PROTEOMICS
·
2016
·Vol. 16
·期 21
·2733-2741
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IF 4.079
Haizhu Lin,Chunhui Deng
In this work, we first immobilized tin(IV) ion on polydopamine-coated magnetic graphene (magG@PDA) to synthesize Sn 4+ -immobilized magG@PDA (magG@PDA-Sn 4+ ) and successfully applied the material to highly selective enrichment of phosphopeptides. The material gathered the advantages of large surface area of graphene, superparamagnetism of Fe 3 O 4 , good hydrophilicity and biocompatibility of polydopamine, and strong interaction between Sn 4+ and phosphopeptides. The enrichment performance of magG@PDA-Sn 4+ toward phosphopeptides from digested β-casein at different concentrations, with and without added digested BSA was investigated and compared with magG@PDA-Ti 4+ . The results showed high selectivity and sensitivity of the Sn 4+ -IMAC material toward phosphopeptides, as good as the Ti 4+ -IMAC material. Finally, magG@PDA-Sn 4+ was applied to the analysis of endogenous phosphopeptides from a real sample, human saliva, with both MALDI-TOF MS and nano-LC-ESI-MS/MS. The results indicated that the as-synthesized Sn 4+ -IMAC material not only has good enrichment performance, but also could serve as a supplement to the Ti 4+ -IMAC material and expand the phosphopeptide coverage enriched by the single Ti 4+ -IMAC material, demonstrating the broad application prospects of magG@PDA-Sn 4+ in phosphoproteome research.
研究领域:
生物化学
·
蛋白质组学
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高影响因子
RSC Advances
·
2014
·Vol. 5
·期 9
·6879-6885
·
IF 3.708
Ping An,Zhurong Liang,Xueqing Xu,Xin Wang,Hu Jin,Nan Wang,Junxia Wang,Furong Zhu
Pure phase kesterite Cu2ZnSnS4 (CZTS) nanocrystals (NCs) have been successfully synthesized via a heating-up method utilizing metal salts as cation sources and thioacetamide (TAA) as a coordinating sulphur precursor in combination with oleylamine (OAm) as a coordinating ligand and solvent. The slower release of H2S from the metal–TAA complexes, as compared with the commonly used sulphur powder, is crucial for control of the grain size and size distribution of the NCs. As dominating coordinating ligands, OAm led to Sn-rich nuclei and kesterite CZTS NCs. The formation of pure phase kesterite CZTS NCs depends significantly on the temperature and Zn2+/Sn4+ molar ratio of the reaction system. The formation mechanism of the pure phase kesterite CZTS NCs has been clarified taking into account the chemical potentials of the elements involved.
研究领域:
材料科学
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纳米技术
·
化学工程
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yuhan Tao,Yi Dong,Jingjing Xu,Mindong Chen
Ion doping represents a viable strategy for improving the photocatalytic performance of semiconductor materials. This study successfully synthesized Sn 4+ -doped Bi 4 O 5 I 2 photocatalysts through an in-situ calcination approach. Structural characterization confirmed that Sn 4+ incorporation induced lattice contraction while increasing the density of active surface sites. Photocatalytic evaluation revealed that the 10 % Sn-BOI catalyst achieved 95.4 % levofloxacin (LOFX) degradation within 40 min under visible light irradiation, exhibiting a reaction rate constant (k) 5.2-fold greater than undoped Bi 4 O 5 I 2 . The catalyst demonstrated excellent stability, retaining high activity through four consecutive recycling tests. Mechanistic studies showed that oxygen vacancies (OVs) generated during doping modified the electronic structure by elevating the valence band maximum and narrowing the bandgap, while simultaneously promoting charge separation through electron trapping. These findings establish an effective methodology for developing photocatalysts to address antibiotic pollution in wastewater.
研究领域:
材料科学
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环境科学
·
光催化
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半导体掺杂
·
废水处理
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 22
·1-13
·
IF 2.8
Ma Kangrui,Wu Jiawen,Wei Derong,Chen Jin,Rong Xuanting,Ding Ruyun,Gu Jia,Ma Xuetiao,Zheng Hui
With the development and use of the electronic and electrical equipment, solving electromagnetic pollution has become a top priority for human health. In this work, ternary co-doped (Ca 2 ⁺, Cu 2 ⁺, Sn 4 ⁺) ions were incorporated into M-type hexagonal barium ferrite (Ba 1-x Ca x Fe 11.6 Cu 0.2 Sn 0.2 O 27 ), and the effects of varying Ca 2 ⁺ doping levels on the crystal structure, surface morphology, and electromagnetic characteristics were thoroughly investigated. Structural characterizations confirms that Ca 2+ substitutes Ba 2+ sites, decreasing the grain size and lattice values while increasing the lattice strain. At x = 0.15, the Ba 1-x Ca x Fe 11.6 Cu 0.2 Sn 0.2 O 27 ferrite achieves the maximum value of saturation magnetization of 67.7 emu/g, the highest RL min value of -44.2 dB@14.3 GHz and effective absorption bandwidth of 3.04 GHz, showing potential as an effective material for absorption applications.
