ELECTROANALYSIS
·
2017
·Vol. 29
·期 9
·2044-2052
·
IF 2.851
Yongqin Liu,Lu Wang,Lingxi Yang,Yi Zhan,Lina Zou,Baoxian Ye
This paper demonstrated using polyethylenimine (PEI)-functionalized graphene (Gr) incorporating tin oxide (SnO 2 ) hybrid nanocomposite as a platform for nonenzymatic H 2 O 2 electrochemical sensor. The results of UV-vis spectroscopy and X-ray diffraction (XRD) confirmed the simultaneous formation of tin oxide (SnO 2 ) nanocomposite and reduction of graphene oxide (GO). Transmission electron microscopy (TEM) images showed a uniform distribution of nanometer-sized tin oxide nanoparticles on the grapheme sheets, which could be achieved using stannous chloride (SnCl 2 ) complex instead of tin oxide as precursor. The electrochemical measurements, including cyclic voltammetry (CV) and amperometric performance (I-t), showed that the PEI-functionalized Gr supported SnO 2 (SnO 2 -PEI-Gr) exhibited an excellent electrocatalytic activity toward the H 2 O 2 . The corresponding calibration curve of the current response showed a linear detection range of 9×10 −6 ∼1.64×10 −3 mol L −1 , while the limit of detection was estimated to be 1×10 −6 mol L −1 . Electrochemical studies indicated that SnO 2 and functionalized Gr worked synergistically for the detection of H 2 O 2 .
研究领域:
电化学
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纳米材料
·
传感器
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 25
·19601-19612
·
IF 3.84
Tigang Duan,Ye Chen,Qing Wen,Ying Duan
Sb-doped SnO2 electrode was fabricated by the one-step pulse electro-codeposition method, and was modified through either cerium dioxide nanoparticle (nano-CeO2) or cerium ion doping. The results showed that the effects of nano-CeO2 doping and cerium ion doping are quite different. Nano-CeO2 doping shrinks the unit cell volume, improves the degree of crystallinity and refines crystalline grains, while cerium ion doping expands the volume and deteriorates the crystallinity. Nano-CeO2 doping mitigates the surface antimony enrichment and promotes the complete oxidation of antimony so that the majority of antimony oxidation states exist as the Sb5+ state, but cerium ion doping aggravates the enrichment and increases the Sb3+ content. Electrochemical phenol degradation showed that the Ti/Sb–SnO2–CeO2 electrode has a higher degradation efficiency and its kinetic rate constant is 1.46 times as much as that of Ti/Ce–Sb–SnO2. Besides, due to the compact active layer of Ti/Sb–SnO2–CeO2 protecting the titanium substrate from passivation, the accelerated service lifetime of Ti/Sb–SnO2–CeO2 is prolonged, which is 1.28 times as long as that of Ti/Ce–Sb–SnO2.
研究领域:
电化学
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材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
B.L. Zhu,X.J. Cai,C.C. Wang,J. Wu,J.L. Yao,W.Q. Sun
Sb-doped SnO 2 (ATO) films were prepared with different RF powers ( P RF ) under two O 2 flow rates ( F O 2 ) by magnetron sputtering , and then subjected to rapid thermal annealing (RTA) treatment. The effects of P RF , F O 2 , and RTA on the crystallinity, stress, surface morphology , conductive properties, transmittance in visible-light range ( T Vis ), and energy gap ( E g ) of the films were investigated. As the P RF increases, the film crystallinity improves or first improves and then slightly degrades, and the compressive stress decreases. With increasing P RF , the surface changes from textured to granular morphology and from granular to honeycomb-like morphology under two F O 2 , respectively. Meanwhile, the conductive properties first enhance and then degrade, and the T Vis and E g tend to decrease, especially at higher P RF . Basically, the films prepared with higher F O 2 have lower compressive stress, inferior conductive properties, and larger T Vis and E g compared with the films prepared with lower F O 2 . After RTA, the film crystallinity obviously improves, the compressive stress transforms into tensile stress , and the surface morphology has not undergone significant changes. Meanwhile, the conductive properties significantly enhance and E g obviously increases. The T Vis of the films prepared with lower F O 2 can be increased by RTA. The influence mechanisms of the above factors on the structure and optoelectronic properties of the ATO films were explored, and ultimately, the ATO films have the T Vis of 76.35–80.86%, sheet resistance of 51.7–91.9 Ω/sq., and quality factor of 1.03–1.67 × 10 −3 Ω −1 within the optimized P RF range. Polymer-dispersed liquid crystal (PDLC) films were fabricated using optimized performance ATO films as electrodes, and their on-state transmittance, off-state transmittance, threshold electric field, and saturation electric field were 2.08–4.61%, 61.69–68.56%, 0.656–0.796 V/μm, and 1.68–2.108 V/μm, respectively. The current results indicate the potential application of ATO films in PDLC films as electrode.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2018
