Correlation of zeta potential and contact angle of oxygen and fluorine terminated nitrogen incorporated ultrananocrystalline diamond (N UNCD) thin films

The surface chemistry of nitrogen incorporated ultrananocrystalline diamond (N-UNCD) films was altered by plasma treatment utilizing oxygen and fluorine plasma chemistries; the modified N-UNCD surfaces were characterized using contact angle and zeta potential measurements to give a more complete understanding of the interactions between the solid surface and the aqueous solution. The bonding character, surface composition, and morphology of the N-UNCD films before and after surface treatment were also monitored using X-ray photoelectron spectroscopy, atomic force microscopy, and Raman spectroscopy to ensure the grafting of functional groups; the contributing factor to the results was purely from the surface termination. (c) 2021 Elsevier B.V. All rights reserved.

Automated summary

The surface chemistry of nitrogen incorporated ultrananocrystalline diamond (N-UNCD) films was altered by plasma treatment utilizing oxygen and fluorine plasma chemistries. Contact angle and zeta potential measurements were used to characterize the modified N-UNCD surfaces, providing a more complete understanding of the interactions between solid surface and aqueous solution. The bonding character, surface composition, and morphology of the N-UNCD films were monitored before and after surface treatment using various techniques to ensure the grafting of functional groups, with results primarily influenced by surface termination.