研究领域:
材料科学
·
电磁学
·
固体物理学
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环境科学
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Hongkai Wang,Zhaoying Li,Liyuan Liu,Minmin Han
Sn-doped In 2 S 3 nanoflowers were synthesized via a facile hydrothermal route. • Sn incorporation enables synergistic modulation of electronic and carrier dynamics. • The rapid charge recombination in pristine In 2 S 3 was effectively suppressed. • A markedly enhanced H 2 evolution rate of 9.135 mmol/g/h was achieved. The severe charge-carrier recombination and sluggish migration kinetics fundamentally restrict the photocatalytic efficiency of transition-metal chalcogenides. Herein, we demonstrate a multiscale dual-engineering strategy to synergistically modulate the geometric and electronic structures of In 2 S 3 via Sn incorporation. The heteroatom doping not only triggers a topology-directed morphological transformation from disordered bulk blocks to hierarchical nanoflowers, but also introduces localized defect states near the conduction band. Mechanistic and kinetic analyses reveal that these defect states act as electron-trapping centers, which cooperatively couple with the morphology-guided shortened diffusion pathways to facilitate spatial charge separation and mitigate bulk recombination. Consequently, the optimally Sn-doped In 2 S 3 photocatalyst delivers a robust H 2 evolution rate of 9.135 mmol/g/h, representing a 16.9-fold enhancement relative to the pristine counterpart. This work establishes a rational paradigm for coupling topological reconfiguration with defect-mediated electronic modulation to design highly efficient solar-to-chemical conversion systems. Download: Download high-res image (80KB) Download: Download full-size image
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INTERNATIONAL DAIRY JOURNAL
·
2026
·
IF 3.1
Ximeng Wang,Yanyan Li,Wenhao Zou,Yuanxuan Jiang,Yongqi Yang,Qin Wang,Zhangguo Ma,Rodrigo Ledesma-Amaro,Liping Wang
To improve the storage stability and antioxidant activity of yogurt, an exopolysaccharide (EPS)-producing strain, Lactobacillus fermentum SN4-1, was isolated from traditional Qinghai yak yogurt, and the EPS biosynthetic pathway was analyzed via whole-genome sequencing. A novel EPS (EPS-2) from SN4-1 was purified by anion-exchange chromatography and characterized by HPLC, HPGPC, and FT-IR. SN4-1 was combined with a commercial starter, and its effects on yogurt quality during cold storage were evaluated. Results showed that EPS-2 mainly consisted of mannose, glucose, and galactose (molar ratio 5.93:1.19:1) with an average molecular weight of 40.3 kDa. SN4-1 contained an EPS gene cluster ( eps-2 ) and multiple probiotic-related genes. During cold storage, the EPS content in yogurt with SN4-1 peaked at 144.21 mg kg -1 on day 5. Accordingly, the yogurt exhibited higher hardness, adhesiveness, cohesiveness, and viscosity, with adhesiveness increasing by 198.81%. Its water-holding capacity was 10.35% higher than that of the control on day 15. Moreover, the yogurt demonstrated strong radical scavenging capacities (DPPH 89.49%, ·OH 76.32%, O 2 - 63.23%, ABTS ∙+ 90.14%). These findings highlight the potential of SN4-1 in developing stable, clean-label probiotic yogurt.
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IONICS
·
2019
·Vol. 25
·期 9
·4509-4516
·
IF 2.289
Wang Shuo,Zhu Yu,Liu Bao,Wang Chengyan,Ma Ruixin
Recently, perovskite solar cells (PSCs) have attracted more attention. TiO 2 as the most common electron transfer material in PSCs has been improved by a serious of methods. In this study, a simple method was used to improve the traditional compact TiO 2 properties by doping with Sn 4+ . It demonstrated that the conductivity of the TiO 2 film could be well improved and the band-gap shifted from 3.65 to 3.55 eV with the introduction of Sn ions. The Sn–O–Ti bond was observed in the Sn:TiO 2 film according to the results of XPS. The mesostructured PSCs based on Sn:TiO 2 exhibited negligible J-V hysteresis behavior, and the J sc of the device increased distinctly. The power conversion efficiency (PCE) of the Sn:TiO 2 device was improved from 14.86 to 17.11%, compared with the reference device.
