Surface Functionality Features of Nanosized Silica Obtained by Electron Beam Evaporation at Ambient Pressure

Table 1

Acid-base indicators and their parameters.

Indicator	p𝐾a	Wavelength 𝜆, nm
Ethylene glycol	14.2	200
Indigo-carmine	12.8	610
Nile blue	10.5	640
Tymol blue	8.8	430
Bromo-tymol blue	7.3	430
Bromo-crezyl purple	6.4	590
Methyl red	5.0	430
Bromo-phenol blue	4.1	590
Methyl orange	3.5	460
m-nitroaniline	2.5	340
Fuccine	2.1	540
Brilliant green	1.3	610
Crystalline violet	0.8	580
o-nitroaniline	−0.3	410
p-chloro-nitroaniline	−0.9	330
Dinitroaniline	−4.4	340