JOURNAL OF ELECTRONIC MATERIALS
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2023
·Vol. 52
·期 9
·5964-5974
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IF 2.1
Zhou Xuebin,Ying Zhihua,He Xingxin,Zhang Chenhan,Zheng Xiaolong,Zheng Peng
Cellulose nanofiber (CNF), a natural polymer material with a high specific surface area, is a potential candidate for gas sensors. Here, we report Au/SnO 2 composites with excellent performance synthesized by a chemical precipitation method based on CNF-assisted synthesis, and a series of Au/SnO 2 composites were prepared by adjusting the Au content. The sensitivity of the 1.5 wt.% Au/SnO 2 sensor to a low concentration of 1 ppm NO 2 was 53, nearly 17 times higher than that of pure SnO 2 synthesized by CNF, under ultraviolet (UV) irradiation at a wavelength of 365 nm. The crystal structure of the composite was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), revealing that the composites had high crystallinity and particles reaching the nanoscale. Further experimental data showed that the CNF-assisted synthesis Au/SnO 2 sensors had good selectivity, repeatability, and stability. Additionally, the sensor is able to maintain its excellent gas sensing performance even under varying humidity conditions.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
BIOELECTROCHEMISTRY
·
2023
·
IF 5
Qing Huang,RuiQin Gu,Yunong Zhao,Huibing Fu,Huan Liu
Electrochemical sensors that incorporate immunoassay principles have the ability to monitor dynamic processes of antigen–antibody interactions in real time. In this study, a gold electrode was modified with tin dioxide colloidal quantum wire (SnO 2 QWs) and then coated with the leucine/arginine subtype microcystin (MC-LR) antibody. The active site of SnO 2 QWs that was not bound by MC-LR antibody was then passivated with bovine serum protein (BSA). When the MC-LR antigen binds specifically to the antibodies on the electrode's surface, it triggers electrochemical reactions and generates electrical signals at specific voltage conditions. The SnO 2 QW exhibits excellent electron transport ability, and its ability to form a loose and porous microstructure on the gold electrode surface, which is conducive to the receptor function of the biosensor. The results show a high affinity between the MC-LR antigen and antibody, ranging from 1 pg/mL to 10 ng/mL of MC-LR antigen concentration. The kinetic characteristics of the immune reaction between MC-LR antigen and antibody were elucidated, obtaining a binding constant of 1.399 × 10 11 M −1 and a dissociation constant of 7.147 pM, demonstrating the potential of electrochemical biosensing technology in biomolecular interactions.
研究领域:
分析化学
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生物传感器
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环境科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Dong Wang,Hongyu Zhang,Ping Yang,Xiao Zhang
A novel approach is developed to construct Z -scheme heterojunctions via growing SnO 2 nanoparticles on Pt decorated hollow TiO 2 bowl nanoarrays (TBN) towards efficient photogenerated charge carrier separation and transfer to enhance the redox ability of resulting catalysts. Namely, sample TBN was fabricated using hollow carbon spheres as templates, in which highly crystalline TiO 2 nanoparticles (less than 10 nm) were assembled into nanoarray to construct hollow bowl spheres. Homogeneously distributed small Pt nanoparticles in TBN govern the growth of SnO 2 nanoparticles via a solvent thermal route and finally to create Z -scheme TiO 2 /Pt/SnO 2 heterojunctions. Pt loading between SnO 2 and TBN components improved photogenerated charge carrier separation and transfer efficiencies and enhanced photocatalytic performance. TiO 2 /Pt/SnO 2 heterostructure samples exhibited improved performance for tetracycline hydrochloride removal with a pseudo-first-order kinetic reaction constant of k = 0.080 min −1 which were 3.8 and 6.7 times of those of TBN (k = 0.012 min −1 ) and TBN/SnO 2 composites (sample TS, k = 0.021 min −1 ), respectively. Moreover, the photocatalytic hydrogen generation rate of TiO 2 /Pt/SnO 2 heterostructures without using co-catalyst was 3511.9 μmol·g −1 ·h −1 which was 2.3 times of that of sample TS using Pt as co-catalyst. These results provided new sights for synthesis of photocatalysts especially for the removal of antibiotic pollutants.
