BN/Ag hybrid nanomaterials with petal-like surfaces as catalysts and antibacterial agents

Abstract

BN/Ag hybrid nanomaterials (HNMs) and their possible applications as novel active catalysts and antibacterial agents are investigated. BN/Ag nanoparticle (NP) hybrids were fabricated using two methods: (i) chemical vapour deposition (CVD) of BN NPs in the presence of Ag vapours, and (ii) ultraviolet (UV) decomposition of AgNO 3 in a suspension of BN NPs. The hybrid microstructures were studied by high-resolution transmission electron microscopy (HRTEM), high-angular dark field scanning TEM imaging paired with energy dispersion X-ray (EDX) mapping, X-ray photoelectron spectroscopy (XPS), and infrared spectroscopy (FTIR). They were also characterized in terms of thermal stability, Ag + ion release, catalytic and antibacterial activities. The materials synthesized via UV decomposition of AgNO 3 demonstrated a much better catalytic activity in comparison to those prepared using the CVD method. The best catalytic characteristics (100% methanol conversion at 350 °C) were achieved using the UV BN/Ag HNMs without preliminary annealing at 600 °C in an oxidizing atmosphere. Both types of the BN/Ag HNMs possess a profound antibacterial effect against Escherichia coli K-261 bacteria.

An All-Solid-State Battery with a Tailored Electrode–Electrolyte Interface Using Surface Chemistry and Interlayer-Based Approaches

“…The components at 192.7, 191.6, and 190.1 eV correspond to boron oxynitrides (BN x O y ), boron nitride (B N ), and dangling boron bonds (−B), respectively. 52,53 The presence of boron oxynitride at a higher binding energy indicates the reaction of the TDMAB precursor with an oxygen-rich LLZT surface. A similar observation of the formation of boron oxide (B 2 O 3 ) was reported during the deposition of BN on Li-Al-Ti-phosphate (LATP), using a chemical vapor deposition approach.…”

“…To better understand the various bonding environments of boron species, the B 1s acquired after 20 ALD cycles (Figure c) was decomposed into three components by constraining the full width at half maximum (FWHM) of all three components to be equal and ≤2 eV. The components at 192.7, 191.6, and 190.1 eV correspond to boron oxynitrides (BN x O y ), boron nitride (B N ), and dangling boron bonds (−B), respectively. , The presence of boron oxynitride at a higher binding energy indicates the reaction of the TDMAB precursor with an oxygen-rich LLZT surface. A similar observation of the formation of boron oxide (B 2 O 3 ) was reported during the deposition of BN on Li-Al-Ti-phosphate (LATP), using a chemical vapor deposition approach .…”

Smart electrochemical immunosensing of aflatoxin B1 based on a palladium nanoparticle-boron nitride-coated carbon felt electrode for the wine industry

“…hydrothermal deposition [37], chemical vapour deposition [38], spray drying and pyrolysis [39]. They require high temperatures, toxic precursors, and complex and long experimental methods.…”

Polyol Synthesis of Ag/BN Nanohybrids and their Catalytic Stability in CO Oxidation Reaction

“…Chemical vapor deposition (CVD) provides sufficient control over content and homogeneity of catalytically active nanoparticles (such as Ag nanoparticles (AgNPs)) populating BN surfaces. On the other hand, decent performance the metal nanoparticles produced by that method is rather questionable . Various chemical methods, such as wet impregnation method or polyol process, allow for precise control of the shape and size of metallic nanoparticles .…”

“…On the other hand, decent performance the metal nanoparticles produced by that method is rather questionable. [15] Various chemical methods, such as wet impregnation method or polyol process, allow for precise control of the shape and size of metallic nanoparticles. [16][17][18][19] Many works have been dedicated to investigation of mechanisms and regularities of AgNPs formation via polyol process.…”