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
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Zijian Su,Peng Du,Wei Hou,Qijie Guo,Qiuyu Li,Yuanbo Zhang
Along with the rapid development of modern industry and the continuous improvement of environmental protection standards, it was imperative to detect harmful gases. In this study, the SnO/SnO 2 core–shell homojunction was successfully prepared by the vapor-oxidate-solid (VOS) method and a simple heating experimental device with Sn-bearing e-waste as raw material. The gradient oxidation of SnO was researched by detecting the crystal structure, micro-morphology and surface chemical state at different temperatures. The SnO/SnO 2 -based sensor was used for the gas sensitivity test of NO 2 . At 150 °C, high response value, response time and recovery time of SnO/SnO 2 homojunction to 50 ppm NO 2 were 421, 39 s and 27 s, respectively, which had better sensing performance compared with commercial SnO 2 . Moreover, the mechanism analysis indicated that homojunction and oxygen vacancies were important reasons for improving the gas-sensing performance of SnO/SnO 2 homojunction. It provided an effective strategy for recycling Sn resources and promoted the application prospect of SnO/SnO 2 homojunction in the NO 2 sensing field.
研究领域:
材料科学
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纳米技术
·
气体传感
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环境监测
·
废物回收
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 13
·8934-8941
·
IF 3.9
Huaigang Su,Qin Zhao,Cheng Jiang,Yanan Wang,Yongfang Niu,Xuelian Li,Wenjing Lou,Yanxing Qi,Xiaobo Wang
A series of stannous oxide supported on rutile titanium dioxide (SnO/TiO2) were prepared by a conventional incipient wetness impregnation method, and their performance as catalysts for fatty acid esterification reactions was investigated. The effects of Sn precursors (SnCl2·2H2O or SnC2O4), loading amounts (5–15%), and treating ambiences (air and N2) were explored. The optimized 10% SnO/TiO2–Cl with SnCl2·2H2O as the Sn precursor and thermal treatment in N2 showed the best esterification performance. Specifically, 10% SnO/TiO2–Cl catalyzed the esterification process of trimethylolpropane and n-octanoic acid with a conversion of 99.6% over 5 h at 160 °C, and 10% SnO/TiO2–Cl was efficient for six catalytic cycles. Based on the results of X-ray diffraction (XRD), Raman spectra, high-resolution transmission electron microscopy (HRTEM), infrared spectra of pyridine adsorption (Py-IR), and ammonia temperature programmed desorption (NH3-TPD), the improved catalytic performance is supposed to be attributable to the high dispersion of the Sn species on 10% SnO/TiO2–Cl as the moderate Lewis acid sites.
研究领域:
催化
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Shuo Yu,Kui Hao,Na Zhu,Le Sun,Fangzhou Zhang,AiJun Li,Jianxin Tu
High-capacity Sn-based anodes for sodium-ion batteries (SIBs) face challenges from volume expansion, active material aggregation, and poor conductivity, collectively hindering electrochemical performance. Herein, we propose a synergistic spatial confinement strategy: Ultrafine SnO₂-SnS heterojunctions are uniformly anchored within a hierarchical porous graphene aerogel (GA/CSOS) via controlled sequential hydrothermal-sulfidation and SDS-assisted self-assembly. The GA/CSOS composite delivers exceptional stability and rate capability, achieving 554 mAh g⁻¹ after 200 cycles at 0.1 A g⁻¹ (with almost Coulombic efficiency >95 % after initial activation) and retaining 234 mAh g⁻¹ at 2 A g⁻¹ . The remarkable electrochemical performance originates from: (i) spatially confined ultrafine heterojunctions with uniform distribution suppressing aggregation/pulverization, and (ii) the hierarchical graphene providing conductive networks and volume buffering via mesopores. This structural design dramatically releases the theoretical capacity of the active material and promotes efficient charge transfer kinetics through continuous electronic pathways and layered ion diffusion channels. Our work establishes a novel design paradigm for high-energy-density SIBs through spatial confinement of uniformly dispersed ultrafine heterojunctions in hierarchical conductive frameworks.
研究领域:
材料科学
·
储能
·
纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 37
·19293-19307
·
IF 6.895
Fangmei Zhang,Shikai Liu,Na Zhang,Ye Kuang,Wenting Li,Shili Gai,Fei He,Arif Gulzar,Piaoping Yang
Hypoxia in tumor cells is regarded as the most crucial cause of clinical drug resistance and radio-resistance; thus, relieving hypoxia of tumor cells is the key to enhancing the efficacy of anticancer therapy. As a gas signal molecule of vasodilatation factors, nitric oxide (NO) can relieve the hypoxia status of tumor cells, thereby, enhancing the sensitivity of tumor cells to radiotherapy. However, considering complications of vascular activity, the level of NO required for radiotherapy sensitization cannot be obtained in vivo. In view of this, we design and fabricate a multifunctional bismuth-based nanotheranostic agent, which is functionalized with S-nitrosothiol and termed Bi–SNO NPs. X-rays break down the S–N bond and simultaneously trigger large amount of NO-releasing (over 60 μM). Moreover, the as-prepared Bi–SNO NPs not only possess the capability of absorbing and converting 808 nm NIR photons into heat for photothermal therapy, but also have the ability to increase X-ray absorption and CT imaging sensitivity. In addition, the collaborative radio-, photothermal-, and gas-therapy of Bi–SNO in vivo was further investigated and remarkable synergistic tumor inhibition was realized. Finally, no obvious toxicity of Bi–SNO NPs was observed in the treated mice within 14 days. Therefore, the Bi–SNO developed in this work is an effective nano-agent for cancer theranostics with well-controlled morphology and uniform size (36 nm), which could serve as a versatile CT imaging-guided combined radio-, photothermal- and gas-therapy nanocomposite with negligible side effects.
