Self-Assembled Black Phosphorus-Based Composite Langmuir–Blodgett Films with an Enhanced Photocurrent Generation Capability and Surface-Enhanced Raman Scattering Properties

Wang, Ran; Li, Min; Zhou, Jingxin; Zhang, Lexin; Wang, Mingli; Jiao, Tifeng

doi:10.1021/acsomega.0c05832

Cited by 13 publications

(13 citation statements)

References 46 publications

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“…To further study the thermal stability of the prepared composite film, thermogravimetric analysis was performed on the composite fiber membrane KH550-CNC/WPU/PVAL, as shown in Figure . − All samples were tested under an argon atmosphere. The overall thermal stability shown is relatively similar, all of which are three-stage changes.…”

Section: Resultsmentioning

confidence: 99%

Construction of Nanocrystalline Cellulose-Based Composite Fiber Films with Excellent Porosity Performances via an Electrospinning Strategy

Yin

Yan

et al. 2021

ACS Omega

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Cellulose nanocrystals (CNCs) not only have environmental protection characteristics of being lightweight, degradable, green, and renewable but also have some nanocharacteristics of high strength, large specific surface area, and obvious small size effect, so they are often used as a reinforcing agent in various polymers. However, the hydrogen bonding between CNC molecules is relatively strong, and they can easily aggregate and get entangled with each other. In this work, several large-porosity composite nanofiber films, KH550-CNC/waterborne polyurethane (WPU)/poly(vinyl alcohol) (PVAL) with KH550-modified CNCs, are prepared using poly(vinyl alcohol) (PVAL) solution and electrospinning technology. A variety of characterization methods are used to discuss and analyze the nanofiber materials, and the effects of the added amount of CNCs modified with KH550, spinning voltage, curing distance, and advancing speed on the morphology and performance of composite fibers are discussed separately. The results show that when the content of KH550-CNC is 1%, the composite fiber film obtained has the most regular morphology and the best spinnability, which is convenient for the specific application of fiber materials in a later period. In addition, the porosity of the obtained composite fiber film is 62.61%. Therefore, this work provides a theoretical basis and research strategy for the preparation of higher-porosity composite films as well as the development of new textile materials.

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Section: Resultsmentioning

confidence: 99%

Construction of Nanocrystalline Cellulose-Based Composite Fiber Films with Excellent Porosity Performances via an Electrospinning Strategy

Yin

Yan

et al. 2021

ACS Omega

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“…The work demonstrated the possibility to exploit the photocatalytic properties of a 2D-2D system based on 2D bP to develop a novel metal-free heterostructure catalyzing the H + /H 2 reduction from water. [50] Copyright 2021, American Chemical Society.…”

Section: Vdw Heterostructures Of 2d Bp Based On Inorganic Compoundsmentioning

confidence: 99%

“…The (green) bottom panel represents the Az-bPNS-MB (Az-bPNS-NR) film transfer on transparent substrate and the film electrode photoelectric conversion mechanism. Reproduced with permission [50]. Copyright 2021, American Chemical Society.…”

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confidence: 99%

Smart Synthetic and Surface‐Engineering Approaches to Functionalize 2D Black Phosphorus for Real‐Setting Applications

Moschetto

Prescimone

Bolognesi

et al. 2022

Adv Materials Inter

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Phosphorene or 2D black phosphorus (2D bP) has attracted increasing attention within material scientists in the last decade due to its electronic and photophysical properties as a pristine material. Furthermore, the high chemical reactivity of 2D bP enables the engineering of the outermost superficial layers. This tailored functionalization allows to obtain 2D bP‐based systems such as heterostructures with multiple and/or nonstandard functional properties that can be straightforwardly exploited for real‐setting applications. The aim of this review is to summarize the state of the art on the different strategies in the functionalization of 2D bP such as chemical reactivity with organic molecules, decoration with metal and metal‐oxide nanoparticles, passivation with thin layers of metal oxides or polymers, van der Waals coupling with different inorganic 2D materials, blending into polymeric composites. The main physical and chemical properties of all the considered heterostructures and as‐realized derivatives of 2D bP, with a particular focus on the increase of stability in air, are described. Finally, the functional characteristics of each system which are correlated to and involved in the development of specific real‐setting applications, spanning from catalysis, to electronics and optoelectronics, to energy conversion and storage and biodiagnostics, are highlighted.

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“…The two most prominent means of Raman scattering enhancement are electromagnetic and charge transfer. , The former operates through the generation of electromagnetic fields often referred to as hot spots in plasmonic nanoparticles. The nanomaterial’s composition, nanoscale morphology (sharp tips and edges), internanoparticle distance, and hot spot’s density are the factors that critically influence the overall enhancement factor. ,− Presently, the nanostructures of both coinage metals (Ag, Au, and Cu) and semiconductors are investigated for SERS, and those of Au and Ag are the most effective ones. Though tailored colloidal nanoparticles can achieve sensitivity down to the single molecular level, they suffer limited reproducibility due to the factors such as aggregation, less control over their assembly, and target location of the analytes.…”

Section: Introductionmentioning

confidence: 99%

Chemically Etched Nanoporous Copper and Galvanically Displaced Silver Nanoflowers for SERS Sensing

Sajitha

Abraham

Nelliyil

et al. 2021

ACS Appl. Nano Mater.

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Solid-state surface-enhanced Raman spectroscopic (SERS) substrates surmount the limitations of colloidal nanoparticles for many practical chemical and biomolecular sensors. The main bottom-up approaches adopted for SERS substrate fabrication include preparing plasmonic nanoparticles and their deposition to selected surfaces via chemical self-assembly, inkjet printing, spray coating, dip-coating, etc. In contrast, the top-down strategy is to create nanostructures on surfaces via different lithographic techniques (nanoimprint lithography, electron beam lithography), laser ablation, or chemical etching and then depositing a nanolayer of coinage metals. The ease and reproducibility of production, high enhancement, and uniformity of performance are the requirements for a reliable SERS substrate. This work describes an easy process for preparing SERS substrates from a less expensive and readily available material, brass. The treatment of brass with hydrochloric acid caused preferential etching of Zn from the surface, leaving a uniform Cu nanoporous substrate (Cu NPS ). The subsequent galvanic displacement of Cu NPS with AgNO 3 resulted in silver nanocrystal overgrowth, as evidenced by microscopic, spectroscopic, and elemental studies. The corresponding SERS studies with 4-mercaptophenylboronic acid (4-MPBA) as the probe molecule revealed ∼30 and ∼300 times improved performance compared to Cu NPS and the parent brass substrates, respectively. Further, we explored the possibility of sensing creatinine, the biomarker for kidney functioning. Creatinine followed a Freundlich type adsorption, and the SERS substrate developed herein exhibited a sensitivity down to 1.7 pg/mL.

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Self-Assembled Black Phosphorus-Based Composite Langmuir–Blodgett Films with an Enhanced Photocurrent Generation Capability and Surface-Enhanced Raman Scattering Properties

Cited by 13 publications

References 46 publications

Construction of Nanocrystalline Cellulose-Based Composite Fiber Films with Excellent Porosity Performances via an Electrospinning Strategy

Construction of Nanocrystalline Cellulose-Based Composite Fiber Films with Excellent Porosity Performances via an Electrospinning Strategy

Smart Synthetic and Surface‐Engineering Approaches to Functionalize 2D Black Phosphorus for Real‐Setting Applications

Chemically Etched Nanoporous Copper and Galvanically Displaced Silver Nanoflowers for SERS Sensing

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