| 7355 |
32 |
Au2Pt |
42 |
3 |
nm |
TEM |
|
|
|
|
|
|
|
|
|
| 7359 |
39 |
Au@Rh‐ICG‐CM |
95.6 |
3.6 |
nm |
DLS |
The mean diameter of Au@Rh nanoparticles is 95.6 ± 3.6 nm. |
|
|
|
|
|
|
|
|
| 7385 |
81 |
Pt–Ni nanoparticles |
|
|
|
|
|
|
|
|
|
|
|
|
|
| 7450 |
158 |
AgPd@BSA/DOX |
216 |
7.03 |
nm |
DLS |
As shown in Fig. 2k, the DLS results revealed that the hydrodynamic sizes of the Ag NPs, AgPd NPs, AgPd@BSA and AgPd@BSA/DOX were 158 ± 4.18, 165 ± 5.74, 214 ± 8.41, 216 ± 7.03 nm, respectively, which is bigger than actual size observed from the TEM image. |
|
|
|
|
|
|
|
|
| 7451 |
158 |
AgPd@BSA/DOX |
120 |
|
nm |
TEM |
Nevertheless, both Ag NPs and AgPd NPs have similar mean particle sizes overall about 120 nm |
|
|
|
|
|
|
|
|
| 7452 |
159 |
Au@Pt |
50 |
|
nm |
TEM |
A typical TEM image (Fig. 3) showed that the Au@Pt nanozymes were relatively uniform in size and similar in structure, and the diameter of the nanoparticles was approximately 50 nm. As a uniform porous structure, Pt NPs formed a branched structure on the surface ofAu. The particle size ofthe Au corewas approximately 30e35 nm, and the average diameter of the Pt NPs was approximately 5e10 nm. |
|
|
|
|
|
|
|
|
| 7468 |
178 |
Au 1 Pd 5 |
1.4 |
|
nm |
TEM |
TEM was performed to investigate the size distribution of monometallic and bimetallic NCs. As shown in Fig. 2a and b, NADH-reduced Pd NCs with 24 h-incubation exhibit the mean size of 1.1 nm, while Au NPs show the average diameter of 8.1 nm. Remarkably, both Au1Pd5 and Au1Pd1 exist as highly dispersed NCs, showing the average size of 1.4 and 1.6 nm respectively (Fig. 2c and d). The mean size increases in the order of Pd < Au1Pd5 < Au1Pd1 < Au, which is consistent with the relative content of Au species. Hence, it is reasonable that NADH facilitates the rapid formation of ultrasmall NCs within a suitable range of [Na2PdCl4]/[HAuCl4]. Further, the atomic ratio in bimetallic NCs was determined by ICP-OES. The molar ratio of [Au]/[Pd] is 1.3 for Au1Pd1 and 0.25 for Au1Pd5, which is close to the corresponding theoretical ratio of two precursors in synthesis process. |
|
|
|
|
|
|
|
|
| 7510 |
232 |
AuPtRu |
200 |
|
nm |
TEM |
Transmission electron microscopy (TEM) imaging was performed to confirm the successful synthesis of AuPd, AuPt, and AuPtRu. As shown in Fig. 1a–c, AuPd, AuPt, and AuPtRu with the average sizes of 5, 4, and 200 nm were obtained, respectively. |
|
|
|
|
|
|
|
|
| 7511 |
234 |
CdCo2O4 |
|
|
|
|
|
72 |
|
|
|
|
|
|
The pore size analysis for adsorption data, based on the Barrett-Joyner-Halenda (BJH) theories, clearly indicates that the fabricated nanosheets possess pores with an average diameter of 20 nm |
| 7555 |
312 |
PtRu NPs |
0.227 |
|
nm |
TEM |
The adjacent lattice spacing was calculated to be 0.227 nm (marked in red), which matched well with the planar distance of the (111) plane. |
|
|
|
|
|
|
|
|
| 7620 |
385 |
Au@Pt nanoparticles |
20-2000 |
|
nm |
TEM |
The size of the synthesized GNPs according to TEM was 20.0 ± 2.6 nm (n = 100, Fig. 2a). |
|
|
|
|
4 |
|
U/mg |
|
| 7621 |
385 |
Au@Pt nanoparticles |
20 |
2.6 |
nm |
TEM |
The size of the synthesized GNPs according to TEM was 20.0 ± 2.6 nm (n = 100, Fig. 2a). |
|
|
|
|
4 |
|
U/mg |
|
| 7622 |
385 |
Au@Pt nanoparticles |
20 |
2.6 |
nm |
TEM |
The size of the synthesized GNPs according to TEM was 20.0 ± 2.6 nm (n = 100, Fig. 2a). |
|
|
|
|
4.4 |
|
U/mg |
These changes led to a 70-fold increase in peroxidase-mimicking activity in the solution (specific activity 0.06–4.4 U mg−1) and a 30-fold decrease in LOD using the catalytic activity of Au@Pt. |
| 7623 |
385 |
Au@Pt nanoparticles |
20-2000 |
|
nm |
TEM |
The size of the synthesized GNPs according to TEM was 20.0 ± 2.6 nm (n = 100, Fig. 2a). |
|
|
|
|
4.4 |
|
U/mg |
These changes led to a 70-fold increase in peroxidase-mimicking activity in the solution (specific activity 0.06–4.4 U mg−1) and a 30-fold decrease in LOD using the catalytic activity of Au@Pt. |
| 7627 |
389 |
Au@PtNP |
35.5 |
4.3 |
nm |
DLS |
We found that the ions (1.0 μM) induced the slight aggregation of the Au@PtNPs, which was demonstrated by the average hydrate size change of the Au@PtNPs from 35.5 ± 4.3 to 75.0 ± 5.5 nm in Fig. 3 |
|
|
|
|
|
|
|
|
| 7635 |
397 |
PtNi nanocubes |
24 |
|
nm |
TEM |
As SEM and TEM images shown in Fig. 1A and 1B, the as-synthesized PtNi NCs displayed a clear uniform-size cube structure with an average diameter of 24 nm |
|
|
|
|
|
|
|
|
| 7646 |
412 |
Au/Pt star |
75 |
|
nm |
TEM |
|
|
|
|
|
|
|
|
|
| 7695 |
461 |
PdCuAu NPs |
13 |
|
nm |
TEM |
Their particles are distributed between 10 and 25 nm, with an average particle size of 13 nm (see Figures 2a,b). |
|
|
|
|
|
|
|
|
| 7734 |
505 |
PtCu NAs |
32.1 |
4.5 |
nm |
TEM |
The average diameter of the PtCu NAs was calculated to be 32.1 ± 4.5 nm |
|
|
|
|
|
|
|
|
| 7740 |
507 |
PtCu bimetallic nanoalloys (NAs) |
32.1 |
4.5 |
nm |
DLS |
The average diameter of the PtCu NAs was calculated to be 32.1 ± 4.5 nm (Fig. S1c). |
|
|
|
|
|
|
|
|
| 7766 |
536 |
Cu/Au/Pt TNs |
20 |
|
nm |
TEM&SEM |
|
|
|
|
|
|
|
|
|
| 7784 |
554 |
Pd@Au nanostructures |
42 |
|
nm |
TEM |
Theβ-CD-Pd@Au was monodispersed with an average diameter of 42 nm. |
|
|
|
|
|
|
|
|
| 7790 |
560 |
Mesoporous Pd@Pt |
50 |
|
nm |
TEM |
Fig. 5. TEM image of mesoporous Pd@Pt NPs which are on a size order of 50 nm. |
|
|
|
|
|
|
|
|
| 7793 |
565 |
Au–Ag@HA NPs |
104 |
6.2 |
nm |
DLS |
The hydrodynamic diameter of Au−Ag NPs increased from 60.8 ± 2.0 nm to 104.0 ± 6.2 nm |
|
|
|
|
|
|
|
|
| 7843 |
621 |
Au@Pt |
|
|
|
TEM |
From the results of TEM and UV–visible spectroscopy characterizations (Fig. 2), lots of spiny Pt nanostructures can be found on the smooth surface of AuNRs (D = 21 nm and L = 74 nm) |
|
|
|
|
|
|
|
|
| 7851 |
629 |
DNA-Au/Pt NCs |
~4 |
|
nm |
|
|
|
|
|
|
|
|
|
|
| 7857 |
637 |
Magnetite@cellulose NCs |
200 |
|
nm |
TEM |
|
25 |
|
|
|
|
|
|
|
| 7944 |
735 |
Au@Pt |
|
|
|
TEM |
The average length and width of the AuNRs were calculated to be 43.3 4.9 nm and 11.2 2.3 nm respectively (Fig. S1a and b, ESI†). The Pt nanodots were wrapped on the surface of the AuNRs homogeneously and formed a rough shell, as observed from Fig. 1b and c and Fig. S2b–d (ESI†). The average length and width were 57.9 4.9 nm and 14.5 2.6 nm respectively (Fig. S1c and d, ESI†). The HR-TEM image of Au@Pt nanorods (Fig. 1d) showed clear lattice distances of 0.224 nm and 0.231 nm, which can be assigned to the (111) planes of crystalline Pt and Au. |
|
|
|
|
|
|
|
|
| 7957 |
744 |
Pt-GNRs |
|
|
|
TEM |
The GNRs displayed a length of ~60 nm and a width of ~17 nm (aspect ratio of ~3.5), as seen in Figure 2b,c. After depositing of Pt, the rod-like structure remained, and the Pt nanodots with sizes of 3-4 nm covered the end of the GNRs homogeneously. |
|
|
|
|
|
|
|
|
| 7963 |
752 |
Au@Pt |
|
|
nm |
DLS |
The
formation of the spiky Pt layer on GNP seeds resulted in the increase of the hydrodynamic diameter from 22.2 ± 5.2 to 54.9 ± 12.2 nm |
|
|
|
|
|
|
|
|
| 7968 |
758 |
Ag1Pd1 |
1.8 |
|
nm |
TEM |
the reduced Pd species form highly disperse NCs with the average size of 1.8 nm |
|
|
|
|
|
|
|
|
| 8008 |
798 |
PtPdCu TNAs |
36.43 |
4.32 |
nm |
TEM |
The diameter was calculated to be 36.43 ± 4.32 nm from 200 random cubic shape particles. |
|
|
|
|
|
|
|
|
| 8030 |
830 |
CA@PtNi hNS |
10.3 |
2 |
nm |
TEM |
TEM image [Fig. 2(b)] indicates that the CA@PtNi hNS consist of well-dispersed, hollow nanospheres with an average diameter of 10.3 ± 2 nm. |
|
|
|
|
|
|
|
|
| 8193 |
1135 |
Ni–Pt NPs |
13.9 ± 2.4 |
|
nm |
TEM |
|
|
|
|
|
|
|
|
|
| 8203 |
1155 |
Au25 |
2 |
|
nm |
DLS |
The hydrodynamic size of Au25 is determined to be 2.0 nm by dynamic light scattering (DLS), and the zeta potentials of all clusterzymes are around −35 mV, suggesting the ultrasmall size and good colloid stability (Supplementary Fig. 1). |
|
|
|
|
|
|
|
|
| 8211 |
1166 |
Pt–Ir NCs |
46.2 |
2.1 |
nm |
TEM |
The Pt–Ir NCs were well prepared, with an average diameter of 46.2 ± 2.1 nm as calculated from the maximum edge length of 200 Pt–Ir NCs. |
|
|
|
|
|
|
|
|
| 8212 |
1166 |
Pt–Ir NCs |
46.2 |
2.1 |
nm |
SEM |
The Pt–Ir NCs were well prepared, with an average diameter of 46.2 ± 2.1 nm as calculated from the maximum edge length of 200 Pt–Ir NCs. |
|
|
|
|
|
|
|
|
| 8241 |
1210 |
Cr/CeO2 |
8~12 |
|
nm |
TEM |
the transmission electron microscopy
(TEM) and high-resolution TEM (HRTEM) images of
Cr/CeO2 nanozyme in Figure S1 and 1G reveal that
the size of nanozyme is about 8~12 nm, and
interplanar spacing of the (111) plane of CeO2 is
slightly reduced from 0.3123 Å to ~0.3047 Å after Cr
doping. |
|
|
|
|
|
|
|
|
| 8255 |
1233 |
Au-Pt |
60 |
|
nm |
TEM |
|
|
|
|
|
|
|
|
|
| 8312 |
1303 |
Au@Pt NRs |
60 |
|
nm |
TEM |
|
|
|
|
|
|
|
|
|
| 8318 |
1307 |
Pt-Ni-Cu nanocube |
35 |
|
nm |
TEM |
|
|
|
|
|
|
|
|
|
| 8358 |
1352 |
Cu(I)1.28Cu(II)0.36Se nanoparticles |
30 |
|
nm |
TEM |
Copper selenide nanoparticles synthesized using PAH as the surfactant template were well-dispersed nanoparticles with an average diameter of ca. 30 nm. |
|
|
|
|
|
|
|
|
| 8431 |
1424 |
Au@Pt NPs |
35 |
|
nm |
TEM |
According to our protocols, 18 nm
AuNPs, 6 nm PtNPs and 35 nm Au@Pt NPs were successfully
decorated on the MoS2 surface, forming the expected MoS2-AuNPs
(Fig. S1A, ESI†), MoS2-PtNPs (Fig. S1B, ESI†) and MoS2-Au@Pt
nanocomposites (Fig. S1C, ESI†), respectively |
|
|
|
|
|
|
|
|
| 8435 |
1430 |
Pd-Pt |
42.3 |
|
nm |
TEM |
The Average edge length |
|
|
|
|
|
|
|
|
| 8436 |
1430 |
Pt |
1 |
|
nm |
TEM |
The thickness of the Pt layer |
|
|
|
|
|
|
|
|