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Lin D, Huang Y, Yang Y, Long X, Qin W, Chen H, Zhang Q, Wu Z, Li S, Wu D, Hu L, Zhang X. Preparation and Characterization of Highly Ordered Mercapto-Modified Bridged Silsesquioxane for Removing Ammonia-Nitrogen from Water. Polymers (Basel) 2018; 10:E819. [PMID: 30960744 PMCID: PMC6403600 DOI: 10.3390/polym10080819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 07/19/2018] [Accepted: 07/19/2018] [Indexed: 11/16/2022] Open
Abstract
In acidic conditions, mesoporous molecular sieves SBA-15 and SBA-15-SH were synthesized. Structural characterization was carried out by powder X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), 13C CP MAS-NMR, 29Si CP MAS-NMR and nitrogen adsorption⁻desorption (BET). The results showed that in SBA-15-SH, the direct synthesis method made the absorption peak intensity weaker than that of SBA-15, while the post-grafted peak intensity did not change. Their spectra were different due to the C-H stretching bands of Si-O-Si and propyl groups. But their structure was still evenly distributed and was still hexangular mesoporous structure. Their pore size increased, and the H-SBA-15-SH had larger pore size. The adsorption of ammonia-nitrogen by molecular sieve was affected by the relative pressure and the concentration of ammonia-nitrogen, in which the adsorption capacity of G-SBA-15-SH was the largest and the adsorption capacity of SBA-15 was the smallest.
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Affiliation(s)
- Derong Lin
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
| | - Yichen Huang
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
| | - Yuanmeng Yang
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
| | - Xiaomei Long
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
| | - Wen Qin
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
| | - Hong Chen
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
| | - Qing Zhang
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
| | - Zhijun Wu
- School of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya'an 625014, China.
| | - Suqing Li
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
| | - Dingtao Wu
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
| | - Lijiang Hu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Xingwen Zhang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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