CRYSTENGCOMM
·
2020
·Vol. 22
·期 12
·2219-2226
·
IF 3.117
Rui Zhang,Jianlei Kuang,Qipeng Lu,Qi Wang,Peng Sun,Wenxiu Liu,Shu Yin,Wenbin Cao
SnO sheets with tunable thickness were synthesized by a hydrothermal method. The thickness of the SnO sheets could be delicately controlled by adjusting the amount of PEG added. It was found that the thickness of the SnO sheets reduced from 1 μm to 150 nm with the increase in PEG. PEG was preferentially adsorbed on the (001) facets of SnO and thus inhibited the crystal growth in the <001> direction, which determined the final shape to be sheets with reduced thickness. The reduced thickness of SnO offered a shorter pathway along the two-dimensional conducting path and thus induced rapid charge transfer and high separation efficiency. Meanwhile, the reduced thickness of the SnO sheets induced an enlarged band gap and correspondingly increased the redox ability of SnO, which was confirmed by UV-vis absorbance spectroscopy and Mott–Schottky plots. Benefiting from the improved charge separation efficiency and the stronger redox ability, enhanced photocatalytic degradation efficiency was demonstrated by the SnO sheets with reduced thickness. The SnO sheets with the thinnest thickness (150 nm) exhibited optimal photocatalytic activity in the degradation of methylene blue (MB) under fluorescent light irradiation (350–800 nm); the activity was about 3.5 times higher than that of the SnO sheets with 1 μm thickness.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
·
2022
·
IF 0.672
Peimiao Deng,Weiguang Xie,Junlong Chen,Honglong Ning,Xiao Fu,Xu Zhang,Weijian Yuan,Yiping Wang,Rihui Yao,Junbiao Peng
Stannous oxide (SnO) is prepared by a sol–gel reaction, and the intermediate product is a white gel material, Sn6O4(OH)4, which is decomposed by a constant temperature heat treatment to form a regular black crystal, and the size reach 300 μm approximately. TG-DSC analysis shows that under air atmospheric conditions, SnO undergoes an oxidation and thermal decomposition reactions at 350 °C, which to form SnO2, Sn, and Sn3O4. With the temperature increasing, the reaction will continue and the final product will be SnO2. X-ray photoelectron spectroscopy (XPS) analysis shows that SnO is sensitive to oxygen. It is placed in air for about 2 months, and 81.8% of the crystal surface is oxidized to SnO2, but the inside of the crystal remains as SnO. Few layer crystal sheets was prepared by mechanical exfoliation with a thickness of 85 nm and a surface roughness of 1.02 nm, which provides a possibility for the application of few layers of SnO crystals to transparent and flexible electronic devices.
研究领域:
材料科学
·
表面科学
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2018
·Vol. 20
·期 32
·4651-4665
·
IF 3.304
Rui Zhang,Qi Wang,Jun Zhang,Lili Yin,Yao Li,Shu Yin,Wenbin Cao
Shape-controllable SnO microstructures were successfully synthesized via a facile inorganic alkali-assisted hydrothermal method. The morphologies of the prepared samples could be simply modulated from plate-like blocks to hierarchical architectures assembled using nanosheets with tuned thicknesses, including flowers, bird nests and microspheres, through varying the alkali used in the synthesis process. Based on the experimental results, the origins and detailed formation mechanisms of the plate-like and hierarchical SnO architectures were comprehensively proposed. It was found that the formation of SnO was governed by dissolution–recrystallization and an oriented attachment process; the different dissociation rates of various alkalis played an important role in the final SnO morphology. The thicknesses of the assembling nanosheets greatly decreased with an increase in the dissociation rates of the alkalis. Furthermore, it was proved experimentally that all the hierarchical SnO structures exhibited better photocatalytic activities than those of the plate-like structures in the photodegradation of MB under fluorescent and UV light irradiation. The microspheres, with decreased size and assembling nanosheets of decreased thickness, showed the highest activity for MB dye degradation owing to an increased specific surface area and the reduced recombination of photogenerated electron–hole pairs. The mechanism for the photocatalytic degradation of MB over SnO was discussed in detail.