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INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Yuanyuan Li,Hongzheng Pu,Ying Zhou,Fengling Yin,Siwei Chen,Yurou Tang,Pengfei Jiang,Ya Wu,Zhenhua Zhang,Dingfeng Yang
Cation disorder in hydroxide-based perovskites remains relatively under-researched. In this work, novel hydroxide-based perovskite Sn1/3Na2/3Sn(OH)6 was first fabricated by a direct hydrothermal method, and its ability to photodegrade 2,4-dichlorophenol was evaluated. The synthesized photocatalyst is isostructural with MSn(OH)6 (M = Mg, Ca, Sr, Mn, Fe, Co, Ni, or Zn), where the M site is occupied by disordered Sn4+/Na+. Sn1/3Na2/3Sn(OH)6 exhibits outstanding photocatalytic activity under ultraviolet light. Specifically, 99% of 2,4-DCP is photodegraded in 40 min, with approximately 94% of its total chlorine content converted to Cl– anions. Radical trapping experiments indicated that superoxide radical anions (·O2–) play a critical role during the photocatalytic process. Finally, liquid chromatography–tandem mass spectrometry was conducted to monitor the photocatalytic intermediates. Overall, our findings demonstrate that hydroxide-based perovskites with cation disorder show promise for application in photocatalysis.
研究领域:
材料科学
·
环境化学
·
光化学
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INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Lei Zhou,Shuigen Zhou,Xiaowei Liu,Junhao Ma,Ting Zhang,Kailei Li,Yuanyuan Chang,Wei Shen,Ming Li,Rongxing He
Low-dimensional lead-halide hybrids are an emerging class of optical functional material but suffer the problems of toxicity and poor air stability. Among lead-free metal halides, tin(IV)-based metal halides are promising optoelectronic materials due to their robust structure and environmental friendliness. However, their photoluminescence (PL) properties are poor, and the underlying mechanisms are still elusive. Herein, a stable Sn4+-based halide hybrid, (C4H7N2)2SnCl6, was developed, which however exhibits poor PL properties at room temperature (RT) due to the lattice defects and the robust crystal structure. To enhance its PL efficiency, the Te4+ ion with a stereoactive 5s2 lone pair has been introduced into the lattice. As a result, Te4+-doped (C4H7N2)2SnCl6 displays broadband orange emission (∼640 nm) with a PL efficiency of ∼46% at RT. Interestingly, Te4+-doped (C4H7N2)2SnCl6 shows triple emission bands at 80 K, which could be due to the synergistic effect of the organic cations and the self-trapped state induced by Te4+. Additionally, high-performance white light-emitting diodes were prepared using Te4+-doped (C4H7N2)2SnCl6, revealing the potential of this material for lighting applications. This study provides new insight into the PL mechanism of Sn4+-based metal-halide hybrids and thus facilitates the design and development of eco-friendly light-emitting metal halides.
