Synthesis of highly porous g-C3N4 nanotubes for efficient photocatalytic degradation of sulfamethoxazole. (June 2021)

• Record Type: Journal Article
• Authors: Zhang, Huayu; Li, Wenchao; Yan, Yating; Wang, Wei; Ren, Yueping; Li, Xiufen
• Is Part Of: Materials today communications. Volume 27(2021)
• Publication Date: 2021-06
• Subjects: Graphite carbon nitride -- Supramolecular assembly -- 1, 5-naphthalene disulfonic acid -- Sulfamethoxazole; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2021.102288
• Languages: English
• ISSNs: 2352-4928

Abstract

Graphical abstract: Highlights: NA promoted the formation of macropores and mesopores in MA-CA aggregate. NA significantly enhanced the uniformity of the rod-like MA-CA aggregates. Highly porous g-C3 N4 nanotubes with large surface area were prepared. The photocatalytic degradation of sulfamethoxazole reached at 100 % in 120 min. Abstract: Pyrolysis of supramolecular assembly precursor is a promising method to prepare graphite carbon nitride (g-C3 N4 ), and the topological structure of the precursor assemblies largely determine the morphology and photoelectric properties of g-C3 N4 . In this paper, uniformly and highly porous g-C3 N4 nanotubes were synthesized under the assistance of 1, 5-naphthalene disulfonic acid (NA) through the melamine (MA)-cyanuric acid (CA) precursor self-assembly strategy. The as-synthesized g-C3 N4 nanotubes in the presence of 75 mg/L NA (MNCA-75) exhibited the highest BET surface area ( S BET ) of 100.40 m 2 /g, and the smallest band gap ( E g ) of 2.31 eV. 10 mg/L of sulfamethoxazole (SMX) was completely degraded within 120 min with the MNCA-75, and the degradation reaction conformed to pseudo-first-order kinetics. This paper reported a facile but effective method to prepare highly porous g-C3 N4 nanotubes with large surface area and excellent photocatalytic performance.