JOURNAL OF MEMBRANE SCIENCE
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2023
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IF 9.5
Yuxie Jiang,Kai Wang,Yingzhen Zhang,Yan Cheng,Tianxue Zhu,Jianying Huang,Weilong Cai,Yuekun Lai
In this paper, a stainless steel mesh coated with titanium dioxide (TiO 2 @SSM) membrane was developed for the separation of stable oil-water emulsions and the degradation of soluble pollutants. The TiO 2 @SSM membrane showed excellent underwater anti-oil adhesion performance and efficient emulsion separation under gravity (flux of 207.7 L m −2 h −1 and efficiency of 99.58 % for toluene-water emulsion). The emulsion could also be pre-broken by microbubble flotation to enhance the separation performance of the TiO 2 @SSM membrane (microbubble flotation followed by separation has a flux of 369.3 L m −2 h −1 , and efficiency of 99.71 %). And the synergistic operation of separation and microbubble flotation can increase the flux to 451.6 L m −2 h −1 . The membrane showed outstanding stability and could be recycled for more than 20 times without significant deterioration, and demonstrated chemical stability for corrosion resistance test (pH 0–14). In addition, the membrane, which is easily modified with silver nanoparticles , achieves improved photocatalytic degradation properties (efficiency from 58.8 % to 88.7 %) and microbubble flotation effect (flux of 613.4 L m −2 h −1 ). This work provides a rational strategy for the preparation and optimization of inorganic functional membranes for effective emulsion separation and dye degradation, and demonstrates promising applications of the separation and purification in oil-containing sewage and wastewater remediation.
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ACS Nano
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2023
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IF 17.1
Yuxuan Zhang,Teng Wang,Renquan Hu,Guangchao Qing,Ningqiang Gong,Yong Yang,Xing-Jie Liang
Hierarchical multiscale wrinkling nanostructures have shown great promise for many biomedical applications, such as cancer diagnosis and therapy. However, synthesizing these materials with precise control remains challenging. Here, we report a sulfur doping strategy to synthesize sub-1 nm NiFe hydroxide ultrathin nanosheets (S-NiFe HUNs). The introduction of sulfur affects the reduction of the band gap and the adjustment of the electronic structure, thereby improving the light absorption ability of the S-NiFe HUNs. Additionally, S-NiFe HUNs show a multilayered nanobowl-like structure that enables multiple reflections of incident light inside the nanostructure, which improved the utilization of incident light and achieved high photothermal conversion. As a result, the as-prepared product with hydrophilic modification (dS-NiFe HUNs) demonstrated enhanced tumor-killing ability in vitro. In a mouse model of breast cancer, dS-NiFe HUNs combined with near-infrared light irradiation greatly inhibited tumor growth and prolonged the mice survival. Altogether, our study demonstrates the great potential of dS-NiFe HUNs for cancer photothermal therapy applications.
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ACS Applied Nano Materials
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2023
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IF 5.9
Hongyu Lv,Xin Tang,Menglu Chen
With high quantum efficiency, unique bandgap, and narrow emission band, all-inorganic CsPbI3 halide perovskite nanocrystals have been widely acknowledged as competitive candidates for pure red light-emitting diodes (LEDs). However, the large-scale manufacturing and stability of CsPbI3 perovskites are the main obstacles for practical LEDs. In this work, by Mg2+/Yb3+ codoping, we successfully improve the luminous intensity (192%) in an ambient environment. What is more, these ionic doped CsPbI3 perovskite nanocrystals are thermally stable at 120 °C. Based on these perovskite nanocrystals, we also fabricate large-scale patterned LEDs (25.4 × 25.4 mm). At a bias voltage of 6 V, the fabricated LEDs exhibit a luminance of 749 cd m–2. At a current density of 6.4 mA cm–2, the fabricated LEDs achieved an external quantum efficiency of 10.9%. This result is expected to fuel the rapid growth of large-area pure red LEDs.
