METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
·
2017
·Vol. 48
·期 5
·2535-2542
·
IF 1.642
Zhang Zhong-Lin,Zhou Lin-Zong,Ji De-Bin,Yan Yong-De,Hong Wei,Liu Yu-Hui,Wang Pu,Yin Tai-Qi,Zheng Jia-Ning,Xue Yun,Ye Yuan-Feng
Electrochemical behavior of Nd was studied in NaCl-KCl melt on W and Cu electrodes via cyclic voltammetry and chronopotentiometry. Generally, the reduction of Nd 3+ takes place in two consecutive steps in molten chlorides, such as LiCl-CaCl 2 , LiCl-BaCl 2 , CaCl 2 -NaCl, LiCl-KCl melts. However, the reduction of Nd 3+ ions was found to be through a one-step process: Nd 3+ + 3e − → Nd. The co-reduction behavior of Nd 3+ and Cu 2+ ions and the mechanisms of alloy formation were investigated in NaCl-KCl melt on W electrodes at 988 K (715 °C). Four potential plateaus corresponding to four different kinds of Cu-Nd intermetallic compounds were detected. Cu-Nd alloys were prepared on Cu electrodes at 988 K (715 °C) and 1143 K (870 °C). At 988 K (715 °C), Cu 5 Nd phase was identified by X-ray diffraction. The morphology and micro-zone chemical analysis of the alloys were characterized by scanning electron microscopy equipped with energy-dispersive spectrometry. The alloy film was observed on the Cu electrodes. Moreover, at 1143 K (870 °C), a globate bulk Cu-Nd alloy with Cu 5 Nd, Cu 4 Nd, Cu 2 Nd, CuNd, and Cu phases, as liquid in the melt, was obtained at the bottom of the crucible.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2017
·Vol. 24
·期 22
·18640-18650
·
IF 2.741
Chen Yuan,Lei Xin,Dou Rongni,Chen Yuancai,Hu Yongyou,Zhang Zhiqi
A water-compatible magnetic triclosan (TCS) imprinted material (TCS-CTS-Fe 0 -MIPs) was synthesized for selective enrichment and detection of TCS in real complex water samples. The material was synthesized by using chitosan (CTS) as functional monomer, which has rich surface O- and N-containing functional groups. The TCS imprinted CTS was coated on Fe 0 surface and then cross-linked with glutaraldehyde. Scanning electron microscopy suggested that the imprinted material was covered with a layer of imprinted film, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirmed that the imprinted material had more functional groups (amino and hydroxyl groups) than that of non-imprinted material. The TCS imprinted and non-imprinted materials used in each adsorption experiments were 0.1 mg mL −1 . The maximum adsorption capacity of the TCS imprinted material and non-TCS imprinted material were 20.86 and 15.11 mg g −1 , respectively. The adsorption results showed that selectivity coefficient was 10.151, 1.353, and 8.271 in the presence of p-chlorophenol, 2,4,6-trichlorophenol, and bisphenol-A, respectively. The recoveries of river water and lake water samples were 92.8, 91.3, 92.4, and 81.4, 82.3, 82.1%, respectively, when the samples were spiked with 4, 6, and 8 μg L −1 of TCS with the imprinted material. The adsorption capacity of the TCS imprinted material and non-TCS imprinted material lost 5.2 and 6.2% after six times of recycling. The high selectivity and excellent adsorption capacity of the imprinted material can be attributed to the presence of sterically complementary imprinted sites and high surface, which would also made it more accessible to TCS than that of non-imprinted material. The present study would provide an environmental friendly and convenient method for the removal and the monitoring of TCS in environmental water samples.
