Cobalt-platinum nanomotors for local gas generation

Szkudlarek, Aleksandra; Hnida-Gut, Katarzyna E.; Kollbek, Kamila; Marzec, Mateusz; Pitala, Krzysztof; Sikora, Marcin

doi:10.1088/1361-6528/ab53bd

Cited by 4 publications

(6 citation statements)

References 36 publications

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“…Another significant advantage compared with magnetic and electric field driven motors is that ultrasonic field driven motors are simple to operate, do not require the introduction of magnetic materials, and have a larger usable range. Ultrasonic-driven Electrically driven [112] Two-segmented micro/nanorods Au/Ru Acoustically driven [113] Co/Pt Chemically driven [114] Au/TiO 2 Light driven [115] Pt/Ag Light driven [116] Si/TiO 2 Light driven [117] JFRs Chemically driven [118] Pt/SiO 2 Chemically driven [119] Au/Pt Chemically driven [120] Nanoclay/Pt Chemically driven [121] Si/Pt, Si/Ag Chemically driven [122] Au/ZnO Light driven [123] Au/Fe 2 O 3 Light driven [124] Au/ Ni Acoustically/ Magnetically driven [125] Multi-segmented micro/nanorods Ru/Ni/Au Acoustically driven [126] Au/Fe/Ni Chemically driven [127] CdSe/Au/CdSe Electrically driven [128] (Au/Ni) 8…”

Section: Single-segmented Micro/nanorodsmentioning

confidence: 99%

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Recent Advances in One-Dimensional Micro/Nanomotors: Fabrication, Propulsion and Application

et al. 2022

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Due to their tiny size, autonomous motion and functionalize modifications, micro/nanomotors have shown great potential for environmental remediation, biomedicine and micro/nano-engineering. One-dimensional (1D) micro/nanomotors combine the characteristics of anisotropy and large aspect ratio of 1D materials with the advantages of functionalization and autonomous motion of micro/nanomotors for revolutionary applications. In this review, we discuss current research progress on 1D micro/nanomotors, including the fabrication methods, driving mechanisms, and recent advances in environmental remediation and biomedical applications, as well as discuss current challenges and possible solutions. With continuous attention and innovation, the advancement of 1D micro/nanomotors will pave the way for the continued development of the micro/nanomotor field.

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Section: Single-segmented Micro/nanorodsmentioning

confidence: 99%

“…4c) [116]. The bubble driving mechanism of Co/Pt Janus nanomotors in H 2 O 2 solution is formed by the asymmetric thrust of metal platinum catalyzing H 2 O 2 to generate bubbles [114].…”

Section: Two-segmented Micro/nanorodsmentioning

confidence: 99%

Recent Advances in One-Dimensional Micro/Nanomotors: Fabrication, Propulsion and Application

et al. 2022

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“…Micro-/nanomotors, as artificial micro-/nanoscale devices, are capable of converting surrounding fuel or external stimuli to self-propelled locomotion. , With the incorporation of functional molecules, such micro-/nanomotors were able to tackle complex and designed tasks and are envisioned to revolutionize nanoscience and nanotechnology in fields such as environmental remediation, − microsurgery, , and drug delivery. , Tremendous efforts have been devoted to the fabrication and application of micro-/nanomotors including Janus microspheres, , bimetallic nanowires, , tubular micro-/nanorockets, , and supramolecular motors, , which are commonly driven by self-diffusiophoresis, self-electrophoresis, bubble propulsion, etc . The motion velocity is of vital importance for micro-/nanomotors, and the higher speed translating to stronger propulsion and cargo towing abilities can effectively tackle more complex tasks especially in the field of environmental remediation and drug delivery. , Currently, increasing the fuel concentration or adding extra fuels (H 2 O 2 , , urea, , hydrazine, , etc …”

Section: Introductionmentioning

confidence: 99%

Halloysite-Based Nanorockets with Light-Enhanced Self-Propulsion for Efficient Water Remediation

