Recycling hot-water extractions of lignocellulosic biomass in bio-refinery for synthesis of carbon nanoparticles with amplified luminescence and its application in temperature sensing

被引：15

作者：

Zhang, Longfei ^{[1
,2
]}

Lyu, Shaoyi ^{[1
,2
]}

Zhang, Qijun ^{[2
]}

Chmely, Stephen C. ^{[2
]}

Wu, Yuntao ^{[3
]}

Melcher, Chuck ^{[3
]}

Rajan, Kalavathy ^{[2
]}

Harper, David P. ^{[2
]}

Wang, Siqun ^{[2
]}

Chen, Zhilin ^{[1
]}

机构：

[1] Chinese Acad Forestry, Res Inst Wood Ind, Hunan Collaborat Innovat Ctr Effect Utilizing Woo, Beijing 100091, Peoples R China

[2] Univ Tennessee, Ctr Renewable Carbon, Knoxville, TN 37996 USA

[3] Univ Tennessee, Scintillat Mat Res Ctr, Knoxville, TN 37996 USA

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2020年 / 145卷

基金：

美国食品与农业研究所;

关键词：

Hemicellulose; Extracts; Carbon dots; Fluorescence; Recycling; ONE-STEP SYNTHESIS; QUANTUM DOTS; GREEN SYNTHESIS; PHOTOLUMINESCENCE PROPERTIES; HYDROTHERMAL CARBONIZATION; CELLULOSE NANOCRYSTALS; LIGNIN CONTENT; HIGH-YIELD; LOW-COST; GRAPHENE;

D O I：

10.1016/j.indcrop.2019.112066

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Fluorescent carbon dots (CDs) with amplified photoluminescence (PL) intensity were synthesized using recycled hot-water extraction wastes of lignocellulosic biomass according to a bio-refinery concept without carbonization of the entire biomass. The recycled waste liquid was obtained by pre-extracting biomass with pressurized hot-water under 120-180 degrees C for 30 and 60 min. CDs with controlled N-doping were obtained by a hydrothermal carbonization strategy of the pre-extraction liquid at 220 degrees C for 5 h. The main chemical component of preextraction hydrolysates was analyzed by high-performance liquid chromatography (HPLC). The effects of hydrolyzed sugars and other heteroatom-containing extracts on fluorescence of CDs were investigated by measuring the PL performance. The superior biomass-based CDs exhibited tunable quantum yields (QYs) of 6.2 %-11.8 % with hot-water extractions as precursor without carbonization destruction of the entire biomass. CDs with higher QYs could serve as an effective luminescent sensing platform for probes, temperature sensing, and anti-counterfeit applications.

引用

页数：12