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PubMed
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2017
·Vol. 21
·期 10
·2887-2898
·
IF 2.316
Ouyang Ruizhuo,Zong Tianyu,Su Yongfu,Jia Pengpeng,Zhou Shuang,Yang Yang,Feng Kai,Chang Haizhou,Chen Ying,Zhao Yuefeng,Xiong Fei,Miao Yuqing
A new type of Ni 2+ -loaded MWCNT composite was prepared by mixing carboxylated multiwalled carbon nanotubes (MWCNTs) and Ni 2+ ions and allowing them to interact electrostatically. The resulting composite was subsequently used as an electrocatalyst for glucose (Glu) oxidation. Compared with electrodes modified through the addition of free Ni 2+ ions or MWCNTs, the Ni 2+ /MWCNT composite electrode showed greatly improved properties such as hydrophilicity. Investigations of the Ni 2+ /MWCNT composite electrode via inductively coupled plasma atomic emission spectroscopy and nitrogen adsorption–desorption isotherms verified that Ni 2+ ions had been adsorbed onto the surfaces of the MWCNTs in the composite. As expected, a Ni 2+ /MWCNT composite-based sensor showed extraordinary electrocatalytic performance in Glu oxidation. In the concentration range 0–4.3 mM, a good linear relationship between the Glu added and the current generated was observed, with a correlation coefficient ( R
2 ) of 0.9988. The detection limit and sensitivity were calculated to be 0.081 μM and 2285 μA mM −1 cm −2 , respectively. Finally, the new method was successfully applied to determine the Glu in a human blood sample. Recoveries of >100%, indicative of high reliability, accuracy, and precision, were obtained.
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JOURNAL OF SURFACTANTS AND DETERGENTS
·
2017
·Vol. 20
·期 4
·765-775
·
IF 1.45
Zhitian Liu,Yifan Ge,Qi Zhang,Xiang Gao,Xiong Cai,Mengyao Chen,Xuechen Yu
A series of novel cationic gemini surfactants p -phenylenedimethylene bis(alkyldiethylammonium) chloride (abbreviated as G m , m is the carbon numbers of hydrophobic tails) were synthesized. Their surface properties and aggregation behavior were investigated by surface tension, electrical conductivity, steady-state fluorescence, dynamic light scattering and transmission electron microscopy measurements, and compared with gemini surfactants with a flexible hexanediyl spacer and diethylammonium headgroups [abbreviated as C m C 6 C m (Et)]. It was found that G m reached adsorption equilibrium at the air–water interface at the critical micelle concentration, but C m C 6 C m (Et) did not. The packing densities and the aggregation surface charge densities of G m are less than that of C m C 6 C m (Et). Pre-micellar association occurs in aqueous solutions of gemini surfactants with m ≥ 14. The ability to form pre-micellar aggregates increases with increasing the length of alkyl chain. Gemini surfactants with rigid p -xylylene spacer are more prone to form the pre-micellar aggregates. The rigidity of the spacer of gemini surfactants has little effect on the aggregation micropolarity sensed by pyrene. Only vesicles were found in aqueous solutions of these gemini surfactants, and G m with p -xylylene spacer tends to form larger vesicles which have loose structures with low surface charge density.
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Journal of Superconductivity and Novel Magnetism
·
2024
·
IF 1.6
Pi Siwen,Li Jie,Zhang Yingde,Zhou Weina,Shan Shuo,Zhao Xuan
Ce-substituted M-type Sr 1– x Ce x Fe 12 O 19 ( x = 0.00–0.08) ferrites were successfully synthesized via the ball milling method, and the sintering temperature at 1200 °C for 2 h. The synthesized materials were characterized by X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), and vibrating sample magnetometry (VSM). The elemental makeup of the samples was characterized by energy-dispersive spectrometry (EDS). The XRD results showed the crystal structure and purity of the samples. The FTIR spectroscopy indicated tetrahedral and octahedral tensile vibrations of M-type strontium ferrite at two characteristic peak bands of 554 and 454 cm −1 . The FESEM showed that Ce doping resulted in fine grains. The EDS indicated that Ce content increased with decreasing Sr concentration but that the concentrations of other elements remained basically unchanged. The mass ratio of Sr:Fe is calculated from EDS results and the measured Sr:Fe mass ratio is quite close to the mass ratio calculated from the reactants used to synthesize each sample. The VSM showed that at a Ce doping of x = 0.02, the coercivity of the samples reached the maximum, and the coercivity values and the saturation magnetization were 3878.25 Oe and 73.625 emu/g, respectively. And such high thermal stability further determines that Ce-substituted strontium ferrites have infinite potential in application fields (T = 450.2 °C).
