Nanomaterials
·
2022
·Vol. 12
·期 12
·2124
·
IF 5.719
Zhengdao Li,Kecheng Liu,Ruixue Sun,Chuanyun Yang,Xiaodi Liu
Hierarchical ZnSnO3/Zn2SnO4porous hollow octahedrons were constructed using the method of combining the acid etching process with the in situ decoration technique for photovoltaic and photocatalytic applications. The composite was used as photoanode of the dye-sensitized solar cells (DSSCs), an overall 4.31% photovoltaic conversion efficiency was obtained, nearly a 73.1% improvement over the DSSCs that used Zn2SnO4solid octahedrons. The composite was also determined to be a high-performance photocatalyst for the removal of heavy metal ion Cr (VI) and antibiotic ciprofloxacin (CIP) in single and co-existing systems under simulated sunlight irradiation. It was remarkable that the composite displayed good reusability and stability in a co-existing system, and the simultaneous removal performance could be restored by a simple acid treatment. These improvements of solar energy utilization were ascribed to the synergetic effect of the hierarchical porous hollow morphology, the introduction of ZnSnO3nanosheets, and the heterojunction formed between ZnSnO3and Zn2SnO4, which could improve light harvesting capacity, expedite electron transport and charge-separation efficiencies.Keywords:ZnSnO3/Zn2SnO4;hierarchical hollow octahedron;dye-sensitized solar cells;simultaneous removal;photocatalytic activity
研究领域:
材料科学
·
能源科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Chen Wang,Haobo Yan,Songlin Li,Yuesen Shi,Mingluo Du,Pengfei Cheng
Morphology-engineered ternary metal oxides have gained increasing attention for their potential in precise and sensitive gas detection. In this work, different Zn₂SnO₄ (ZTO) nanostructures were synthesized via a simple alkali-assisted hydrothermal route. The ZTO microcrystals with a polyhedral shape exhibited the largest specific surface area and content of surface-active oxygen species than cubic and plate-like counterparts. Additionally, the gas sensor based on the ZTO-polyhedron demonstrated outstanding n-butanol sensitivity, along with rapid response and recovery times, good repeatability and long-term stability. Furthermore, density functional theory (DFT) simulations were conducted to investigate the adsorption behavior of n-butanol on different crystallographic facets of ZTO to further elucidate the mechanism of ZTO-Polyhedron for the enhanced performance toward n-butanol. The results highlight the significant potential of this type of sensor for industrial and environmental detection applications and emphasize the critical role of nanostructural design in optimizing sensor performance.
研究领域:
材料科学
·
纳米技术
·
传感器
·
气体检测
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2019
·Vol. 21
·期 12
·1895-1902
·
IF 3.382
Bojia Xu,Baobao Cao
Wrapping SnO2 nanowires with appropriate oxide shell materials could produce a significant impact on their photoelectrical and gas sensing performance. In this work, a novel highly crystalline SnO2/Zn2SnO4 core–shell nanowire has been fabricated using a sequential chemical vapor deposition (CVD) method. Cross-sectional transmission electron microscopy (TEM) reveals that the SnO2 core is surrounded by five or six Zn2SnO4 domains, displaying a characteristic quasi-hexagonal cross section. Extensive crystallographic orientation study shows that the growth direction of the core is along the SnO2 [101] direction, parallel to that of the shell Zn2SnO4 [101], i.e. SnO2 [101]∥Zn2SnO4 [101]. While the Zn2SnO4 outer shells have two crystallographic relationships between the SnO2 core, SnO2 (10)∥Zn2SnO4 (13) and SnO2 (020)∥Zn2SnO4 (1), one group of the domains sticks to the SnO2 {111} plane and the other group grows on the SnO2 {020} plane. All the Zn2SnO4 shell domains expose their {111} plane as the ending surface. The tetragonal SnO2 core growing along the [101] direction makes it nearly invisible when collecting electron diffraction from the side view of the core–shell nanowire. The geometrical model deduced from cross-sectional TEM results suggests that there is only one low index zone axis for the core nanowire, i.e. SnO2 [010], along which Moiré fringes and the very rarely seen multiple double-diffraction effect were observed and discussed in detail. We would like to call the attention of researchers to be careful in correlating the microstructure of core–shell nanowires with their physical properties, because merely observing from the radial direction might not be able to reveal the true interface structure.
