Improving Humidity Sensing of Black Phosphorus Nanosheets by Co-Doping Benzyl Viologen and Au Nanoparticles

Abstract Black phosphorus (BP) is a two-dimensional and layered elemental semiconductor that is very sensitive to the subtle fluctuation of relative humidity (RH). However, the practical application of BP material was undesirably plagued by the irreversible degradation under moisture/oxygen atmospheres. To circumvent this limitation, here we prepared BP co-doped with benzyl viologen (BV) and Au nanoparticles as the sensing layer and explored the humidity-sensing performance at room temperature (20 oC). Unlike BP (BP-BV) counterparts, BP-Au (BP-BV-Au) sensors demonstrated unvaried response polarity with increasing RH. And BV introduction improved the recovery characteristics. Additionally, the ternary BP-BV-Au sensors delivered decent selectivity and negligible hysteresis. On the one hand, the in situ reduction of Au nanoparticles consumed lone electron pairs within BP, suppressed the interaction with ambient moisture/oxygen, and improved the operation stability and recovery. On the other hand, hydrophobic BV as the protection layer further hindered water attachment. This co-doping behavior reduced the hole density and ensured the predominant interaction between low-energy sorption sites within BP and water molecules, thus leading to a larger resistance modulation (i.e., stronger response) and quicker reaction kinetics. This work offered a feasible method to propel the practical application and enriched the sensing mechanisms of BP-based humidity sensors.

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RANKING OF FUEL-AIR MIXTURES IN TERMS OF THEIR PROPENSITYTO DEFLAGRATION-TO-DETONATION TRANSITION

PROGRESS IN DETONATION RESEARCH ◽

10.30826/icpcd12a05 ◽

2020 ◽

Author(s):

S. M. FROLOV ◽

◽

V. I. ZVEGINTSEV ◽

V. S. AKSENOV ◽

I. V. BILERA ◽

...

Keyword(s):

Detonation Wave ◽

The Other ◽

Practical Application ◽

Deflagration To Detonation Transition ◽

Other Hand ◽

Pressure Gain Combustion ◽

Reactive Mixture ◽

Detonation Transition ◽

The One ◽

Energy Converting

The term "detonability" with respect to fuel-air mixtures (FAMs) implies the ability of a reactive mixture of a given composition to support the propagation of a stationary detonation wave in various thermodynamic and gasdynamic conditions. The detonability of FAMs, on the one hand, determines their explosion hazards during storage, transportation, and use in various sectors of the economy and, on the other hand, the possibility of their practical application in advanced energy-converting devices operating on detonative pressure gain combustion.

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Au–ZnO Conjugated Black Phosphorus as a Near-Infrared Light-Triggering and Recurrence-Suppressing Nanoantibiotic Platform against Staphylococcus aureus

Pharmaceutics ◽

10.3390/pharmaceutics13010052 ◽

2021 ◽

Vol 13 (1) ◽

pp. 52

Author(s):

Atanu Naskar ◽

Sohee Lee ◽

Kwang-sun Kim

Keyword(s):

Staphylococcus Aureus ◽

Bacterial Infections ◽

Near Infrared ◽

Au Nanoparticles ◽

Synthesis Method ◽

Antibacterial Properties ◽

Black Phosphorus ◽

Infrared Light ◽

Resistant Bacteria ◽

Near Infrared Light

Antibiotic therapy is the gold standard for bacterial infections treatment. However, the rapid increase in multidrug-resistant (MDR) bacterial infections and its recent use for secondary bacterial infections in many COVID-19 patients has considerably weakened its treatment efficacy. These shortcomings motivated researchers to develop new antibacterial materials, such as nanoparticle-based antibacterial platform with the ability to increase the chances of killing MDR strains and prevent their drug resistance. Herein, we report a new black phosphorus (BP)-based non-damaging near-infrared light-responsive platform conjugated with ZnO and Au nanoparticles as a synergistic antibacterial agent against Staphylococcus aureus species. First, BP nanosheets containing Au nanoparticles were assembled in situ with the ZnO nanoparticles prepared by a low-temperature solution synthesis method. Subsequently, the antibacterial activities of the resulting Au–ZnO–BP nanocomposite against the non-resistant, methicillin-resistant, and erythromycin-resistant S. aureus species were determined, after its photothermal efficacy was assessed. The synthesized nanocomposite exhibited excellent anti-S. aureus activity and good photothermal characteristics. The non-resistant S. aureus species did not produce drug-resistant bacteria after the treatment of multiple consecutive passages under the pressure of the proposed nanoantibiotic, but rapidly developed resistance to erythromycin. This work clearly demonstrates the excellent photothermal antibacterial properties of Au–ZnO–BP nanocomposite against the MDR S. aureus species.

