Application of Chemically Exfoliated Boron Nitride Nanosheets Doped with Co to Remove Organic Pollutants Rapidly from Textile Water

Abstract

Two-dimensional layered materials doped with transition metals exhibit enhanced magnetization and improved catalytic stability during water treatment leading to potential environmental applications across several industrial sectors. In the present study, cobalt (Co)-doped boron nitride nanosheets (BN-NS) were explored for such an application. Chemical exfoliation process was used to exfoliate BN-NS and the hydrothermal route was adopted to incorporate Co dopant in various concentrations (e.g., 2.5, 5, 7.5, and 10 wt%). X-ray diffraction (XRD) study indicated that crystallinity improved upon doping with the formation of a hexagonal phase of the synthesized material. Selected area electron diffraction (SAED) confirmed enhanced crystallinity, which corroborates XRD results. Interlayer spacing was evaluated through a high-resolution transmission electron microscope (HR-TEM) equipped with Gatan digital micrograph software. Compositional and functional group analysis was undertaken with energy dispersive Xray (EDS) and Fourier transform infrared (FTIR) spectroscopy, respectively. Field emission scanning electron microscope (FE-SEM) and HR-TEM were utilized to probe surface morphologies of prepared samples. Bonding modes in the sample were identified through Raman analysis. Optical properties were examined using UV-vis spectroscopy. Photoluminescence spectra were acquired to estimate the separation and recombination of excitons. Magnetic properties were studied by means of hysteresis loop acquired using VSM measurements. Methylene blue dye was degraded with as-prepared host and doped nanosheets used as catalysts and investigated through absorption spectra ranging from 250 to 800 nm. The experimental results of this study indicate that Co-doped BN-NS showed enhanced magnetic properties and can be used to degrade dyes present as an effluent in industrial wastewater.

Dye degradation performance, bactericidal behavior and molecular docking analysis of Cu-doped TiO2 nanoparticles

“…10,17,19 In comparison with noble metals (i.e., Au, Pd, and Ag), Cu has been considered as a highly competent co-catalyst of titania due to its ease of availability, and cost-effectiveness in that it is 100 and 6000 times cheaper than Ag and gold, respectively. 10,13,20,21 The photoenhancement of Cu compared to other dopants was determined in the following order: Cu-TiO 2 > Au-TiO 2 > Ag-TiO 2 > TiO 2 . 22 It is considered favorable to dope Cu ions in pristine TiO 2 crystal lattice since ionic radius of Cu 2+ is 0.087 nm, which is slightly larger than Ti 4+ radius of 0.074 nm.…”

Development of Multi-Concentration Ag:Cu Bimetallic Nanoparticles as a Promising Bactericidal for Antibiotic-Resistant Bacteria as Per Molecular Docking Exploration

“…K shows absorption index, and E g is equal to band gap energy in eV. The value of "n" is related to electronic transition type of band gap [13,26,68,69]. The band gap of prepared bimetallic products was calculated and found to be 3.2, 2.9, 2.7, and 2.6 eV, as demonstrated in Fig.…”

Comparative Study of Selenides and Tellurides of Transition Metals (Nb and Ta) with Respect to its Catalytic, Antimicrobial, and Molecular Docking Performance

“…The bright reflection spots in several concentric circles in SAED patterns (b and c) indicated that synthesized nanocomposites were crystalline while weak reflection observed among these bright rings revealed the presence of an amorphous compound. Moreover, the absence of bright spots in SAED rings of (d) and few spots in (e) depicts the amorphous and slight crystalline nature of these nanostructures, respectively [ 63 , 64 ]. For further insight into the crystal structure, HRTEM of C1 and C2 was carried out and outcomes are presented in Fig.…”