Journal of Central South University
·
2018
·Vol. 25
·期 4
·709-718
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IF 0.761
Tian Qing-hua,Wang Xiao-yang,Mao Fang-fang,Guo Xue-yi
The purpose of this study is to explore the adsorption performance of meso-2, 3-dimercaptosuccinic acid (DMSA) modified Fe3O4@SiO2 magnetic nanocomposite (Fe 3 O 4 @SiO 2 DMSA) for Pb 2+ ions removal from aqueous solutions. The effects of solution pH, initial concentration of Pb2+ions, contact time, and temperature on the amount of Pb2+ adsorbed were investigated. Adsorption isotherms, adsorption kinetics, and thermodynamic analysis were also studied. The results showed that the maximum adsorption capacity of the Fe 3 O 4 @SiO 2 DMSA composite is 50.5 mg/g at 298 K, which is higher than that of Fe3O4 and Fe 3 O 4 @SiO 2 magnetic nanoparticles. The adsorption process agreed well with Langmuir adsorption isotherm models and pseudo second-order kinetics. The thermodynamic analysis revealed that the adsorption was spontaneous, endothermic and energetically driven in nature.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2017
·Vol. 29
·期 5
·4075-4079
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IF 2.019
Wang Wei,Hao Lingyun,Zhang Wei,Lin Qing,Zhang Xiaojuan,Tang Zhengxia
In this paper, CuSbS 2 thin films were prepared by a facile and environmental-friendly chemical solution method at low temperature. The effect of sulfurization temperature was studied. The properties of CuSbS 2 thin films were investigated by X-ray diffraction, scanning electron microscopy, UV–Vis and photocurrent response measurement. The results indicated CuSbS 2 thin films sulfurized at 350 °C showed better crystallinity and no impurity phase. The as-prepared CuSbS 2 film had a band gap of 1.5 eV and an obvious photoconductivity.
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Nature Communications
·
2022
·Vol. 13
·期 1
·1-19
·
IF 17.694
Zhang Xianzhu,Jiang Wei,Xie Chang,Wu Xinyu,Ren Qian,Wang Fei,Shen Xilin,Hong Yi,Wu Hongwei,Liao Youguo,Zhang Yi,Liang Renjie,Sun Wei,Gu Yuqing,Zhang Tao,Chen Yishan,Wei Wei,Zhang Shufang,Zou Weiguo,Ouyang Hongwei
Critical-sized bone defects often lead to non-union and full-thickness defects of the calvarium specifically still present reconstructive challenges. In this study, we show that neurotrophic supplements induce robust in vitro expansion of mesenchymal stromal cells, and in situ transplantation of neurotrophic supplements-incorporated 3D-printed hydrogel grafts promote full-thickness regeneration of critical-sized bone defects. Single-cell RNA sequencing analysis reveals that a unique atlas of in situ stem/progenitor cells is generated during the calvarial bone healing in vivo. Notably, we find a local expansion of resident Msx1+ skeletal stem cells after transplantation of the in situ cell culture system. Moreover, the enhanced calvarial bone regeneration is accompanied by an increased endochondral ossification that closely correlates to the Msx1+ skeletal stem cells. Our findings illustrate the time-saving and regenerative efficacy of in situ cell culture systems targeting major cell subpopulations in vivo for rapid bone tissue regeneration.
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Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Zhang Tianze,Chang Libo,Zhang Xiaofeng,Wan Hujie,Liu Na,Zhou Liujiang,Xiao Xu
The surface and interface chemistry are of significance on controlling the properties of two-dimensional transition metal carbides and nitrides (MXenes). Numerous efforts have been devoted to the regulation of Ti 3 C 2 T x MXene, however, tuning interlayer spacing and surface halogen termination of other MXenes (besides Ti 3 C 2 T x ) is rarely reported while demanded. Here we propose a Lewis-basic halides treatment, which is capable of simultaneously engineering the interlayer spacing and surface termination of various MXenes. Benefited from the abundant desolvated halogen anions and cations in molten state Lewis-basic halides, the -F termination was substituted by nucleophilic reaction and the interlayer spacing was enlarged. Ti 3 C 2 T x MXene treated by this method showed a high specific capacity of 229 mAh g −1 for Li + storage, which is almost 2 times higher than pristine one. Considering the universality, our method provides an approach to regulating the properties of MXenes, which may expand their potential applications in energy storage, optoelectronics and beyond.