研究领域:
材料科学
·
纳米技术
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2016
·
IF 4.732
Weixin Li,Qinghui Jiang,Junyou Yang,Yubo Luo,Xin Li,Yaru Hou,Shuqin Zhou
In this study, ZnO/Zn 2 SnO 4 (ZSO) composite is synthesized as a promising alternative compact layer to TiO 2 by spray pyrolysis method. Owing to the ZnO/ZSO composite possesses higher carrier mobility and suitable band gap structure, it will behave well in the application of solar cells. The characterization results show that the ZnO/ZSO composite compact layer manifests better optical transmittance , enhanced electrons collective efficiency and superior electrical conductivity . Consequently, the corresponding photo-current is improved effectively when compared with that of TiO 2 compact layer. The optimum efficiency of perovskite solar cell based on the ZnO/ZSO composite compact layer reaches 12.03% at AM 1.5 solar light of 100 mW cm −2 , which is 18% higher than that of perovskite solar cell based on the TiO 2 compact layer.
研究领域:
材料科学
·
太阳能
·
光伏技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Ziying Wang,Andre Sackmann,Shang Gao,Udo Weimar,Geyu Lu,Sen Liu,Tong Zhang,Nicolae Barsan
Highly selective oxidizing gas sensors are of great importance for environmental pollution monitoring. In this work, a hybrid material containing Zn 2 SnO 4 nanoparticles (NPs) and immobilized reduced graphene oxide (Zn 2 SnO 4 -RGO) was developed as a high performance gas sensing material for the detection of ppb-levels of oxidizing gases (NO 2 and O 3 ). The structural, morphological and compositional properties of the Zn 2 SnO 4 -RGO hybrids were systematically characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS), which demonstrated the successful anchoring of Zn 2 SnO 4 NPs on RGO nanosheets. The obtained Zn 2 SnO 4 -RGO hybrids exhibited outstanding sensing performance for detecting oxidizing gases (NO 2 and O 3 ) with very low cross sensitivities to reducing gases, such as C 2 H 5 OH, CH 3 COCH 3 and CO. The Zn 2 SnO 4 -RGO based sensors exhibited high response values of up to 3.50 for 500 ppb NO 2 , which is higher than that for detection of 500 ppb O 3 (1.78) at 30 °C under 50% relative humidity (RH). Moreover, the NO 2 sensing performances of Zn 2 SnO 4 -RGO-based sensors were investigated under various RH. In all cases, the sensors based on RGO and Zn 2 SnO 4 -RGO hybrids presented p-type behavior. The sensors based on Zn 2 SnO 4 -RGO hybrids also exhibited high response values of up to 3.62 for 1 ppm NO 2 at 50 °C in 80% RH, which is much higher than that of pure RGO (1.31). The excellent sensing performances are mainly ascribed to the synergetic effect of Zn 2 SnO 4 NPs and RGO. Furthermore, the surface reaction between Zn 2 SnO 4 -RGO hybrids and NO 2 can be concluded from Operando diffuse reflectance infrared Fourier transformed spectroscopy (Operando DRIFT).
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2024
·Vol. 30
·期 7
·4091-4098
·
IF 2.4
Hu Wenquan,Wang Wenlei,Chen Zhikang,Chen Qi,Wang Ming
In this work, the Zn 2 SnO 4 /ZnO nanocomposites synthesized by one-step hydrothermal method had been characterized by X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and surface area analysis (BET) techniques, while the photocatalytic activity of the Zn 2 SnO 4 /ZnO had been investigated during the degradation process of organic pollutants under UV irradiation. The results indicate that the Zn 2 SnO 4 /ZnO displays a cube and rod-shape intertwined structure, which allows the material to maintain a large specific surface area while preserving its structural stability. The nanocomposite demonstrates a high photocatalytic activity in the degradation of methylene blue (MB), ofloxacin antibiotics (OFL), and 5% cis–trans cypermethrin emulsion (5% CTC). The heterostructure of the Zn 2 SnO 4 /ZnO effectively inhibited the electron–hole recombination, greatly improved the activity and stability of the catalyst, and effectively promoted the catalytic reaction.