研究领域:
环境科学
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材料科学
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光催化
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·Vol. 12
·期 2
·112109
·
IF 7.4
Nguyen Tien Hoang
In this study, a novel Ti/TiO 2 Blue/SnO 2 -Sb@Ni-La (denoted as SnO 2 -Sb@Ni-La(H)) was successfully prepared by hydrothermal method . The fabricated SnO 2 -Sb@Ni-La(H) electrode exhibited the superior electrocatalytic properties: high oxygen evolution potential (2.34 V vs. SCE), low charge transfer resistance (73.4 Ω cm −2 ), and highest degradation efficiency of benzoic acid (BA) ( k BA = 0.112 min −1 ), compared with other electrodes. The degradation rate of BA on the SnO 2 -Sb@Ni-La(H) was 3.6-fold, 4.7-fold, and 7-fold higher than that of SnO 2 -Sb@Ni-La(T), Ti/TiO 2 Blue, and Ti/SnO 2 -Sb, respectively. The study showed that •OH was the main radical contributing to pollutants degradation and the first-order degradation rate of organic pollutants in electrochemical oxidation (EO) process depends on their reactivity towards •OH ( k •OH,OP ), except for the case of methyl orange (MeO). Among the proposed combination methods, the combination of adsorption and electrochemical oxidation (rGO + EO process) exhibited excellent performance: the first-order degradation rate of P-nitrosodimethylaniline ( k RNO ) in (rGO + EO) process increased by 1.42-fold, compared with the EO process alone. This can be explained by the synergy effect from adsorption of RNO on rGO and the degradation of RNO during the EO process. The hydrothermal deposition combined with thermal decomposition can significantly improve the physical and electrochemical oxidation properties of the Ti/TiO 2 Blue/SnO 2 -Sb@Ni-La electrode: k RNO increased by 3.5-fold, compared with that of 1-time deposition by hydrothermal deposition. In addition, the effect of some operating parameters was investigated, including pH, current density, cathode size and distance of electrodes. This study provided a new method to prepare high-performance Ti/TiO 2 Blue/SnO 2 -Sb@Ni-La electrode and proposed some methods to improve the removal efficiency of the pollutants.
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DOI
高影响因子
ACS ES&T Engineering
·
2023
·
IF 7.1
Min Chen,Chengzhi Hu,Huijuan Liu,Jiuhui Qu
Improving energy utilization efficiency is crucial to broadening the prospects in the field of electrochemical wastewater treatment. The electrochemical flow-through (FT) mode shows the potential prospect of high oxidation efficiency and low energy cost. In this study, based on the SnO2-Sb2O3 macroporous anode, we designed a multi-stage flow-through (MSFT) anode that significantly enhanced the organic removal performance than that of a conventional FT system. Accordingly, we first proposed the current reaction kinetics model that could appropriately describe the removal performance in the MSFT electrochemical oxidation process. The mass transfer impact of MSFT was also suitably evaluated by our model, which indicated that the MSFT could rapidly achieve the same diffusion flux for electrochemical oxidation limitations. The energy consumption per order of magnitude removal (EE/O) was below 0.12 kWh m–3 for low-concentration organics, which sharply decreased with an increase in the flow. For the simulation of low conductivity of water quality (∼439 μS cm–1), we found that the MSFT could obtain the voltage reduction of approximately 25% for saving energy without the extra electrolyte. Finally, we summarized the nominalized electron utilization performance of organic destruction on various electrochemical advanced oxidation anodes. The normalized removal rate of contaminants per current was greatly improved by the MSFT mode and our highly efficient anode. Notably, the MS design can prolong the anode usage lifetime. We anticipate that our work will provide design development for other anodic interfaces in the field of electrochemical wastewater purification applications.
