Nano Energy
·
2020
·
IF 16.602
Shuwei Han,Duo Chen,Jian Wang,Zhen Liu,Fan Liu,Yuke Chen,Yanchen Ji,Jinbo Pang,Hong Liu,Jingang Wang
Piezotronic effect has been thought as a general approach for building high performance hybrid photocatalysts by integrating semiconductor nanostructures on piezoelectric materials . Although polyvinylidene fluoride (PVDF) has been widely applied as a flexible piezoelectric material, it is thought that assembling inorganic semiconductor nanostructures on PVDF surface is promising owing to the high hydrophobic property of PVDF. In this study, we proposed that the coordination effect between a metal ion and an exposed fluorine atom on the surface of PVDF can be used to assemble a layer of photocatalytic metal oxide nanostructures on the PVDF film surface. Using Sn 3 O 4 as a model oxide, a Sn 3 O 4 /PVDF hybrid nanostructured photocatalyst was successfully synthesized. The X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy results confirmed the existence of coordinated bonds between F ions and metal ions, which could explain the stable growth of inorganic nanostructures on the hydrophobic surface of PVDF. At the interface between Sn 3 O 4 and PVDF in the hybrid nanostructured photocatalyst, a built-in electric field was constructed on the basis of the ferroelectric field of the PVDF film, which induced an enhanced photocatalytic property. Most importantly, the swing driven by flowing water can considerably enhance photocatalytic properties owing to the piezotronic effect-driven alternating reconstruction of built-in electric field induced by the deformation of PVDF film. This study provides an approach for the synthesis of metal oxide semiconductor nanostructures on hydrophobic PVDF polymer surface . The developed material will have many applications in the photodegradation of organic pollutants in waste water.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 29
·14043-14051
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IF 3.925
Hele Liu,Pengfei Tan,Huanhuan Zhai,Mingyuan Zhang,Jiaoyang Chen,Ruifeng Ren,Ziyu Wang,Jun Pan
Developing economic and high-performance noble metal-free photocatalysts is the key to realize efficient photocatalysis. In this work, NiS nanoparticles and hierarchical Sn3O4 nanostructures are tightly bonded by a two-step method combining hydrothermal and ion precipitation to construct a 0D/3D nanocomposite structure, which accelerates the interface electron transfer rate and photogenerated electron–hole separation efficiency. Compared with the pure Sn3O4, the loaded samples obviously have stronger light absorption capacity and effectively improve the utilization of visible light, thus showing enhanced photocatalytic hydrogen generation performance. NiS provides more active sites on the surface and facilitates electron transit as an electron acceptor, resulting in increased photocatalytic activity. As a result, when the loading of NiS reaches 1.0%, the photocatalyst shows an excellent hydrogen production performance, with an average hydrogen generation rate of 17.43 μmol g−1 h−1, which is 2.4 times than that of the pristine Sn3O4. This research offers a new idea to develop noble metal-free photocatalysts with high activity.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2019
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IF 6.393
Wenwen Zeng,Yingzhi Liu,Jun Mei,Changyu Tang,Kun Luo,Shaomin Li,Haoran Zhan,Zhoukun He
Considering the high harmfulness of NO 2 to the environment and human healthy, it is pressing to develop NO 2 sensors with high sensitivity and selectivity. In this work, we successfully fabricated a novel hierarchical SnO 2 –Sn 3 O 4 n–n heterostructure through the solvothermal method and subsequent annealing. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FESEM), and high-resolution transmission electron microscopy (HRTEM) characterization of the material confirmed the hierarchical microsphere structure and the formation of SnO 2 –Sn 3 O 4 n–n heterojunction. The gas sensing experiment demonstrated that the sample annealed at 600 °C exhibited excellent NO 2 sensing performances at 150 °C. Its sensitivities to 5 and 10 ppm NO 2 were as high as 48 and 43.6 ppm −1 respectively, and its limit of detection was lower than 20 ppb. Additionally, it possessed excellent selectivity to NO 2 as well as good repeatability and stability. With further exploration of the sensing mechanism of hierarchical SnO 2 –Sn 3 O 4 n–n heterostructure, we proposed that the unique microstructure with a large specific surface area and the formation of n–n-type heterojunctions contribute to the excellent NO 2 sensing performance.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Surfaces and Interfaces