研究领域:
材料科学
·
纳米技术
·
光催化
·
环境化学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Shasha Li,Jiahui Xu,Shuheng Ding,Haoyun Zhao,Wei Wang,Xi-Tao Yin
In this study, CeO 2 /Zn 2 SnO 4 composites were synthesized via a facile and efficient two-step hydrothermal method. The crystal structure, surface chemical composition, and morphology of the prepared materials were systematically characterized using XRD, XPS, SEM, and TEM. Gas sensors were fabricated using these materials and evaluated for their potential application in ethanol detection. The gas sensing properties of the CeO 2 /Zn 2 SnO 4 composites toward various volatile organic compounds (VOCs) were investigated in the temperature range from 100 to 380 °C. The experimental results demonstrate that the Zn 2 SnO 4 -based sensor modified with 15 mol% CeO 2 exhibits outstanding sensing performance toward 100 ppm ethanol. In particular, the sensor shows excellent selectivity compared with other interfering VOCs and achieves optimal sensing performance at 180 ℃. Under this condition, the response value reaches 308.5, and the response time is approximately 17 s, indicating a fast and highly sensitive detection capability. The improved performance of this ethanol sensor is primarily attributed to the formation of the CeO 2 –Zn 2 SnO 4 heterojunction and the increase in oxygen vacancies.
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY
·
2017
·
IF 4.018
Jie Dou,Yafeng Li,Fengyan Xie,Tahsin J. Chow,Mingdeng Wei
Zinc stannate (ZTO) is a class of ternary oxides that are known for their stable properties and high electron mobility. Also, its chemical compositions and band structures are easy to be controlled, and which is thus ideal for applications in dye-sensitized solar cells (DSCs). However, the structures of most dyes are optimized for the widely used TiO 2 . Therefore, the efficient dyes that are especially suitable for ZTO are highly desired. In this study, the dyes containing phenylene-thiophenylene-phenylene bridge (PSP) were found to match well with the band structures of ZTO and could be used as efficient sensitizers for ZTO-based solar cells. Moreover, the pre-calcination temperatures have great influence on the band structures of ZTO. When ZTO nanoparticles were pre-sintered, although the adsorption amount of dyes was decreased, the charge collection efficiency was confirmed to be enhanced greatly. A cell sensitized by optimized PSP dyes exhibited a power conversion efficiency of 4.68%, which was much higher than that of widely used N719 and D131.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Yawen Cai,Yifeng Zhang,Zhimin Lv,Shuo Zhang,Feixue Gao,Ming Fang,Mingguang Kong,Peisheng Liu,Xiaoli Tan,Baowei Hu,Xiangke Wang
In this work, a highly efficient uranium extraction method from water by the piezo catalytic reduction-oxidation process is reported by utilizing a hollow cubic shaped Zn 2 SnO 4 /SnO 2 as piezo catalyst. The electrons and holes in Zn 2 SnO 4 /SnO 2 are separated efficiently under the irradiation of ultrasound. After that, some of the piezo electrons reduce the adsorbed U(VI) to UO 2 , the others react with soluble oxygen to form H 2 O 2 , and oxidize UO 2 to generate (UO 2 )O 2 ∙2H 2 O, which could be efficiently separated from the solution. U(VI) piezo catalytic extraction rate could reach ~ 90% under the irradiation of ultrasonic waves (40 kHz, 120 W) within 5 h and only decreased by ~ 3% after four cycles. The present work advances piezo catalysis as a new route for uranium extraction from water, which may be applied in the extraction or removal of U(VI) in the U-containing wastewaters, providing new opportunities for resource-saving and environmental enhancement.