Wang

Hao

et al. 2022

Langmuir

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Halloysite-based tubular nanorockets with chemical-/light-controlled self-propulsion and on-demand acceleration in velocity are reported. The nanorockets are fabricated by modifying halloysite nanotubes with nanoparticles of silver (Ag) and light-responsive α-Fe2O3 to prepare a composite of Ag–Fe2O3/HNTs. Compared to the traditional fabrication of tubular micro-/nanomotors, this strategy has merits in employing natural clay as substrates of an asymmetric tubular structure, of abundance, and of no complex instruments required. The velocity of self-propelled Ag–Fe2O3/HNTs nanorockets in fuel (3.0% H2O2) was ca. 1.7 times higher under the irradiation of visible light than that in darkness. Such light-enhanced propulsion can be wirelessly modulated by adjusting light intensity and H2O2 concentration. The highly repeatable and controlled “weak/strong” propulsion can be implemented by turning a light on and off. With the synergistic coupling of the photocatalysis of the Ag–Fe2O3 heterostructure and advanced oxidation in H2O2/visible light conditions, the Ag–Fe2O3/HNTs nanorockets achieve an enhanced performance of wastewater remediation. A test was done by the catalytic degradation of tetracycline hydrochloride. The light-enhanced propulsion is demonstrated to accelerate the degradation kinetics dramatically. All of these results illustrated that such motors can achieve efficient water remediation and open a new path for the photodegradation of organic pollutions.

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“…The ionic strength of the environment can influence the mentioned parameters above and as a consequence changes the velocity of motors . Platinum-based nanomotors can be utilized in Pb 2+ ion sensing due to the significant changes in their velocity after poisoning the platinum surface with Pb 2+ ions. , Other potential applications of platinum-based nanomotors are their potential for detection of various analytes such as H 2 O 2 , glucose, bacterial endotoxin, and local gas generation in fuel cells and microdevices . The Janus structure is an attractive architecture utilized in motor systems.…”

Section: Introductionmentioning

confidence: 99%

“…12,19 Other potential applications of platinum-based nanomotors are their potential for detection of various analytes such as H 2 O 2 , 20 glucose, 21 bacterial endotoxin, 22 and local gas generation in fuel cells and microdevices. 23 The Janus structure is an attractive architecture utilized in motor systems. Due to their unique asymmetric structures that provide the multifunctionality, 24 they play a critical role in the fabrication of micro-and nanomotors.…”

Section: ■ Introductionmentioning

confidence: 99%

Self-/Magnetic-Propelled Catalytic Nanomotors Based on a Janus SPION@PEG-Pt/PCL Hybrid Nanoarchitecture: Single-Particle versus Collective Motions

2021

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In this paper, we synthesized superparamagnetic iron oxide nanoparticles (NPs) functionalized with (3-aminopropyl)triethoxysilane (Fe3O4@APTES). The synthesized NPs were coated with succinic anhydride (Fe3O4@COOH) in the next step. Half the surface of the NPs was shielded with wax microparticles via the Pickering emulsion technique, and the unshielded side was covered with poly(ethylene glycol) methyl ether. Platinum nanoparticles (Pt NPs) were deposited between PEG chains by the oxidation-reduction method through an in situ procedure to obtain a metal–polymer composite. These deposited Pt NPs have the potential to catalyze the decomposition of hydrogen peroxide at the surface of Janus nanomotors (JNMs). After de-waxing of the NPs, Irgacure 2959 (as the initiator) was reacted with the bare side of the NPs to provide the opportunity to grow poly(ε-caprolactone) (PCL) chains on the surface of the nanomotors through the “grafting from” method. The diffusion coefficient and velocity of the JNMs (before and after the PCL reaction) in the aqueous solution of 1, 2, 3, 5, and 10% (w/w) hydrogen peroxide and in the presence of different concentrations of NaCl solutions (0, 5, and 10% (w/v)) were investigated by mean square displacement analysis for single-particle or collective motions of JNMs. In addition, the simultaneous effect of an external magnetic field and the NaCl concentration on the movement direction of JNMs was also evaluated in the presence of hydrogen peroxide (10%). Increasing the ionic strength through NaCl addition permits the JNMs to move with relatively lower amounts of fuel [i.e., 2% (w/w)]. The collective motion investigation of the JNMs showed the highest speed in the media with 10% (w/w) hydrogen peroxide and 5% (w/v) NaCl solution (about 1215.78 μm2/s) due to the surfactant effect of the Janus architecture.

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Cobalt-platinum nanomotors for local gas generation

Cited by 4 publications

References 36 publications

Recent Advances in One-Dimensional Micro/Nanomotors: Fabrication, Propulsion and Application

Recent Advances in One-Dimensional Micro/Nanomotors: Fabrication, Propulsion and Application

Halloysite-Based Nanorockets with Light-Enhanced Self-Propulsion for Efficient Water Remediation

Self-/Magnetic-Propelled Catalytic Nanomotors Based on a Janus SPION@PEG-Pt/PCL Hybrid Nanoarchitecture: Single-Particle versus Collective Motions

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