Preparation and Properties of Nano TiO2-ZnO Binary Collaborative Wood†

doi:10.7503/cjcu20150829

Abstract

Abstract:

Nano TiO₂/ZnO binary collaborative wood was prepared via two step method. The structure and morphology of the samples were characterized by X-ray diffraction(XRD), Fourier transform infrared spectrometer(FTIR) and scanning electron microscopy(SEM), while its antibacterial and weather resistance properties under different preparative conditions were also investigated. According to the results, nano TiO₂/ZnO binary collaborative wood shows better performance than those treated by single nanomaterial in both properties, and n-hexane treated ones are better than those treated by anhydrous ethanol or distilled water, and wood with nano oxide shows better than those with non-nano oxide.

Key words: Binary collaborative, Zinc oxide, Titanium dioxide, Nanoscale metal oxide

CLC Number:

O614
S781.7

TrendMD:

GAO He, LIANG Daxin, LI Jian, PANG Guangsheng, FANG Zhenxing. Preparation and Properties of Nano TiO₂-ZnO Binary Collaborative Wood^†[J]. Chem. J. Chinese Universities, 2016, 37(6): 1075.

Figures/Tables 8

Fig.1 SEM images of blank poplar wood with different magnifications

Fig.2 SEM images of poplar wood treated under different conditions(A) Treated by TiO2 in n-hexane; (B) treated by ZnO in n-hexane; (C) treated by TiO2 and ZnO in distilled water; (D) treated by TiO2 and ZnO in anhydrous ethanol; (E) treated by TiO2 and ZnO in n-hexane; (F) high resolution image of binary collaborative nano-functional wood.

Fig.3 SEM images of poplar wood treated under different conditions without hydrothermal treatment(A) Treated by ZnO; (B) treated by TiO2; (C) treated by TiO2 and ZnO in distilled water.

Fig.4 XRD patterns of poplar wood treated under different conditionsa. Blank poplar wood; b. treated by TiO2 in n-hexane; c. treated by ZnO in n-hexane; d. treated by TiO2 and ZnO in distilled water; e. treated by TiO2 and ZnO in anhydrous ethanol; f. treated by TiO2 and ZnO in n-hexane.

Fig.5 XRD patterns of blank poplar wood treated by different solventsa. Blank poplar wood; b. treated by distilled water; c. treated by anhydrous ethanol; d. treated by n-hexane.

Fig.6 FTIR spectra of treated poplar wood under different conditionsa. Blank poplar wood; b. treated by TiO2 in n-hexane; c. treated by ZnO in n-hexane; d. treated by TiO2 and ZnO in distilled water; e. treated by TiO2 and ZnO in anhydrous ethanol; f. treated by TiO2 and ZnO in n-hexane.

Fig.7 Color change of various treated specimen during light aging processa. Blank poplar wood; b. treated by TiO2 in n-hexane; c. treated by ZnO in n-hexane; d. treated by TiO2 and ZnO in distilled water; e. treated by TiO2 and ZnO in anhydrous ethanol; f. treated by TiO2 and ZnO in n-hexane; g. treated by ZnO; h. treated by TiO2; i. treated by TiO2 and ZnO.

Table 1 Diameter of inhibition zone in E. coli and Staphylococcus aureus culture mediums and band gap data*

No.	Solvent	Species of nanomaterial applied on wood	Diameter of inhibition zone/mm		Band gap/eV
No.	Solvent	Species of nanomaterial applied on wood	E. coli		Staphylococcus aureus
1			0	0
2	n-Hexane	ZnO	18	22	2.74
3	n-Hexane	TiO₂	21	22	2.76
4	Distilled water	ZnO and TiO₂	20	23	2.69
5	Anhydrous ethanol	ZnO and TiO₂	20	19	2.57
6	n-Hexane	ZnO and TiO₂	25	24	2.22
7		ZnO	11	13	3.11
8		TiO₂	12	12.5	3.08
9		ZnO and TiO₂	15	14.5	2.91

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Preparation and Properties of Nano TiO₂-ZnO Binary Collaborative Wood^†

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