JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
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2020
·Vol. 34
·期 6
·1408-1414
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IF 0.64
Zhang Chenxu,Wu Xiangfeng,Zhang Mi,Zhang Jiarui,Su Junzhang,Wang Yijin,Li Hui,Wang Chao,Wang Kaiyuan,Sun Guowen
SnO 2 /AgIO 4 hybrids were fabricated by an in-situ synthetic method at room temperature. The structure, morphology, light response range, separation efficiency of the electron-hole pairs and elements of the as-synthesized samples were characterized by adopting X-ray diffraction, scanning electron microscopy, UV-Vis diffuse reflectance spectroscopy, electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy, respectively. The synergistically photocatalytic degradation mechanism of the as-synthesized composites was also proposed. The experimental results reveal that under the visible light irradiation the as-synthesized SnO 2 /AgIO 4 hybrids can enhance the photocatalytic degradation efficiency of rhodamine B compared to pure samples. With increasing the molar ratios of AgIO 4 to SnO 2 , it displays the trend of first increasing and then decreasing. When it is 1:2 in 150 min, the as-prepared hybrids have the highest degradation efficiency of 93.1%, which increases by 6550.0%, 30.5%, and 1505.0% compared to those of pure SnO 2 , AgIO 4 , and TiO 2 (P25), respectively. Moreover, the Sn-O-Ag cross-linking bonds are formed at the interfaces of SnO 2 and AgIO 4 . In addition, superoxide anion radicals and holes play a major role in the process of photodegradation.
研究领域:
材料科学
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环境科学
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光化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2023
·
IF 4.8
Chang Su,Chunping Dong,Ding Jiang,Xueling Shan,Zhidong Chen
Acetamiprid is a kind of broad-spectrum pesticides that has been largely applied in agriculture and household pest control. In this paper, a simple, novel and highly sensitive electrochemiluminescence aptamer sensor (ECL aptasensor) based on Ag 3 PO 4 -NH 2 -SnO 2 was proposed. The ECL signal was greatly amplified with the synergistic effect of Ag 3 PO 4 and NH 2 -SnO 2 (Ag 3 PO 4 -NH 2 -SnO 2 ) which was dropped on a glass carbon electrode (GCE) and used as working electrode. We designed an “on–off” ECL sensing strategy for the sensitive and specific detection of acetamiprid. Under the optimal conditions, the linear range of the sensor for acetamiprid detection was 1.0 × 10 −11 ∼ 1.0 × 10 −5 M, with a detection limit of 2.5 × 10 −12 M (S/N = 3). The method showed simple and fast operation, high sensitivity and selectivity, strong anti-interference ability and good stability. More importantly, the developed aptasensor exhibited excellent recognition ability towards residual acetamiprid in actual water samples, which might open promising avenues to develop new ECL systems for biological analysis and environmental water monitoring.
研究领域:
分析化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hui Xu,Haoran Zhong,Jinwu Hu,Xianjun Rong,Wenhui Zhang,Yinsheng Wang,Shengjuan Li,Guisheng Li,Ding Wang
Aiming to achieve high-sensitivity volatile organic compounds (VOCs), it is of great significance to continuously enhance the sensing performance of metal oxide based sensors. Herein, novel NiO nanoplates-decorated on SnO 2 nanofibers 1D core–shell structures derived from metal-organic frameworks (MOFs) are fabricated by the facial solvothermal method and heat treatment for VOCs gas sensors. The morphology and composition of 1D core shell SnO 2 @NiO are regulated by solvothermal time in the range of 0 ∼ 24 h. Based on the unique structure and composition of SnO 2 @NiO, SnO 2 @NiO with 4 h solvothermal time (denoted as SnO 2 @NiO-4) exhibits excellent selectivity, high response (R a /R g = 25.6) and low detection limit as well as good response linearity between response and concentration of xylene. Especially, the obtained SnO 2 @NiO-8 and SnO 2 @NiO-16 show the high sensitivity to acetone (R a /R g = 28.7) and triethylamine (R a /R g = 13.7), respectively. Structural characterizations such as SEM, TEM, and Mott-Schottky results demonstrate the core–shell structure with p-n heterojunction. In-depth investigations on reaction mechanism reveal XPS, photoluminescence (PL), and ESR testing reveal the intrinsic defects such of oxygen vacancy and Ni 3+ active sites. And in situ FTIR, online mass spectroscopy, as well as UV/UPS analysis further discover the evolution of intermediates and products during the surface catalysis reaction. These results demonstrate that the remarkable sensing performance of SnO 2 @NiO-8 can be attributed to several factors, including abundant oxygen vacancy, formation of p-n heterostructure and efficient Ni 3+ /Ni 2+ catalyzing, which beneficial for increased active sites and enhanced electron transport. This synthetic strategy provides an effective method for the facile engineering of high-performances metal oxide-based sensors towards practical health assessment.
