文献类型：期刊文献

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

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]

第一作者：Zhang, Longfei;张龙飞

通信作者：Chen, ZL[1];Wang, SQ[2]

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

年份：2020

卷号：145

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20200608124352);Scopus(收录号：2-s2.0-85078733877);WOS:【SCI-EXPANDED(收录号:WOS:000518865400101)】；

基金：The authors wish to thank the Fundamental Research Funds of Chinese Academy of Forestry for Wood Composites and Chemical Utilization Program (CAFYBB2017ZX003), Sungrant Regional Program of South Dakota State University (A18-4000659) and USDA National Institute of Food and Agriculture (Hatch project 1012359) for experimental support. We also appreciate China Scholarship Council for financial support.

语种：英文

外文关键词：Hemicellulose; Extracts; Carbon dots; Fluorescence; Recycling

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.