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 19
·1-11
·
IF 2.8
Shen Xuri,Kong Jinfang,Wang Fengchao,Zhang Canyun,Li Lan,Chen Jin,Yang Jing,Sun Yu
Two-dimensional (2D) Cu 2+ –Mn 2+ co-doped CsPb 2 (ClBr) 5 nanocrystals (NCs) with various Cu/Mn molar ratios were synthesized by a simple one-pot method at room temperature. Additionally, we encapsulated C 3 H 9 SiCl to protect the co-doped CsPb 2 (ClBr) 5 NCs from moisture. The analysis of the structure and composition confirmed the phase and chemical composition of the 2D co-doped CsPb 2 (ClBr) 5 NCs. Steady-state and time-resolved photoluminescence (PL) spectroscopy revealed the enhanced optical properties of the 2D co-doped CsPb 2 (ClBr) 5 NCs. Meanwhile, the optical properties of Cu 2+ –Mn 2+ co-doped NCs presented the good thermal stability even after 36 days. The photoluminescence quantum yields (PLQYs) related to the Mn 2+ emission of the 2D co-doped CsPb 2 (ClBr) 5 NCs increased to 97.36% at a Cu/Mn molar ratio of 0.05/1. Furthermore, a prototype white light-emitting device (WLED) was successfully assembled by combining orange‒red Cu 2+ –Mn 2+ co-doped CsPb 2 (ClBr) 5 NCs, a CsPbBr 3 film, and a 365 nm commercial UV chip; this prototype confirms its potential for a wide range of applications in general lighting.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 5
·1-12
·
IF 2.8
Chen Zheng,Hou Junxin,Jin Xiangwei,Zheng Lingxia,Liu Fenghua,Li Zhixiang
The utilization of the high-entropy effect and the cocktail effect in high-entropy oxides has significantly expanded the horizon for material design and performance enhancement. Consequently, the fabrication of high-entropy oxides has emerged as a focal point of recent research. High-entropy oxides that serve as cathode materials for battery electrodes must exhibit high electrical conductivity. In this study, a high-entropy oxide (La 0.2 Ba 0.2 Cu 0.2 Sn 0.2 Ni 0.2 ) 3 O 4 was synthesized using the high-temperature solid-state reaction method. A systematic investigation was conducted to analyze the impact of varying sintering temperatures on the phase structure and electrical properties of the material. The findings indicate that the high-entropy oxide under study possesses commendable electrical conductivity. The electrical conductivity of the material was observed to increase initially and then decrease with the elevation of sintering temperature. Optimal electrical conductivity was achieved at a sintering temperature of 1280 °C. The temperature-dependent electrical conductivity of the sample was found to increase initially and then decrease, with a nominal conductivity of 20.062 S·cm −1 at 25 °C, and a stepwise increase to 30.06 S·cm −1 at 250 °C. This material holds promising potential for applications in energy, electronics, and catalysis sectors.