研究领域:
材料科学
·
光学工程
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Huijun Liang,Mengyao Ma,Chencong Li,Lixia Li,Xin Li,Mengjun Sun,Xiang Zhen,Hongjun Chen,Diandian Shi,Jianxun Dong,Xiaobing Wang
Sn 4+ modulated FeSn bimetallic MOF-on-MOF S-scheme heterojunctions are fabricated. • pH and Sn 4+ synergistically control catalyst morphology and composition distribution. • Optimized NM-FeSn exhibits superior N 2 photoreduction activity and stability. • Sn 4+ doping modulates Fe redox state and optimizes interfacial charge kinetics. • In-situ DRIFTS identifies the full NRR pathway on NM-FeSn heterostructure. Solar-driven photocatalytic nitrogen fixation (PNF) represents a sustainable and eco-friendly alternative to the energy-intensive Haber–Bosch process. Nevertheless, its practical implementation is greatly restricted by sluggish N N bond activation, rapid photogenerated carrier recombination, and insufficient multi-electron/proton transfer kinetics. Herein, dual-phase MOF-on-MOF S-scheme heterojunctions with well-tuned Fe Sn bimetallic active sites (NM-FeSn) are rationally constructed by introducing high-valent Sn 4+ via a facile one-pot solvothermal strategy. Benefiting from the unique 4d 10 5s 0 5p 0 electronic configuration, the incorporated Sn 4+ effectively modulates the electronic structure of the NH₂-MIL framework, optimizes the Fe 2+ /Fe 3+ redox ratio, and improves the structural and chemical stability of the catalyst. The optimal NM-FeSn delivers a prominent NH 3 evolution rate of 2.85 mmol L −1 g −1 h −1 and a high apparent quantum yield of 2.49% at 420 nm, which outperforms previously reported Sn-doped MOF-5 and ZIF-8 photocatalysts. On the basis of systematic photoelectrochemical tests, multi-spectroscopic characterizations, and in-situ DRIFTS measurements, the intrinsic S-scheme charge transfer mechanism and Fe Sn bimetallic synergistic effect are unambiguously revealed. Such synergistic effects significantly accelerate interfacial spatial charge separation, suppress photogenerated carrier recombination, and prolong carrier lifetime. This work systematically clarifies the electronic modulation mechanism of high-valent Sn 4+ doping and provides a versatile structural regulation strategy for the rational design of high-efficiency MOF-based heterojunction catalysts toward artificial nitrogen fixation and other energy conversion applications. Download: Download high-res image (106KB) Download: Download full-size image
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Small
·
2023
·Vol. 20
·期 14
·2306666
·
IF 13.3
Wuqi Liu,Wang Fu,Yaju Wei,Guoqiang Yu,Tao Wang,Lingbo Xu,Xiaoping Wu,Ping Lin,Xuegong Yu,Can Cui,Peng Wang
Carrier-selective passivating contacts using transition metal oxides (TMOs) have attracted great attention for crystalline silicon (c-Si) heterojunction solar cells recently. Among them, tantalum oxide (Ta 2 O 5 ) exhibits outstanding advantages, such as a wide bandgap, good surface passivation, and a small conduction band offset with c-Si, which is typically used as an electron-selective contact layer. Interestingly, it is first demonstrated that solution-processed Ta 2 O 5 films exhibit a high hole selectivity, which blocks electrons and promotes hole transport simultaneously. Through the ozone pre-treatment of Ta 2 O 5 /p-Si interface and optimization of the film thickness (≈9 nm), the interfacial recombination is suppressed and the contact resistivity is reduced from 178.0 to 29.3 mΩ cm 2 . Moreover, the Sn 4+ doping increases both the work function and oxygen vacancies of the film, contributing to the improved hole-selective contact performance. As a result, the photoelectric conversion efficiencies of Ta 2 O 5 /p-Si heterojunction solar cells are significantly improved from 14.84% to 18.47%, with a high thermal stability up to 300 °C. The work has provided a feasible strategy to explore new features of TMOs for carrier-selective contact applications, that is, bipolar carrier transport properties.
研究领域:
材料科学
·
光伏技术
·
半导体器件
·
表面物理
·
纳米材料
·
能源材料
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.7
Bao Jiang,Hong-heng Chen,Lei Wu,Xue-yin Fu,Maierhaba Abudoureheman,Qun Jing,Yu-hong Su,Zhao-hui Chen
Aliovalent substitution involving cations with lone pair electrons is a powerful strategy for designing novel optical materials with enhanced properties. Herein, by substituting Sn4+ with stereochemically active Sn2+ in the α/β-LiSn2(PO4)3 parent structure, we successfully synthesized α/β-Li2SnP2O7 pyrophosphates, achieving a remarkable 5.5 time enhancement in birefringence. This oxidation-state-driven transformation converts the symmetric [SnO6] octahedra in α/β-LiSn2(PO4)3 into highly distorted [SnO4] tetrahedra in α/β-Li2SnP2O7. This conversion leads to the bond length distortion index boosting (from 9.42/9.95 × 10–3 to 47.17/49.21 × 10–3) and the bond angle varying (from 26.97/29.65 deg2 to 1054.2/1122.1 deg2), which triggers the [SnP6O24] clusters into [SnP2O9] three-membered rings, repectively. The increased distortion of Sn–O groups and the decreased symmetry of Sn–P–O blocks enhance the optical anisotropy of the compounds effectively. This aliovalent substitution strategy offers a valuable gudience for amplifying the intrinsically low birefringence of phosphates.
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