Microwave Hydrothermal Synthesis of Terbium Ions Complexed with Porous Graphene for Effective Absorbent for Organic Dye

Abstract

A luminescent terbium ions/reduced graphene oxide complex (Tb-RGO) was successfully and rapidly synthesized by the microwave hydrothermal reaction via the interactions between terbium ions and the active oxygen functional groups of graphene oxide. The as-prepared material was porous stacked by multilayer graphene in all directions. Thus, the resulting product owed the high specific surface area, high adsorption capacity and ultra-fast adsorption rate. Combined with the characteristic photoluminescence derived from terbium ions, the material has potential applications in biosensing and environmental protection.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-017-1962-7) contains supplementary material, which is available to authorized users.

Role of Ce in Manipulating the Photoluminescence of Tb Doped Y2Zr2O7

“…63 However, after introducing Ce into this system, i.e., in YZO:Tb (2 mol %),Ce (2 mol %), the Tb 4d peak at 149.2 eV disappears, and another peak (157.7 eV) appears within the Y 3d peak, corresponding to the presence of Tb 4+ ions. 64,65 The fact that the YZO:Tb (2 mol %),Ce (2 mol %) still results in emission suggests that Tb 3+ is still present in the sample; however, the lack of a Tb 3+ signature in the XPS can be attributed to the concentration being below the instrument detection limit. Therefore, the change in Tb 4d peak reveals that the incorporation of Ce into the YZO host drives the Tb 3+ to the nonluminescent Tb 4+ state, reducing the luminescent centers in the host.…”

The preparation of a three dimensional terbium doped reduced graphene oxide aerogel with photoluminescence and paramagnetic properties

“…S5 † ) show a broad excitation region ranging from 250–400 nm, which is different from rGO-0 which is mainly excited in discrete peaks. 16 The band gap of graphene measured by UV-vis absorption spectroscopy was used to confirm the variation in PLE. In Fig.…”

“…The compounds (rGO/europium and rGO/Tb) had excellent luminescence properties and quenching abilities with rhodamine-B in our previous work. 15,16 Meanwhile, terbium (Tb) plays a crucial role among the lanthanum elements, owing to its characteristic green emission and paramagnetism at room temperature. Thus, Tb can be exploited to tune magnetism and determine binding sites by measuring its optical behavior.…”

Preparation of Fe 3 O 4 @C submicron rods for adsorption of methylene blue and fast separation from water

“…Most of the organic dyes are toxic and carcinogenic, and unfortunately, most of them are hardly degradable [1–3]. Up to now, many technologies have been developed for the treatment of the dyestuffs wastewater, such as photocatalytic degradation [4, 5], microbiological degradation [6], chemical oxidation [7] and adsorption [8–10]. Among these methods, the adsorption technique appears to be one of the most effective selections due to its low cost and simple operation.…”