Preparation of Bamboo Cellulose/Mg-Al LDH Composite Aerogel and Its Adsorption Performance for Chromium (CrO<sub>4</sub><sup>2-</sup>)

SHEN Xiao-yuan; DUAN Xin-peng; JIN Yang-bing; ZHANG Ping; WANG Zhe; JIN Chun-de

Sep. 2021

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SHEN Xiao-yuan, DUAN Xin-peng, JIN Yang-bing, ZHANG Ping, WANG Zhe, JIN Chun-de. Preparation of Bamboo Cellulose/Mg-Al LDH Composite Aerogel and Its Adsorption Performance for Chromium (CrO42-)[J]. JOURNAL OF BAMBOO RESEARCH, 2021, 40(1): 32-37.

Citation:

SHEN Xiao-yuan, DUAN Xin-peng, JIN Yang-bing, ZHANG Ping, WANG Zhe, JIN Chun-de. Preparation of Bamboo Cellulose/Mg-Al LDH Composite Aerogel and Its Adsorption Performance for Chromium (CrO₄^2-)[J]. JOURNAL OF BAMBOO RESEARCH, 2021, 40(1): 32-37.

Citation:

SHEN Xiao-yuan, DUAN Xin-peng, JIN Yang-bing, ZHANG Ping, WANG Zhe, JIN Chun-de. Preparation of Bamboo Cellulose/Mg-Al LDH Composite Aerogel and Its Adsorption Performance for Chromium (CrO₄^2-)[J]. JOURNAL OF BAMBOO RESEARCH, 2021, 40(1): 32-37.

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Preparation of Bamboo Cellulose/Mg-Al LDH Composite Aerogel and Its Adsorption Performance for Chromium (CrO₄^2-)

Shool of Engineering, Zhejiang A & F University, Hangzhou 311300, Zhejiang, China

Received Date: 2020-12-11
Available Online: 2021-09-10

Abstract

Abstract

Magnesium-aluminum layered double hydroxide (Mg-Al LDH) and bamboo pulp paper were used as raw materials, and bamboo cellulose/Mg-Al LDH composite aerogels with adsorption function of CrO₄^2- in water were prepared by the methods of ball milling assisted physical blending and one-step freezing. The effects of Mg/Al molecular ratio of Mg-Al LDH, dosage ratio of composites and pH value of water on the adsorption properties of bamboo cellulose/Mg-Al LDH composite aerogel CrO₄^2- were studied in detail. The morphology and chemical structure of aerogel before and after adsorption were characterized by SEM, TEM, FT-IR, XRD and XPS, and the change of CrO₄^2- concentration was tested by ICP-OES. The results showed that Mg-Al LDH grew well in the bamboo fiber skeleton channel and formed a three-dimensional hierarchical porous structure with a specific surface area of 203.4 m²·g^-1. The adsorption performance of bamboo cellulose/Mg-Al LDH composite aerogel for CrO₄^2- was obviously better than that of Mg-Al LDH, and it was stable in a wide range of pH (4:10), and the maximum adsorption capacity reached 28.60 mg·g^-1.
- Bamboo cellulose,
- Mg-Al LDH,
- Composite aerogels,
- Adsorption

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References(15)

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