JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Hongyan Xi,Xinyu Yang,Wenhao Guo,Huaipeng Pang,Xuning Leng,Xiaolei Huang,Fanlu Meng
Amidst the escalating global energy crisis, the quest for efficient electrocatalysts for water splitting has become increasingly imperative. Herein, we develop a bifunctional electrocatalyst comprising RuNi alloy nanoparticles anchored on fluorine-doped NiMoO 4 nanorods (RuNi-F-NiMoO 4 ), engineered for efficient hydrogen production from seawater and urea oxidation reactions. The strategic F doping effectively reduces the difference in work functions and modulates the electronic interactions between the RuNi alloy and the NiMoO 4 substrate, enhancing electron transfer kinetics and significantly improving electrocatalytic activity and stability. Notably, the RuNi-F-NiMoO 4 exhibits outstanding hydrogen evolution reaction performance in both alkaline freshwater (248 mV at 1 A cm −2 ) and alkaline seawater (277 mV at 1 A cm −2 ), enabling industrial-scale high-current–density hydrogen production and maintaining durability over 1,000 h at 100 mA cm −2 in alkaline seawater. Furthermore, RuNi-F-NiMoO 4 achieves a current density of 1 A cm −2 at a low potential of 1.59 V during the urea oxidation reaction, and facilitates a complete urea total cracking system operating at 1.88 V at 1 A cm −2 in alkaline seawater, thereby reducing energy consumption for hydrogen production. This work offers a promising avenue for the development of efficient electrocatalysts in seawater electrolysis and urea oxidation, potentially advancing sustainable energy technologies.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Chentao Hou,Hualin Liu,Mingyuan Zhang,Liping Wang
The TiO 2 has the problems of low utilization of visible light and high photogenerated carrier recombination rate. The photocatalytic activity of TiO 2 can be significantly improved by introducing F ion and narrow band gap material Ag 2 S. When F ions are present on the {001} surface of TiO 2 , surface F ions drive positively charged holes across the {001} surface, creating a synergistic effect that promotes the separation of electron-hole pairs. During the sample composite process, a certain amount of Ag will be precipitated to form an all-solid Z-type heterojunction structure of Ag 2 S, Ag and F-TiO 2 , which can improve the electron-hole separation efficiency. The results of XPS characterization confirmed the migration of F ion and the precipitation of Ag. The Ag 2 S/F-TiO 2 composite sample was referred to as AT for short, and the corresponding ratio was 1:10,1:20,1:30,1:40, the optimal sample AT 1:20 degraded 95.6% tetracycline hydrochloride within 2 hours. This work simultaneously realizes TiO 2 self-modification (synergistic effect of F ion migration and TiO 2 {001} crystal surface) and composite modification (formation of all-solid Z-type heterojunction), a new idea of studying TiO 2 self-modified cooperative heterostructures is proposed, and the good application potential of AT nanocomposites in photocatalytic water treatment technology is demonstrated.
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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Miaoyang Hu,Ayiguzaili Manglike,Xiaozhu Li,Jin Wei,Xinyu Lou,Jing Liu,Zhiru Tang,Weiping He,Guixiang Ji,Wenjuan Wang,Tengfei Ma,Rong Gao,Jun Wang
Bisphenol F (BPF), a major bisphenol A substitute widely used in packaging and pharmaceuticals, poses emerging neuropsychiatric risks with unknown mechanisms. Here, we first linked elevated urinary BPF in newly diagnosed depressed patients to human depressive phenotypes. In mice, we found that BPF exposure resulted in depletion of Lactobacillus acidophilus (L. acidophilus) , whose transplantation obviously reversed the depression-like behaviors. With the Multi-omics (16S rRNA sequencing, untargeted/targeted metabolomics) assays, we revealed the two key reduced target metabolites produced by L. acidophilus , indole-3-lactic acid (ILA) and indole-3-acetic acid (IAA). Exogenous supplementation of ILA/IAA strikingly rescued the BPF-induced depressive behaviors. Mechanistically, the molecular docking and microscale thermophoresis results showed that BPF serves as a novel exogenous aryl hydrocarbon receptor (AHR) ligand, competing with ILA/IAA at MET109/LEU110 to activate cytochrome P450 1B1 (CYP1B1) signaling; Critically, knockout of AHR in mice (AHR -/- ) substantially impeded the BPF induced depression like behaviors, CYP1B1 activation and microglia mediated abnormal synaptic pruning. Collectively, the present study uncovers a novel "microbiota-indole metabolite-AHR-CYP1B1" axis mediating BPF-induced depressive changes, supporting targeted interventions (e.g., L.acidophilus ) transplantation, ILA/IAA supplementation, AHR modulation) as potential therapies for neuropsychiatric disorders induced by BPF.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Zhijia Liao,Ninghao Chu,Zhenyu Yuan,Yanbai Shen,Fanli Meng