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CHEMICAL ENGINEERING SCIENCE
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2023
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IF 4.7
Yijian Yin,Jun-Xuan Jin,Gao-Peng Ren,Ke-Jun Wu,Chao-Hong He
Cesium lead halide perovskite nanocrystals (CLHP NCs) have demonstrated their unique optical properties in next-generation lighting and display devices through controlling the size, shape, and composition. However, achieving their target-specific synthesis with numerous reaction parameters via traditional methods requires long and tedious optimization. Herein, a fully automated microfluidic meta learner (AMML) coupled with coiled flow inverter reactors (CFIR) is developed for facilely synthesizing desired CLHP NCs. CFIR offers a strong support in reagent mixing for AMML, producing high-quality NCs with negligible by-products. By concatenating the model-agnostic meta -learning and feedback control, AMML provides quick and accurate locating of target emission CsPb(Br x I 1-x ) 3 NCs in the wide range from 519 nm to 636 nm based on 3 data points, even in the no-prior-knowledge part. AMML exhibits excellent screening ability (25 experiments in 110 min) of reaction parameters for controllable synthesis of CsPbBr 3 NCs. Based on the optimal results, a white light-emitting diode is fabricated with excellent stability and a wide color gamut of 121 % NTSC. AMML offers a novel paradigm for the large-scale synthesis of desired NCs and can be applied to other NCs for intelligent and sustainable discovery.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Xiangrong Li,Ruonan Xu,Li Shi,Tianjun Ni
In this work, four structurally similar flavonols (galangin, kaempferol , quercetin and myricetin) were coated on the surface of (11-mercaptoundecyl)- N , N , N -trimethylammonium bromide (MUTAB)‑gold nanoparticles (AuNPs) by two-step phase transfer and self-assembly, and the cationic MUTAB- AuNPs coated with flavonols (flavonol-MUTAB-AuNPs) were designed. Free radical scavenging and antibacterial experiments show that flavonol-MUTAB-AuNPs greatly improve the scavenging effect on DPPH, hydroxyl and superoxide anion radicals, and significantly enhance the inhibition effect on Staphylococcus aureus and Escherichia coli compared with flavonols and AuNPs. Then γ-globulin, fibrinogen , trypsin and pepsin were selected as representative proteins and their interaction with flavonol-MUTAB-AuNPs were investigated by various spectroscopic techniques . The fluorescence quenching mechanism of these four proteins by flavonol-MUTAB-AuNPs is static quenching. The binding constants K a between them are in the range of 10 3 to 10 6 . The interaction between them is endothermic, entropy-driven spontaneous process, and the main non-covalent force is the hydrophobic interaction. The effect of flavonol-MUTAB-AuNPs on the structure of the four proteins were investigated using UV–vis absorption spectra, synchronous fluorescence spectra and circular dichroism spectra. These results offer important insights into the essence of the interaction between flavonol-MUTAB-AuNPs and γ-globulin/fibrinogen/trypsin/pepsin. They will contribute to the development of safe and effective flavonol-MUTAB-AuNPs in biomedical fields.
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JOURNAL OF NANOBIOTECHNOLOGY
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2023
·Vol. 21
·期 1
·1-17
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IF 10.2
Liu Lili,Chang Meiqi,Yang Rong,Ding Li,Chen Yu,Kang Yulin
Background Primary nephrotic syndrome (PNS) is characterized by edema, heavy proteinuria, hypoalbuminemia and hyperlipidemia. Moreover, podocyte injury is the key pathological change of PNS. Even though the pathophysiological etiology of PNS has not been fully understood, the production of excessive reactive oxygen species (ROS) plays an important role in the development and progression of the disease. Glucocorticoids are the first-line medications for patients with PNS, but their clinical use is hampered by dose-dependent side effects. Herein, we accelerated the rate of conversion from Ce 4+ to Ce 3+ by doping Zr 4+ in ceria-zirconia nanomedicines to treat the PNS rat model by removal of ROS. Results The engineered Ce 0.7 Zr 0.3 O 2 (7CZ) nanomedicines significantly improved the ROS scavenging ability of podocytes at a very low dose, enabling effective inhibition of podocyte apoptosis and actin cytoskeleton depolymerization induced by adriamycin (ADR). Accordingly, podocyte injury was effectively alleviated in rat models of ADR-induced nephrotic syndrome, as confirmed by serum tests and renal tissue staining. Moreover, the mRNA sequencing assay revealed the protective molecular signaling pathways of 7CZ nanomedicines in podocytes. Conclusion 7CZ nanomedicines were highly effective in protecting against ADR-induced podocyte injury in vitro and in vivo at a very low concentration. Graphical Abstract
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Engineering
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2023
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IF 12.8
Xinyang He,Jiaxin Cai,Mingyuan Liu,Xuepeng Ni,Wendi Liu,Hanyu Guo,Jianyong Yu,Liming Wang,Xiaohong Qin
Flexible thermoelectric materials play an important role in smart wearables, such as wearable power generation, self-powered sensing, and personal thermal management. However, with the rapid development of Internet of Things (IoT) and artificial intelligence (AI), higher standards for comfort, multifunctionality, and sustainable operation of wearable electronics have been proposed, and it remains challenging to meet all the requirements of currently reported thermoelectric devices. Herein, we present a multifunctional, wearable, and wireless sensing system based on a thermoelectric knitted fabric with over 600 mm·s −1 air permeability and a stretchability of 120%. The device coupled with a wireless transmission system realizes self-powered monitoring of human respiration through an mobile phone application (APP). Furthermore, an integrated thermoelectric system was designed to combine photothermal conversion and passive radiative cooling, enabling the characteristics of being powered by solar-driven in-plane temperature differences and monitoring outdoor sunlight intensity through the APP. Additionally, we decoupled the complex signals of resistance and thermal voltage during deformation under solar irradiation based on the anisotropy of the knitted fabrics to enable the device to monitor and optimize the outdoor physical activity of the athlete via the APP. This novel thermoelectric fabric-based wearable and wireless sensing platform has promising applications in next-generation smart textiles.