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MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 11
·1-11
·
IF 5.3
Huang Ziyu,Yang Guangwei,Deng Qiuling,Zhang Xuhui,Wei Xiaoping,Li Jianping
Methidathion (MTDT), a common organophosphorus pesticide with high insecticidal activity, is widely used for pest control. However, the misuse of MTDT leads to widespread residues and endangers human health. Therefore, it is crucial to develop a simple and highly sensitive method for the detection of MTDT residues. Herein, ZIF-90/MnO 2 /g-C 3 N 4 /Fe 3 O 4 composite particles were synthesized: The MnO 2 nanosheets could absorb the energy of the excited g-C 3 N 4 to quench the ECL of g-C 3 N 4 while ZIF-90 acted as a mimetic enzyme to catalyze the formation of thiocholine from MTDT. The thiocholine caused the reduction of MnO 2 to Mn 2+ , restoring the ECL signal of g-C 3 N 4 . Combined with molecular imprinting technique, an electrochemiluminescence sensor was constructed for the determination of MTDT. The determination range was 1.00 × 10 –9 ~ 7.00 × 10 –7 g/L, and the detection limit was 6.58 × 10 –10 g/L. Structurally similar organophosphorus pesticides showed no cross-reactivity. The method has high sensitivity and specificity, and has been successfully applied to the determination of MTDT residue in fruits with recoveries in the range 93.75% ~ 102.37%. Graphical abstract
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-14
·
IF 15.7
Zhang Tao,Zhao Hui-Feng,Chen Zheng-Jie,Yang Qun,Gao Niu,Li Li,Luo Na,Zheng Jian,Bao Shi-Da,Peng Jing,Peng Xu,Liu Xin-Wang,Yu Hai-Bin
Electrocatalytic oxygen evolution reaction (OER) is key to several energy technologies but suffers from low activity. Leveraging the lattice oxygen activation mechanism (LOM) is a strategy for boosting its activity. However, this approach faces significant thermodynamic challenges, requiring high-valent oxidation of metal ions without compromising their stability. We reveal that high-entropy alloys (HEAs) can efficiently activate the LOM through synergistic multi-path electron transfer. Specifically, the oxidation of nickel is enhanced by this electron transfer, aided by the integration of weaker Co-O bonds, enabling effective LOM at the Ni-Co dual-site. These insights allow the design of a NiFeCoCrW 0.2 HEA that exhibits improved activity, achieving an overpotential of 220 mV at a current density of 10 mA cm −2 . It also demonstrates good stability, maintaining the potential with less than 5% variation over 90 days at 100 mA cm −2 current density. This study sheds light on the synergistic effects that confer high activity in HEAs and contribute to the advancement of high-performance OER electrocatalysts.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2025
·Vol. 40
·期 2
·382-388
·
IF 1.1
Cao Tian,Li Wei,Ren Lin,Song Tao,Song Jie,Lin Jiacheng,Yang Li,Liu Wenxiu,Wang Ping,Feng Shaojie
The adsorption of phosphate was conducted by the complex of chitosan/polyacrylamide/ferric(CS/PAM/Fe(III)) prepared. The SEM images and XPS spectra confirmed the successful adsorption of phosphate. The adsorption process was studied by varying the influencing aspects like pH, co-existing ions, contact time, and initial phosphate concentration. The experimental results indicate that the adsorptive capacity decreases with the increase of pH. However, it is commendable that there is still a adsorption capacity of more than 5 mg/g when the pH is 8–11. The adsorption kinetics can be accurately described by the pseudo-second-order model and is controlled by both chemisorption and surface diffusion. The adsorption process is a single layer adsorption. This paper proposed that the adsorption mechanism of CS/PAM/Fe(III) complex is the joint action of electrostatic attraction and ligand exchange.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Deng Jingxiao,Liu Chuanbei,Wen Jianwu,Deng Yongjun,Liu Haifeng,Luo Xu,Zhang Lihua,Liu Laibao
