Efficient photocatalytic degradation of bisphenol A by green synthesized CuO decorated nickel hexacyanoferrate nanocomposite

Abstract

Bisphenol A (BPA), a chemical additive in polycarbonate plastics and epoxy resins, is suspected to be an endocrine‐disrupter. Extensive use and irregular treating methods have led to frequent detection of BPA in wastewater, raising demand for their removal by efficient nanomaterials‐based technique. Nanocomposite CuO@NiHCF was synthesized via green method using Citrus aurantium peel extract. Crystalline structure (particle size <50 nm) of CuO@NiHCF was analysed by microscopic and spectroscopic analysis. This nanocomposite showed 97% degradation of BPA (50 mg L−1) at neutral pH in sunlight. Moreover, improved particle stability (zeta potential: −56.2 mV; 2.0 eV) and high surface area, pore volume (81 m2g−1, 13.9 nm) resulted from synergism of NiHCF (−26.3 mV; 2.4 eV), and CuO (−11.5 mV; 1.9 eV) led to efficient photodegradation of BPA. Degradation of BPA was found photo‐adsorptive. Moreover, degradation was carried out by OH radicals based with ring‐opening mechanisms by GC–MS. High efficiency and sustainability of CuO@NiHCF were revealed by its multiple reusability (n = 10), leading to a promising and sustainable photocatalyst.

Sunlight light-driven degradation of anthracene and naphthalene on robust Cu2+doped ZnO nanoparticles from simulated rainwater: optimization factors, kinetics, and reusability

“…Similar results were also reported in the literature for the compounds CuO-NiHCF, Mn-CuO, ZnS-ZnO and Ag-ZnO. 39,[41][42][43]…”

“…Environmental water reservoirs consist of naturally organic materials, such as humic acid (HA), with quantities ranging from 0.1 to 20 mg L −1 . 27,42 It has been discovered that HA interacts with water treatment procedures to variable degrees; therefore, it is interesting to study the probable impact of HA on ANT breakdown by Cu@ZnO. The ANT degradation experiment used (2 mL; 0.1 and 1 M) HA to test the influence on the degradation of 10 mgL −1 ANT by Cu@ZnO.…”

“…The ndings show that a sufficient number of nanoparticles focus on band-gap events that occur above the surface and excite charge carriers due to the adequate availability of energy in daylight. 39,42 Furthermore, decor with natural light exhibited the greatest pollutant degradation via energy transfer with a minimal band gap that targeted the perception area. Both contaminants are successfully removed from water by the Cu@ZnO nanocomposite and are degraded in the sun by photocatalysis.…”

Green synthesis of silver‐doped metal hexacyanoferrates nanostructures for efficient cleanup of endocrine‐disrupting pesticides

“…Through literature surveys, it was observed that Ag doped nanocomposites such as Ag@ZnONSt, 19 Ag/LaTiO 3, 20 CuO/TiO 2 /PANI, 21 Ag‐CuS, 22 Ag/ZnO, 23 and graphene/Ag‐doped TiO 2 24 are synthesized for the removal of selected pesticides shown Table 2. Because of environmental concerns and the implication of green chemistry, there is the trend for the synthesis of doped nanoparticles using plant feedstock (plants, roots, flowers, leaves) which contain several types of phytochemicals such as polyphenols, cellulose, saponins, sugars, flavonoids, and amino acids 25–31 . Therefore, it was envisioned to synthesize silver‐doped metal hexacyanoferrates (Ag@MHCFs) via the green route.…”

“…Because of environmental concerns and the implication of green chemistry, there is the trend for the synthesis of doped nanoparticles using plant feedstock (plants, roots, flowers, leaves) which contain several types of phytochemicals such as polyphenols, cellulose, saponins, sugars, flavonoids, and amino acids. [25][26][27][28][29][30][31] Therefore, it was envisioned to synthesize silver-doped metal hexacyanoferrates (Ag@MHCFs) via the green route. Numerous publications indicated that MHCFs complexes have superior adsorption and catalytic properties because of their inherent features, including electrochemical and spectral properties.…”