This study successfully synthesized “silver ear-like” Co(OH)F using 15 nm SiO 2 spheres as seeds. Gas sensitivity of Co(OH)F with and without SiO 2 spheres to toluene was compared at different annealing temperatures. The results demonstrate that the Co(OH)F-Si-350 sensor exhibits optimal gas sensitivity to toluene, with a response of 35 (R g /R a ) to 100 ppm of toluene at 220℃, with response and recovery times of 50 s and 80 s, respectively. Notably, the sensor detected toluene concentrations as low as 50 ppb, indicating good sensitivity to low concentrations. These findings suggest that the structural transformation resulting from the introduction of SiO 2 nanospheres, forming ultra-thin nanosheet clusters (∼12 nm), provides abundant active sites, effectively promoting substance diffusion and adsorption/desorption processes. Additionally, the incorporation of fluorine enhances the Lewis acidity of the material, facilitating the formation of stable adsorption states for gas molecules on the surface. These results reveal the significant impact of the structural transformation caused by the introduction of SiO 2 nanospheres on gas sensitivity, providing a strong theoretical foundation for further optimizing gas sensor design.
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JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
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2013
·Vol. 68
·期 1
·121-127
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IF 1.66
Song Chen-lu,Wang Ju,Zeng Meng-long,Zhu Jian-qiang,Liu Yong,Xu Gang,Han Gao-rong
Fluorine-doped TiO 2 thin films featuring columnar structure were prepared on fluorine-doped tin oxide (SnO 2 :F) substrate using a sol–gel method. The F doping ratios were varied in the range of 0–8 %. The effect of [F]/[Ti + F] ratio on the structural, morphological, optical, photocatalytic and low-emissivity properties has been investigated in detail. X-ray diffraction studies revealed that all the composited films are mainly composed of anatase TiO 2 and rutile SnO 2 without other phases. The prepared TiO 2 :F films possessed the columnar morphology with the single layer thickness ranging from 28 to 31 nm. The best photocatalytic activity was obtained for the films with 4 % F doping ratio which is mainly attributed to the highest crystallization and crystallite size. The transmission and hemispherical emissivity of the composite films could still reach approximately 70 % and 0.20, which match the requirements of the Chinese National Standard (GB/T18915.2-2002), promoting the films for the practical applications.
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Communications Biology
·
2023
·Vol. 6
·期 1
·1-14
·
IF 5.9
Zhu Haixia,Wen Zongzhuang,Zhang Aizhen,Liu Dongyue,Wang Hongxiang,Cheng Yin,Yang Xing,Xiao Yu,Li Jianyuan,Sun Daqing,Wu Bin,Gao Jiangang
Spermatogenesis is an extremely complex process, and any obstruction can cause male infertility. RhoGDIα has been identified as a risk of male sterility. In this study, we generate RhoGDIα knockout mice, and find that the males have severely low fertility. The testes from RhoGDIα −/− mice are smaller than that in WT mice. The numbers of spermatogonia and spermatocytes are decreased in RhoGDIα −/− testis. Spermatogenesis is compromised, and spermatocyte meiosis is arrested at zygotene stage in RhoGDIα −/− mice. Acrosome dysplasia is also observed in sperms of the mutant mice. At the molecular level, RhoGDIα deficiency activate the LIMK/cofilin signaling pathway, inhibiting F-actin depolymerization, impairing testis and inducing low fertility in mouse. In addition, the treatment of RhoGDIα −/− mice with Rac1 inhibitor NSC23766 alleviate testis injury and improve sperm quality by inhibiting the LIMK/cofilin/F-actin pathway during spermatogenesis. Together, these findings reveal a previously unrecognized RhoGDIα/Rac1/F-actin-dependent mechanism involved in spermatogenesis and male fertility.