Building structural batteries present broad prospects for future energy storage and zero-energy buildings. However, building structural batteries prepared with cement-based materials currently face technical challenges such as high internal resistance, low energy density, and poor cycle stability. Therefore, through tests such as hydration heat, electrochemical performance, and mechanical properties, this study systematically explores the feasibility and mechanism of using gypsum as an electrode binder to construct building structural batteries. The research results show that gypsum is not electrochemically active and primarily provides mechanical strength in the electrode material. It does not affect the lithium-ion intercalation and deintercalation process in the active material, making it fully feasible as a binder for structural electrodes. As the gypsum content increases, the internal resistance of the electrode material increases, the specific capacity decreases, but the cycling stability improves, and the compressive strength increases. The active material and conductive agent in the electrode promote early gypsum setting and hardening but hinder the later hydration process. When the mass ratio of gypsum to active material to conductive agent is controlled at 8:1:1, the discharge capacity and compressive strength of the electrode material can reach 90 mAh/g and 11.69 MPa, respectively, which shows promise for developing high-performance gypsum-based building structural batteries.
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Food and Bioprocess Technology
·
2024
·
IF 5.3
Zhang Xu,Wang Rui,Zhang Wencong,Chen Cunkun,Ma Chao,Ji Ning,Zhang Nanxin,Lei Jiqing,Tian Yiming,Zhang Panpan
The shelf life of Dictyophora rubrovolvata ( D. rubrovolvata ) has been strongly limited by autolysis, a natural process of self-degradation. Conventional heat treatment methods (hot water or hot air) are not suitable for D. rubrovolvata fruiting bodies because of their fragile and porous structure. Therefore, in this work, we attempted to use microwave treatment (MT/100 W, 75 W, 50 W) to delay autolysis and extend the shelf life of D. rubrovolvata fruiting bodies. The results showed that MT could delay the decrease in cellulose, chitosan, and β-1,3 glucan contents by inhibiting the corresponding enzyme activity and maintaining a high level of energy charge by delaying the decrease in ATP and ADP. Meanwhile, compared with the control group (CK), D. rubrovolvata fruiting bodies after MT had improvements in many qualities during storage (4 °C, 95% RH), including delayed deterioration of water migration, sensory evaluation, browning, shear force, ethanol, malondialdehyde (MDA), relative conductivity, and respiratory rate. Furthermore, D. rubrovolvata fruiting bodies after MT maintained contents of umami compounds compared to CK, which included free amino acids, 5′-nucleotides, and equivalent umami concentration (EUC). The electronic nose (E-nose) results showed that MT maintained a better flavor. Notably, the effect of low power (50 W) was better than that of high power (100 W, 75 W). Thus, microwaves could effectively regulate autolysis and energy metabolism of D. rubrovolvata fruiting bodies during the postharvest period. Therefore, microwaves can be applied as a pretreatment method, providing valuable insights regarding postharvest mushrooms.
