title: [Studies on interaction of acid-treated nanotube titanic acid and amino acids].
abstract: Nanotube titanic acid (NTA) has distinct optical and electrical character, and has photocatalysis character. In accordance with these qualities, NTA was treated with acid so as to enhance its surface activity. Surface structures and surface groups of acid-treated NTA were characterized and analyzed by Transmission Electron Microscope (TEM) and Fourier Transform Infrared Spectrometry (FT-IR). The interaction between acid-treated NTA and amino acids was investigated. Analysis results showed that the lengths of acid-treated NTA became obviously shorter. The diameters of nanotube bundles did not change obviously with acid-treating. Meanwhile, the surface of acid-treated NTA was cross-linked with carboxyl or esterfunction. In addition, acid-treated NTA can catch amino acid residues easily, and then form close combination.
authors.affiliation: The Key Laboratory of Biomedical Information Engineering of Ministry of Education and Bioinfonnrmatics Research Center, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China. huqzhang@mail.xjtu.edu.cn
authors.forename: Huqin
authors.initials: H
authors.lastname: Zhang
authors.forename: Xuemei
authors.initials: X
authors.lastname: Chen
authors.forename: Zhensheng
authors.initials: Z
authors.lastname: Jin
authors.forename: Guangxi
authors.initials: G
authors.lastname: Liao
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Wu
authors.forename: Jianqiang
authors.initials: J
authors.lastname: Du
authors.forename: Xiang
authors.initials: X
authors.lastname: Cao
mesh_terms: D019342:Acetic Acid / Q000737:chemistry; D000327:Adsorption; D000596:Amino Acids / Q000737:chemistry*; D004347:Drug Interactions; D043942:Nanotubes / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D000596:Amino Acids; D010087:Oxides; C525208:peroxo-titanate; D014025:Titanium; D019342:Acetic Acid