研究领域:
材料科学
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化学工程
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Yuanzhen He,Dengjie Zhong,Yunlan Xu,Ran Jiang,Jiayou Zhang,Pengfei Liao
A La-doped Ti/SnO2-Sb2O4 electrode with TiO2-NTs intermediate layer (Ti/TiO2-NTs/SnO2-Sb2O4-La) was created via the electrodeposition technique. The physicochemical and electrochemical properties of the electrode were analyzed through FESEM, XRD, XPS, CV, and LSV electrochemical tests. The results showed that TiO2-NTs were tightly packed on the surface of Ti substrate, thus improving the binding force of the SnO2-Sb2O4-La coating, offering greater specific surface area, more active spots, higher current response, and longer lifespan for the degradation of rhodamine B. The lifespan of the Ti/TiO2-NTs/SnO2-Sb2O4-La electrode reached 200 min (1000 mA cm–2, 1 M H2SO4), while the actual service life was up to 3699 h. Under the conditions of initial pH 3.0, Na2SO4 concentration of 0.1 M, current density of 30 mA cm–2, and initial rhodamine B concentration of 20 mg L–1, the color and TOC removal rate of rhodamine B reached 100% and 86.13% within 15 and 30 min, respectively. Rhodamine B was decomposed into acids, esters, and other molecular compounds under the action of •OH and SO4•– free radicals and electrocatalysis, and finally completely mineralized into CO2 and H2O. It is anticipated that this work will yield a novel research concept for producing DSA electrodes with superior catalytic efficacy and elevated stability.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Chuang Li,Dan Wang,Norihiro Suzuki,Chiaki Terashima,Yichun Liu,Akira Fujishima,Xintong Zhang
Oxygen evolution over semiconductor photoanodes plays a decisive role in water splitting via photoelectrochemical (PEC) process. While the hematite photoanode with a photocurrent threshold of 600 nm is promising for practical PEC water oxidation, it still suffers from the small minority carrier diffusion length, which makes it difficult to realize adequate light absorption and efficient charge separation concurrently. To address this issue, hematite nanorods were grown on macroporous SnO 2 :Sb substrates, forming a coral-like hematite (ATO-Fe 2 O 3 ) photoanode. The ATO-Fe 2 O 3 photoanode exhibited a 150 mV cathodic shift of onset relative to Fe 2 O 3 nanorods directly on planar SnO 2 :F (FTO-Fe 2 O 3 ). The photocurrent density reached 1.32 mA cm −2 at 1.23 V vs. RHE, approximately 8.8 times higher than FTO-Fe 2 O 3 , and it was further increased to 1.81 mA cm −2 after passivation with a thin TiO 2 overlayer. The improved photocurrent was attributed to the increased light harvesting, reduced charge transfer resistance (R ct ), and smaller contact area of oxygen bubble to hematite photoanode. Our research confirmed the effectiveness of macroporous ATO templated coral-like morphology on balancing the adequate light absorption and efficient charge separation issues of hematite photoanodes. This research may also be applicable to other semiconductor photoanodes for high-efficiency PEC water splitting.
