -سیستئین برابر 2.62در Max= 229.6و بعد برای ال -آسپارژین برابر 1.31در Max = 226.4 پیدا شده است. L-Asparagine structure