TY  - EJOU
AU  - He, Ju 
AU  - Zhao, Peiwen 
AU  - Han, Dongyang 
AU  - Lv, Kexin 
AU  - Rao, Jiuping 
AU  - Ye, Xinqiang 
AU  - Ruan, Guodong 
AU  - Guo, Fei 
AU  - Fan, Mizi 
AU  - Zhao, Weigang 

TI  - Engineering Microporous Bamboo-Derived Carbons via Alkaline Activation for Formaldehyde Adsorption in Building Environments
T2  - Journal of Renewable Materials

PY  - 2026
VL  - 14
IS  - 4
SN  - 2164-6341

AB  - This study presents a systematic evaluation of bamboo-derived activated carbons (ACs) prepared using three alkaline activating agents-KOH, KHCO<sub>3</sub>, and K<sub>2</sub>CO<sub>3</sub>-for efficient formaldehyde adsorption. The pore structures of the resulting ACs were modulated by varying the alkali-to-carbon (A/C) ratio from 1:1 to 4:1, and the effects on microstructure and adsorption performance were thoroughly investigated. Among all samples, AC-MB@KOH(3) demonstrated superior performance, featuring a high specific surface area of 2141.77 m<sup>2</sup>/g and a removal efficiency of 90%, attributed to its rich microporous texture and well-developed hierarchical porosity. Comparative analysis revealed that the activation strength and decomposition behavior of different alkaline agents critically influenced pore formation dynamics and gas diffusion pathways. Correlation analysis indicated a strong linear relationship between formaldehyde removal efficiency and micropore volume (R<sup>2</sup> = 0.87), emphasizing the pivotal role of micropores in gas molecule capture. These findings underscore the advantages of strong alkaline activation and offer a theoretical foundation for designing high-efficiency, biomass-derived porous adsorbents for indoor air purification applications.
KW  - Bamboo-based activated carbon; alkaline activation; formaldehyde removal; microporous structure; indoor air purification

DO  - 10.32604/jrm.2026.02026-0012