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2025
·
IF 6.3
Jing Fan,Liang Guo,Fenhong Song
This study employed the hydrothermal method to dope Mn into Sn 3 O 4 , which was then combined with g-C 3 N 4 through calcination to prepare an II-type Mn-Sn 3 O 4 -x/CN composite photocatalyst. The impact of Mn-Sn 3 O 4 loading on the photocatalytic performance was discussed. The synthesized composite catalysts exhibited remarkable hydrogen production performance under visible light, with Mn-Sn 3 O 4 -10/CN demonstrating the highest performance. Characterization techniques confirmed the successful preparation of the catalysts, and the light absorption capacity, charge separation and transport efficiency of Mn-Sn 3 O 4 -10/CN are significantly improved compared to catalysts with other ratios. This study developed a Mn-Sn 3 O 4 -x/CN composite catalyst with high stability and good hydrogen production rate. It provides further directions for the research of g-C 3 N 4 -based composite catalysts.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
·
IF 4.7
Cunxin Wei,Dongyuan Miao,Zhihe Xie,Bin Zhang,Huiping Qi,Yan Liu
A uniformly distributed photocatalytic composite material CdS-Sn 3 O 4 heterojunction was constructed. Mixed valence tin oxide Sn 3 O 4 was selected as a co-catalyst to improve the stability and photocatalytic activity of the composite because Sn 3 O 4 possesses adjustable band gap and matches well with the CdS band position. The characterizations of EDS and XPS proved that Sn 3 O 4 was successfully loaded on CdS. The composite material exhibits an excellent band gap of 2.25 eV, a high photo-generated current intensity and good photoluminescence properties. Due to the timely transfer of photo-generated electrons from CdS material to Sn 3 O 4 , the recombination of electron and hole is reduced, resulting in significant increase of photocurrent density and photocatalytic efficiency. The photocatalytic degradation experiments show that CdS-Sn 3 O 4 possesses a significant degradation effect on antibiotics norfloxacin and tetracycline. Simultaneously, it also exhibits certain degradation effects on organic dye pollutants methylene blue and Rhodamine B. The active substances analysis shows that H 2 O 2 and hole (h + ) are the main active substances. Composite CdS-Sn 3 O 4 still maintains a stable structure and good photocatalytic activity after several photocatalysis cycles. In brief, this heterojunction material is promising in water treatment and environmental protection.
研究领域:
材料科学
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环境化学
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光催化
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纳米复合材料
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水处理技术
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Xiaoke Luo,Di Wang,Shiyi Liu,Hailong Yan,Jinbing Cheng,Yang Lu,Deyang Zhang,Huan Pang
The redox reactions occurring at positive electrode of the lithium-sulfur (Li-S) batteries involve several key electrocatalytic processes that significantly impact the overall performance of the electrochemical energy storage system. This study presents a heterogeneous catalytic composite material composed of CoSe quantum dots (QDs) integrated with Sn 3 O 4 nanosheets, which enhances the overall ionic conductivity and accessibility of active sites within the cathode. This controlled migration effectively traps polysulfides within the cathode, reducing their dissolution into the electrolyte and mitigating the shuttle effect. Li-S batteries incorporating CoSe QDs/Sn 3 O 4 porous carbon nanofibers (PCNFs) demonstrate a high discharge capacity of 1596.9 mAh g −1 at 0.1 C, along with remarkable cycling stability, achieving 1500 cycles at 2 C with a minimal capacity decay of 0.024 % per cycle. Even under a high sulfur loading conditions of 8.61 mg cm −2 and a low electrolyte to sulfur ratio of approximately 4.6 μL mg −1 , the CoSe QDs/Sn 3 O 4 PCNFs cathode delivers an initial discharge-specific capacity of 732.0 mAh g −1 at 0.2 C. Through this method, we accomplished the size control and uniform distribution of CoSe QDs, and this method can be extended to the synthesis of other metal oxide and metal sulfide QDs, offering a novel idea for the application of QDs in polysulfide catalysis.
