JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2024
·Vol. 35
·期 29
·1-10
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IF 2.8
Guo Jiao,Zhang Yin,Zhang Yakun,Shu Rui,Zhang Wei,Chen Aimin,Liu Pengfei,Wang Yuanyuan
The increasing amount of dye wastewater presented significant environmental and public health concerns, underscoring the urgent need to develop an eco-friendly, cost-effective, and sustainable approach to wastewater treatment. Photocatalytic technology is an ideal candidate for wastewater treatment due to its low pollution, high efficiency, and easy operation. In this work, a series of Sn-doped MgIn 2 S 4 photocatalysts were successfully prepared via the hydrothermal method. The 60%Sn–MgIn 2 S 4 showed the best photocatalytic activity, with a degradation rate of 62.5% for methyl orange (MO) over a 60-min driven by visible light. 60%Sn–MgIn 2 S 4 exhibited ideal stability, retaining 85% of its original degradation rate after four cycles of testing. Electrochemical impedance spectroscopy suggested that the 60%Sn–MgIn 2 S 4 possessed the ideal photogenerated charge migration rates. In addition, the photocatalytic active species-capture experiments showed that · O 2 – and · OH were the main active species for the photocatalytic degradation of MO over 60%Sn–MgIn 2 S 4 . This research provided a significant foundation for the development of MgIn 2 S 4 -based photocatalytic materials.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
Frontiers in Materials
·
2022
·
IF 3.985
Liang Hong,Fu Gaosheng,Liu Jinrui,Tang Yueting,Wang Yujue,Chen Shan,Zhang Yanjie,Zhang Chen
Recent developments in 3D printing technology have been applied in the field of tissue engineering to fabricate customized bone repair scaffolds. β-tricalcium phosphate (β-TCP) is a bioceramic material with excellent potential as a scaffold foundation. Doping metallic ions with β-TCP will significantly enhance the mechanical property and bone regeneration performance compared with pure β-TCP specimens. In this study, we proposed a protocol for the fabrication of a Sn-doped β-TCP (Sn@TCP) scaffold using 3D printing technology, and the effect of Sn-doping on the physicochemical properties of the material and its in vitro bioactivity were investigated. Polyethylene glycol and polyvinyl alcohol were used as binder to construct Sn@TCP scaffolds which have good biocompability and can break down into H2O and CO2 after scaffolds sintering. The appearance of the scaffold constructed by 3D printing technology closely matched the computer design. The incorporation of Sn into β-TCP improved the compressive strength of the scaffold. Moreover, the Sn@TCP scaffold retained the inherently good biocompatibility of β-TCP and exhibited better osteoinduction capability than pure β-TCP scaffolds. Notably, the osteoinduction ability of Sn@TCP scaffolds were dependent on the Sn content. In conclusion, the 3D printing of Sn@TCP scaffolds with enhanced mechanical properties and osteoblast-inducing activity show great promise as scaffold materials in bone tissue engineering applications.
