%0 Journal Article
%T Adsorption of p-Nitrophenol by Nanosized Titanium Dioxide Surface Modified with 3,5-dinitrosalicylic Acid<br>3,5-二硝基水杨酸表面修饰纳米Ti2吸附对硝基苯酚
%A ZHENG Feng-ying
%A QIAN Sha-hu
%A LI Shun-xing
%A CHEN Zhi-yu
%A <br>郑凤英
%A 钱沙华
%A 李顺兴
%A 陈智煜
%J 环境科学
%D 2006
%I 
%X Nanometer size titanium dioxide modified with 3,5-dinitrosalicylic acid (3,5-DA) was prepared using chemical adsorption method. The influences of surface modification on the adsorption of p-nitrophenol (PNP) and the dispersion in solvent such as water, benzene and ethanol were studied. The 3,5-dinitrosalicylic acid is bonded to the surface hydroxyl from TiO2 nanoparticles, results in the formation of a stable, six-ring complex which color is buff. The 3, 5-DA-modified TiO2 nanoparticles have good dispersive capacity in water, benzene and ethanol. Under the optimum conditions such as pH value 3, adsorption time 10 min, the adsorption ratio of PNP by TiO2 is improved from 43% to 99.9% through surface modification. A new method could be used to remove directly 3 approximately 10mg/L PNP, and the residual concentrations is below the integrated wastewater discharge standard (GB 8978-1996).
%K titanium dioxide
%K surface modification
%K nanoparticle
%K adsorption
%K nitrophenol
%K aromatic pollution
%K in-depth treatment<br>二氧化钛
%K 表面修饰
%K 纳米粒子
%K 吸附法
%K 对硝基苯酚
%K 芳香族污染物
%K 深度处理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=570C44138E1EF10C&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=B31275AF3241DB2D&sid=D932AD0F8FDA3032&eid=CF89D3C02791C82E&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=14