研究领域:
材料科学
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电化学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
Nano Express
·
2021
·Vol. 2
·期 2
·020021
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IF 0
Guoliang Chen,Suyang Lu,Yunfan Shang,Wenwen Zeng,Haoran Zhan,Jun Mei,Zhoukun He
In this work, monophasic Sn3O4 and biphasic Sn3O4-SnO2 heterostructure composed of plentiful nanosheets were synthesized by using a simple one-step solvothermal method. Their morphology, structure, and composition were characterized by XRD, XPS, SEM and TEM. Also their NO2 sensing performance were tested systematacially. The results demonstrated that the gas sensor based on the Sn3O4-SnO2 composites exhibits excellent NO2 sensing performance including low operating temperature, high sensitivity and outstanding selectivity. Its sensitivity to 1 ppm NO2 is as high as 1395.0 ppm−1 while the operating temperature is as low as 50 °C. Its excellent NO2 sensing performance could be attributed to the formation of Sn3O4-SnO2 heterojunction which modulated the electrons effectively, abundant oxygen vacancies and high specific surface area which enhanced the adsorption of NO2.
研究领域:
材料科学
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环境监测
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传感器技术
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产品关联
DOI
Environmental Science-Nano
·
2019
·Vol. 7
·期 1
·286-303
·
IF 7.704
Changlin Yu,Debin Zeng,Qizhe Fan,Kai Yang,Julan Zeng,Longfong Wei,Junhui Yi,Hongbing Ji
A powerful photocatalyst is the key for photocatalytic environmental purification via sunlight harvesting and utilization. In this work, novel boron doped Sn3O4 microspheres constructed from nanoplates were designed and fabricated. Density functional theory (DFT) studies were carried out to investigate the boron doping mechanism, in which DFT predicted that boron doping would enhance the light harvesting capability and the photo-response of Sn3O4, which was proved by diffuse reflectance spectra (DRS) and transient photocurrent responses. Attributed to its unique porous structure, and enhanced light harvesting and high carrier utilization capabilities, the boron doped Sn3O4 microsphere exhibited high efficiency for Cr(IV) removal and azo dyestuff degradation. Moreover, an unexpected synergistic effect upon simultaneous removal of phenols (phenol, bisphenol A and p-chlorophenol) and Cr(VI) was observed.
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
Analytical Methods
·
2018
·Vol. 10
·期 41
·4985-4994
·
IF 2.073
Juan Wang,Wei Du,Xingqi Huang,Junling Hu,WeiWei Xia,Dangqin Jin,Yun Shu,Qin Xu,Xiaoya Hu
In this work, a kind of molecularly imprinted polymer (MIP) was prepared by using metronidazole (MNZ) as the template, pyrrole as the functional monomer and vertically cross-linked two-dimensional Sn3O4 (2D Sn3O4) nanoplates as the support. The developed MIP/2D Sn3O4 was characterized by SEM, XRD, XPS and FT-IR. It was used to modify a glassy carbon electrode (GCE) to construct a novel MNZ electrochemical sensor. Parameters affecting the performance of the sensor were thoroughly investigated and optimized. The results revealed that 2D Sn3O4 is promising as a support for MNZ imprinting. Owing to the 2D structure, large active surface, functionalization and high electrical conductivity, the MIP/2D Sn3O4 modified electrode showed a wide linear range and low detection limit. The differential pulse voltammetric peak currents produced on the MIP/2D Sn3O4 electrochemical sensor showed a linear relationship for concentrations of MNZ in the range of 0.025–2.5 μM. The detection limit of this sensor was down to 0.0032 μM (S/N = 3). This MIP/2D Sn3O4 sensor was successfully used to detect MNZ in honeybee samples without any separation or accumulation processes, demonstrating that MIP/2D Sn3O4 is a promising biomimetic material for use in electroanalysis and other relevant fields.