研究领域:
癌症治疗
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纳米技术
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放射学
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诊疗一体化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Sustainable Metallurgy
·
2022
·Vol. 8
·期 2
·754-767
·
IF 3.068
Zhang Lili,Yue Qiao,Yang Hongwei
The high-temperature volatilization behavior of the SnO–SiO 2 and SnO–CaO–SiO 2 slag systems was studied by simultaneous thermal analysis. The volatilization characteristics of the two systems with different SnO contents and different heating rates were discussed, and the kinetic parameters, reaction mechanism, and thermodynamic parameters of the volatilization reaction of the slag system at high temperature were calculated. The results of thermal analysis show that the volatilization of tin slag at high temperature is related to the activity of SnO and the decomposition of stannous silicate in tin slag. The slag system has obvious volatilization effect when the content of SnO is more than 60% in the SnO–SiO 2 binary slag system. When CaO is added into the binary slag system, the volatilization of slag system becomes easier. The volatilization rate decreases with increasing heating rate. The volatilization kinetic parameters and mechanism functions of the SnO–SiO 2 and SnO–CaO–SiO 2 systems were calculated by Coats–Redfern and Achar–Brindley–Sharp–Wendworth methods. It is concluded that the volatilization of tin slag at high temperature is controlled by three-dimensional diffusion mechanism. The mechanism function is Jander equation with integral form of [1 − (1 − α ) 1/3 ] 2 and the differential form of 3/2(1 − α ) 2/3 [1 − (1 − α ) 1/3 ] −1 . The rate constants of the SnO–SiO 2 and SnO–CaO–SiO 2 systems are \(k\, = \,1.36\, \times \,10^{16} \,\exp \,\left( {{{ - \,61408.61} \mathord{\left/ {\vphantom {{ - \,61408.61} T}} \right. \kern-\nulldelimiterspace} T}} \right)\) and \(k\, = \,1.61\, \times \,10^{17} \,\exp \,\left( {{{ - \,64869.66} \mathord{\left/ {\vphantom {{ - \,64869.66} T}} \right. \kern-\nulldelimiterspace} T}} \right)\) , and the isokinetic temperatures are 1174.4 and 1208.3 °C, respectively. Finally, the thermodynamic parameters of the slag system in the high-temperature volatilization process are discussed. The activation enthalpy ΔH of the SnO–SiO 2 and SnO–CaO–SiO 2 systems is 498.33 and 526.96 kJ/mol, respectively. The activation Gibbs free energy ΔG is 436.56 and 433.87 kJ/mol, and the activation entropy ΔS is 42.66 and 62.84 J/(mol K), respectively. Graphical Abstract
研究领域:
冶金学
·
材料科学
✓ 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
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2020
·Vol. 20
·期 3
·1832-1837
·
IF 1.134
Wu Han,Song Haizeng,Lin Zixia,Yan Shancheng,Shi Yi
Tin monoxide is a kind of IV–VI metal monoxides that has attracted great deal of attention due to its wide optical band gap and high field effect mobility in the past decade. On the other hand, nanoshell is a unique porous structure. Its curved shell provides a shelter for the
hollow core, as well as a much bigger special surface area. We in this study systematically prepared SnO nanoshells through a facile self-assembly method under different annealing conditions. The lithium ion batteries were fabricated immediately based on the as prepared nanoshells. The capacity
of as fabricated lithium ion batteries was 559.3 mAhg-1 at rate performance of 0.1 Ag-1 and 497.5 mAhg-1 at 1 Ag-1 in 30th cycle. This work exhibited high application performance of SnO nanoshells. We hope this work will help study similar structure
and applications of IV–VI metal monoxides.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
Chemistry-Switzerland
·
2026
·Vol. 8
·期 5
·56
·
IF 2.6
Huan Yi,Xiaoshuai Wang,Junjie Yang,Yanjie Fang,Shaolong Huang,Zhengyuan Jin,Ribao Feng
An effective strategy for significantly enhancing photocatalytic activity of composite materials is to construct heterojunctions. Herein, a series of imidazole-modified heterostructured g-C3N4/SnO (CNIS) Z-scheme photocatalysts were prepared by calcination methods, leading to superior photocatalytic performance than pure SnO and imidazole-modified g-C3N4. Rhodamine B (Rh B) aqueous solution was taken as the target pollutant, and the result presented that both imidazole modification and the Z-scheme heterojunction construction benefited from significant enhancement in photocatalytic activity. Moreover, it is revealed that electrons were transferred from imidazole-modified g-C3N4to SnO through the interface of the composite by XPS analysis. Under visible light (>420 nm) irradiation, the built-in electric field, band edge bending, and Coulomb interaction work synergistically to drive the recombination of relatively useless electrons and holes in the hybrid. As a result, the residual electrons and holes, which possess enhanced reducibility and oxidizability, endow the composite with exceptional redox capability. This research can not only deepen our comprehension of designing and fabricating innovative Z-scheme heterojunction photocatalysts but also presents an effective approach to tackle environmental pollution issues in the future.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Qian Zhang,Guoming Li,Zhu Ma,Yi Chen,Zhuowei Du,Wei You,Junbo Yang,Yixian Li,Hao Du,Zhuo Lv,Dengqian Xiang,Bo Chen,Hong Yu,Maozhu Mao,Cheng Huang,Yan Xiang,Jian Yu,Yaohua Mai,Kuan Sun,Ningqiang Xuan,Kai Yue