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JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 25
·11440-11453
·
IF 3.5
Mohite Dadaso D.,Chavan Sachin S.,Lokhande P. E.,Dubal Sumit,Kadam Vishal,Jagtap Chaitali,Rednam Udayabhaskar,Salve Maruti,Chaure N. B.,Al-Asbahi Bandar Ali,Kumar Yedluri Anil
Supercapacitors (SCs) have fascinating potential for the energy storage systems of the future due to their exceptional power delivery and quick charge and discharge capabilities. However, its energy density continues to be a barrier to its general use. This study investigates the electrochemical properties of electrospun polyacrylonitrile (PAN) nanofiber (NF) composites embedded with cobalt hydroxide (Co(OH) 2 ) nanoparticles (NPs) for SC electrodes. The synthesis of CNFs involves electrospinning PAN solutions loaded with Co(OH) 2 precursors, followed by heat treatment to enhance structural integrity and electrochemical performance. The crystallographic and morphological study of the composite fibres was conducted through different characterization methods. The electrochemical performance of Co 3 O 4 /PAN CNFs-based composite electrodes is evaluated through CV, GCD, and EIS measurements, revealing their suitability for SC applications. The findings reveal that the synergistic effects of Co 3 O 4 NPs within the PAN NFs contribute to enhanced specific capacitance, cyclic stability, and rate capability, thus offering significant prospects for the development of high-performance SCs. The Co 3 O 4 /PAN CNFs//AC device is constructed using PVA/KOH gel electrolyte, which demonstrated an energy density of 11.19 Whkg −1 at a power density of 1000 Wkg −1 . The device exhibits 69% capacitance retention over 3000 cycles at 100 mVs −1 , indicating strong cycling stability and electrochemical reversibility, which are crucial for practical applications.
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JOURNAL OF NANOBIOTECHNOLOGY
·
2026
·
IF 15
Zhao Huanyu,Wang Wenjing,Liu Xueling,Wu Xiangying,He Yuxin,Gao Chenchen,Shi Qingying,Zhao Huabing,Meng Xuan
Sonodynamic therapy (SDT) is a promising ROS-mediated antitumor strategy, yet its therapeutic efficacy is frequently restricted by intracellular antioxidant defenses and insufficient ferroptotic amplification. Herein, we developed a multi-stimuli-responsive metal-organic framework (MOF)-based nanoplatform using disulfide-containing imidazole ligands coordinated with zinc ions, in which the sonosensitizer protoporphyrin IX (PpIX) was physically encapsulated (PIssI). Upon ultrasound irradiation, the nanocarrier generated excessive reactive oxygen species (ROS), while intracellular glutathione (GSH) was continuously depleted through thiol-disulfide exchange, resulting in glutathione peroxidase 4 (GPX4) suppression, lipid peroxide accumulation, and amplified ferroptosis. Meanwhile, protonation of imidazole groups in acidic lysosomal compartments induced lysosomal membrane permeabilization and dysfunction, which subsequently blocked autophagic flux and aggravated intracellular oxidative stress. Transcriptomic analysis, ferroptosis rescue experiments, redox biochemical assays, and lysosomal functional evaluation collectively demonstrated that the nanoplatform rewires lysosome-associated redox homeostasis rather than merely inducing transient oxidative injury. In CT-26 tumor-bearing mice, the tailored nanocarrier exhibited markedly enhanced tumor accumulation and antitumor efficacy with minimal systemic toxicity. Unlike conventional ROS nanomedicines that primarily rely on cytosolic oxidative damage, the current system converts lysosomes from metabolic recycling hubs into ferroptotic amplifiers through organelle-level redox regulation. This work highlights lysosomal dysfunction as an additional dimension for ferroptosis-sensitized SDT and provides a new strategy for ROS-amplified cancer therapy. Graphical abstract
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Nature Communications
·
2026
·
IF 18.1
Liao Renjie,Fu Defeng,Xu Zaoxu,Liang Han,Zhou Xiaoran,Chen Yiling,Liu Xueqi,Cheng Jiajun,Li Chen,Xia Huihua,Li Gailing,Feng Diewen,Chen Wei,Chen Yang,Chen Longchao,Huang Zihang,Chen Qingbin,Chen Dexia,Xuan Shuguang,Zhang Changling,Lu Yongyi,Wang Hui,Feng Taiqing,Bao Yuanye,Zhao Luyang,Liu Erkai,Wang Gufeng
The advent of spatial transcriptomics has dramatically expanded our ability to study the vast network of cell-cell interactions at the molecular level in tissue. Among current methods, sequencing-based approaches have great potential in discovery because of their unbiased capture of the whole transcriptome. In the last couple of years, the spatial resolution for the capture addresses has been improved from ~100 μm to <1 μm, well below the size of a mammalian cell. However, the capture efficiency of sequencing-based methods is generally low, which diminishes the effect of high capture resolution and negatively impacts subsequent data interpretation. Here, we introduce a spatial transcriptomic system, which provides ~1 μm capture resolution and a much higher capture efficiency. We demonstrate that as high as ~14,000 UMIs can be captured from mouse testis sample per 10 × 10 μm² area at a sequencing saturation of 0.43. Rare cells organized in single-cell-layers can be recovered when the data was analyzed at an effective resolution of 2 μm.