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ACS Applied Materials & Interfaces
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2023
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IF 9.5
Cuizhen Yang,Tingyao Wang,Chengcheng Li,Haiyan He,Dongming Liu,Huajie Huang
In this study, we demonstrate a facile soft chemistry strategy for the in situ growth of two-dimensional (2D) ultrathin PdMo bimetallene tightly coupled with Ti3C2Tx MXene nanosheets (PdMo/Ti3C2Tx) using a robust stereoassembly process. The 2D PdMo bimetallene offers numerous unsaturated Pd atoms and simultaneously induces combined bimetallic alloy and strain effects, while the Ti3C2Tx matrix effectively optimizes the electronic structure of PdMo bimetallene via a face-to-face interface interaction and guarantees exceptional electrical conductivity. As a consequence, the newly designed PdMo/Ti3C2Tx nanoarchitecture expresses remarkable electrocatalytic properties for the formic acid and methanol electro-oxidation, in terms of large electrochemically active surface areas, ultrahigh catalytic activity, strong antipoisoning ability, and dependable long-term stability, all of which are better than those of conventional Pd nanoparticle catalysts supported by Ti3C2Tx and carbon matrices.
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Journal of Physical Chemistry C
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2023
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IF 3.7
Yizhu Wang,Jiaqi Shi,Ruiqi Xiao,Cong Xiao,Huiqin Yao,Lingchen Meng,Hongyun Liu
In this study, metal halide perovskites, which are excellent materials for optoelectronic devices, were examined to construct molecular logic gates. The photoluminescence (PL) and electrochemiluminescence (ECL) properties of the CsPbBr3 nanocrystals (NCs) were effectively maintained in the CsPbBr3@SiO2 NC films; these films were simply prepared by depositing nanocrystals on the electrode surface through the viscosity of SiO2 in the coating. The dual-optical signals of the films were found to have different responses to the external stimuli of Fe(III) and dopamine (DA). The PL signal of the films was quenched by Fe(III), and this effect was exacerbated at a high concentration of DA due to the formation of oxidation products. However, the addition of ascorbic acid (AA) could restore the PL signal. While the ECL signal of the films did not show evident changes with the concentration of Fe(III), the ECL signals quenched by a low concentration of DA could be reverted by Fe(III). Thus, a multiple input–output molecular logic circuit based on the CsPbBr3@SiO2 film electrode system was constructed by using Fe(III), DA, and AA as 3 inputs and the PL and ECL at different states as 6 outputs. A series of logic circuits, including an encoder/decoder, a dual transfer gate, a parity checker, a demultiplexer, and a resettable keypad lock, were successfully simulated. Specifically, a ternary CONSENSUS logic gate with a dual-optical signal output was initially mimicked based on this film electrode. This work could provide a simple approach to design a molecular information system based on the modulated multioptical signals of perovskites and could further expand the potential applications of perovskites in multiple-molecule recognition, chemical information storage, and optoelectronic devices.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2023
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IF 4.4
Xuan Liu,Xiaojia Su,Zhuohang Ren,Lingqiu Yang,Xinyue Zhang,Mingye Ding
Currently, developing advanced optoelectronic materials is of great importance to solving serious problem of fake and shoddy products. Lanthanide-doped nanomaterials are particularly suitable for addressing this issue, but limited by the realization of multiple upconverison (UC) emissions upon a single-wavelength laser excitation. Herein, it is proven that the co-dopant of blue/near-infrared (NIR)-emitting activators (Tm 3+ ) and green/red-emitting centers (Er 3+ ) in a particular designed core–shell nanoarchitecture allows the achievement of multiple luminescence over wide spectral region for optical security. In our study, cubic-phased NaYbF 4 :Tm/Er@CaF 2 nanocrystals have been successfully synthesized through a layer-by-layer coprecipitation strategy, which presents visible multicolor UC luminescence and invisible NIR UC emission upon 980 nm laser excitation by just regulating the laser power and temperature. Significantly, the unique luminescent characteristics enables the designed UC nanoparticles a promising candidate for advanced anti-counterfeiting. This works offers a reference to develop advanced optoelectronic materials for practical application in optical security.