研究领域:
环境科学
·
材料科学
·
核工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Fangling Zhou,Zhuangzhuang Mu,Gaoliang Chen,Zhenyu Yuan,Renze Zhang,Xin Yan,Fanli Meng
In this study, we successfully constructed a CoSnO₃/SnO₂/Zn₂SnO₄ ternary heterojunction composite, and developed a high-performance isopropanol gas sensor. Experimental results show that the introduction of p-type amorphous CoSnO₃ forms a multi-interface synergistic effect with the SnO₂/Zn₂SnO₄ (n-n heterojunction) substrate, significantly enhancing the gas-sensing performance of the sensor. Specifically, compared with the unmodified SnO₂/Zn₂SnO₄ sensor, the optimal operating temperature of the 0.5 % CoSnO₃/SnO₂/Zn₂SnO₄ sensor was reduced from 380 °C to 320 °C, the lower detection limit was reduced from 1 ppm to 0.5 ppm, and the response value to 100 ppm isopropanol was significantly increased from 40.7 to 490.5, an increase of 12 times. In addition, the sensor exhibits excellent repeatability and long-term stability. The excellent gas-sensing performance of the CoSnO₃/SnO₂/Zn₂SnO₄ sensor prepared in this study mainly stems from its three structural advantages: the effective construction of p–n heterojunctions, abundant surface oxygen vacancies, and the specific adsorption of isopropanol by CoSnO₃. The research team conducted an in-depth and systematic investigation into the gas-sensing mechanism of this composite sensing material.
研究领域:
材料科学
·
传感器技术
·
纳米材料
·
表面化学
·
功能材料
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Xiangyu Peng,Jiayi Tian,Shuai Zhang,Wei Xiao,Xiaozhen Tian,Yubin Wang,Juanqin Xue,Dashi Lei
Rational design of photoelectrode with high visible light utilization rate and separation efficiency of electron-hole pairs is the key step in photoelectrocatalytic technology. In this work, Z-Scheme photoelectrocatalyst (ZTO/rGO/Ag/AgBr) was synthesized by hydrothermal and photo-reduction process. Comparing with pure Zn 2 SnO 4 (ZTO), adding reduced graphene oxide (rGO) effectively improved electrons transfer efficiency. Notably, the addition of Ag/AgBr not only broaden the visible light response range of ZTO, but also accelerated the separation of photo-generated electron-hole pairs, and constructed all-solid-state Z-Scheme heterojunction . Meanwhile, DFT calculation showed that Ag metal on rGO surface could act as active site for organic dyes degradation . Moreover, the addition of extra bias potential during photoelectrochemical process not only accelerate the migration of carriers, but also inhibit the recombination of photo-generated electron-hole pairs. Methylene blue (MB) could be effectively removed during photoelectrochemical reaction process, which was attributed to hydroxyl radical (•OH) and superoxide radical (•O 2 - ). In this work, Z-Scheme transfer pathway, assisted photoelectrocatalytic technology, is a feasible strategy for improving catalytic performance.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2021
·Vol. 23
·期 13
·2590-2598
·
IF 3.545
Hongyan Chen,Jiajing Zhou,Fuyuan Guo,Yaqian Wang,Yue Chen,Yan Liang,Yunlong Xu,Huang Zhang
Fabrication of porous micro/nanostructures with high electronic conductivity is very efficient for enhancing the electrochemical performance of transition metal oxide-based anode materials for lithium-ion batteries. Here, we successfully propose Zn2SnO4 composites functionalized using biomass-derived carbon and metal–organic framework derived MnO/C. The fabricated LC@Zn2SnO4@MnO/C composite exhibits superior electrochemical performance with a reversible capacity of 1185.6 mA h g−1 at 200 mA g−1 and maintains 552 mA h g−1 even at 2 A g−1 for 150 cycles. The significantly improved performance suggests that the unique structure constructed by MOF-derived oxide decoration and dual-carbon coating can efficiently enhance the material integrity and facilitate charge transfer upon repeated (de)lithiation processes, demonstrating a general strategy for the preparation of mixed-metal-oxide nanostructures for batteries with improved electrochemical performance.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）