Alg	Alginate
HNTs	Halloysite Nanotubes
K	Kaolin
Ca2+	Calcium Ions
HNTs@Alg	Halloysite Nanotubes–Alginate Composite Beads
K@Alg	Kaolin–Alginate Composite Beads
FTIR	Fourier Transform Infrared Spectroscopy
SEM-EDS	Scanning Electron Microscopy with Energy-Dispersive Spectroscopy
XRD	X-ray Diffraction
XPS	X-ray Photoelectron Spectroscopy
CTC	Chlortetracycline Hydrochloride
DDS	Drug Delivery System(s)
TC	Tetracycline Hydrochloride
MWCNTs	Multiwall Carbon Nanotubes
GO	Graphene Oxide
LBL	Layer-by-Layer
Si–O–Si	Siloxane Group
Al–OH	Aluminum Hydroxyl Group
Ca	Calcium
O	Oxygen
C	Carbon
Al	Aluminum
Si	Silicon
CaCl2	Calcium Chloride
NaOH	Sodium Hydroxide
HCl	Hydrochloric Acid
SA	Sodium Alginate
DD	Double-Distilled (Water)
UV–Vis	Ultraviolet–Visible Spectroscopy
PBS	Phosphate-Buffered Saline
FIB-SEM	Focused Ion Beam–Scanning Electron Microscope
MIL-100(Fe)	Metal–Organic Framework MIL-100 Containing Iron
°C	Degrees Celsius
rpm	Revolutions Per Minute
K (in temperature)	Kelvin
eV	Electron Volt
R2	Coefficient of Determination
n	Diffusion Exponent (in Korsmeyer–Peppas Model)
KBr	Potassium Bromide
N	Nitrogen
Cu	Copper
NaCl	Sodium Chloride
pHPZC	Point of zero charge
m	Mass
Q	Capacity
C0	Initial concentration
Cₑ	Equilibrium concentration
V	Volume
PFO	Pseudo-First-Order Model
PSO	Pseudo-Second-Order Model
E. coli	Escherichia coli
S. aureus	Staphylococcus aureus
ATCC	American Type Culture Collection