Citation: Peipei DING, Jingying DUAN, Haoran XU, Xinru FANG, Xingyu LIU, Juntao YAN, Chunlei WANG. Preparation and adsorption properties of poplar catkin-derived porous carbon by ethanol solvothermal method[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(6): 1203-1214. doi: 10.11862/CJIC.20250370 shu

Preparation and adsorption properties of poplar catkin-derived porous carbon by ethanol solvothermal method

Hubei Key Laboratory of Agricultural Waste Resource Utilization, College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China

Corresponding author: Chunlei WANG, wangchunlei_best@163.com
Received Date: 12 December 2025
Revised Date: 19 April 2026

Figures(13)

Poplar catkins (PC) were used as raw material, and an ethanol solvothermal method was employed for pretreatment to high-surface-area poplar catkin-derived porous carbon (DPCC). The adsorption performance and kinetics of DPCC towards dye molecules were systematically evaluated. Pretreatment parameters were optimized using single-factor experiments, establishing the optimal conditions: a liquid-to-solid ratio of 17 mL·g^-1 and a thermal treatment at 200 ℃ for 2 h. Under these optimized conditions, the specific surface area of DPCC-10 was significantly enhanced to 518 m²·g^-1. Comprehensive characterization employing Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscope (SEM), and N₂ adsorption-desorption test confirmed that the pretreatment effectively removed lignin components, hemicellulose, etc., and induced the formation of a hierarchical porous structure. Adsorption experiments showed that the optimized DPCC-10 exhibited a maximum adsorption capacity of 385.71 mg·g^-1 for methylene blue (MB), surpassing most reported values for biomass-derived adsorbents. The adsorption process of dyes by DPCC-10 follows the pseudo-second-order kinetic equation, indicating that the adsorption is primarily a chemisorption-dominated mechanism. The cyclic stability test indicated that after four adsorption-desorption cycles, the adsorption capacity for MB still remained 92.01% of the initial value, indicating the excellent regenerability of the material.
- poplar catkin,
- biomass porous carbon,
- adsorption,
- kinetics
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