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高影响因子
Celebrity Studies
·
2019
·
IF 0
Susan Ingram
This article charts the importance of Berlin in the constellation of Bowie’s success and probes what stardom means in the context of Berlin. It links what Berlin meant to Bowie with what Bowie’s connection to the city has meant to Berlin in its establishing itself as the ‘poor but sexy’ clubbing capital of Europe. In order to get at the stylistic implications of this form of stardom, I bring together Bowie’s Berlin experiences with those of two countercultural personalities the city brought him together with, who are black stars in their own right: Christiane Felscherinow and Hedi Slimane. In ascertaining that Felscherinow and Slimane share with Bowie a dark aesthetic, which is also a politics and ethics of time and space, I probe the German Romantic lineage of the concepts of constellation and elective affinity and their critical potential via the writings of Berlin-born Walter Benjamin to show that this aesthetic is characteristic of the kind of stardom that the city of Berlin is struggling to maintain in the face of gentrifying pressures. Its appeal, I conclude, lies in the potential it offers for a lifestyle counter to the hegemonic, heteronormative, nuclear-family one of bourgeois modernity.
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CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Qiongfang Zhuo,Jinbao Wang,Junfeng Niu,Bo Yang,Yang Yang
BDD/SnO 2 -F electrode was synthesized by spin-coating and heat treatment, and it was characterized by scanning electron microscope-energy dispersive spectrometer (SEM-EDS), X-ray diffraction (XRD), and linear sweep voltammetry (LSV). Electrochemical oxidation of chlorinated polyfluorinated ether sulfonate (F-53B, ClCF 2 CF 2 CF 2 CF 2 CF 2 CF 2 -O-CF 2 CF 2 -SO 3 K) as PFOS substitute was carried out with the BDD, BDD/SnO 2 , BDD/PbO 2 , and BDD/SnO 2 -F anodes. The effects of F and Sn ratio, current density, initial pH, initial F-53B concentration, the supporting electrolyte, NaCl concentration, and electrode distance on the degradation ratios were investigated. The defluorination and the desulfurization were evaluated by ion chromatography and UV–vis spectra. The intermediate products were analyzed on the liquid chromatography system coupled with a triple-stage quadrupole mass spectrometer (LC-MS/MS). The experimental results showed that BDD/SnO 2 -F had the most outstanding electrochemical oxidation performance. After introduction of F into SnO 2 crystal, the grain size of SnO 2 -F was reduced, the oxygen evolution potential was increased by 0.13 V, and the degradation ratio of F-53B was increased by 15.07%. Under the optimum operating parameters, F-53B removal ratio of 95.6% was obtained, and the defluorination ratio reached 61.39% with NaCl supporting electrolyte concentration of 1 mol/L at current density of 30 mA/cm 2 after electrolysis of 30 min. Finally, the electrochemical degradation pathways and the mechanisms of F-53B were proposed based on the intermediate products and the previous literature reported. This study indicates that the electrochemical performance of BDD anode can be much improved by modification with SnO 2 -F, and BDD/SnO 2 -F anode is kind of effective anode to decompose refractory compounds.
研究领域:
环境科学
·
分析化学
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Ying Jin,Xinwei Chen,Weiyan Wu,Huihui Ge,Li Zhang,Martin M.F. Choi,Wei Bian
The fluoride ion (F − ) is a vital trace element required by biological systems to maintain normal physiological functions, playing a crucial role in development and bone metabolism. However, excessive accumulation of F − can result in fluorosis, arthritis, and other adverse health effects. Critical development of precisely discerning fluoride ion detection systems is imperative. In this work, a zirconium-based metal-organic framework (Zr-MOF) was synthesized via a green hydrothermal process using zirconium chloride and tetrafluoro terephthalic acid (TFTPA) as precursors. The obtained Zr-MOF was combined with curcumin (Cur) to create a fluorescent probe for F − recognition. This probe exhibits superior anti-interference ability and high selectivity, along with a notable sensitivity. The fluorescence intensity (FI) ratio of Cur@Zr-MOF shows a linear reduction with increasing F − concentration, spanning a range 0–40 μM, and achieves a detection limit as low as 0.03 μM. The blue fluorescence of Zr-MOF is significantly attenuated under 365 nm ultraviolet radiation (UV) in the presence of F − , resulting in a notable color change of Cur@Zr-MOF solutions within the 0–40 μM F − range. This phenomenon can be utilized for smartphone-assisted visual detection. The probe's practicality was confirmed via spiked water sample analysis in the 0–36 μM range, with recoveries of 96.8–101.8 %. The Cur@Zr-MOF proposed in this study provides a promising platform for the detection of F − , which is expected to be applied in environmental monitoring and public health.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Liangdi Jiang,Zhouyang Huang,Jiacan Xu,Liqiu Zhang,Ziwen Du