研究领域:
材料科学
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能源转换
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光催化
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Hui Li,Shushu Chu,Qian Ma,Hang Li,Quande Che,Junpeng Wang,Gang Wang,Ping Yang
One-step single-spinneret electrospinning synthesis of 1D fibrous hierarchical structure can not only prevent the agglomeration or restacking of fibers or particles and enlarge surface active area but also promote the directional migration of electrons in materials and achieve effective regulation of resistances. Herein, tunable SnO2 and SnO2/ZnO fibrous hierarchical structures with in situ growth of monodisperse spherical-like particles on surface provide a new sight for adjusting component distribution, surface absorption and chemical reaction, electronic transmission path, and electron transfer efficiency. Compared with SnO2 porous fibers and SnO2 hierarchical structures, the optimal SnO2/ZnO sensors exhibit superior gas-sensing response value of 366–100 ppm ethanol at 260 °C as well as excellent gas selectivity and long-term stability, in which the enhanced gas-sensing mechanism is primarily derived from multilevel effective heterojunctions with unique interface electronic effects. Especially, these SnO2-based sensors can achieve favorable linear relationship of the response and gas concentration for sensitive trace detection in cosmetics for the first time, providing a new strategy to design composite materials for quantitative analysis of volatiles in the cosmetics evaluation process.
研究领域:
材料科学
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传感器技术
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RARE METALS
·
2023
·Vol. 42
·期 4
·1214-1226
·
IF 8.8
Jiang Qing-Chun,Li Jin,Yang Yu-Jie,Ren Yu-Jie,Dai Lei,Gao Jia-Yi,Wang Ling,Ye Jia-Ye,He Zhang-Xing
Metal–organic framework (MOF) and its derivatives have low-cost, controllable structure, and good catalytic performance, which are often used in the electrochemical field. In this work, SnO 2 in situ modified graphite felt (SnO 2 /GF) is prepared by hydrothermal method then simple thermal treatment using Sn-based MOF (Sn-MOF) as precursor. SnO 2 is uniformly and firmly distributed on the GF surface rather than the common agglomeration and poor bonding of metal oxides on carbon-based electrodes, providing stable active centers for the VO 2+ /VO 2 + and V 2+ /V 3+ redox reactions. At 250 mA·cm −2 , the energy efficiency of the battery with SnO 2 /GF remains at 63.2%, while the blank one has failed. The former battery, at 100 mA·cm −2 , has higher energy efficiency and good cycle stability (over 200 cycles). The battery performance of this study is better than that of most previous report in metal oxide-related work. This work obtains high-performance composite electrode by simple treatment of MOF, which provides a reference for the application of MOF in vanadium redox flow battery.
Graphical abstract
研究领域:
材料科学
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电化学
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能源存储与转换
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2016
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IF 4.758
Ziying Wang,Chen Zhao,Tianyi Han,Yong Zhang,Sen Liu,Teng Fei,Geyu Lu,Tong Zhang
Reduced graphene oxide (RGO)-based NO 2 sensors have attracted considerable attention due to their excellent advantages of low power consumption and manufacturability to facilitate massive deployment. However, it is still a great challenge to fabricate RGO-based room-temperatureNO 2 sensors with excellent sensing performances. Herein, we have demonstrated a combined surface modification and heteroatom doping approach to enhance the sensing performances of RGO-based room-temperature NO 2 sensors, where SnO 2 nanoparticles modified nitrogen-doped RGO (SnO 2 /N-RGO) hybrids had been used as sensing materials. The SnO 2 /N-RGO hybrids were prepared by hydrothermal synthesis method using SnCl 4 , GO and urea as precursors. The combined characterizations of X-ray diffraction (XRD), energy-dispersive X-ray spectrometer (EDS), elemental mapping, X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), Raman spectra as well as N 2 sorption isotherm were used to characterize the materials thus obtained, indicating the successful preparation of SnO 2 /N-RGO hybrids. During the hydrothermal progress, SnCl 4 conversed into SnO 2 nanoparticles (NPs), and GO was reduced into RGO, while urea was decomposed into nitrogen-containing molecule and doped into RGO. It is found that SnO 2 NPs with the size of 3–5 nm are uniformly dispersed on N-RGO nanosheets. Most importantly, SnO 2 /N-RGO hybrids-based sensor exhibits superior sensing performances toward NO 2 operated at room temperature, which are better than those of pure RGO and SnO 2 /RGO hybrids. For example, SnO 2 /N-RGO hybrids show response of 1.38 to 5 ppm NO 2 with the response time and recovery time of 45 s and 168 s. The excellent sensing performances are attributed to incorporation of N atoms into RGO and the modification of RGO with SnO 2 NPs. This novel sensor based on SnO 2 /N-RGO hybrids promises to provide an essential sensing platform for the detection of NO 2 with excellent sensing performances at room temperature.