研究领域:
生物材料学
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组织工程学
·
医学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Shu Wang,Xin Li,Yuan Chen,Wenlong Yang,Shuang Han,Hui Zhang
The artificial-photosynthesized S-scheme heterojunction for photochemical energy conversion has inspired promising implications for green environmental remediation. Herein, we develop a visible-light response Sn-CdS/ZnFe 2 O 4 heterostructure to exhibit efficient photo-Fenton functionalities on the degradation of dye RhB and antibiotic TC under the simulated solar-driven irradiation. In our work, s-p orbital hybridization by Sn-doping has been employed as an effective strategy to reconstruct a new valence band to further modify the sulfides for their long-term stabilities in strong oxidizing environment. We have not only calculated the rationality of doping model and heterostructure but also experimentally verified the photo-physical process of charge transfer. Furthermore, the modified photocatalyst is conducive to contribute to the rapid and sustainable Fenton-like reactions with the best RhB and TC degradation rates of 1.00 μmol·min −1 ·g −1 cat. and 11.26 μmol·min −1 ·g −1 cat. respectively, which synergistically interplays with the generation and transition of reactive oxygen free radicals. This work extends a new viewpoint for the transition metal doping territory of electronic structure optimization to achieve pollutant degradation with high activity and stability to favor water decontamination applications.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2014
·
IF 3.209
Jimin Du,Zhiyong Wang,Guoyan Zhao,Yongteng Qian,Huijuan Chen,Jie Yang,Xinghui Liu,Kaidi Li,Chenxi He,Weimin Du,Imran Shakir
Herein, we report a facile route of synthesis that includes sol–gel method followed by the high temperature calcination with the aim to synthesize porous Sn/Nd-codoped TiO 2 monoliths with crystallized anatase walls using polystyrene spheres as template. Our results showed that both Sn and Nd dopant were well dispersed in the host matrix of the final product. Moreover, this as-synthesized porous Sn/Nd-codoped TiO 2 composite showed relatively narrow band gap compared to the pure anatase phase of TiO 2 , which may have its origin from the contributions from the Sn 4+ and Nd 3+ impurities. Interestingly, beside the narrowing of band gap in the codoped TiO 2 , the doping also have a positive effect to help reduced the charge recombination rate, which can be seen from the enhanced lifetime of photogenerated electrons/hole pairs. Finally, the photocatalytic activity of this interesting porous Sn/Nd-codoped TiO 2 monolith was examined by carrying out the dye degradation experiments on methyl orange under UV–vis irradiation. The porous Sn/Nd-codoped TiO 2 monolith showed better catalytic activity than the pure TiO 2 and Degussa P25 due to its narrow band gap, reduced photoinduced h + /e − pair recombination rate, and relatively large surface area. The synergistic combination of doping and surface area enhancement (porous structure) can be adopted as a promising material design strategy to develop photocatalyst materials for degradation of organic pollutants.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaolong Liu,Jiaxing Zhang,Xue Liu,Kaixuan Yang,Ting Su,Hongying Lü,Peng Wu,Zhiguo Zhu
Catalytic conversions of cyclic ketones into lactones by the Baeyer–Villiger oxidation are particularly attractive for practical applications because catalytic transformations minimize reactant use as well as waste production while simplify processing conditions. Understanding the unique behaviors of highly mesoporous Sn-Beta zeolite catalyst during Baeyer–Villiger oxidation is a challenging research topic. Herein, highly mesopore single-crystalline Sn-Beta zeolite (Sn-Beta-2s) is hydrothermally synthesized via our developed two-step interzeolite transformation strategy. The synthesis mechanism obeys dissolution–recrystallization process, where the degradation step is essential to prepare Sn-Beta-2s zeolite with abundant mesoporous and relatively high hydrophobicity. This single-crystalline Sn-Beta zeolite is adopted to the Baeyer-Villiger oxidation of cyclic ketones as heterogeneous Lewis acid catalyst. Structure-performance relationship reveals that the diffusion performance dominates the product selectivity over three Sn-Beta zeolites. Through the investigation of catalytic mechanism by in-situ FT-IR spectra and DFT calculations, it is found that carbonyl group is activated by zeolitic framework Sn. As for the bulky tert -butyl hydroperoxide oxidant, the reaction can be only triggered on the zeolite surface due to the severe steric constraints within zeolite channels, accounting for the excellent catalytic activity of Sn-Beta-2s zeolite with nanocrystalline nature.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yunmeng Cao,Lin Yue,Zaixing Li,Yonghui Han,Jing Lian,Huiping Qin,Shuyan He
