A Micro Gas Chromatographic Column with Large Surface Area Based on Anodization
10.19756/j.issn.0253-3820.251178
- VernacularTitle:基于阳极氧化技术制备大表面积微型气相色谱柱及其应用
- Author:
Shao-Jie MA
1
;
Wen-Bo LI
;
Yu-Chen ZHU
;
Bo-Xin CHEN
;
Zhi-Rui LI
;
Bin ZHAO
;
Fei FENG
Author Information
1. 中国科学院上海微系统与信息技术研究所,传感技术国家重点实验室,上海 200050;中国科学院大学材料科学与光电工程中心,北京 100049
- Keywords:
Anodization;
Micro gas chromatographic column;
Mesoporous silicon support layer;
Alumina stationary phase
- From:
Chinese Journal of Analytical Chemistry
2025;53(10):1607-1614
- CountryChina
- Language:Chinese
-
Abstract:
A micro gas chromatographic column with mesoporous surface micro column array prepared by anodization method was proposed.A porous support layer with a characteristic pore size of about 30 nm inside the chromatographic column was prepared in situ using anodization method,and a uniform alumina stationary phase was deposited on the mesoporous support layer using atom layer deposition(ALD)technique.The existence of a mesoporous support layer increased surface area of the chromatographic column,thereby increasing the total amount of stationary phase loading and enhancing column capacity,which facilitated chromatographic separation.The test results showed that the porous support layer significantly reduced the longitudinal molecular diffusion and mass transfer resistance of the micro gas chromatographic column,and significantly increased the number of theoretical plates(n-nonane increased by 290.2%).Furthermore,column efficiency of the chromatographic column was less affected by flow rate,which was conducive to rapid separation of heavy hydrocarbon mixtures.
