TeM	track-etched membrane
PET	Poly(ethylene terephthalate)
DMAEMA	2-(dimethyamino)ethyl methacrylate
PDMAEMA	poly-2-(dimethyamino)ethyl methacrylate
PDMAEMA-g-PET	poly(2-(dimethyamino)ethyl methacrylate) grafted PETtrack-etched membranes
Ag@PDMAEMA-g-PET	poly(2-(dimethyamino)ethyl methacrylate) grafted track-etched membranes loaded with silver nanoparticles
RA1	O-ethyl-S-(1-methoxycarbonyl) ethyl dithiocarbonate
TGA	thermogravimetric analysis
XRD	X-ray diffraction
XPS	X-ray photoelectron spectroscopy
SEM	scanning electron microscopy
EDX	energy dispersive X-ray analysis
RDRP	reversible-deactivation radical polymerization
RAFT	reversible addition fragmentation chain transfer polymerization
CTAs	chain transfer agents
BP	benzophenone
pHPZC	pH of zero point
NPs	nanoparticles
Qe	amount of As(III) adsorbed by the unit mass of copper (mg/g)
C0	feed As(III) concentration (mg/L)
C e	concentration of As(III) in aliquots (mg/L)
DC	degree of crystallinity (%)
L	average crystallite size (nm)
$q_t$	adsorption capacity at time $\mathrm{t}$ (mg/g)
$k_1$	First-order reaction rate constant (min−1)
$k_2$	pseudo-second-order rate constant of adsorption ($\frac{\mathrm{g}}{\mathrm{mg}\times \min }$)
$\alpha$	initial rate of the adsorption process, mg/g × min
$\beta$	desorption constant (g·mmol−1)
Ra	roughness of the composite (nm)
b	constant related to the energy of adsorption (i.e., Langmuir constant (L/µg))
Ce	equilibrium concentration of adsorbate (mg/L)
$Q_0$	maximum monolayer coverage capacity (mg/g)
$k_F$	Freundlich isotherm constant related to the adsorption capacity (µg/g)
$Q_d$	adsorption capacity of the Dubinin–Radushkevich monolayer (µg/g)
$\beta$	constant associated with the free energy of sorption (mol2/kJ2)
$E_{DR}$	free energy of adsorption (kJ/mol)