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
Environmental Science-Nano
·
2023
·Vol. 10
·期 4
·1109-1125
·
IF 7.3
Xiao Huang,Wen Yan,Jingxiang Sun,Tao Hu,Jinxi Feng,Zhen Huang,Shuanghong Tian,Ya Xiong
The achievement of highly active and stable piezocatalysts is still challenging for the efficient transformation of mechanical energy to chemical energy. Herein various SnOxHy species were prepared by a simple precipitation–thermal treatment method and applied for the piezocatalytic degradation of tricyclazole. It is found that the catalytic activity depended on the thermal treatment and follows the order SnO(OH)2 (80 °C) > SnO2.55H1.1 (200 °C) > SnO2.3H0.6 (300 °C) > SnO2.22H0.24 (400 °C) > SnO2 (500 °C) > rutile SnO2 (800 °C). SnO(OH)2 (80 °C) boosted the degradation of tricyclazole and the reaction constant reached as high as 0.0354 min−1, 7.1 fold that of SnO2 (800 °C). The differences among these SnOxOHy piezocatalysts mainly stemmed from the dissimilarity of the relative content of SnO(OH)2. In addition to the Sn–O piezoelectric motif, SnO(OH)2 had rich hydrogen bond networks, which work like molecular springs under external pressure. Due to such a special structure, SnO(OH)2 had not only a super high piezoelectric constant (d33) of 409.1 pm V−1 among the currently reported piezomaterials, but also a 0.49 eV-higher valence band than SnO2, being beneficial to the generation of stronger oxidative ˙OH. This is the first example of inorganic hydrogen-bonded piezomaterials, which opens a new window to develop advanced piezocatalysts for highly efficient degradation of refractory pollutants by piezocatalysis.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2018
·Vol. 86
·期 2
·423-430
·
IF 1.745
Li Yanhong,Shi Min,Wang Meiri,Li Jing,Liu Yuanyuan,Cui Hongtao
A solution strategy performed at room temperature was presented for the in situ synthesis of SnO nanoparticles. SnO nanoparticles were prepared through the following sequent procedure: (1) preparation of rod-like Cd(OH)Cl utilizing the reaction between Cd 2+ ions and epoxide; (2) production of Sn 21 Cl 16 (OH) 14 O 6 template through the cation exchange reaction between Cd(OH)Cl and Sn 2+ ions; (3) formation of SnO nanoparticles on nickel foam by the in situ reaction in strong alkaline electrolyte solution before electrochemical measurement. The as-prepared SnO had very small particle size and ordered nanostructure of particulate sheet, therefore resulting in its excellent electrochemical performance including high specific capacitance and high electrochemical stability for the charge-discharge cycle. Hence, the SnO nanoparticles synthesized in this work could be considered as one promising metal oxide for the utilization as electrode material in supercapacitor.
SnO nanoparticles were prepared by an in situ template strategy. The synthetic procedure included the production of rod-like Cd(OH)Cl precursor at room temperature, preparation of platelet-like Sn 21 Cl 16 (OH) 14 O 6 template through a cation exchange reaction, and the in situ synthesis of SnO nanoparticles from the template on nickel foam. Due to the small particle size, SnO presented high electrochemical performance as electrode material for application in supercapacitor.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2018
·Vol. 29
·期 28
·284002
·
IF 3.404
Wenxiu Liu,Lili Yin,Rui Zhang,Hailian Yang,Jing Ma,Wenbin Cao
Three-dimensional (3D) SnO hierarchical architectures were synthesized via a one-step dissolution–precipitation route under room temperature using SnCl2 · 2H2O and Na2CO3 as the initial reagents. The morphology and size of the prepared SnO structures could be easily tailored by alternating the solvent from deionized water with absolute ethanol. The SEM observation showed that the prepared 3D SnO hierarchical architectures consisted of nanosheets. The size of the SnO hierarchical architectures could be effectively reduced from 4–10 μm to 1–2 μm when the solvent was changed from water to ethanol while the thickness of the assembling nanosheets was reduced from 200–500 nm to 20–30 nm at the same time. The possible formation mechanism of the 3D SnO hierarchical architectures is proposed in this paper. The photodegradation of methylene blue revealed that the SnO hierarchical structures prepared using ethanol as the solvent exhibit much better photocatalytic activity due to its smaller particle size, larger specific surface area, and appropriate band structure as well.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
