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

Abstract

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⁺

CLC Number:

TQ35

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.

Figures/Tables 7

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References 21

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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

[1]	GAO Xuexia, ZHOU Xi, LIU Meihong, WANG Chunpeng, CHU Fuxiang. Preparation of Lignin Based Carbon Quantum Dots and Their Application in Fe³⁺ Detection [J]. Chemistry and Industry of Forest Products, 2018, 38(5): 30-36.
[2]	REN Ling-bing;CAO Qing;XIE Xiao-ling. Hydrolysis Kinetics of Microcrystalline Cellulose Catalyzed by Fe³⁺ and Dilute Hydrochloric Acid [J]. , 2012, 32(4): 117-122.

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

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