Bio-inspired synthesis of N-doped TiO<sub>2</sub>/C nanocrystals using jellyfish mucus with high visible-light photocatalytic efficiency

doi:10.1039/d4na00309h

	Bio-inspired synthesis of N-doped TiO₂/C nanocrystals using jellyfish mucus with high visible-light photocatalytic efficiency
	Feng, Song1,2 ; Liu, Lingchen 3,7; Lin, Jianing4,5 ; Wang, Ziwei 6; Gu, Jinzeng 4,5; Zhang, Lutao 4,5; Zhang, Bin 3; Sun, Song1,2
	2024-07-23
发表期刊	NANOSCALE ADVANCES
ISSN	2516-0230
卷号	6 期号:15 页码:17
通讯作者	Feng, Song(fengsong@qdio.ac.cn) ; Liu, Lingchen(lingchen2773@163.com) ; Lin, Jianing(linjianing@sdu.edu.cn) ; Zhang, Bin(0720060057@mail.xhu.edu.cn)
摘要	Non-metal doping of titanium dioxide (TiO2) has been widely investigated, because it can facilely improve the optical response of TiO2 under visible light excitation in environmental pollution treatments. In the ongoing efforts, however, little consideration has been given to the use of harmful marine organisms as dopants. Here, we employed the natural mucus proteins of the large harmful jellyfish Aurelia coerulea and Nemopilema nomurai, which have frequently bloomed in East Asian marginal seas in recent decades, to synthesize mesoporous nitrogen-doped TiO2 nanocrystals modified with carbon (N-TiO2/C) by a simple hydrothermal method. These nanocrystals were composed of predominantly anatase phase and a small amount of brookite phase TiO2. Their mesoporous structures changed with the variation of the volume ratio of jellyfish mucus added to tetrabutyl titanate (TBT). At the same ratio, larger surface area and pore volume but smaller pore size were observed in N-TiO2/C nanocrystals from N. nomurai rather than A. coerulea. Nitrogen was determinately doped into the lattice of the prepared nanocrystals and the carbon species were modified on their surfaces, which narrowed the band gap, facilitated the separation of photogenerated electron-hole pairs and favored the absorption of visible light, thus improving their visible light photocatalytic activity. The photocatalytic degradation efficiency of Rhodamine B (RhB) under visible light irradiation first increased and then decreased with the gradual increase of the volume ratio of jellyfish mucus proteins to TBT. The maximum reached 97.52% in 20 min from N-TiO2/C nanocrystals synthesized using N. nomurai mucus at the volume ratio of 4 : 1, which showed a remarkably strong visible light absorption, lower band gap energy and smaller electron transfer resistance. These N-TiO2/C nanocrystals also had a relatively stable crystal structure in multiple degradation reactions. The main active species including superoxide radicals (O-center dot(2)-), photogenerated holes (h(+)) and hydroxyl radicals ((OH)-O-center dot) were found to play a major role in the degradation process of RhB. This study highlights the potential high-value reapplication of harmful jellyfish mucus as a natural organic matrix in fabricating advanced materials with optimized functional properties.
DOI	10.1039/d4na00309h
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2023YFC3108204] ; National Natural Science Foundation of China[42176136] ; National Natural Science Foundation of China[42211540390] ; National Natural Science Foundation of China[42130411] ; Chinese Academy of Sciences[058GJHZ2022097FN] ; Natural Science Foundation of Shandong Province[ZR2020KE047] ; Ministry of Education Chun Hui plan project[202201136] ; Youth Innovation Promotion Association Project, Chinese Academy of Sciences ; Institute of Oceanology, Chinese Academy of Sciences
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:001265390900001
出版者	ROYAL SOC CHEMISTRY
WOS关键词	IN-SITU SYNTHESIS ; FACILE SYNTHESIS ; NITROGEN ; HETEROSTRUCTURES ; NANOCOMPOSITES ; NANOMATERIALS ; ORIGIN
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/186327
专题	海洋生态与环境科学重点实验室
通讯作者	Feng, Song; Liu, Lingchen; Lin, Jianing; Zhang, Bin
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Coll Marine Sci, Qingdao 266400, Peoples R China 3.Xihua Univ, Sch Architecture & Civil Engn, Chengdu 610039, Peoples R China 4.Shandong Univ, Inst Ecoenvironm Forens, Qingdao 266237, Peoples R China 5.Qingdao Marine Sci & Technol Ctr, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 6.Liaoning Univ, Shenyang 110036, Peoples R China 7.Bur Nat Resources Daan Dist, Zigong 643000, Peoples R China
第一作者单位	海洋生态与环境科学重点实验室
通讯作者单位	海洋生态与环境科学重点实验室
推荐引用方式 GB/T 7714	Feng, Song,Liu, Lingchen,Lin, Jianing,et al. Bio-inspired synthesis of N-doped TiO₂/C nanocrystals using jellyfish mucus with high visible-light photocatalytic efficiency[J]. NANOSCALE ADVANCES,2024,6(15):17.
APA	Feng, Song.,Liu, Lingchen.,Lin, Jianing.,Wang, Ziwei.,Gu, Jinzeng.,...&Sun, Song.(2024).Bio-inspired synthesis of N-doped TiO₂/C nanocrystals using jellyfish mucus with high visible-light photocatalytic efficiency.NANOSCALE ADVANCES,6(15),17.
MLA	Feng, Song,et al."Bio-inspired synthesis of N-doped TiO₂/C nanocrystals using jellyfish mucus with high visible-light photocatalytic efficiency".NANOSCALE ADVANCES 6.15(2024):17.