Using density functional theory calculations, we have investigated the electronic band structure, optical and photocatalytic response of BSe, M2CO2 (M = Ti, Zr, Hf) monolayers and their corresponding BSe–M2CO2 (M = Ti, Zr, Hf) van der Waals heterostructures.

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A combination of scanning electron miscroscopy and energy dispersive X-ray spectroscopy (SEM-EDX) was found to be a very effective tool for characterizing the heavy metal load of Great Lakes phytoflagellates, diatoms, and green algae, and for the surveillance of heavy metal pollution. The sensitivity and short generation time of nannoplankton and the speed of the described technique makes this procedure a useful aid in contaminants research.Key words: scanning electron microscopy, X-ray microanalysis, nannoplankton, heavy metals, algae, phytoflagellates, Great Lakes, contaminants, bioaccumulation

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Correction for ‘Revealing the electronic, optical and photocatalytic properties of PN-M2CO2 (P = Al, Ga; M = Ti, Zr, Hf) heterostructures’ by M. Munawar et al., Nanoscale Adv., 2023, https://doi.org/10.1039/d3na00017f.