MATERIALS & DESIGN
·
2017
·
IF 4.364
Zijian Su,Yuanbo Zhang,Benlai Han,Bingbing Liu,Manman Lu,Zhiwei Peng,Guanghui Li,Tao Jiang
Chemical vapor transport (CVT) process is a simple and efficient method for synthesizing nano-SnO products, and previous references reveal that the CVT process is characterized as high temperature and long synthesis time. Our previous studies indicated that SnO 2 was easily reduced to solid-state SnO and then volatilized as gaseous SnO under certain CO-CO 2 atmosphere, so that a novel CVT process under CO-CO 2 atmosphere was proposed in the present work. The nano-SnOs synthesized by the CVT under 15 vol% CO/(CO + CO 2 ) atmosphere were characterized using XRD , SEM, TEM, XPS , etc. The results showed that tetragonal structure nano-SnO diskette and sphere with uniform granularity of 50–100 nm were obtained with high purity. During the CVT process, CO-CO 2 mixed gases could reduce SnO 2 to SnO and act as a CVT medium to take away the newly formed gaseous SnO, resulting in the decrease of the partial pressure of SnO. In addition, the nano-SnOs could enhance the SCR deNOx activity of activated carbon (AC), and both the reaction temperature window of AC and the NO conversion were increased if the AC was coated by nano-SnOs.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2023
·Vol. 129
·期 11
·794
·
IF 2.7
Wang Xuekai,Cao Yongze,Yan Xianglan,Li Lei,Zhang Xizhen,Zhang Jinsu,Chen Baojiu
17K 2 O–33SnO–50P 2 O 5 –xMnCl 2 glasses with x = 0, 0.6, 1.2, 1.8, 2.4, 3.0 were made using melt quenching at 500 °C low temperature. The structure and photoluminescence properties of these glasses were investigated, and the water resistance was evaluated. The experimental results show that the effectively energy transfer from Sn 2+ to Mn 2+ occurs, and when Mn 2+ doping at 3.0, the energy transfer efficiency reaches 74%. Under 340 nm excitation, the emission wavelength is in the range of 500–800 nm, covering the absorption wavelength of chlorophyll P R and P FR , which indicates that the low temperature glasses can be used for plant cultivation. This glass material was immersed in water for 24 h, and the luminescence intensity decreases 10%. This indicates that the glass material has certain waterproof property.
研究领域:
材料科学
·
农业光学
·
无机非金属材料
·
光生物学
·
功能玻璃
✓ 已验证
DOI
高影响因子
IEEE SENSORS JOURNAL
·
2022
·Vol. 22
·期 8
·7590-7598
·
IF 4.325
Ruiqin Gu,Yunong Zhao,Huibing Fu,Jianxian Yang,Zhixiang Hu,Long Li,Hua-Yao Li,Qing Huang,Bingbing Chen,Huan Liu
Chemically modified electrode (CME) has shown significant potential for achieving on-site and real-time detection of heavy metal ions. In this paper, a nanocrystalline SnO2-modified Au electrode as an electrochemical sensor for ultrasensitive mercury ion (Hg2+) detection was proposed and demonstrated. The modification method is simply employing the spin-coating process of colloidal SnO2 quantum wires at room temperature in ambient air without further heat treatment. Nanocrystalline SnO2 possesses a large surface area with abundant dangling bonds, through which the enrichment and dissolution of ions were enhanced and converted to significant current signal under anodic stripping voltammetry (ASV) scanning mode. According to the results of DFT analysis, SnO2 has a greater adsorption energy for Hg2+ than that of Au, which further improves its sensitivity. The nanocrystalline SnO2-modified electrode exhibits sensitive response to Hg2+ in the range of 10−9 M~10−4 M, with the limit-of-detection (LOD) of 0.036 nM. The selectivity was ascribed to the higher adsorption energy of Hg on SnO2 surface compared with other metals in this study. The electrode modification strategy based on colloidal semiconductor nanocrystals may promote the design of sensitive sensors for rapid and reliable ion detection.