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Rice
·
2026
·Vol. 19
·期 1
·
IF 5.8
Shafi Ullah,Muhammad Ateeq,Dongliang Xiong,Atika Khan,Liwu Sui,Ehtisham Hassan Khan,Muhammad Waqas,Na Yang,Huang Jianliang
Cold stress significantly impairs the rice (Oryza sativa L.) growth and yield, particularly in temperate regions where abrupt temperature fluctuations often occur during the early growth stages. Given the need for novel strategies to improve crop cold tolerance, we evaluated the efficacy of iron oxide nanoparticles (Fe 2 O 3 ) in enhancing rice cold stress resilience. The reported mechanisms involve promoting plant growth and development, alleviating oxidative stress and inducing defense responses. Using RNA-seq, we analyzed the physiological and transcriptomic responses of rice to cold stress and Fe 2 O 3 treatment. Under cold stress, the NPs elicited a strong antioxidant response-elevating superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) activities, which led to a marked reduction in oxidative damage, as shown by decreased ROS and MDA levels. Transcriptomic analysis further revealed that NP treatment modulated key pathways related to carbohydrate metabolism, photosynthesis, hormone signaling, and antioxidant metabolism. Collectively, our findings establish that Fe 2 O 3 nanoparticles ameliorate cold stress by preserving chloroplast structure, stomatal architecture, reduce oxidative stress marker, enhancing antioxidant defense system and stabilize photosystem and providing a promising nanozyme-based approach for rice protection against cold induce damage.
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高影响因子
Nature Biomedical Engineering
·
2026
·
IF 26.3
Liang Sen,Li Jingtao,Li Qi,Jiang Tianhe,Tian Yajie,Han Qingquan,Jing Yafeng,Wang Shuai,Li Jieling,Wang Anhe,Bai Shuo
Gastrointestinal fistulas (GFs) represent one of the main causes of morbidity and mortality. While endoscopic techniques provide a minimally invasive approach to GF repair, offering advantages over conventional surgical approaches, the integration of endoscopic delivery with hydrogel sealants in user-friendly and easy processes approaches remains a great challenge. Here we develop a thermoresponsive positively charged poly( N -isopropylacrylamide) (PNIPAM)/Ga 3+ (PGa III ) hydrogel sealant, formed by slug-inspired biomimetic self-assembly. The PGa III integrated injectability and single-step-formed Janus-type adhesion to tissues, simultaneously featuring excellent biocompatibility, water/acid resistance, active shrinkage and antibacterial properties, enabling its effective ready-to-use biological sealant for endoscopic repair of GFs and prevention of postoperative adhesions. To validate the efficacy of PGa III in treating GFs, we demonstrate its effectiveness in repairing GFs and its convenience in non-invasive endoscopic surgery in living Sprague–Dawley rat and Bama miniature pig models. The proposed PGa III holds potential for the repair of fistulas in other organs in vivo, thereby promoting the establishment of safer and more effective clinical treatment options for related diseases.
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