A handy way for forming N-doped TiO 2 /carbon from pectin and d,l-serine hydrazide hydrochloride.

Autor: Xiong ZW; College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China., Guo LN; College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China., Jiang H; College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China., Zhang Y; College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China., Gao Q; College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China., Li J; College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China. Electronic address: junli107@163.com., Chen S; Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China., Li X; Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China., Javaid MA; Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan., Li DQ; College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China., Xie H; Hangzhou Yanqu Information Technology Co., Ltd., Hangzhou 310003, Zhejiang, PR China.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Oct; Vol. 277 (Pt 2), pp. 134155. Date of Electronic Publication: 2024 Aug 04.
DOI: 10.1016/j.ijbiomac.2024.134155
Abstrakt: N-doped TiO 2 /carbon composites (N-TiPC) have shown excellent photodegradation performances to the organic contaminants but are limited by the multistage preparation (i.e., preparation of porous carbon, preparation of N-doped TiO 2 , and loading of N-doped TiO 2 on porous carbon). Here, we develop a handy way by combining the Pickering emulsion-gel template route and chelation reaction of polysaccharides. The N-TiPC is obtained by calcinating pectin/Dl-serine hydrazide hydrochloride (SHH)-Ti 4+ chelate and is further described by modern characterization techniques. The results show that the N atom is successfully doped into the TiO 2 lattice, and the bandgap value of N-TiPC is reduced to 2.3 eV. Moreover, the particle size of N-TiPC remains about 10 nm. The configurations of the composites are simulated using DFT calculation. The photocatalytic experiments show that N-TiPC has a high removal efficiency for methylene blue (MB) and oxytetracycline hydrochloride (OTC-HCL). The removal ratios of MB (20 mg/L, 50 mL) and OTC-HCL (30 mg/L, 50 mL) are 99.41 % and 78.29 %, respectively. The cyclic experiments show that the photocatalyst has good stability. Overall, this study provides a handy way to form N-TiPC with enhanced photodegradation performances. It can also be promoted to other macromolecules such as cellulose and its derivatives, sodium alginate, chitosan, lignin, etc.
Competing Interests: Declaration of competing interest The authors declare no competing financial interests.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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