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Conjugated Polymer Coating Enabled Light-resistance Black Phosphorus with Enhanced Stability

Nanoscale Advances ◽

10.1039/d1na00403d ◽

2021 ◽

Author(s):

XINGYUN Li ◽

Bin Han ◽

Yaojie Xu ◽

Xiao Liu ◽

Chunhui Zhao ◽

...

Keyword(s):

Conjugated Polymer ◽

Polymer Coating ◽

Black Phosphorus ◽

Two Dimensional ◽

Practical Application ◽

2D Material ◽

Light Resistance ◽

Enhanced Stability

As an advanced two-dimensional (2D) material with unique properties, black phosphorus (BP) has attracted great attention in a variety of fields. One of the main obstacles for practical application of...

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Humidity Sensing and Photodetection Behavior of Electrochemically Exfoliated Atomically Thin-Layered Black Phosphorus Nanosheets

ACS Applied Materials & Interfaces ◽

10.1021/acsami.5b10247 ◽

2016 ◽

Vol 8 (18) ◽

pp. 11548-11556 ◽

Cited By ~ 174

Author(s):

Manisha B. Erande ◽

Mahendra S. Pawar ◽

Dattatray J. Late

Keyword(s):

Black Phosphorus ◽

Humidity Sensing

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B-Mg co-doping behavior of LiFePO4 cathode material: balance of oxygen vacancy and enhancement of electrochemical performance

Ionics ◽

10.1007/s11581-021-04349-7 ◽

2021 ◽

Author(s):

Li Wang ◽

Runhong Wei ◽

Hui Zhang ◽

Keyu Zhang ◽

Feng Liang ◽

...

Keyword(s):

Oxygen Vacancy ◽

Electrochemical Performance ◽

Cathode Material ◽

Material Balance ◽

Co Doping ◽

Doping Behavior ◽

Lifepo4 Cathode

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Enhancement of efficiency in graphene/porous silicon solar cells by co-doping graphene with gold nanoparticles and bis(trifluoromethanesulfonyl)-amide

Journal of Materials Chemistry C ◽

10.1039/c7tc02686b ◽

2017 ◽

Vol 5 (35) ◽

pp. 9005-9011 ◽

Cited By ~ 18

Author(s):

Ju Hwan Kim ◽

Dong Hee Shin ◽

Ha Seung Lee ◽

Chan Wook Jang ◽

Jong Min Kim ◽

...

Keyword(s):

Gold Nanoparticles ◽

Solar Cells ◽

Porous Silicon ◽

Au Nanoparticles ◽

Silicon Solar Cells ◽

Porous Si ◽

Co Doping ◽

Si Solar Cells ◽

First Time

The co-doping of graphene with Au nanoparticles and bis(trifluoromethanesulfonyl)-amide is employed for the first time to enhance the performance of graphene/porous Si solar cells.

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A Theology of Religious and Cultural Tolerance in a Pluralistic Context from Amos 2:1–3

Evangelical Quarterly ◽

10.1163/27725472-08803005 ◽

2017 ◽

Vol 88 (3) ◽

pp. 259-267

Author(s):

William H. U. Anderson

Keyword(s):

First Century ◽

Practical Application ◽

Twenty First Century ◽

The One ◽

Marilyn Manson

The thesis of this article is that Amos 2:1–3 teaches religious and cultural tolerance in a pluralistic context. Amos 2:1–3 is a bizarre text which deals with an act of desecration: the king of Moab burning the king of Edom’s bones. The shocking question this text raises is: why would YHWH the one true God and savior of Israel care about how one pagan king treated another dead pagan king? The juxtaposition of exclusivism and pluralism is the precise mechanism that generates a theology of religious and cultural tolerance from Amos 2:1–3. The second installment of this study makes a practical application of this theology entitled ‘From Marilyn Manson to Amos: Navigating Pluralism in the Twenty-first Century West’.

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Structure and electrochemical performance modulation of a LiNi0.8Co0.1Mn0.1O2 cathode material by anion and cation co-doping for lithium ion batteries

RSC Advances ◽

10.1039/c9ra07873h ◽

2019 ◽

Vol 9 (63) ◽

pp. 36849-36857 ◽

Cited By ~ 3

Author(s):

Rong Li ◽

Yong Ming ◽

Wei Xiang ◽

Chunliu Xu ◽

Guilin Feng ◽

...

Keyword(s):

Thermal Stability ◽

Energy Density ◽

Electrochemical Performance ◽

Transition Metal Oxides ◽

Lithium Ion ◽

Cycling Performance ◽

Practical Application ◽

Co Doping ◽

Layered Transition Metal ◽

Great Energy

Ni-rich layered transition metal oxides show great energy density but suffer poor thermal stability and inferior cycling performance, which limit their practical application.

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