In this study, Sn–Bi–MOF/Ti 3 C 2 heterojunction catalysts were prepared using the solvothermal method, and their photocatalytic ability to degrade and mineralize tetracycline (TC) under illumination was investigated. After 90 min of photocatalysis, the pollutant had a degradation efficiency of 96.2% and a mineralization rate of 45.5%. The physicochemical properties of the catalysts were analyzed using various methods. The effects of the solution pH, coexisting anions, and water quality on the catalyst performance were investigated. ·O 2 − and h + are the main active substances in the photocatalytic mechanism, as demonstrated by free-radical quenching experiments and EPR tests. The degradation of TC and the intermediates produced were determined using 3D fluorescence and LC-MS. The photocatalytic mechanism of Sn–Bi–MOF/Ti 3 C 2 was proposed based on free radical determination and electrochemical tests. The formation of the Schottky junction accelerated the transfer of electrons to Ti 3 C 2 and improved the separation of charges, which led to the generation of free radicals. Sn–Bi–MOF/Ti 3 C 2 still exhibited good catalytic ability after four cycles of the experiments, and the XRD patterns before and after the reaction were consistent, which illustrates that the composite structure was stable. Overall, Sn–Bi–MOF/Ti 3 C 2 has promising applications in the photocatalytic removal of refractory pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ELECTROANALYSIS
·
2020
·Vol. 33
·期 4
·947-955
·
IF 2.544
Yanqiu Fu,Jinrui Li,Wei Jin,Zhonggang Liu
In this work, a dual-functional electrochemical sensor has been proposed based on Sn-doped defective Bi 2 S 3 (TDDB) microspheres, which exhibited the excellent electrochemical performance on Pb(II) and H 2 O 2 detection. The TDDB offered a satisfied detection limit of 8.0 nM towards Pb(II) with a sensitivity of 96.7 μA ⋅ μM −1 . As a H 2 O 2 sensor, a high sensitivity of 3540 μA mM −1 cm −2 was obtained in a linear range from 0.45 mM to 10 mM with a detection limit of 10 nM. Moreover, the electrochemical detection of Pb(II) in Taihu Lake and H 2 O 2 in human serum was achieved with high reliability and good recovery.
研究领域:
分析化学
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环境科学
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生物医学工程
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DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Kaixuan Cui,Wang Zhao,Dongmei Zhou,Shengwei Li,Chunrong Liu,Ping Li,Xuanhui Qu
The corrosion of a liquid Sb–Sn alloy on a positive current collector (PCC) can seriously affect the performance of Li||Sb–Sn liquid metal batteries (LMBs) and hinder their industrial applications. This work systematically investigated Ti, Mo, and W as the PCCs of Li||Sb–Sn LMBs corrosion behaviors and electrochemical properties. The corrosion mechanism and cell performance recession reason are illuminated based on compatibility analysis and electrochemical measurements. Ti and Mo are more easily dissolved in the liquid Sb–Sn alloy than W, forming Ti–Sb–Sn and Mo–Sb–Sn corrosion products. The average corrosion rates of Ti, Mo, and W in the liquid Sb-Sn alloy are 0.105, 0.068, and 0.014 mm/a, respectively. These corrosion behaviors not only affect the cell voltage and capacity to varying degrees but also may cause potential security liability. Hence, W is an admirably stable PCC of Li||Sb–Sn LMBs, which can also serve as an electroconductive and corrosion-resistant protective coating to reduce cost and solve the forming problem.
研究领域:
材料科学
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电化学
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DOI
高影响因子
CATALYSIS LETTERS
·
2024
·
IF 2.3
Dong Wenjie,Cai Ao,Wu Sui,Qi Beimeng,Dai Zhixi
A porous Sn–Er–Beta zeolite catalyst was rapidly prepared by introducing Sn source with water bath method and Er source with solid-state ion exchange method. When adding 180 mg catalyst, 225 mg glucose and 10 mL water into a reaction kettle at 200 °C for 2 h, the yield of lactic acid can reach 71.2%. After being recycled 5 times, the lactic acid yield of the catalyst can still reach 45.3%. The physical and chemical properties of Sn–Er–Beta zeolite were characterized, and it was confirmed that the catalyst had a multi-stage pore structure, with Sn and Er elements existing in the zeolite skeleton. Among them, the increase of Lewis acidity, Brønsted acidity and special strong alkaline sites of Sn–Er–Beta zeolite caused by the introduction of Sn, and the Lewis acidic sites are further increased after the introduction of Er. The combination of Sn and Er obviously improves the catalyst’s capability to catalyze glucose and fructose to produce lactic acid. This provides an important reference value for the directional catalytic process of sugars. Graphical abstract