Selectivity is the key for adsorption or recovery of per- and polyfluoroalkyl substances (PFAS) from aqueous environments. In this study, the fluorinated metal–organic frameworks (MOFs) with different fluorine contents were prepared and investigated to evaluate the selective adsorption of an emerging PFAS, sodium p‑perfluorous nonenoxybenzenesulfonate (OBS). Adsorption of OBS increased with the increasing fluorine content of MOFs, and the best fluorinated MOFs showed an excellent selective adsorption capacity. The influence of various co-existing hydrocarbon substances on OBS adsorption was slight. The adsorption amount of OBS was 15-fold to that of the hydrocarbon surfactants (n-caprylic acid). The selectivity was attributed to the fluorinated structures of MOFs whose oil contact angle was up to 101°, and thus the oleophobicity of fluorinated structures made MOFs repel hydrocarbon compounds. Molecular dynamics simulations and density functional theory calculations indicated that the fluorinated structures were able to capture OBS molecules from the long distances (roughly 1–100 nm) via hydrophobic interaction, and then formed a F–F non-covalent interaction which was highly probable to be driven by a dispersion force to further attract OBS fluorinated tails within shorter distances (less than 3.5 Å). The combination of oleophobic and fluorophilic effects contribute to the exclusive selectivity of fluorinated MOFs for OBS molecule.
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Laser & Photonics Reviews
·
2024
·
IF 9.8
Xuemin Wen,Maksym Buryi,Vladimir Babin,David John,Romana Kučerková,Martin Nikl,Qian Wang,Yunyun Li,Wen Li,Fan Yang,Xiaoping OuYang,Yuntao Wu
The development of ultrafast scintillators is critical to the GHz X-ray and time-of-flight (TOF) imaging techniques. Low-dimensional silver-based halides have emerged as promising candidates due to high radioluminescence efficiency and ultrafast decay time. However, the ultrafast scintillation mechanism in silver-based halides, such as Rb 2 AgBr 3 (RAB), remains controversial. Here, the study reveals the origin of ultrafast scintillation timing response in melt-grown RAB bulk crystals. The RAB shows light-yellow emission with a photoluminescence quantum yield (PLQY) of 13.9%. Under the picosecond (ps) pulse X-ray irradiation, RAB has an ultrafast decay time of 3.2 ns that accounts for 40.5% of the total emitted light. The light yield is estimated as 3100 photons MeV −1 under 22 Na irradiation. Based on the temperature-dependent radioluminescence (RL) spectroscopy, electron paramagnetic resonance (EPR) spectroscopy, and spectrally resolved thermally-stimulated luminescence (TSL) glow curves, it is confirmed that the bromine vacancy as the F-center is the origin of the ultrafast scintillation component. These findings provide elaborated and fundamental insights into the ultrafast luminescent mechanisms of low-dimensional silver-based halides, thereby opening up new design horizons in the development of ultrafast scintillators.
研究领域:
材料科学
·
光学
·
辐射探测
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Fayu Wu,Xinru Tong,Zhuo Zhao,Jianbo Gao,Yanwen Zhou,Peter Kelly
The morphology and properties of the transparent SnO 2 :F (FTO) films, deposited by RF magnetron sputtering at varying oxygen flows from 0∼3sccm, were examined. For FTO films deposited with 0∼1sccm O 2 , the polar unsaturated (101) planes were the preferred orientation, resulting in resistivity values as low as 10 −3 Ω cm, and the transparency of 86.5% in the visible range. The saturated (110) orientation planes associated with {101} facets formed knee twin crystallites for the FTO film prepared at 2sccm O 2 . Further increases of O 2 led to severe mis-orientation of the crystals. The average transparency in the visible range increased up to 95%, but these FTO films were hardly conductive due to the oversupply of O 2 . The optical band gaps became wide at first and then narrow again as the increases of the oxygen flow rates.
研究领域:
材料科学
·
薄膜技术
·
光电子学
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