研究领域:
分析化学
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材料科学
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生物医学
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产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2019
·
IF 3.261
Shuguang Li,Zhiyu Liu,Zhihui Qu,Congcong Piao,Jize Liu,Duo Xu,Xiaojing Li,Jun Wang,Youtao Song
It is first reported that an all-solid-state Z-scheme NaNbO 3 -Au-Sn 3 O 4 nanocomposite photocatalyst can be prepared by ultrasonic dispersion and calcination methods. In NaNbO 3 -Au-Sn 3 O 4 , NaNbO 3 and Sn 3 O 4 form a Z-scheme photocatalytic system, Au as an electron transfer channel accelerates the flow rate of the photo-induced electrons. Their effective combination can not only improve the utilization ratio of sunlight but also achieve the effective segregation of photo-induced electron-hole pairs. The fabricated samples were characterized by XRD, Raman spectra, SEM, TEM, UV–vis DRS, XPS and PL. In addition, the activity of the NaNbO 3 -Au-Sn 3 O 4 photocatalyst was researched via the photocatalytic degradation of carbofuran in wastewater under sunlight irradiation. The sunlight illumination time, NaNbO 3 and Sn 3 O 4 mole ratio, cycle number and pesticides types as influence factors on the photocatalytic degradation efficiency of Z-scheme NaNbO 3 -Au-Sn 3 O 4 photocatalyst are investigated in detail. The possible mechanism and degradation pathways for the photocatalytic degradation of carbofuran caused by Z-scheme NaNbO 3 -Au-Sn 3 O 4 photocatalyst under sunlight irradiation are put forward. The research results show that the all-solid-state Z-scheme NaNbO 3 -Au-Sn 3 O 4 photocatalyst displays a wonderful activity for degradation of carbofuran in wastewater.
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
RSC Advances
·
2020
·Vol. 10
·期 50
·29843-29854
·
IF 3.119
Wenwen Zeng,Yingzhi Liu,Guoliang Chen,Haoran Zhan,Jun Mei,Nan Luo,Zhoukun He,Changyu Tang
Considering the harmfulness of nitrogen dioxide (NO2), it is important to develop NO2 sensors with high responses and low limits of detection. In this study, we synthesize a novel SnO–Sn3O4 heterostructure through a one-step solvothermal method, which is used for the first time as an NO2 sensor. The material exhibits three-dimensional flower-like microparticles assembled by two-dimensional nanosheets, in situ-formed SnO–Sn3O4 heterostructures, and large specific surface area. Gas sensing measurements show that the responses of the SnO–Sn3O4 heterostructure to 500 ppb NO2 are as high as 657.4 and 63.4 while its limits of detection are as low as 2.5 and 10 parts per billion at 75 °C and ambient temperature, respectively. In addition, the SnO–Sn3O4 heterostructure has an excellent selectivity to NO2, even if exposed to mixture gases containing interferential part with high concentration. The superior sensing properties can be attributed to the in situ formation of SnO–Sn3O4 p–n heterojunctions and large specific surface area. Therefore, the SnO–Sn3O4 heterostructure having excellent NO2 sensing performances is very promising for applications as an NO2 sensor or alarm operated at a low operating temperature.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Debin Zeng,Changlin Yu,Qizhe Fan,Julan Zeng,Longfu Wei,Zesheng Li,Kai Yang,Hongbing Ji
Here, novel fluorine doped Sn 3 O 4 microspheres with highly photocatalytic performance were reported. UV–vis diffuse reflectance spectrum (DRS) and transient photocurrent response test showed the enhanced light harvesting and photo-response. DRS and electron spin resonance (ESR) spectrum confirmed that the enhanced light harvesting could remarkably boost active radical generation. The low recombination rate of free charge carrier and the long lifetime of photon-generated carrier also made great contribution. The lifetime of photon-generated carrier of F 0.2 -Sn 3 O 4 was 1.38 μs, which was 2.76 times of Sn 3 O 4 (0.50 μs). F 0.2 -Sn 3 O 4 reduced 95% of 10 ppm Cr(VI) (pH = 7) under light irradiation (400 W metal halogen lamp, light intensity: 148.36 mW/cm 2 ) for 12 min, which was 3.6, 10.2 and 64.5 times higher than that of Sn 3 O 4 (25.83%), C 3 N 4 (9.25%) and commercial TiO 2 (1.47%), respectively. F 0.2 -Sn 3 O 4 could remove 98% of methyl orange within 4 min comparing with commercial TiO 2 (30%). The highly removing efficiency of phenols (phenol, bisphenol A and p-chlorophenol) was also obtained. Density functional theory (DFT) calculation, Powder X-ray diffraction (XRD) patterns and DRS revealed that the replacement of F − by O 2− enhanced the light harvesting. The work is promising for the synergistic treatment of industrial waste water with organic pollutants (phenols) and Cr(VI).
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）