Solvent-free catalytic synthesis and optical properties of super-hard phase ultrafine carbon nitride nanowires with abundant surface active sites. Issue 28 (29th February 2016)

• Record Type: Journal Article
• Authors: Wang, Jilin; Zhang, Lulu; Long, Fei; Wang, Weimin; Gu, Yunle; Mo, Shuyi; Zou, Zhengguang; Fu, Zhengyi
• Is Part Of: RSC advances. Volume 6:Issue 28(2016)
• Page Start: 23272
• Page End: 23278
• Publication Date: 2016-02-29
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra02475k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Hot-melt reduction solvent-free catalytic synthesis and optical property of ultrafine α/β-C3 N4 nanowires with abundant surface active sites. Abstract : High-quality ultrafine α/β-carbon nitride (α/β-C3 N4 ) nanowires have been fabricated through a novel hot melt reduction synthetic method using polyvinylchloride ([–C2 H3 Cl–] n ), ammonium chloride (NH4 Cl) and ferric oxide (Fe2 O3 ) as raw materials. The purity, structure, morphology, crystallinity and surface state of the as-prepared samples were investigated by FSEM, TEM, HRTEM, SAED, XRD, EDX, FTIR and XPS. The nanowires presented good crystallinity with a length range of 1–4 μm and an average diameter of about 10 nm. Every nanowire possessed a high specific surface area and rough surface with abundant exposed atoms/prominences, indicating that the surface structure will facilitate further surface modification, functionalization and related applications. In addition, UV-vis diffuse reflectance and the corresponding photoluminescence (PL) spectra indicated that the nanowires have a wide band gap (4.38 eV) and obvious ultraviolet luminescence properties at the maximum emission peak of about 340 nm. A catalytic reaction mechanism and the growth model were also proposed to explain the formation process of the C3 N4 nanowires.