废弃香烟过滤嘴基氮掺杂多孔炭的制备及吸附性能研究

doi:10.19964/j.issn.1006-4990.2024-0437

摘要/Abstract

摘要：

废弃香烟过滤嘴（UCF）的处理和水中亚甲基蓝（MB）的去除对生态环境保护具有重要的实践意义。以UCF为原料，在氨气气氛下通过一步热解制备出不同温度（600、700、800 ℃）的氮掺杂多孔炭材料（NCPC），采用氮气吸附/脱附仪、元素分析仪、X 射线衍射仪（XRD）和拉曼光谱仪（Raman）等分析所制样品的组成和结构等特性，并探讨其对水中MB的吸附行为。研究了NCPC加入量、溶液初始浓度、溶液pH、吸附温度和吸附时间等因素对MB吸附效果的影响规律。结果表明：在氨气气氛下800 ℃热解2 h，可得到产率为13.38%、N掺杂量为5.99%（质量分数）、比表面积为852.9 m²/g、总孔孔容为0.610 cm³/g、微孔孔容占38.2%、平均孔径为5.10 nm的氮掺杂多孔炭材料。在吸附温度为25 ℃、pH为10.4、吸附时间为300 min、溶液初始质量浓度为200 mg/L、多孔炭用量为0.2 g/L的条件下，NCPC-800对MB的吸附量达到了787.1 mg/g。吸附过程符合准二级动力学模型和颗粒内扩散模型。该研究为UCF的高值化利用和多孔炭吸附处理MB废水提供了参考依据，达到以废治废的目的。

关键词: 废弃香烟过滤嘴, 氮掺杂多孔炭, 亚甲基蓝, 吸附

Abstract:

The treatment of used cigarette filters（UCF） and the removal of methylene blue（MB） from water have important practical significance for ecological environment protection.Nitrogen-doped porous carbon materials（NCPC） derived from UCF with different temperature gradients（600，700，800 ℃） were prepared by one-step pyrolysis in ammonia atmosphere.Nitrogen adsorption-desorption measurements，elemental analysis，X-ray diffraction（XRD） and Raman spectrum analysis were used to characterize the microstructure and phase analysis of NCPC，and the adsorption characteristics of MB via NCPC were studied.Using NCPC as adsorbent，the effects of NCPC dosage，initial concentration，pH value，reaction temperature and contact time on the adsorption performance of methylene blue were investigated in detail.The results showed that the NCPC was prepared by pyrolysing at 800 ℃ for 2 h in ammonia atmosphere with the yield of 13.38%，the N doping amount of 5.99%，a specific surface area of 852.9 m²/g，total pore volume of 0.610 cm³/g，micropore volume accounts for 38.2% and average pore size of 5.10 nm.The adsorption capacity of NCPC-800 for methylene blue reached 787.1 mg/g at the reaction temperature of 25 ℃，pH of 10.4，adsorption time of 300 min，initial concentration of MB of 200 mg/L，NCPC dosage of 0.2 g/L.The adsorption process of was conformed to the pseudo second order kinetic model and intraparticle diffusion model.This study provided reference for the high-value utilization of UCF and the removal of MB from wastewater by porous carbon，and achieved the purpose of treating waste with waste.

Key words: used cigarette filters, nitrogen-doped porous carbon, methylene blue, adsorption

中图分类号:

TQ127.11

赵雪卿, 王中慧, 王永伟, 王志雨, 霍晓东. 废弃香烟过滤嘴基氮掺杂多孔炭的制备及吸附性能研究[J]. 无机盐工业, 2025, 57(7): 110-119.

ZHAO Xueqing, WANG Zhonghui, WANG Yongwei, WANG Zhiyu, HUO Xiaodong. Study on preparation of nitrogen-doped porous carbon materials derived from used cigarette filters and their adsorption properties[J]. Inorganic Chemicals Industry, 2025, 57(7): 110-119.

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样品	w（C）/%	w（H）/%	w（N）/%	w（O）/%^a	H/C^b
NCPC-600	85.17	2.06	5.34	7.43	0.29
NCPC-700	86.56	1.32	5.78	6.34	0.18
NCPC-800	89.71	0.76	5.99	3.54	0.10
CPC-800	88.85	0.76	0.28	10.11	0.10

样品	比表面积/ （m²·g^-1）	微孔比表面积/ （m²·g^-1）	总孔容/ （cm³·g^-1）	微孔孔容/ （cm³·g^-1）	微孔孔容/ 总孔容	平均孔径/ nm
CPC-700	504.9	334.4	0.303	0.137	0.452	3.46
CPC-800	530.6	354.9	0.311	0.145	0.466	3.43
NCPC-600	502.5	338.7	0.424	0.185	0.436	3.81
NCPC-700	569.5	356.2	0.546	0.220	0.403	4.26
NCPC-800	852.9	572.7	0.610	0.233	0.382	5.10

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