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ADVANCED MATERIALS
·
2023
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IF 29.4
Wei Zhou,Yang Yu,Peigeng Han,Cheng Li,Tong Wu,Zhiling Ding,Runze Liu,Ruiling Zhang,Cheng Luo,Hui Li,Kun Zhao,Keli Han,Ruifeng Lu
Metal halide nanocrystals (NCs) with high photoluminescence quantum yield (PLQY) are desirable for lighting, display, and X-ray detection. Herein, the novel lanthanide-based halide NCs are committed to designing and optimizing the optical and scintillating properties, so as to unravel the PL origin, exciton dynamics, and optoelectronic applications. Sb-doped zero-dimensional (0D) Cs 3 TbCl 6 NCs exhibit a green emission with a narrow full width of half maximum of 8.6 nm, and the best PLQY of 48.1% is about three times higher than that of undoped NCs. Experiments and theoretical calculations indicate that 0D crystalline and electronic structures make the exciton highly localized on [TbCl 6 ] 3− octahedron, which boosts the Cl − -Tb 3+ charge transfer process, thus resulting in bright Tb 3+ emission. More importantly, the introduction of Sb 3+ not only facilitates the photon absorption transition, but also builds an effective thermally boosting energy transfer channel assisted by [SbCl 6 ] 3− -induced self-trapped state, which is responsible for the PL enhancement. The high luminescence efficiency and negligible self-absorption of the Cs 3 TbCl 6 : Sb nanoscintillator enable a more sensitive X-ray detection response compared with undoped sample. The study opens a new perspective to deeply understand the excited state dynamics of metal halide NCs, which helps to design high-performance luminescent lanthanide-based nanomaterials.
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JOURNAL OF NANOBIOTECHNOLOGY
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2023
·Vol. 21
·期 1
·1-17
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IF 10.2
Ren Xunshan,Zhuang Huangming,Zhang Yuelong,Zhou Panghu
Background Tendon injuries have a high incidence and limited treatment options. Stem cell transplantation is essential for several medical conditions like tendon injuries. However, high local concentrations of reactive oxygen species (ROS) inhibit the activity of transplanted stem cells and hinder tendon repair. Cerium oxide nanoparticles (CeONPs) have emerged as antioxidant agents with reproducible reducibility. Results In this study, we synthesized polyethylene glycol-packed CeONPs (PEG-CeONPs), which were loaded into the human umbilical cord mesenchymal stem cells (hUCMSCs) to counteract oxidative damage. H 2 O 2 treatment was performed to evaluate the ROS scavenging ability of PEG-CeONPs in hUCMSCs. A rat model of patellar tendon defect was established to assess the effect of PEG-CeONPs-carrying hUCMSCs in vivo. The results showed that PEG-CeONPs exhibited excellent antioxidant activity both inside and outside the hUCMSCs. PEG-CeONPs protect hUCMSCs from senescence and apoptosis under excessive oxidative stress. Transplantation of hUCMSCs loaded with PEG-CeONPs reduced ROS levels in the tendon injury area and facilitated tendon healing. Mechanistically, NFκB activator tumor necrosis factor α and MAPK activator dehydrocrenatine, reversed the therapeutic effect of PEG-CeONPs in hUCMSCs, indicating that PEG-CeONPs act by inhibiting the NFκB and MAPK signaling pathways. Conclusions The carriage of the metal antioxidant oxidase PEG-CeONPs maintained the ability of hUCMSCs in the injured area, reduced the ROS levels in the microenvironment, and facilitated tendon regeneration. The data presented herein provide a novel therapeutic strategy for tendon healing and new insights into the use of stem cells for disease treatment. Graphical Abstract
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