Electrochemical Controllable Synthesis of Bismuth Hexacyanoferrate(II) Nanoplates and Its Application in Electrocatalysis

Abstract

A facile electrochemical approach was developed for the controllable synthesis of bismuth hexacyanoferrate(II) (BiHCF(II)) nanoplates. The composition, morphology, and structure of the as-prepared BiHCF(II) nanoplates were characterized by the techniques such as infrared spectrum, thermogravimetry, inductively coupled plasma mass spectroscopy, X-ray photoelectron spectroscopy, energy-dispersive X-ray spectrum, powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and selected area electron diffraction. The formula of the prepared BiHCF(II) nanoplates could be assigned to KBi[Fe(CN)6]·xH2O. It was observed that the nanoplates and their flowerlike aggregations could be obtained in the electrolytes containing different concentration of HNO3. The nanoplates were prepared at the potential for 0.2 V (versus SCE) and could be further grown to a good single-crystalline hexagonal microstructure at 0.6 V. To the best of our knowledge, the structures have not been reported before. The modified Au electrode by the BiHCF(II) nanoplates showed good electrochemical properties, especially with a stable anodic response over the pH range from 2.0 to 11.0. Also, the electrode possesses prominent electrocatalytic activity toward the reduction of hydrogen peroxide.

A novel cobalt hexacyanoferrate nanocomposite on CNT scaffold by seed medium and application for biosensor

“…The electrochemical response increased with increasing amount of CNTs, while too much amount of CNTs will decrease the stability of the sensing surface. 10 L Ionic strength and ion types were not taken into account, the solution of 0.1 M NaH 2 PO 4 is acidic which is quite agreeable with the general opinion that the redox activities of MHCFs prefer in acid media [45].…”

Improving generation of H2O2 and ·OH at bismuth hexacyanoferrate/graphene/carbon fibers-based gas diffusion electrode for degradation of dye wastewaters in photo-electro-Fenton process

“…(3) BiHCF could be electrodeposited at the surface of GN/CFs in 30 mL of mixture solution including 1 mM of Bi(NO 3 ) 3 , 1 mM of K 3 [Fe(CN) 6 ], 0.01 M of HNO 3 and 0.1 M of KNO 3 , using cycle voltammetric (CV) at a potential range of 0-1 V, scan rate of 50 mVs −1 for 20 cycles (BiHCF/GN/CFs). The scheme could be seen in reaction ( 5) and ( 6) (Zheng et al 2007;Feng et al 2008).…”

“…103) and ( 203) plane of BiHCF, respectively. The average size was calculated to be 26.2 nm by the Debye-Scherrer equation (Zheng et al 2007;Feng et al 2008). All the peaks still could be observed at GO/CFs (c).…”

“…GN/CFs (d) displays two new bands at 1549 cm −1 (stretching vibration of N-H) and 1384 cm −1 (C-N stretching vibration) with the decrease in oxygen-containing groups (Peng et al 2018). BiHCF/GN/CFs (e) shows three peaks at 2040 cm −1 (CN asymmetric stretching vibration of ferrocyanide), 588 cm −1 (Bi-C stretching vibration), and 1384 cm −1 (C-N stretching vibration) (Peng et al 2018;Zheng et al 2007;Feng et al 2008). Therefore, the formation of BiHCF/GN/CFs could be verified based on the above characterization data.…”

Estudio de análogos de azul de Prusia como materiales para baterías de intercalación de ion potasio: efecto del metal externo sobre el comportamiento electroquímico

“…Los resultados de FTIR muestran que las diferentes sustituciones iónicas no provocan desplazamientos apreciables sobre las señales para los dos modos de vibración. Tal comportamiento difiere al presentado por otros PBAs, los cuales incluso presentan menores porcentajes de sustitución que el empleado en este trabajo [80,123] En los espectros de infrarrojo de las Figuras 38a-b se reportaron las vibraciones del enlace para O-H en 1616 cm -1 y 3414 cm -1 , las cuales están relacionadas con el agua superficial e intersticial, como ha sido sugerido [124][125][126][127]. La eliminación de estos tipos de agua ocurre a una temperatura cercana a los 200 °C, como se reporta en las curvas TGA de la Figura 38c [69,[128][129][130][131].…”