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Extreme low-temperature environments have been one of the important issues that need to be solved for outdoor travel as well as indoor activities. The development of smart heated clothing is receiving more and more attention. Previously reported graphene heating mostly uses thin films, so poor breathability, poor flexibility, and low electrical and thermal conversion rates become a challenge. Herein, a facile dip-drying process was employed to prepare composite graphene and CNT-based heated fabrics and provide an intelligent system with the function of sensing environmental temperature. After detecting the temperature data collected by the sensors, the system calculates a suitable temperature through algorithms in the main control chip. The control system automatically adjusts the temperature of the heated fabric to achieve adaptive temperature adaptation or autonomous adjustment. These composite graphene and CNT-based heated fabrics not only retain the inherent flexibility, comfort, washability, and breathability of textile substrates but also exhibit fast heating capabilities. It can rapidly increase the temperature to around 70 °C within 30 s at a voltage of 5 V, ensuring uniform heating. This intelligent composite graphene and CNT-based temperature control system provides a novel and cost-effective approach for achieving flexible, breathable, and stable temperature control in smart clothing, further promoting the development of thermoregulating textiles. It can be widely applied in various fields such as personal heating, physical therapy, wearable flexible electronic products, and more. [ABSTRACT FROM AUTHOR]

Cu/N co-doped TiO2 nanopowder was prepared with a facile sol–gel method. In the absence of stabilizing agents, the co-doped nanopowder with nanoscaled particle sizes was obtained. Doping didn't change the anatase crystal structure of TiO2. Cuprite Cu2Cl(OH)3 formed in the co-doped nanopowder. Based on ultraviolet–visible (UV–vis) spectroscopy and X-ray photoelectron spectroscopy (XPS) data, the mechanisms of significantly improved photocatalytic activity of the co-doped nanopowder were discussed. The antibacterial evaluation and cytotoxicity test suggested the nanopowder inhibited bacteria significantly under visible light and had ultralow cytotoxicity. This work provided a promising antibacterial agent with potential biomedical applications. [ABSTRACT FROM AUTHOR]

Inorganic perovskite quantum dots (IPQDs) have a series of advantages such as high photoluminescence quantum yield (PLQY), narrow full width at half maximum (FWHM), wide color gamut, and adjustable fluorescence wavelength. In this study, we proposed a facile method to synthesize CsPbBr3 and CsPb(Br/Cl)3 QDs with excellent stability. The IPQD surfaces were modified by chains of EHDAB at room temperature. The obtained CsPbBr3 QDs show cubic shapes with average particle size of about 10 nm. The EHDAB can greatly enhance the PL intensity of IPQDs, and the PL intensity of the solution added to EHDAB was increased by 300% compared with the blank group (without EHDAB). The modified CsPbBr3 QDs can still retain 93.4% of PL intensity after being stored for 12 days at room temperature (25 ℃). The CsPb(Br/Cl)3 quantum dots possessing narrow FWHM of 18 nm were simply obtained by ion exchange at room temperature. The emission wavelength of CsPb(Br/Cl)3 quantum dots could be adjusted from 517 to 456 nm. The results show that the modified IPQDs could be used as potential luminescent materials for optoelectronic devices. [ABSTRACT FROM AUTHOR]

Eu-doped ZnMoO with different doping concentrations were synthesized by a hydrothermal method. The effects of Eu doping on the phase structure and photoluminescence (PL) properties of ZnMoO were investigated. The result showed that the introduction of Eu3+ could lead to phase transition of ZnMoO. With the increase of Eu doping amount, β-ZnMoO was transformed to α phase gradually, which led to different photoluminescence performances. The optimized doping concentration of Eu was 6 mol% for the highest emission intensity at 615 nm. Its CIE chromaticity coordinates were (0.667, 0.331), which were very close to the values of standard chromaticity (0.67, 0.33) for National Television Standards Committee (NTSC) system. Therefore, Eu-doped ZnMoO is considered to be a promising red-emitting phosphor for white LED applications. [ABSTRACT FROM AUTHOR]