NaYF₄:Yb³⁺(58%),Tm³⁺@NaYF₄@Au nanocomposite for 4-nitrophenol ultrasensitive quantitative detection and highly efficient catalytic reduction

Abstract

4-nitrophenol (4-NP) is one of the main toxic water pollution substances. Most 4-NP fluorescence detection methods are based on the change of fluorescence intensity of single emission peak, which has...

Remarkably and stable catalytic activity in reduction of 4-nitrophenol by sodium sesquicarbonate-supporting Fe2O3@Pt

“…However, sodium sesquicarbonate-supporting Fe 2 O 3 @Pt with MES showed the best catalytic performance due to the reduction protection characteristics of MES. 32,40 The rate constants k app was calculated to be 13.98 × 10 −3 s −1 from the slope of the plots (Fig. S7 †).…”

Controllable structural and optical properties of NaYF4:Tm, Yb microparticles by Yb3+ doping for anti-counterfeiting

“…NaYF 4 :Tm, Yb upconversion microparticles (UCMPs) are constituted by NaYF 4 host and a pair of Tm and Yb ions, typically Yb 3+ ions acting as a sensitizer, and Tm 3+ ions playing the role of emitters. This material exhibits outstanding applications such as photodetectors in NIR region, 10 photocatalyst, [11][12][13] biosensors, [14][15][16] and anticounterfeit printing. 3,17 In addition, surface modication with various ligands has been used to improve the dispersibility and colloidal stability of NaYF 4 UCMPs and the conjugation of UCMPs with biomolecules, polymers, etc.…”