Abstract
Heterojunction system has been proved as one of the best architectures for photocatalyst owing to extending specific surface area, expanding spectral response range, and increasing photoinduced charges generation, separation, and transmission, which can provide better light absorption range and higher reaction site. In this paper, Indium Sulfide/Flexible Electrospun Carbon Nanofiber (In2S3/CNF) heterogeneous systems were synthesized by a facile one-pot hydrothermal method. The results from characterizations of SEM, TEM, XRD, Raman, and UV-visible diffuse reflectance spectroscopy displayed that flower-like In2S3 was deposited on the hair-like CNF template, forming a one-dimensional nanofibrous network heterojunction photocatalyst. And the newly prepared In2S3/CNF photocatalysts exhibit greatly enhanced photocatalytic activity compared to pure In2S3. In addition, the formation mechanism of the one-dimensional heterojunction In2S3/CNF photocatalyst is discussed and a promising approach to degrade Rhodamine B (RB) in the photocatalytic process is processed.
Highlights
Nowadays, it is a huge challenge for people to deal with the organic pollutant in the energy crisis environment [1,2,3]
The normalized temporal concentration changes (C/C0) of Rhodamine B (RB) are proportional to the normalized maximum absorbance (A/A0), which can be derived from the change in the RB absorption profile at a given time interval [25]
The X-ray diffraction (XRD) patterns of the In2S3/carbon nanofibers synthesized by electrospinning (CNF)-2 heterostructures show all the diffraction peaks assigned to hexagonal In2S3 except the peak at 25∘ which corresponds to (130) plane of orthorhombic CNF, indicating the existence of In2S3 and CNF in the In2S3/CNF-2 heterostructures
Summary
It is a huge challenge for people to deal with the organic pollutant in the energy crisis environment [1,2,3]. Photocatalytic as a novel solution has aroused great interest for people. It has been considered as one of the most effective ways for the solar energy conversion and the destruction of organic pollutant [4, 5]. The photogenerated electrons on the conduction bands (CB) of In2S3 could be transferred to CNF for the positive synergetic effect, in brief, because the formation of interface junction can improve the optical absorption property and simultaneously facilitate the separation of photoinduced electron-hole pairs. The promising applications of In2S3/CNF composites have excellent performance for the degradation of organic pollutants. This study shows a reliable method to degrade organic pollutants
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