BaTiO3–xNy: Highly Basic Oxide Catalyst Exhibiting Coupling of Electrons at Oxygen Vacancies with Substituted Nitride Ions

Miyazaki, Masayoshi; Saito, Hiroshi; Ogasawara, Kiya; Kitano, Masaaki; Hosono, Hideo

doi:10.1021/jacs.3c10727

Cited by 5 publications

(1 citation statement)

References 44 publications

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“…In addition, the zeta potential of the material was characterized (Figure B) to investigate the effect of the introduction of Zn 2+ on the electrical properties of the material surface. According to the results, there was a significant shift from 21.2 to 28.8 mV after introducing Zn 2+ , which was likely caused by the abundance of positively charged Ov on the surface of Zn/u-SiO 2 –Ov nAGG that formed by the O 2– dissociation following Zn 2+ introduction. ,,, This could accelerate the motion of negatively charged anions such as the coreactant S 2 O 8 2– and electron transfer rate, which finally enhanced the ECL efficiency. Meanwhile, XPS valence band (VB) spectrum (Figure S2) demonstrated that VB decreased from 2.84 to 2.34 eV following Zn 2+ introduction, which could be attributed to the substantial Ov in the Zn/u-SiO 2 –Ov nAGG, caused a midgap state and a decrease in the binding energy of the valence electrons. , …”

Section: Resultsmentioning

confidence: 91%

Electrochemiluminescence of Ultrasmall Silica Nanoparticles from Size Modulation and Multipath Surface State Adjustment for Ultrasensitive HIV-DNA Fragment Detection

Duan,

Cao,

Zhu

et al. 2024

Anal. Chem.

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Here, ultrasmall SiO 2 nanoparticles (u-SiO 2 NPs, <5 nm) with obvious electrochemiluminescence (ECL) phenomenon, which was absent for conventional silica nanoparticles (c-SiO 2 NPs), were reported. In a finite ultrasmall volume, the u-SiO 2 NPs exhibited increasing ground state energy and higher optical absorption strength due to the electron−hole confinement model and favored catalyzing the reaction through the rapid diffusion of bulk charge, resulting in apparent ECL emission. Then, Zn 2+ -induced u-SiO 2 nanoaggregates (Zn/u-SiO 2 −Ov nAGG) were synthesized and exhibited improved ECL performance via multipath surface state adjustment of u-SiO 2 from several aspects, including aggregation-induced ECL, the generation of oxygen vacancy (Ov), and more positive surface charge. In addition, an ECL biosensor was constructed for ultrasensitive human immunodeficiency virus-related deoxyribonucleic acid detection from 100 aM to 1 nM with a low limit of 50.48 aM, combining the ECL luminescence of Zn/u-SiO 2 −Ov nAGG with three-dimensional DNA nanomachine-mediated multioutput amplification for enhanced accuracy and sensitivity compared to the single-output method. Therefore, exploring the ECL of ultrasmall nanoparticles via the adjustment of size and surface state provided a valuable indication to a wider investigation and application of novel ECL materials for clinical diagnostic.

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Section: Resultsmentioning

confidence: 91%

Electrochemiluminescence of Ultrasmall Silica Nanoparticles from Size Modulation and Multipath Surface State Adjustment for Ultrasensitive HIV-DNA Fragment Detection

Duan,

Cao,

Zhu

et al. 2024

Anal. Chem.

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Spring Effect Endowing P‐doped Li₃VO₄ With Long‐standing Catalytic Activity for Tuning Cycling Stability of MgH₂

Hu,

Zang,

Wang

et al. 2024

Advanced Energy Materials

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Magnesium hydride (MgH2) is a promising hydrogen storage material for its high hydrogen capacity of 7.6 wt.%. However, the further application is severely hampered by the sluggish reaction kinetics and stable thermodynamics. Introducing catalysts is an effective method to improve the reaction rate, but the catalytic activity tends to decrease with an increasing number of reaction cycles, due to the highly reductive Mg and H species. Herein, the spring effect has been observed in the P doped Li3VO4, in which both V─P and V─V bonds undergo compression and elongation during hydrogen absorption and desorption, respectively. Such a unique self‐regulation spring effect not only improves the reaction kinetics of MgH2, but also maintains the high activity of P doped Li3VO4, thereby ensuring the hydrogen capacity of MgH2 even after 100 loops. This spring effect of chemical bonding, stretched‐recovered‐stretched with the motion between the highly reductive Mg and H species, will provide insight into catalyst design for hydrogen‐related industries.

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Tuning microenvironment of Bi2O3 nanosheets via Ce doping for promoting CO2 electrolysis to formate

Ning,

Liu,

Geng

et al. 2024

Journal of Environmental Chemical Engineering

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BaTiO_3–xN_y: Highly Basic Oxide Catalyst Exhibiting Coupling of Electrons at Oxygen Vacancies with Substituted Nitride Ions

Cited by 5 publications

References 44 publications

Electrochemiluminescence of Ultrasmall Silica Nanoparticles from Size Modulation and Multipath Surface State Adjustment for Ultrasensitive HIV-DNA Fragment Detection

Electrochemiluminescence of Ultrasmall Silica Nanoparticles from Size Modulation and Multipath Surface State Adjustment for Ultrasensitive HIV-DNA Fragment Detection

Spring Effect Endowing P‐doped Li₃VO₄ With Long‐standing Catalytic Activity for Tuning Cycling Stability of MgH₂

Tuning microenvironment of Bi2O3 nanosheets via Ce doping for promoting CO2 electrolysis to formate

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BaTiO3–xNy: Highly Basic Oxide Catalyst Exhibiting Coupling of Electrons at Oxygen Vacancies with Substituted Nitride Ions

Cited by 5 publications

References 44 publications

Electrochemiluminescence of Ultrasmall Silica Nanoparticles from Size Modulation and Multipath Surface State Adjustment for Ultrasensitive HIV-DNA Fragment Detection

Electrochemiluminescence of Ultrasmall Silica Nanoparticles from Size Modulation and Multipath Surface State Adjustment for Ultrasensitive HIV-DNA Fragment Detection

Spring Effect Endowing P‐doped Li3VO4 With Long‐standing Catalytic Activity for Tuning Cycling Stability of MgH2

Tuning microenvironment of Bi2O3 nanosheets via Ce doping for promoting CO2 electrolysis to formate

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Product

Resources

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BaTiO_3–xN_y: Highly Basic Oxide Catalyst Exhibiting Coupling of Electrons at Oxygen Vacancies with Substituted Nitride Ions

Spring Effect Endowing P‐doped Li₃VO₄ With Long‐standing Catalytic Activity for Tuning Cycling Stability of MgH₂