A comparison of the radiosensitisation ability of 22 different element metal oxide nanoparticles using clinical megavoltage X-rays

Table 1 NP diameters measured by TEM and DLS

NP	TEM Mean dia (nm) ±SD	TEM Mode dia (nm)	DLS Median dia (nm) ±SD	DLS Poly-dispersity	Supplier quoted TEM dia (nm)
Al₂O₃	49 ± 38	14	781 ± 432	0.21	< 50
SiO₂	46 ± 45	13	424 ± 364	0.25	10–20
Sc₂O₃	50 ± 34	13	430 ± 78	0.04	< 80
TiO₂	61 ± 43	14	439 ± 315	0.17	21
V₂O₅	47 ± 36	13	717 ± 401	0.39	< 80
Cr₂O₃	56 ± 51	13	99 ± 55	0.16	60
MnO₂	64 ± 55	14	25 ± 6	0.57	50
Fe₃O₄	49 ± 40	15	805 ± 336	0.14	50–100
CoO	46 ± 39	14	71 ± 15	0.47	50
NiO	58 ± 44	19	375 ± 283	0.23	< 50
CuO	40 ± 29	16	132 ± 59	0.23	< 50
ZnO	44 ± 30	13	353 ± 238	0.27	< 100
ZrO₂	50 ± 32	26	155 ± 31	0.59	40
MoO₃	30 ± 21	13	203 ± 47	0.06	13–80
Nd₂O₃	64 ± 51	15	227 ± 131	0.53	30–45
Sm₂O₃	40 ± 44	13	41 ± 31	0.69	15–45
Eu₂O₃	69 ± 56	13	8 ± 2	0.54	10–100
Gd₂O₃	26 ± 37	13	67 ± 24	1.00	10–100
Tb₄O₇	107 ± 108	13	1073 ± 340	0.10	10–100
Dy₂O₃	42 ± 30	14	938 ± 301	0.18	30
Er₂O₃	64 ± 67	13	333 ± 41	0.01	10–100
HfO₂	105 ± 84	18	74 ± 13	0.69	61–80

ISSN: 1868-6966