SnO 2 stands as a prominently employed material as electron transport layer (ETL) for perovskite solar cells (PSCs). Nevertheless, SnO 2 films prepared at low temperatures are accompanied by defects that will influent the transport of carriers at the interface, misalignment of energy levels, and the quality of thin perovskite film formation. Here, we introduce 4-aminobenzoic acid ethyl ester (4-AN), characterized by its carbonyl (C O) and amino (-NH 2 ) groups, as a synergistic defect passivation agent on the surfaces of SnO 2 and perovskite films. This approach aims to enhance the electron transport properties of SnO 2 . By optimizing the energy alignment between SnO 2 and perovskite, 4-AN facilitates more efficient extraction of interfacial carriers, while also promoting the crystalline quality of perovskite films and suppressing carrier recombination at the interface. The long alkyl chains at the end play an important role in relieving the interfacial contact and help to enhance the SnO 2 /perovskite interfacial connection. Compared with pristine SnO 2 , the PSCs based on 4-AN modified SnO 2 obtained an optimal efficiency of 21.83 %, while the devices maintained 90 % and 83 % of their initial PCE after storage for 1000 h in an N 2 environment and humidity of 30–50 %. This work provides valid insights for the development of novel interface modification materials.
研究领域:
材料科学
·
能源化学
·
光电工程
✓ 已验证
DOI
高影响因子
ACS Applied Electronic Materials
·
2019
·
IF 0
Weihao Wang,Qiufan Liao,Xiaoli Peng,Qiaoqi Lu,Zhao Li,Tao Zhang,Fengzhi Wang,Xinhua Pan,Yu-Jia Zeng,Zhizhen Ye
Tin monoxide (SnO) is a p-type semiconductor which is promising in field effect transistors (FETs) applications. However, nanostructure SnO has hardly been applied in FETs due to its stability issue. Herein, oleylamine protected Ag@SnO core–shell nanostructures have been synthesized by a hydrothermal method and configured as FETs. X-ray diffraction, Raman spectroscopy and X-ray photoelectron spectroscopy measurements are carried out to confirm the formation of pure phase SnO. The Ag@SnO core–shell single nanostructure FETs and thin film transistors are successfully fabricated on Si/SiO2 substrates. The doping of Ag in SnO and the formation of Schottky junction between SnO and Ag effectively improve the performance of FETs. The Ag nanowire (NW) core provides the unhindered carrier transport route, and the Schottky junction formed between Ag NW and SnO effectively constrains the leakage current. The nanostructure FETs show typical p-type characteristics with a premium on/off ratio (Ion/Ioff) of 3.3 × 105, a subthreshold swing of 0.09 V dec–1 and a high p-type field effect mobility (μFE) of 1.93 cm2 V –1 s –1. The excellent properties of Ag@SnO NWs FETs promise to be important for the next-generation p-type FETs.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
MATERIALS CHEMISTRY AND PHYSICS
·
2019
·
IF 2.781
Hongjian Chen,Xue Wang,Lixiu Guan,Lei Chen,Junguang Tao
Tin monoxide is an important functional material , which is widely used in energy storage and optoelectronic devices. In this work, SnO micro-plates were synthesized by low-temperature hydrothermal method using aqueous ammonia as reducing agent. The thickness and surface morphology of the SnO micro-plates were delicately controlled by adjusting ammonia concentration. It is shown that surface modification has significant effect on their supercapacitor performance. Specifically, an ultra-high specific capacity of 1080 F•g −1 is obtained, which reaches ~75% of its theoretical faradaic capacitance value. Considering the typical thickness of ~250 nm, the electrons/ions can diffuse ~90 nm into the sample. In addition, the capacity remains an impressive value of 849 F•g −1 after 1000 cycles at current density of 1 A•g −1 , suggesting excellent stability. Our studies show that the non-transition metal oxide, SnO, is a promising supercapacitor electrode material with high specific capacity and good cycle stability.
研究领域:
材料科学
·
能源存储
✓ 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）