Study on the fluorescence properties of lignocellulosic prehydrolysis liquor

  • Honglei ChenEmail author
  • Xin Zhao
  • Shunli Li
  • Xingxiang Ji
  • Yu Liu
  • Fangong Kong


The fluorescence properties were first probed for wood prehydrolysis liquor (PHL) in the present study. Besides fluorescence concentration quenching and pH effects, the excitation wavelength-dependent photoluminescence properties were also observed at excitation from 360 to 430 nm. In order to explore the inducement of visible fluorescence, the fluorescence analysis was performed for acid-soluble lignin; X-ray diffraction and Raman spectroscopy were performed for the PHL solids and revealed that graphitic carbon in the form of carbon nanodots (CNDs) exists in lignocellulosic PHL. Transmission electron microscopy and atomic force microscopic analyses further characterized the morphology of the graphitic carbon. These CNDs have an average diameter of 5.04 ± 0.89 nm and two forms of lattice spacing of 0.23 nm and 0.34 nm; the average height is 1.73 ± 0.71 nm. The discovery of the fluorescence and CNDs in lignocellulosic PHL will greatly widen its promising applications.



The present work was financially supported by the National Natural Science Foundation of China (Grant Nos. 31600472, 31800499, 31670590, 31770626, 31570566), the Natural Science Foundation of Shandong (ZR2017LEM009), the Taishan Scholars Program, and the Key Research and Development Program of Shandong Province (No. 2017GSF17130).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Honglei Chen
    • 1
    Email author
  • Xin Zhao
    • 1
  • Shunli Li
    • 1
  • Xingxiang Ji
    • 1
  • Yu Liu
    • 1
  • Fangong Kong
    • 1
  1. 1.State Key Laboratory of Biobased Material and Green PapermakingQilu University of Technology (Shandong Academy of Sciences)JinanPeople’s Republic of China

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