·
IF 4.841
Siyi Li,Meng Zhang,Xue Ma,Jing Qiao,Hongbo Zhang,Jun Wang,Youtao Song
In this work, an ortho-symmetric double (OSD) Z-scheme SnO 2 \CdSe/Bi 2 O 3 sonocatalyst is skillfully designed and synthesized via ultrasonic-assisted isoelectric point method and then the sonocatalytic activity is studied under ultrasonic irradiation in the degradation of organic contaminants. The effects of ultrasonic irradiation time, sonocatalyst dosage, initial Rhodamine B concentration, organic dye kind and used times are investigated systemically. The formation of OH and h + are confirmed by using t-BuOH and oxalate, respectively. The Rhodamine B can completely be degraded under given experimental conditions such as 10 mg/L Rhodamine B solution, 1.00 g/L OSD Z-scheme SnO 2 \CdSe/Bi 2 O 3 dosage and 150 min ultrasonic process. The formation of mainly intermediate products is studied by Liquid Chromatography–Mass Spectrometry. Moreover, the sonocatalytic reaction mechanism caused by OSD Z-scheme SnO 2 \CdSe/Bi 2 O 3 is presented.
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
ACS Applied Energy Materials
·
2025
·
IF 5.5
Xiaojuan Xu,Xinyu Zhang,Zixiang Zhang,Zerui Wang,Chunyan Yang
Antimony sulfide (Sb2S3) is widely considered as an emerging photovoltaic absorber material due to its low cost, environmental friendliness, intrinsic stability, and abundance. In Sb2S3 photovoltaic devices, the electron transport layer (ETL) is indispensable for facilitating the efficient collection and transporting photogenerated electrons from the absorber layer to the electrode. Among various ETL materials, n-type CdS has been widely applied due to its excellent electron mobility. However, its inherent toxicity, high resistivity, and parasitic light absorption severely limit the performance of Sb2S3 photovoltaic devices. In recent years, indium sulfide (In2S3) has gained significant interest as an alternative ETL due to its robust chemical durability, low toxicity, excellent electron transport capability, and wide bandgap, which effectively blocks hole injection. Nonetheless, the In2S3 ETL alone suffers from severe interfacial recombination due to its interfacial defects and bad energy level matching with a transparent conductive glass electrode. In this work, first, we successfully synthesized In2S3 thin films via a facile, cost-effective, and environmentally friendly approach involving thermal decomposition of indium ethylxanthate (In(S2COEt)3) at 300 °C. Subsequently, the bilayer ETL (SnO2/In2S3) comprising SnO2 and In2S3 was incorporated into Sb2S3 solar cells to optimize interfacial properties and enhanced charge transport. The resulting device achieved the power conversion efficiency (PCE) of 3.91%, conspicuously higher than the 1.22% obtained with the single In2S3 ETL. The dual ETL creates a favorable energy level gradient, while the SnO2 interlayer facilitates the emergence of compact Sb2S3 films with improved crystallinity. This configuration mitigates charge recombination and facilitates electron extraction at the FTO/ETL interface, thereby boosting device performance. This work presents a strategy for constructing the dual ETL by thermally decomposing In(S2COEt)3 on SnO2, offering a cadmium-free, efficient, and environmentally friendly pathway to support the development of Sb2S3 photovoltaic devices.
研究领域:
光伏技术
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材料科学
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纳米技术
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半导体器件
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薄膜技术
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Hui Liu,Shuzhong Wang,Wenjin Zhang,Yinan Zhang,Rui Bao,Lijie Wang,Yanhui Li,Jianqiao Yang,Zefeng Jing
The SnO2 anode has a significant volume expansion and low conductivity for lithium-ion batteries (LIBs), which seriously hinder its commercial application in LIBs. Therefore, it is necessary to innovate the design and preparation methods and synthesize high-performance SnO2-based nanocomposite anode materials. For this purpose, we report the preparation of SnO2/Sn and nitrogen-doped carbon (SnO2/Sn@N-C) composite materials for LIB electrodes via supercritical hydrothermal synthesis and the hydrothermal method. The composite anode material was characterized by transmission electron microscopy, and ultrafine SnO2 and Sn nanoparticles were found to be uniformly distributed on the carbon matrix. Compared with original SnO2, the addition of nitrogen-doped carbon improved the overall performance of the electrode. Therefore, the synthesized SnO2/Sn@N-C composite materials have good cycling performance, and the reversible capacity was 523.7 mAh g–1 after 50 cycles at 0.1C and 416.8 mAh g–1 after 400 cycles at 1C.
