TY - JOUR
T1 - Synthesis of submicron carbon spheres by rapid hydrothermal carbonization of glucose in a microchannel reactor
AU - Xu, Ruilong
AU - Zhu, Yongquan
AU - Zhang, Lixiong
AU - Yu, Liang
N1 - Publisher Copyright:
© 2025 The Author(s)
PY - 2025
Y1 - 2025
N2 - Uniform submicron carbon spheres of 100–1000 nm sizes are needed in many, such as battery and medical fields. In this paper, a rapid hydrothermal carbonization method was developed for the preparation of uniform carbon microspheres with adjustable particle sizes in the range of 76–930 nm at 190–270 ℃ and 7 MPa in a microchannel reactor. Glucose was used as a carbon source and the synthesis time was as short as 0.5 min. The window conditions of the carbon microsphere synthesis relevant to the glucose concentration, the reaction temperature, and the residence time were investigated. The synthesized carbon spheres were also deeply studied using XRD, SEM, FTIR, Raman, TEM, and XPS. The submicron carbon spheres synthesized at 250–270 ℃ and 0.5–1 min residence times by using 15–25 wt% glucose concentrations as feed had narrow particle size distribution. Carbon spheres with similar particle sizes could be synthesized at multiple combinations of reaction temperatures, residence times, and glucose concentrations, and the sphericity and uniformity of carbon spheres can be easily adjusted. The preparation method takes a significantly shorter time and is much more efficient than the conventional hydrothermal carbonization method.
AB - Uniform submicron carbon spheres of 100–1000 nm sizes are needed in many, such as battery and medical fields. In this paper, a rapid hydrothermal carbonization method was developed for the preparation of uniform carbon microspheres with adjustable particle sizes in the range of 76–930 nm at 190–270 ℃ and 7 MPa in a microchannel reactor. Glucose was used as a carbon source and the synthesis time was as short as 0.5 min. The window conditions of the carbon microsphere synthesis relevant to the glucose concentration, the reaction temperature, and the residence time were investigated. The synthesized carbon spheres were also deeply studied using XRD, SEM, FTIR, Raman, TEM, and XPS. The submicron carbon spheres synthesized at 250–270 ℃ and 0.5–1 min residence times by using 15–25 wt% glucose concentrations as feed had narrow particle size distribution. Carbon spheres with similar particle sizes could be synthesized at multiple combinations of reaction temperatures, residence times, and glucose concentrations, and the sphericity and uniformity of carbon spheres can be easily adjusted. The preparation method takes a significantly shorter time and is much more efficient than the conventional hydrothermal carbonization method.
KW - Glucose
KW - Microchannel reactor
KW - Rapid hydrothermal carbonization
KW - Submicron carbon spheres
UR - http://www.scopus.com/inward/record.url?scp=85217465325&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2025.02.004
DO - 10.1016/j.jiec.2025.02.004
M3 - 文章
AN - SCOPUS:85217465325
SN - 1226-086X
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -