J. Mater. Sci. Technol. ›› 2020, Vol. 41: 168-177.DOI: 10.1016/j.jmst.2019.11.003
• Research Article • Previous Articles Next Articles
Madhusudhan Allea, Seung-Hwan Leeb, Jin-Chul Kimc*()
Received:
2019-07-01
Revised:
2019-08-12
Accepted:
2019-08-28
Published:
2020-03-15
Online:
2020-04-10
Contact:
Kim Jin-Chul
Madhusudhan Alle, Seung-Hwan Lee, Jin-Chul Kim. Ultrafast synthesis of gold nanoparticles on cellulose nanocrystals via microwave irradiation and their dyes-degradation catalytic activity[J]. J. Mater. Sci. Technol., 2020, 41: 168-177.
Fig. 1. TEM images of pure CNC (A), AuNPs/CNC nanocomposite (B), particles size histogram of AuNPs/CNC (C), SAED pattern of synthesized AuNPs/CNC (D), HR-TEM image of AuNPs (E), and EDX spectrum of AuNPs/CNC (F).
Fig. 3. UV-vis spectra of CNC/AuNPs nanocomposite. Effect of CNC concentration (0.25%-2%) (A), HuACl4 concentration (0.1-1 mM) (B), pH value (3.52-12) (C), and MW irradiation time (5-25 s) (D).
Concentration of CNC (%) | MW irradiation time (s) | Concentration of HAuCl4 (mM) | SPR band (nm) | Mean diameter (nm) | Zeta potential (nm) |
---|---|---|---|---|---|
0.25 | 25 | 1.0 | 543 | 93.61 | -45.23 |
1.0 | 25 | 1.0 | 522 | 86.42 | -46.30 |
1.5 | 25 | 1.0 | 522 | 72.19 | -47.53 |
2.0 | 25 | 1.0 | 525 | 54.82 | -49.53 |
2.0 | 25 | 0.1 | 535 | 79.28 | -48.29 |
2.0 | 25 | 0.5 | 525 | 61.42 | -48.51 |
2.0 | 25 | 1.0 | 525 | 56.12 | -48.75 |
2.0 | 5 | 1.0 | 525 | 86.48 | -32.5 |
2.0 | 15 | 1.0 | 525 | 64.52 | -41.0 |
2.0 | 25 | 1.0 | 525 | 52.18 | -48.79 |
Table 1 Effect of various reaction conditions (CNC concentration, HAuCl4 concentration, and MW irradiation time) on particle diameter and surface charge of AuNPs/CNC.
Concentration of CNC (%) | MW irradiation time (s) | Concentration of HAuCl4 (mM) | SPR band (nm) | Mean diameter (nm) | Zeta potential (nm) |
---|---|---|---|---|---|
0.25 | 25 | 1.0 | 543 | 93.61 | -45.23 |
1.0 | 25 | 1.0 | 522 | 86.42 | -46.30 |
1.5 | 25 | 1.0 | 522 | 72.19 | -47.53 |
2.0 | 25 | 1.0 | 525 | 54.82 | -49.53 |
2.0 | 25 | 0.1 | 535 | 79.28 | -48.29 |
2.0 | 25 | 0.5 | 525 | 61.42 | -48.51 |
2.0 | 25 | 1.0 | 525 | 56.12 | -48.75 |
2.0 | 5 | 1.0 | 525 | 86.48 | -32.5 |
2.0 | 15 | 1.0 | 525 | 64.52 | -41.0 |
2.0 | 25 | 1.0 | 525 | 52.18 | -48.79 |
Fig. 6. UV-vis spectra of Congo red with NaBH4 in the presence of AuNPs/CNC nanocatalyst (A). Kinetic plot for the degradation of Congo red (ln(A0/At) vs time) (B).
Name of dye | Catalyst | Time | Reference |
---|---|---|---|
Anacardium occidentale testa derived @AgNPs | 1320 s | [ | |
Congo red | SMG@AuNPs | 600 s | [ |
Olive oil@Copper nanocrystals | 500 s | [ | |
Dalspinin @AuNPs | 600 s | [ | |
GO/Pd nanocomposite | 260 s | [ | |
AuNPs/CNC | 180 s | Present work | |
Ekebergia capensis @AgNPs | 1440 s | [ | |
Allura red | Polyaniline/TiO2 | 4800 s | [ |
AuNPs/CNC | 220 s | Present work | |
Starch@AgNPs | 540 s | [ | |
Rhodamine B | N-CQDs | 14,400 s | [ |
DENAgNPs-NFC | 3000 s | [ | |
ANL@AuNPs | 7200 s | [ | |
AuNPs /CNC | 220 s | Present work | |
UV + TiO2 + H2O | 6000 s | [ | |
Amaranth | La3+ doped TiO2 | 5400 s | [ |
Co embedded CNF | 2400 s | [ | |
AuNPs/CNC | 170 s | Present work |
Table 2 Comparison of previously reported time taken for degradation of CR, AR, RhB, and AM dyes with results obtained in present work.
Name of dye | Catalyst | Time | Reference |
---|---|---|---|
Anacardium occidentale testa derived @AgNPs | 1320 s | [ | |
Congo red | SMG@AuNPs | 600 s | [ |
Olive oil@Copper nanocrystals | 500 s | [ | |
Dalspinin @AuNPs | 600 s | [ | |
GO/Pd nanocomposite | 260 s | [ | |
AuNPs/CNC | 180 s | Present work | |
Ekebergia capensis @AgNPs | 1440 s | [ | |
Allura red | Polyaniline/TiO2 | 4800 s | [ |
AuNPs/CNC | 220 s | Present work | |
Starch@AgNPs | 540 s | [ | |
Rhodamine B | N-CQDs | 14,400 s | [ |
DENAgNPs-NFC | 3000 s | [ | |
ANL@AuNPs | 7200 s | [ | |
AuNPs /CNC | 220 s | Present work | |
UV + TiO2 + H2O | 6000 s | [ | |
Amaranth | La3+ doped TiO2 | 5400 s | [ |
Co embedded CNF | 2400 s | [ | |
AuNPs/CNC | 170 s | Present work |
Fig. 7. UV-vis spectra of Allura red with NaBH4 in the presence of AuNPs/CNC nanocatalyst (A). Kinetic plot for the degradation of Allura red (ln(A0/At) vs time) (B).
Fig. 8. UV-vis spectra of Rhodamine B with NaBH4 in the presence of AuNPs/CNC nanocatalyst (A). Kinetic plot for the degradation of Rhodamine B (ln(A0/At) vs time) (B).
Fig. 9. UV-vis spectra of Amaranth with NaBH4 in the presence of AuNPs/CNC nanocatalyst (A). Kinetic plot for the degradation of Amaranth (ln(A0/At) vs time) (B).
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