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
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xiaohui Sun,Qinggang Li,Nana Liu,Bo Wang,Xuyang Zhang,Haining Qian,Yongsheng Lv,Xianhui Rong,Guohua Wu,Xiangwei Wang
The interface mismatch between electrochromic materials and conductive layer seriously affects the cycle stability of electrochromic smart windows (ESW). However, it is difficult to improve the interface matching at the same time because of the different physical and chemical properties of anode and cathode materials . In this work, SnO 2 nanosheets are used as the interface modification layer between electrochromic materials and conductive layer. SnO 2 interface engineering significantly can improve the cycle stability of WO 3 film and Prussian blue (PB) film. The WO 3 /SnO 2 -PB/SnO 2 complementary ESW exhibits a high optical modulation of 60.2 % at 633 nm, fast response time (bleached/colored time = 8.5/2.5 s), and coloration efficiency of 91.7 cm 2 C −1 . The WO 3 /SnO 2 -PB/SnO 2 device can still maintain an optical modulation of 45.2 % after 2000 cycles, suggesting excellent long cycle stability. And the device shows the energy storage of 5.06 mF cm −2 at 0.1 mA cm −2 , which can improve energy efficiency. The excellent electrochromic properties and energy storage suggests that SnO 2 interface engineering has a good application prospect in multi-functional ESW with excellent cycle stability.
研究领域:
材料科学
·
能源存储
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光学材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zhiyi Zhang,Zhihua Zhao,Chen Chen,Lan Wu
Volatile organic compounds (VOCs) constitute key pollutants in the environment, and exposure to them is associated with negative health impacts. The vigilant monitoring of these pernicious VOCs is imperative for their timely detection and for curtailing the likelihood of both immediate and prolonged exposure, thus safeguarding against the deterioration of environmental quality. In this study, porous PtRu nanoalloys are successfully synthesized via a hydrothermal method and innovatively integrated with SnO2 nanoparticles to significantly enhance the performance of gas sensors. Density functional theory (DFT) calculations substantiated the pivotal role of PtRu nanoalloys in amplifying the sensitivity of SnO2 to acetone. A primary challenge in VOC surveillance is achieving the selectivity required for sensors to accurately identify specific compounds. By employing machine learning algorithms, with a particular emphasis on particle swarm optimization-support vector machine (PSO-SVM), we attained a classification accuracy of 100% in distinguishing between acetone, ethanol, methanol, and formaldehyde. This study demonstrates the potential for creating advanced sensors with selective detection of VOCs.
研究领域:
环境科学
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材料科学
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计算机科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hui Zhang,Shisong Guo,Wenjun Zheng,Haichao Wang,Hua-Yao Li,Mei-Hui Yu,Ze Chang,Xian-He Bu,Huan Liu
Aiming to achieve high-sensitivity disease diagnosis, it is of great significance to continuously improve the sensing performance of metal oxide based sensors. The morphology and component of metal oxides can be rationally engineered by using metal–organic frameworks as highly versatile platforms. Herein, the bimetallic Sn/Zn-ZIF-8 is synthesized by self-assembly, and then SnO 2 -ZnO hollow nanoparticles are obtained by using bimetallic Sn/Zn-ZIF-8 as precursor. The obtained SnO 2 -ZnO composite maintained the dodecahedral structure of Sn/Zn-ZIF-8, and in which SnO 2 is orthogonal due to the framework-induced effect. Based on the unique structure and composition of SnO 2 -ZnO, 6% SnO 2 -ZnO exhibits excellent selectivity, high response, low detection limit (0.82 ppb) and good response linearity between response and concentration of acetone, showing the potential of the practical application in clinical diagnosis of diabetic patients. In-depth discussions reveal that the excellent sensing performance can be attributed to the n-n heterostructure of SnO 2 -ZnO that is favorable for electron transport, the larger adsorption energy to acetone that results from orthogonal SnO 2 , and the abundant active reaction sites provided by the dodecahedral mesoporous structure. This synthetic strategy may provide an effective method for the facile engineering of high-performances metal oxide-based sensors toward practical health assessment.
研究领域:
材料科学
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医学诊断
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传感器技术
✓ 已验证
产品关联
DOI
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
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气体传感
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环境监测
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废物回收
✓ 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）