研究领域:
化学工程
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催化科学
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DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2019
·Vol. 95
·期 3
·798-805
·
IF 2.659
Dan Luo,Shengnan Liu,Wang Yin,Shuqian Xia
BACKGROUND Fast pyrolysis of lignocellulosics has provided an abundant sugar source for production of value-added chemicals, and levoglucosan is the most representative sugar in pyrolysis liquid (bio oil). This paper explored the potential for producing methyl lactate from levoglucosan by employing the mixed catalysts of zeolite tin beta (Sn-Beta) and zeolite hydrogen beta (H-Beta). RESULTS Under the optimal conditions (at 200 °C and mixed catalysts with H-Beta:Sn-Beta ratio of 1:5), the yield of methyl lactate obtained from levoglucosan conversion was as high as 35%. And the yield was comparable to that of methyl lactate obtained from glucose conversion under the similar conditions (at 200 °C and pure Sn-Beta). In order to investigate the reason, a contrasting experiment with glucose as substrate also was carried out with the mixed catalysts. The results indicated that during the levoglucosan conversion process, ‘the methanolysis of levoglucosan’ was likely to compete with ‘the dehydration of glucose’ for the Brønsted acid sites of H-Beta. In addition, the catalytic functions of H-Beta and Sn-Beta, and the reaction pathway were deeply investigated through tracking and comparing the conversion of levoglucosan over mixed H-Beta/Sn-Beta and over pure Sn-Beta catalysts, respectively. CONCLUSION The appropriately lower ratio of H-Beta:Sn-Beta and relatively higher temperature were favorable for the reaction. H-Beta containing Brønsted acid could remarkably accelerate the conversion of levoglucosan and methyl-glucosides to glucose. Sn-Beta containing Lewis acid mainly promoted the retro-aldol condensation of glucose and formation of methyl lactate. © 2019 Society of Chemical Industry
研究领域:
化学工程
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生物质能
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催化化学
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DOI
高影响因子
ACS Omega
·
2020
·
IF 2.87
Zheng Shen,Yishan Gao,Ling Kong,Minyan Gu,Meng Xia,Wenjie Dong,Wei Zhang,Xuefei Zhou,Yalei Zhang
Amine-modified Sn-β was synthesized to improve the yield of lactic acid produced from Scenedesmus. After studying the growth of Scenedesmus, we selected Scenedesmus with the highest sugar content of 46.7% after 8 days of culture as the reaction substrate. The results showed that the yield of lactic acid from Scenedesmus was greatly increased after being catalyzed by 3-aminopropyltrimethoxysilane (APTMS)-modified Sn-β. After the pretreatment of Scenedesmus in an ice bath ultrasound, under the optimal reaction conditions (190 °C and 5 h), the yield of lactic acid reached the highest (37%). The acid–base characterization results of the catalyst confirmed that there are both Lewis acidic sites and medium-strength basic sites in the catalyst. Both of these sites can promote the hydrolysis of Scenedesmus, while the Lewis acidic sites can promote the production of lactic acid and the basic sites can effectively inhibit the production of the byproduct 5-hydroxymethylfurfural (HMF). This study proved that this amination catalyst is a useful strategy to increase the yield of lactic acid.
研究领域:
生物化学
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催化化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF POROUS MATERIALS
·
2021
·Vol. 28
·期 5
·1315-1324
·
IF 2.496
Cai Qiang,Yue Xiaoyang,Dong Wen-Sheng
Bimetallic modified Fe–Sn/Beta was synthesized and examined as a solid acid catalyst for the transformation of glucose into methyl lactate in methanol. The catalysts were characterized by a combined characterization techniques i.e. X-ray fluorescence spectroscopy, N 2 physisorption, powder X-ray diffraction, X-ray photoelectron spectroscopy, NH 3 temperature-programmed desorption, and pyridine adsorption Fourier transform infrared spectroscopy. A high yield of methyl lactate of 67% was achieved upon conversion of 0.3 g glucose in 24 g methanol over 0.15 g catalyst at 220 ℃ under 2 MPa N 2 for 6 h. The recyclability of the catalyst was also investigated, and the conversion of glucose remained constant; conversely, the yield of methyl lactate decreased slightly in five catalytic runs. The excellent catalytic performance of Fe–Sn/Beta was attributed to the presence of large amounts of Lewis acid sites. Besides, the rich mesoporosity in Fe–Sn/Beta improved mass transfer rates in the conversion of glucose to alkyl lactates.
研究领域:
催化化学
·
能源化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）