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BULLETIN OF MATERIALS SCIENCE
·
2024
·Vol. 47
·期 2
·1-10
·
IF 1.9
Ru Jingjing,Zhao Bing,Zeng Fan,Guo Feiyun
A set of colour tuning K 2 Ba(MoO 4 ) 2 : Dy 3+ /Eu 3+ (KBM: Dy 3+ /Eu 3+ ) phosphors were fabricated by solid-state method. The phase purity of as-prepared materials was validated by XRD and DRS analyses. The KBM: 0.03Dy 3+ sample exhibits two major luminescence lines at 481 and 572 nm when excited by 351 nm light, corresponding to Dy 3+ ions’ typical transitions of 4 F 9/2 → 6 H J (J = 15/2, 13/2). By introducing Eu 3+ ions into KBM: 0.03Dy 3+ phosphor, the ET from Dy 3+ to Eu 3+ ions arises, leading to colour tuning from green via yellowish green to pink with changing Eu 3+ ions’ concentration, along with the lowest CCT of KBM: 0.03Dy 3+ /0.03Eu 3+ sample. It can be verified by PLE and PL spectra analysis combined with the decay times of KBM: 0.03Dy 3+ /yEu 3+ samples. The energy transfer mechanism is also expounded. Meanwhile, the emission intensities at 423 K still maintain 72.8% for Dy 3+ ions and 91.2% for Eu 3+ ions relative to 303 K of the KBM: 0.03Dy 3+ /0.03Eu 3+ sample, displaying its brilliant thermal stability. All these results connote that KBM: Dy 3+ /Eu 3+ phosphors are prospected to be used for the near-UV excited white light-emitting diodes.
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WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 235
·期 6
·1-11
·
IF 3.8
Yu Congrong,Li Mengfan,Guo Xuan,Fan Feifei,Wang Chuanhai
Graphene quantum dots (GQDs), characterized by nanostructures with diameters below 10 nm and strong hydrophilicity, exhibit advantageous migration behavior in groundwater environments. The impacts of ionic strength, cation type and pH on the transport of GQDs in porous media diverge from those observed for other nanosized particles. We investigated the cooperative effects of ionic strength (IS, 1 mM NaCl and 100 mM NaCl, 1 mM CaCl 2 and 10 mM CaCl 2 ), cation types (Na + , Ca 2+ ), and pH (4, 7, 9). Through saturated column experiments and numerical modeling, we observed increased GQDs deposition with rising IS, notably enhanced by the presence of divalent cations due to bridging effects and self-aggregation. In the presence of monovalent cations, acidic environment favored the deposition of GQDs, whereas in the presence of divalent cations, an acidic environment with 1 mM CaCl 2 was the most favorable for the deposition of GQDs, and shifted to an alkaline condition at 10 mM CaCl 2 , which may be due to the deprotonation process and the enhancement of self-aggregation. This research sheds light on critical factors governing the environmental behavior of ultra-small nanoparticles and thereby aids in the assessment of their ecological impact.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 3
·1-14
·
IF 5.3
Zhang Yiwen,Zhao Chenyang,Yan Wen,Tian Tian,Zhao Min,Zhao Longshan
Carbon quantum dots (CQDs) were synthesized from brominated 1-hexadecyl-3-vinylimidazolium and citric acid, and a mixed-mode chromatographic (MMC) stationary phase, which can be used in the RPLC/HILIC/IEC chromatographic modes with a good separation efficiency, was successfully synthesized by click-chemistry bonding to a sulfhydryl-modified silica surface. The successful synthesis of the chromatographic stationary phase was demonstrated by its characterization. The effects of organic phase ratio, column temperature and buffer salts on the column were investigated, established the van’t Hoff equation, and verified the ion-exchange effect of the column by separating benzoic acid and phenolic compounds under different pH conditions. The reversed-phase performance of the column was characterized by Tanaka test. Compounds such as alkylbenzenes, polycyclic aromatic hydrocarbons, and nucleosides can all be separated on the column in a short period of time. The reproducibility and stability of the columns were verified under the corresponding chromatographic conditions, and the results showed good reproducibility and stability of the columns. The chromatographic column was used to separate the base nucleosides in apples, and four base nucleosides were successfully isolated from apples. Graphical
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