Eco-friendly and facile one-step synthesis of a three dimensional net-like magnetic mesoporous carbon derived from wastepaper as a renewable adsorbent. Issue 22 (23rd April 2019)

• Record Type: Journal Article
• Authors: Yu, Jing; Zhang, Donghuan; Zhu, Shukui; Chen, Pin; Zhu, Gang-Tian; Jiang, Xiangtao; Di, Siyuan
• Is Part Of: RSC advances. Volume 9:Issue 22(2019)
• Page Start: 12419
• Page End: 12427
• Publication Date: 2019-04-23
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c9ra01332f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Millions of tons of paper and its derivatives are annually wasted without being recycled and reused. Abstract : Millions of tons of paper and its derivatives are annually wasted without being recycled and reused. To promote the comprehensive utilization of resources and eco-friendly preparation, waste filter paper, printer paper, and napkins were chosen as carbon sources to one-step synthesize three types of three dimensional (3D) net-like magnetic mesoporous carbon (MMC) by an eco-friendly and low-cost method. These mesoporous (3.90–7.68 nm) composites have a high specific surface area (287–423 m 2 g −1 ), well-developed porosity (0.24–0.74 cm 3 g −1 ) and abundant oxygen-containing functional groups. Compared to the other two composites, the adsorbent derived from filter paper showed the highest adsorption capacity towards methylene blue (MB) ( q max = 332.03 mg g −1 ) and rhodamine B (RhB) ( q max = 389.59 mg g −1 ) with a high adsorption rate (<5 min). According to the effect of pH value on adsorption capacity, and combining the analysis of Fourier transform infrared spectrometry and X-ray photoelectron spectroscopy, the main adsorption mechanisms can be summarized as hydrogen bonds, electrostatic interactions, and π–π interaction. Besides, the occurrence of redox reactions between Fe 2+ /Fe 0 and dye cannot be ignored. Finally, experiments on reusability were performed. They showed that the 3D net-like MMC could be easily regenerated and still maintained a removal efficiency of above 80% for RhB and 90% for MB after five cycles.