研究领域:
材料科学
·
纳米技术
·
电化学
·
储能
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Xue-Yan Wu,Li-Yuan Zhu,Jie Sun,Kai-Yue Zhu,Xiao-Yong Miao,Meng-Yang Liu,Xue-Feng Zhao,Hong-Liang Lu
Pt nanoparticle (NP)-modified SnO2–ZnO (SnO2–ZnO–Pt) core–shell nanosheets (NSs) for hydrogen sulfide (H2S) gas sensing were successfully synthesized via atomic layer deposition, hydrothermal method, and magnetron sputtering. More importantly, the SnO2–ZnO–Pt NS sensing materials were synthesized in situ on microelectromechanical system (MEMS) devices, which are expected to be high-performance gas sensors with superior sensitivity, great selectivity, good reproducibility, and low power consumption. To be specific, the SnO2–ZnO–Pt NSs displayed a high sensitivity (Ra/Rg) of 30.43 and an excellent selectivity when detecting 5 ppm H2S at an operating temperature of 375 °C. Their rate of resistance change was 29.43, which was about 24 and 9 times those of the pristine SnO2 NS (∼1.25) and SnO2–ZnO core–shell NS (∼3.43) sensors, respectively. These substantially improved sensing properties could be mainly attributed to the formation of heterojunctions, catalytic sensitization effect, and increased specific surface area of Pt NP modification. Thus, the proposed SnO2–ZnO–Pt NS gas sensors demonstrate great potential as a high-performance sensing material for application in H2S gas sensors.
研究领域:
材料科学
·
纳米技术
·
气体传感
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微机电系统
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Guoxing Liu,Huai Liu,Junhua Zhang,Rui Zhang,Heng Zhang,Yong Sun,Lincai Peng
Catalytic conversion of concentrated carbohydrates and raw biomass into 5-hydroxymethylfurfural (HMF), an important and value-added platform chemical, is highly desirable for industrial applications but challenging. In this work, the tin pyrophosphate-oxide (SnP2O7–SnO2) catalyst has been designed to efficiently produce HMF from various concentrated carbohydrates and raw biomass. Especially, a high HMF yield of 67.8% was implemented over the SPC4 catalyst from concentrated glucose (36 wt %) in a biphasic solvent system of water and methyl isobutyl ketone. Moreover, the SPC4 catalyst disclosed a wide range of universality for converting various concentrated carbohydrates and raw biomass to HMF with satisfactory yields (45.9–79.5%). To the best of our knowledge, this is the first example of accomplishing appreciable HMF yields from carbohydrates and raw biomass at such a high substrate concentration. It has been demonstrated that the superior catalytic performance of the catalyst should originate from its balanced Lewis and Brønsted acidity and superhydrophilicity property. This work invents a highly promising heterogeneous catalyst for efficiently valorizing renewable lignocellulose-related compounds into versatile furans.
研究领域:
化学工程
·
催化
·
可再生能源
·
生物质转化
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Yun Tian,Zhengyu Wei,Fan Li,Songjie Li,Lixiang Shao,Mengyuan He,Panfei Sun,Yuanyuan Li
Lithium-Sulfur (Li-S) batteries are very competitive in energy storage equipment due to their high theoretical capacity and low cost of raw materials. However, the serious polysulfide "shuttle effect", volume expansion effect and slow conversion reaction kinetics of Li−S batteries during the charge/discharge cycle process still need to be resolved urgently. Herein, we prepared a novel sulfur host of SnO 2 -decorated MoS 2 hollow microspheres (SnO 2 -MoS 2 HMSs). The unique hollow structure provides enough space to accommodate a large amount of sulfur and effectively adapts to its large volume expansion during charge and discharge process. On the other hand, the SnO 2 nanoparticles that attached to the surface of the MoS 2 nanosheets will accelerate the catalysis of MoS 2 and enhance the bonding strength with the polysulfide intermediates through the S−Sn−O chemical bond, which further inhibits the shuttle effect. The newly synthesized SnO 2 -MoS 2 HMSs cathode has achieved excellent electrochemical performance. The initial discharge specific capacity of 1326.4 mAh g −1 was obtained at 0.2 C, and after 100 cycles, the specific capacity of the SnO 2 -MoS 2 HMSs/S cathode only decreased slightly to 1183.8 mAh g −1 , its capacity retention rate reaching as high as 89.2%. We expect the newly synthesized hollow structured MoS 2 with SnO 2 decoration provides a new strategy for the construction of Li-S battery cathode materials.