研究领域:
分析化学
·
环境监测
·
电化学
·
传感器技术
·
纳米材料
·
重金属检测
✓ 已验证
DOI
高影响因子
Chemistry-An Asian Journal
·
2025
·
IF 3.3
Shoaib Khan,Aoxue Wang,Jiayin Liu,Iltaf Khan,Laiba Mujahid,Meng Ruijin,Samreen Sadiq,Saeed Zaman,Aftab Khan,Sohail Khan,Mansoor Khan,Yuanyang Miao
In last few decades, the agriculture sector is facing various type of crops diseases originated by crop pests. Among various crops the tomato plant is greatly affected by many pests such as aphids and whiteflies, which are badly decreasing tomato plant yield and effecting its growth. In last few years, various type of pesticides such as Neonicotinoids and Pyrethroids are employed which are badly effecting eco-system and water bodies. In this research work, we prepared SnO 2 nanosheets (SONS) by in-situ and green synthesis approach. Remarkably, SONS exhibit a larger surface area, tailored pore size, and higher catalytic performance than SnO 2 nanoparticles (SONP). To further improve the efficiency of SONS, we coupled it with covalent organic farmwork nanosheets (COFNS) via the hydrothermal approach. The SONS@COFNS hybrid nanocatalysts exhibit improved carrier migration, enhanced porosity, multiple active sites, and exceptional light absorption capabilities. The as prepared green nanomaterials delivered improved activities for Neonicotinoids and Pyrethroids degradation. Remarkably, the most active sample 6COFNS/SONS showed the highest degradation efficiency (94 %), which is approximately 1.92 times higher than the degradation efficiency of pristine SONS (49 %). This work will ultimately contribute to developing green, ecofriendly nanomaterials for pesticides degradation and promoting tomato plants growth.
研究领域:
农业科学
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Jingrui Kang,Rui Gu,Xu Guo,Jing Li,Hongchen Sun,Leiyang Zhang,Ruiyi Jing,Li Jin,Xiaoyong Wei
NASICON-type structured compounds Li 1+ x M x Ti 2- x (PO 4 ) 3 (M = Al, Fe, Y, etc.) have captured much attention due to their air stability, wide electrochemical window and high lithium ion conductivity. Especially, Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) is a potential solid electrolyte due to its high ionic conductivity . However, its actual density usually has a certain gap with the theoretical density, leading the poor ionic conductivity of LATP. Herein, LATP solid electrolyte with series of SnO–P 2 O 5 –MgO (SPM, 0.4 wt%, 0.7 wt%, 1.0 wt%, 1.3 wt%) glass addition was successfully synthesized to improve the density and ionic conductivity. The SPM addition change Al/Ti–O bond and P–O bond distances, leading to gradual shrinkage of octahedral AlO 6 and tetrahedral PO 4 . The bulk conductivity of the samples increases gradually with SPM glass addition from 0.4 wt% to 1.3 wt%. Both SPM and the second-phase LiTiPO 5 , caused by glass addition, are conducive to the improvement of compactness. The relative density of LATP samples increases first from 0 wt% to 0.7 wt%, and then decreases from 0.7 wt% to 1.3 wt% with SPM glass addition. The grain boundary conductivity also changes accordingly. Especially, the highest ionic conductivity of 2.45 × 10 −4 S cm −1 , and a relative density of 96.72% with a low activation energy of 0.34 eV is obtained in LATP with 0.7 wt% SPM. Increasing the density of LATP solid electrolyte is crucial to improve the ionic conductivity of electrolytes and SPM glass addition can promote the development of dense oxide ceramic electrolytes.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Jia Li,Jianfeng Zheng,Xingmin Liu,Yatao Yang,Xiaojin Han,Zhanggen Huang
Photoelectrochemical reduction of CO 2 with H 2 O into syngas (H 2 /CO) is considered as an important platform to organic chemicals, which can effectively alleviate the greenhouse effect and energy dependence. We synthesized SnO/g-C 3 N 4 p-n junction catalyst with matched energy band, which shows enhanced light absorption performance and photogenerated charge separation efficiency. The M − S plots verified the successful construction of p-n type heterojunctions , and the investigations of LSV , EIS , PL and transient photocurrents test indicate that the recombination rate of charge is well inhibited by the design of p-n heterojunction. In this work, the syngas derived from PEC reduction of CO 2 and H 2 O is achieved by the SnO/g-C 3 N 4 photocathode with a total FE of 70% at an external bias of −1.5 V. In addition, the H 2 /CO molar ratio can be tuned from 1.5 to 10 by controlling the applied voltage. The study may inspire a new thought for the design of high-performance photoelectric catalyst and a promising strategy for PEC CO 2 reduction to valuable carbon-based compounds.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 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）