CVD-diamond nanoparticle synthesis for DLC film application

Correia, Rebeca Falcão Borja de Oliveira; Wachesk, C. C.; Hurtado, Carolina; Damm, Djoille Denner; Taiariol, Thalita Sani; Tada, Dayane Batista; Vasconcelos, Getúlio de; Corat, Evaldo José; Trava-Airoldi, V.J.

doi:10.1007/s11051-020-05018-y

Cited by 6 publications

(2 citation statements)

References 58 publications

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“…In general, this behavior can be attributed to the sum of the hardness and self-lubricating properties of the DLC. It can be related to the diamond-like carbon that increases the roughness resistance to the grooving mechanism 66 and the carbon similar to graphite that provides the formation of a low shear resistance tribofilm that resembles the condition of solid lubrication 63 . 67 confirmed the friction reduction ability of the DLC during the ball-on-disc test by coating the stainless steel 304 (SUS).…”

Section: Ball-on-disc Testmentioning

confidence: 99%

Study on the Tribological Behavior of Wear and Friction Coefficient on AISI M35 High-Speed Steel with and without DLC Coating

Martins

Carneiro

et al. 2022

Mat. Res.

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Section: Ball-on-disc Testmentioning

confidence: 99%

Study on the Tribological Behavior of Wear and Friction Coefficient on AISI M35 High-Speed Steel with and without DLC Coating

Martins

Carneiro

et al. 2022

Mat. Res.

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“…The most commonly techniques to produce ND are high pressures and high temperatures (HPHT) [7], plasma-assisted chemical vapor deposition (PACVD), hot filament chemical vapor deposition (HFCVD), explosive detonation [7], laser ablation [3,8,9], and ultrasonic cavitation [10,11]. Recently ND with hydrogenated surface were obtained from leftover of HFCVD system by ultrasonic cavitation [12] and high-energy mill grinding [13]. The ND obtained by explosive detonation have high surface density of oxidized chemical groups that are highly reactive and enable the coupling of different types of molecules [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Diamond Nanoparticles-Porphyrin mTHPP Conjugate as Photosensitizing Platform: Cytotoxicity and Antibacterial Activity

Hurtado

Cena

et al. 2021

Nanomaterials

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Conjugation of photosensitizers (PS) with nanoparticles has been largely used as a strategy to stabilize PS in the biological medium resulting in photosensitizing nanoparticles of enhanced photoactivity. Herein, (Meso-5, 10, 15, 20-tetrakis (3-hydroxyphenyl) phorphyryn (mTHPP) was conjugated with diamond nanoparticles (ND) by covalent bond. Nanoconjugate ND-mTHPP showed suitable stability in aqueous suspension with 58 nm of hydrodynamic diameter and Zeta potential of −23 mV. The antibacterial activity of ND-mTHPP was evaluated against Escherichia coli for different incubation times (0–24 h). The optimal activity was observed after 2 h of incubation and irradiation (660 nm; 51 J/cm2) performed right after the addition of ND-mTHPP (100 μg/mL) to the bacterial suspension. The inhibitory activity was 56% whereas ampicillin at the same conditions provided only 14% of bacterial growth inhibition. SEM images showed agglomerate of ND-mTHPP adsorbed on the bacterial cell wall, suggesting that the antimicrobial activity of ND-mTHPP was afforded by inducing membrane damage. Cytotoxicity against murine embryonic fibroblast cells (MEF) was also evaluated and ND-mTHPP was shown to be noncytotoxic since viability of cells cultured for 24 h in the presence of the nanoconjugate (100 μg/mL) was 78%. Considering the enhanced antibacterial activity and the absence of cytotoxic effect, it is possible to consider the ND-mTHPP nanoconjugate as promising platform for application in antimicrobial photodynamic therapy (aPDT).

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Probing trans-polyacetylene segments in a diamond film by tip-enhanced Raman spectroscopy

Guo

et al. 2021

Diamond and Related Materials

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CVD-diamond nanoparticle synthesis for DLC film application

Cited by 6 publications

References 58 publications

Study on the Tribological Behavior of Wear and Friction Coefficient on AISI M35 High-Speed Steel with and without DLC Coating

Study on the Tribological Behavior of Wear and Friction Coefficient on AISI M35 High-Speed Steel with and without DLC Coating

Diamond Nanoparticles-Porphyrin mTHPP Conjugate as Photosensitizing Platform: Cytotoxicity and Antibacterial Activity

Probing trans-polyacetylene segments in a diamond film by tip-enhanced Raman spectroscopy

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