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2014
·
IF 5.9
Wenhe Xie,Suyuan Li,Suiyan Wang,Song Xue,Zhengjiao Liu,Xinyu Jiang,Deyan He
N-doped amorphous carbon coated Fe3O4/SnO2 coaxial nanofibers were prepared via a facile approach. The core composite nanofibers were first made by electrospinning technology, then the shells were conformally coated using the chemical bath deposition and subsequent carbonization with polydopamine as a carbon source. When applied as a binder-free self-supported anode for lithium ion batteries, the coaxial nanofibers displayed an enhanced electrochemical storage capacity and excellent rate performance. The morphology of the interwoven nanofibers was maintained even after the rate cycle test. The superior electrochemical performance originates in the structural stability of the N-doped amorphous carbon shells formed by carbonizing polydopamine.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Chenhao Cao,Tianci Yan,Jingtian Tong,Junfei Duan,Piao Liu,Chenqian Bie,Guang Zeng,Zhaoyong Chen
Tin-based anode materials have emerged as a promising candidate for lithium-ion batteries due to its inexpensive cost and high theoretical specific capacity, whereas its potential application is limited by severe capacity attenuation and inferior cycling stability due to the huge volume fluctuation during lithiation/delithiation. Herein, SnO 2 /Cu@Carbon composite was fabricated to overcome this problem through a facile co-precipitation approach followed by carbon coating. In the as-prepared composite, SnO 2 and Cu particles are uniformly embedded in N -doped carbon network matrix. Such unique sandwich-like product can greatly alleviate the large volume expansion and SnO 2 aggregation that is conducive to the electron/ion migration, and significantly improve cycling permanence. Therefore, the optimized sample shows impressive long-term stability even at high current density of 1.0 A g −1 (348 mAh g −1 after 1000 loops without obvious capacity decay). Moreover, a comprehensive dynamic analysis of the lithium storage was performed, implying that the increased Li + diffusion coefficient and pseudocapacitive contribution after cycling may account for the improved electrochemical performances.
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ENERGY
·
2023
·
IF 11.2
Ali Reza Kamali,Siyuan Li
Polyethylene terephthalate (PET) is one of the most widely used plastic materials, and therefore, its clean, efficient and low-cost valorization into high-value materials is of substantial economic and environmental interest. Here, for the first time, the utilization of molten salts for the facile, scalable and fast depolymerization of PET into terephthalic acid (C 8 H 6 O 4 ) is reported. It is asserted that the simple heat-treatment of PET in molten KCl-LiCl containing SnCl 2 in air leads to the green preparation of nanocrystalline terephthalic acid embedded with SnO 2 nanocrystals, with an excellent performance as the anode of lithium ion batteries (LIBs). The structural, morphological, thermal, surface, electrical and electrochemical characteristics of plastic-derived nanocomposites are evaluated by various techniques. The sample prepared at 500 °C (PDN-500) contains 28.3 wt% SnO 2 , and exhibits an enhanced bulk electrical conductivity of 447.3 S m −1 , and an excellent Li-ion storage capacity of 498 mAh g -1 after 500 cycles, corresponding to 1657 mAh per gram of SnO 2 . This performance is accompanied by an enhanced lithium ions diffusion coefficient of 8.51 × 10 −10 cm 2 s −1 recorded after 300 cycles, and a capacitive storage contribution of above 42 %. The sustainability of the presented molten salt approach is discussed from two complementary points of view, in terms of the clean conversion of waste plastics into high-performance anode materials for LIBs, as well as the facile and scalable depolymerization of PET, reducing the waste plastics in our environment. This article proposes an efficient and green strategy for the valorization of waste plastics into nanostructured SnO 2 @terephthalic acid for energy storage applications .
研究领域:
材料科学
·
能源存储
·
环境科学
·
化学工程
✓ 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）