研究领域:
环境科学
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电化学工程
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废水处理技术
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DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 20
·4991
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IF 3.1
Wenjun Lei,Xinxin Zhao,Chao Liang,Huai Wang,Xuehong Li,Mingkun Jiang,Xiaofeng Li,Fengqin He,Yonghui Sun,Gang Lu,Hairui Cai
Developing an OER electrocatalyst that balances high performance with low cost is crucial for widely adopting PEM water electrolyzers. Ru-based catalysts are gaining attention for their cost-effectiveness and high activity, positioning them as promising alternatives to Ir-based catalysts. However, Ru-based catalysts can be prone to oxidation at high potentials, compromising their durability. In this study, we utilize a simple synthesis method to synthesize a SnO2, Nb2O5, and RuO2composite catalyst (SnO2/Nb2O5@RuO2) with multiple interfaces and abundant oxygen vacancies. The large surface area and numerous active sites of the SnO2/Nb2O5@RuO2catalyst lead to outstanding acidic oxygen evolution reaction (OER) performance, achieving current densities of 10, 50, and 200 mA cm−2at ultralow overpotentials of 287, 359, and 534 mV, respectively, significantly surpassing commercial IrO2. Moreover, incorporating Nb2O5into the SnO2/Nb2O5@RuO2alters the electronic structure at the interfaces and generates a high density of oxygen vacancies, markedly enhancing durability. Consequently, the membrane electrode composed of SnO2/Nb2O5@RuO2and commercial Pt/C demonstrated stable operation in the PEM cell for 25 days at an industrial current density of 1 A cm−2. This research presents a convenient approach for developing a highly efficient and durable Ru-based electrocatalyst, underscoring its potential for proton exchange membrane water electrolysis.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Jintao He,Chang Liu,Jianlin Chen,Yu Zou,Wenxia Ye,Ruoxi Yang,Jincheng Huang,Zhuoyin Peng,Jian Chen
Low temperature solution-processed SnO 2 is favorable for electron transport layer (ETL) of flexible perovskite solar cells (PSCs) owing to their process compatibility. Here, we propose a route of condensation reflux-processed SnO 2 ETLs for PSCs using SnCl 2 source. However, the low temperature SnCl 2 -derived SnO 2 ETLs are inherently associated with a high defect state density as well as a large amount of H + and Cl - residual on the surface, which will cause open-circuit voltage ( V OC ) loss of the devices. To tackle this issue, aqueous solutions of KOH, CsOH, and KCl have been employed to regulate the buried interfaces. The effects of different cations (K + and Cs + ) and anions (OH - and Cl - ) on the photovoltaic performance of the devices have been comparatively explored. The buried interface with KOH modification showed the best effect, which not only improved the quality and light absorption of CsPbBr 3 perovskite layer but also markedly reduced the defect state density at the interface. The optimal device with an architecture of FTO/SnO 2 /KOH/CsPbBr 3 /carbon exhibited a champion power conversion efficiency (PCE) of 7.80 %, V OC of 1.46 V, short-circuit current density ( J SC ) of 7.50 mA/cm 2 , and fill factor ( FF ) of 0.71, compared with the pristine counterpart with a PCE of 5.86 %, V OC of 1.40 V, J SC of 6.37 mA/cm 2 , and FF of 0.66, respectively. The strategy of low temperature-processed SnO 2 ETLs by KOH interface modification may also provide an avenue for other-typed flexible PSCs manufacture.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yan Qian,Haibang Zhang,Yan Xiong,Yinzuo Wu,Ziyue Fu,Pingchun Guo,Hedong Jiang,Jiake Li,Yanxiang Wang,Shijin Yu,Hua Zhu
The detection of low concentration hydrogen sulfide (H 2 S) gas is of paramount importance for environmental safety and human health, given its colorless, toxic, and flammable nature. In this study, heterostructure material composed of SnO 2 nanorods modified with NiO nanosheets were synthesized, which significantly improved the detection performance of the sensor for hydrogen sulfide (H 2 S) gas at low temperatures by combining the interaction between oxygen vacancies and built-in electric fields. The formation of heterojunctions was verified using X-ray diffraction (XRD) and transmission electron microscopy (TEM), and the existence of oxygen vacancies was further confirmed through electron paramagnetic resonance (EPR) spectroscopy. The heterojunction sensor, when modified with 3 mol% NiO, exhibited an exceptional response value of 386 towards 10 ppm H 2 S at 125 °C, with a rapid response time of 6 s, surpassing that of the pristine SnO 2 sensor. This superior performance can be attributed to the synergistic effect of oxygen vacancies between SnO 2 and NiO, along with the inherent electric field present in the heterojunction. The study showcases the remarkable selectivity and long-term stability of this sensor in detecting hydrogen sulfide gas, offering innovative insights for the advancement of low-temperature and highly sensitive H 2 S gas sensors.
