氧化改性木质素磺酸钠-石墨烯复合量子点的制备及性能

doi:10.3969/j.issn.0253-2417.2019.01.004

林产化学与工业 ›› 2019, Vol. 39 ›› Issue (1): 29-34.doi: 10.3969/j.issn.0253-2417.2019.01.004

氧化改性木质素磺酸钠-石墨烯复合量子点的制备及性能

许利娜¹,杨小华¹,丁海阳¹,李梅¹,夏建陵^1,^2,*()

1. 中国林业科学研究院林产化学工业研究所；生物质化学利用国家工程实验室；国家林业局林产化学工程重点开放性实验室；江苏省生物质能源与材料重点实验室，江苏南京 210042
2. 南京林业大学江苏省林业资源高效加工利用协同创新中心，江苏南京 210037

收稿日期:2018-09-20 出版日期:2019-02-25 发布日期:2019-03-14
通讯作者: 夏建陵 E-mail:xiajianling@126.com
作者简介:许利娜(1987—),女,河南平顶山人，助理研究员,硕士，主要从事生物基材料的研究工作
基金资助:
中央级公益性科研院所基本科研业务费专项资金(CAFYBB2017QA016)

Synthesis and Properties of Oxidative Modified Satium Lignosulfonate/Graphene Quantum Dots Composites

Lina XU¹,Xiaohua YANG¹,Haiyang DING¹,Mei LI¹,Jianling XIA^1,^2,*()

1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material, Jiangsu Procince, Nanjing 210042, China
2. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China

Received:2018-09-20 Online:2019-02-25 Published:2019-03-14
Contact: Jianling XIA E-mail:xiajianling@126.com
Supported by:
中央级公益性科研院所基本科研业务费专项资金(CAFYBB2017QA016)

摘要/Abstract

摘要：

以造纸废料木质素磺酸钠和柠檬酸为原料制备了氧化改性木质素磺酸钠/石墨烯复合量子点(HSL/GQDs)，利用紫外可见光谱、荧光光谱、红外光谱和透射电镜等研究了复合量子点的荧光性能、结构及其对金属离子的选择性吸附性能，并考察了复合量子点结构与吸附性能之间的关系。研究表明：HSL/GQDs的荧光强度(F₀)是单纯的石墨烯量子点的2倍多，对Fe³⁺有较好的荧光响应信号，可用于对Fe³⁺的检测。在10~500 μmol/L范围内，加入Fe³⁺以后的该荧光探针的荧光猝灭强度(F)与Fe³⁺的浓度有良好的线性关系，线性方程为：F/F₀=0.85112-0.00111C(Fe³⁺)，线性系数为0.99。

关键词: 氧化改性木质素磺酸钠, 石墨烯量子点, 荧光探针, Fe³⁺

Abstract:

Oxidative modified sodium lignosulfonate/graphene quantum dots (HSL/GQDs) composites was synthesized using by products of the sulfite-pulping procedure (sodium lignosulfonate) and citric acid.Fluorescence spectroscopy, UV-vis spectra, and TEM were used to investigate the optical properties, structure and ions detection of the prepared HSL/GQDs.The HSL/GQDs exhibited strong fluorescence, which present two times high intensity(F₀)than that of the free GQDs. The experimental results showed that HSL/GQDs could detect Fe³⁺ with high sensitivity and specificity according to the change of the fluorescence intensity. The Fe³⁺ concentration and the fluorescent quenching intensity of prepared HSL/GQD safter adding Fe³⁺ presented a good linearity in range of 10 -500 μmol/L, with alinear equation of F/F₀=0.85112-0.00111C(Fe³⁺)(R²=0.99).

Key words: oxidative modification lignin, graphene quantum dots, fluorescent sensor, Fe³⁺

中图分类号:

TQ35

许利娜,杨小华,丁海阳,李梅,夏建陵. 氧化改性木质素磺酸钠-石墨烯复合量子点的制备及性能[J]. 林产化学与工业, 2019, 39(1): 29-34.

Lina XU,Xiaohua YANG,Haiyang DING,Mei LI,Jianling XIA. Synthesis and Properties of Oxidative Modified Satium Lignosulfonate/Graphene Quantum Dots Composites[J]. Chemistry and Industry of Forest Products, 2019, 39(1): 29-34.

图/表 7

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金属离子ions	F/F₀
—	1
Ag⁺	0.98
Al³⁺	1.00
Ca²⁺	0.97
Cr³⁺	0.94
Cu²⁺	1.00
Fe³⁺	0.68
Ni²⁺	0.98
Mg²⁺	0.97
Mn²⁺	1.10
Zn²	1.27
Co²⁺	1.21

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氧化改性木质素磺酸钠-石墨烯复合量子点的制备及性能

Synthesis and Properties of Oxidative Modified Satium Lignosulfonate/Graphene Quantum Dots Composites

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