Comparative of MIL101(Cr) and nano‐MIL101(Cr) Electrode as an Electrochemical Hydrogen Peroxide Sensor

Abstract

Herein, an electrochemical sensor for the detection of H 2 O 2 based on nafion glassy carbon electrode modified with MIL101(Cr) and nano-MIL101(Cr) are developed and its electrochemical characterizations analyzed by CV and CA. In comparison with the NGCE, MIL101/NGCE and nano-MIL101/NGCE, the nano-MIL101/NGCE showed a sharp redox peak specific to H 2 O 2 was obtained in the phosphate-calibrated solution.nano-MIL101/NGCE exhibited good linear response in terms of the relationship between peak currents and concentrations as from 0 to 650 μM (R 2 = 0.99), with a low limit of detection 3.8 μM, high sensitivity 986 μA mM À 1 cm À 2 and nano-MIL101/NGCE exhibited ideal repeatability, reproducibility, stability and the interference-free perception of H 2 O 2 .

Superior Adsorption Efficiency of MIL‐101 (Cr) and Nano‐MIL‐101 (Cr) in Anionic and Cationic Dye Removal from Aqueous Solution

“…In general, peaks related to oxygen‐metal distances were observed in the range of 400–800 cm −1 , and the peak at 666 cm −1 was related to the CrO vibration [46,47] . The FTIR spectrum of synthesized MIL‐101 (Cr) and nano‐MIL‐101 (Cr) showed good agreement with other reported literature [48] …”

“…[46,47] The FTIR spectrum of synthesized MIL-101 (Cr) and nano-MIL-101 (Cr) showed good agreement with other reported literature. [48] Thermogravimetric analysis (TG) and differential thermal analysis (DTA) and derivative thermal gravimetric (DTG) analysis were performed to investigate the thermal stability of MIL-101 (Cr) and nano-MIL-101 (Cr). As shown in Figure 1c-d, an almost identical thermal trend was observed for both samples.…”