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
RSC Advances
·
2016
·Vol. 6
·期 53
·48043-48048
·
IF 3.289
Ying Duan,Ye Chen,Qing Wen,Tigang Duan
We have developed a simple and effective way to fabricate Ti/Sb–SnO2 electrodes by electrodeposition from a dimethyl sulfoxide solution. The electrode surface exhibits a distinct cauliflower-like structure with a small grain size. Its electrochemical properties have been evaluated by electrochemical impedance spectroscopy and accelerated service life tests; furthermore, the results were compared with those obtained for an electrode prepared from aqueous solution. The DMSO-prepared electrode has low charge transfer resistance (22.71 vs. 107.60 Ω) and high stability (59.3 vs. 2.8 h). Moreover, its ability to electrochemically decolorize methyl orange and rhodamine B is greatly improved.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
Research
·
2019
·
IF 0
Qiyao Guo,Jihuai Wu,Yuqian Yang,Xuping Liu,Zhang Lan,Jianming Lin,Miaoliang Huang,Yuelin Wei,Jia Dong,Jinbiao Jia,Yunfang Huang
Tin oxide (SnO2), as electron transport material to substitute titanium oxide (TiO2) in perovskite solar cells (PSCs), has aroused wide interests. However, the performance of the PSCs based on SnO2 is still hard to compete with the TiO2-based devices. Herein, a novel strategy is designed to enhance the photovoltaic performance and long-term stability of PSCs by integrating rare-earth ions Ln3+ (Sc3+, Y3+, La3+) with SnO2 nanospheres as mesoporous scaffold. The doping of Ln promotes the formation of dense and large-sized perovskite crystals, which facilitate interfacial contact of electron transport layer/perovskite layer and improve charge transport dynamics. Ln dopant optimizes the energy level of perovskite layer, reduces the charge transport resistance, and mitigates the trap state density. As a result, the optimized mesoporous PSC achieves a champion power conversion efficiency (PCE) of 20.63% without hysteresis, while the undoped PSC obtains an efficiency of 19.01%. The investigation demonstrates that the rare-earth doping is low-cost and effective method to improve the photovoltaic performance of SnO2-based PSCs.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
GREEN CHEMISTRY
·
2024
·Vol. 26
·期 9
·5460-5470
·
IF 9.3
Zezhuan Jiang,Fuling Li,Huaiqing Yan,Rathes Kannan R,Lijia Chen,Ping Li,Qunliang Song
The buried interface between perovskite and the electron transport layer (ETL) played a crucial role in improving the power conversion efficiency (PCE) and stability of n-i-p structured perovskite solar cells (PSCs). Commercially prepared SnO2-based ETL films often suffered from severe interface defects, imperfect energy level alignment, and uncontrollable perovskite nucleation sites, hindering the achievement of highly efficient and stable PSCs. In this study, the hindering factors of commercial SnO2 ETL films were all addressed by the incorporation of a non-toxic multifunctional molecule, natural sodium lignosulfonate (SL) into the SnO2 ETL precursor, and ameliorated perovskite films were obtained. As a result, the PCE of a reference device (19.60%) was improved to 21.12% after doping with SL. Furthermore, unencapsulated SL-doped devices exhibited excellent environmental stability. After 840 h of storage at ∼20% RH, the SL-modified device retained ∼83% of its initial PCE, well exceeding the control device (∼13%). In addition, our findings suggest a novel strategy aimed at improving the efficiency and stability of PSCs by the incorporation of non-toxic multifunctional molecules such as natural SL.
研究领域:
材料科学
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能源技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2025
·
IF 2.5
Liu Xinyu,Li Mingzhao,Shi Chonghua,An ShuQing,Wang Jing,Yao Shaowei
SnO 2 has a high theoretical capacity when used as an anode material for sodium-ion batteries, but has poor electrical conductivity. In this work, to enhance its electrochemical performance, Sn/SnO 2 /C composites were fabricated through a facile approach. Sn/SnO 2 /C composites were obtained by mechanical grinding of SnC 2 O 4 mixed with acetylene black and subsequent heat treatment in an inert atmosphere. In this material, SnO 2 provides higher capacity, while Sn not only provides higher capacity, but also increases the conductivity of the material. Additionally, the added carbon both improves the conductivity of the material and helps to distribute the material uniformly to alleviate the volume expansion of the Sn-based material. Results indicate that Sn/SnO 2 /C-519 exhibits excellent cyclic and rate performance. This paper provides valuable references for designing simple and low-cost anode materials for sodium-ion batteries.
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）