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Carbon Film - Europe PMC

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Last Updated: 04 November 2022

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Green synthesis of carbon quantum dots from wasted enzymatic hydrolysis lignin catalyzed by organic acids for UV shielding and antioxidant fluorescent flexible film

Biomass wastes have been shown to be sufficient for the synthesis of carbon quantum dots by using green and sustainable hydrothermal techniques, and have been used in a variety of fields. However, the yield of CQDs from biomass directly hydrothermal is extremely poor. This research was intended to establish the reliability of implementing blue emissive CQD by a hydrothermal process using enzymatic hydrolysis lignin from biomass waste as the precursor and three organic acids such as citric acid, DL-malic acid, and oxalic acid for conversion. According to HR-TEM results, CQDs modified by organic acids had superior water solubility and reduced particle size than those of CQDs without organic acids. These findings are important in the adoption of low-cost, sustainable, and green technologies to produce CQDs with high quantum yield and expanding the application range of lignin-based CQDs.

Source link: https://europepmc.org/article/MED/IND607921270


Integrated effects of plastic film residues on cotton growth and field carbon sequestration under drip irrigation in arid oasis regions

Mulched drip irrigation is the most common irrigation method for cotton cultivation in arid and semi-arid areas. However, the connection between cotton growth, yield, and carbon balance in cotton fields is uncertain, with different soil RPF levels. Cotton growth indicators at various growth stages and yield indicators were significantly reduced when compared to the soil RPF value, according to the soil RPF value. The presence of RPF in soil reduced the rate and cumulative COu2082 emissions from cotton fields during the growing and fallow seasons, but cotton fields' carbon sequestration decreased dramatically as increasing RPF values increased. The second-year RPF indicators of cotton fields were much lower than the first year, and the permanent remains of soil RPF also created a more hostile crop growing environment.

Source link: https://europepmc.org/article/MED/IND607873853


Molecularly imprinted polymer film loaded on the metal-organic framework with improved performance using stabilized gold-doped graphite carbon nitride nanosheets for the single-step detection of Fenamiphos.

The fenamiphos level in vegetable samples consistently monitors the health of agricultural products is extremely important for scientific textiles. MIP-Au@MOF-235@g-C 3 N 4 had a large surface area and high catalytic activity, allowing the printed sensor to have good electrochemical results with a high sensitivity of 1. 07 bcM and a wide linear range of 0. 01 to 16. 4 u03bcM.

Source link: https://europepmc.org/article/MED/36274331


Bicontinuous, High-Strength, and Multifunctional Chemical-Cross-Linked MXene/Superaligned Carbon Nanotube Film.

An X-band EMI shielding performance of 24 to 70 dB in a narrowband frequency band of 8. 2-40 GHz is achieved, with an SE of more than 60 dB. A surface specific SE of 122 368 dB7g -1 is created, outperforming other common shields, according to experts. The multifunctional wearable bicontinuous films, as well as the cost-effective and scalable manufacturing approach, have demonstrated strong promise for use in wearable devices, defense, antibacterial, and the Internet of Things, thanks in large part.

Source link: https://europepmc.org/article/MED/36260760


Experimental Study of Diamond-like Carbon Film on Aermet100 Steel and First-Principles Calculation of Interfacial Adhesion.

The DLC films made by prenitriding and then carburizing have a smoother and finer texture, with higher sp 3 content than those without prenitriding. The Fe 3 C/diamond's interfacial characteristics are investigated using first-principles results in light of the Fe3 C phase's catalytic effect on the development of DLC films. The effects of alloyed cementite on interfacial adhesion of Fe 2 MC/diamond are also investigated on the basis of the most commonly used HCP site model.

Source link: https://europepmc.org/article/MED/36254838


Voltammetric Determination of 3-Methylmorphine Using Glassy Carbon Electrode Modified with rGO and Bismuth Film.

Borton-Robinson buffer solution using 0. 04 mol L -1 B mol L -1 The planned procedure involves the simultaneous application of a glassy carbon electrode modified with reduced graphene oxide, chitosan, and bismuth film via square-wave voltammetry using 0. 04 mol L -1. The sensor used for 3-methylmorphine detection did not cause any significant difference in the presence of silicon dioxide, povidone, magnesium stearate, urea, ascorbic acid, humic acid, and croscarmellose, according to the results. The results obtained were found to be similar to those obtained from the high-performance liquid chromatography device, which was also used as a reference device. The Bi-rGO-CTS/GCE sensor for the detection of 3-methylmorphine was tested for use of synthetic urine, serum, and river water samples for addition and recovery tests, and the results were found to be similar to those obtained using synthetic urine, serum, and river water samples for 3-methylmorphine determination.

Source link: https://europepmc.org/article/MED/36290997


Temperature Dependence of Electrical Resistance in Carbon Nanotube Composite Film during Curing Process.

The final composite's carbon nanotube film has an excellent mechanical and piezoresistivity, making it suitable as a sensor for process control and reinforcement. This paper developed a CNT/epoxy composite film using the solution dipping technique and investigated the electrical resistance variation of CNT/epoxy composite film during the curing process. The results reveal that two opposing effects on electrical resistanceivity occur at the initial heating stage, including thermal expansion and condensation caused by the liquid resin's wetting force. When the resin viscosity remains stable during the heating process, the electrical resistance rises as a result of thermal expansion. With an increase in resin content, the temperature coefficient of resistance becomes more effective. With a decrease in resin content, an increase in R/R 0 value becomes less noticeable, and R/R 0 indicates a decreasing trend at this time.

Source link: https://europepmc.org/article/MED/36296741


Subthreshold Schottky-contacted carbon nanotube network film field-effect transistors for ultralow-power electronic applications.

We look at a variety of Schotty barrier film field-effect-transistors that are used in the sub-threshold region to produce ultralow-power applications. The thin layer of gate electrostatic control over the SWCNT channel and the SB at the source contact results in rapid channel switching characteristics with a small subthreshold swing, a high current on/off ratio, and a low off-state current.

Source link: https://europepmc.org/article/MED/36130528

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions