Halloysite and sepiolite -TiO2 nanocomposites: Synthesis characterization and photocatalytic activity in three aquatic wastes

被引：47

作者：

Papoulis, D. ^{[1
]}

Panagiotaras, D. ^{[2
]}

Tsigrou, P. ^{[1
]}

Christoforidis, K. C. ^{[3
]}

Petit, C. ^{[3
]}

Apostolopoulou, A. ^{[4
]}

Stathatos, E. ^{[4
]}

Komarneni, S. ^{[5
,6
]}

Koukouvelas, I. ^{[1
]}

机构：

[1] Univ Patras, Dept Geol, Patras 26504, Greece

[2] Technol Educ Inst Western Greece, Dept Mech Engn, Lab Chem, Patras 26334, Greece

[3] Imperial Coll London, Dept Chem Engn, Barrer Ctr, South Kensington Campus, London SW7 2AZ, England

[4] Technol Educ Inst Western Greece, Dept Elect Engn, Nanotechnol & Adv Mat Lab, Patras 26334, Greece

[5] Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA

[6] Penn State Univ, Mat Res Inst, Mat Res Lab 204, University Pk, PA 16802 USA

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2018年 / 85卷

关键词：

Sepiolite; Halloysite; Titania nanocomposite; Antibiotics; Photocatalytic materials; NANOCRYSTALLINE TIO2; DEGRADATION; WATER; ACETAMINOPHEN; TETRACYCLINE; CORINTH; GREECE; GULF; CLAY;

D O I：

10.1016/j.mssp.2018.05.025

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Two different nanoclay minerals were combined with nanophase anatase TiO2 for the synthesis of clay-based nanocomposites for improved photocatalytic properties. A new Halloysite (Hal) + Sepiolite (S) - TiO2 ternary nanocomposite was prepared using halloysite from Utah, USA and a recently discovered sepiolite from Greece. Three nanocomposites were synthesized with Hal-TiO2, S-TiO2 and [Hal + S] to TiO2. As a result, TiO2 particles (anatase) were homogeneously deposited and dispersed on the clay surfaces. Phase composition, particle morphology and physical properties of these nanocomposites were characterized by XRD, ATR-FTIR, FE-SEM, DRS-UV-Vis and N-2-sorption/desorption isotherms at 77 K. The photocatalytic activity of the clay mineral-TiO2 nanocomposites was examined in the decomposition of paracetamol and tetracycline antibiotics as well as dye Rhodamine-B. The nanocomposites exhibited higher photocatalytic activity under UV irradiation for the decomposition of the targeted pollutants than the benchmark in the field, i.e. TiO2-P25 photocatalyst.

引用

页码：1 / 8

页数：8

共 31 条

[11] Water vapor adsorption and photocatalytic pollutant degradation with TiO2-sepiolite nanocomposites [J].