Electrocatalytic Hydrogen Production Properties of Poly(3-aminobenzoic acid) doped with Metal Organic Frameworks

Abstract

The design and development of inexpensive highly efficient electrocatalysts based on polymer organometallic composites for hydrogen production, underpins several emerging clean-energy technologies. In this work, for the first time, Poly(3-aminobenzoic acid) based metal organic framework (PABA/MOF) composite was synthesized by chemical oxidation of 3-aminobenzoic acid monomer in the presence of metal organic framework (MOF) content. Poly(3-amino benzoic acid) (PABA), MOF and PABA/MOF composite were characterized by ultraviolet visible (UV-vis) and fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (XRD), thermal gravimetric analysis (TGA), scanning electron microscope (SEM), transmission electron microscope (TEM), energy dispersive X-ray spectroscopy (EDS, EDX), selected area electron diffraction (SAED) and cyclic voltammetry (CV). Detailed structural and morphological characterizations established that PABA is wrapping MOF. Furthermore, spectroscopic analyses provided information that MOF was incorporated on the backbone of PABA as indicative of an easier path for the electron transport and plentiful active sites for the catalysis of hydrogen evolution reaction (HER) in acidic electrolyte. Experiments probing the electrochemical properties revealed that the composite was very stable and robust and had exceptionally properties. Significant HER was generated by the composite in dimethyl sulfoxide/tetrabutylammonium perchlorate (DMSO/TBAP) supporting electrolyte in the presence of hydrogen source by applying a potential to the electrode.

Effect of plasmonic au nanoparticles on the photoactivity of polyaniline/indium tin oxide electrodes for water splitting

“…This indicates the increase of IPCE efficiency to about 37%. Finally, the obtained values of IPCE, ABPE, and J ph of the present study are compared with the previously reported values of relevant or similar materials as shown in Table . The reported values in this study for IPCE and ABPE are higher than that previously obtained for the displayed materials or composites as shown in Table .…”

Sorption of Pt(IV) ions on poly(m-aminobenzoic acid) chelating polymer: Equilibrium, kinetic and thermodynamic studies

“…The PABA synthesis reactions are demonstrated in Fig. 1 [29][30][31][32]. In the synthesis of the PABA polymer, 3.428 g (25 mmol) of m-aminobenzoic acid and 11.41 g (50 mmol) of APS were used to provide the molar ratio of the monomer to the oxidant as 1:2.…”

“…In this study, poly(m-aminobenzoic acid) (PABA) chelating polymer was synthesized. PABA polymer is a conducting polymer with electron-rich nitrogen atoms and carbonyl groups [29,30]. This polymer includes primary amine (-NH 2 as end group), secondary amine (>NH) and carboxylic acid (-COOH) chelating functional groups.…”

“…Additionally, PABA polymer has the capabilities of ionic interaction/association of the protonated amine groups (-NH 3 + , >NH 2 + ) with anionic metal ion complexes such as PtCl 6 2− in the solution. The carboxyl acid groups can behave as ion exchanger group with cationic metal ions during the adsorption [28][29][30]. Poly(m-aminobenzoic acid) has been studied for different aims in earlier studies.…”

Photocatalytic properties of PbS/graphene oxide/polyaniline electrode for hydrogen generation

“…By the same manner, Ramohlola et al . prepared poly(3-aminobenzoic acid)/organic framework electrode with maximum J ph of 0.13 mA.cm −2 using H 2 SO 4 electrolyte 27 . Moreover, Jin et al .…”