JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 34
·16129-16140
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IF 3.5
Wang Youwei,Wang Xiushan,Xu Huan,Wu Ang,Chen Ying,Li Guiqiang,Dong Chuanxin,Li Yahui,Mei Chao,Li Shuailin,Zhang Hehu
To address solubility, plasticizer leakage, and ionic carrier issues in PVC-based solid ion-selective electrodes, a novel plasticizer-free photocurable solid Ca 2+ -selective electrode (GC/PANI/CPANI/Ca 2+ (PBA)-ISE) was developed using a novel electrode structure. A new Ca 2+ -sensitive membrane based on poly(butyl acrylate) (PBA) was synthesized by ultraviolet polymerization, with conductive polyaniline (PANI) as the solid contact layer and a copolymer of aniline and 2,5-dimethoxyaniline (CPANI) as the coating. All potential electrochemical tests were carried out on the prepared Ca 2+ -selective electrode. The response slope of the electrode was 28.33 mV decade −1 , the detection limit was 6.9 × 10 −6 M, the stable linear range was 1 × 10 −6 to 1 × 10 −2 M, and it had a good Nernst response. The chronopotentiometric analysis and water layer tests showed that the potential drift of GC/PANI/CPANI/Ca 2+ (PBA)-ISE was as low as 0.0125 mV s −1 and 1.247 mV h −1 . In addition, the interference tests of environmental factors were carried out. When the electrode was in different interference light and gas environments, the potential changes of 1.6 × 10 −4 mV s −1 and 1.2 × 10 −3 mV s −1 were observed. Compared with previous reports and commercial electrodes, the prepared GC/PANI/CPANI/Ca 2+ (PBA)-ISE showed good electrochemical performance, and the recovery rate in Ca 2+ test solutions was higher (97.2–99.9%). This study provided theoretical insights to address solubility, plasticizer leakage, and ion carrier leakage issues in solid-state contact ion-selective electrodes. At the same time, this study provided a new structure and preparation method for the preparation of all-solid-state Ca 2+ -selective electrode. Graphical abstract
研究领域:
分析化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Micromachines
·
2023
·Vol. 14
·期 4
·855
·
IF 3.4
Weizhuo Gao,Weixuan Jing,Yanrui Du,Zehao Li,Pengcheng Liu,Feng Han,Libo Zhao,Zhaochu Yang,Zhuangde Jiang
With polymerization duration and Au3+concentration of the electrolyte regulated, a desirable nitrate-doped polypyrrole ion-selective membrane (PPy(NO3−)-ISM) and Au solid contact layer of anticipate surface morphology were obtained, and the performance of nitrate all-solid ion-selective electrodes (NS ISEs) was improved. It was found that the roughest PPy(NO3−)-ISM remarkably increases the actual contact surface area of the PPy(NO3−)-ISMs with nitrate solution, which leads to better adsorption of NO3−ions upon the PPy(NO3−)-ISMs, and produces a larger number of electrons. The most hydrophobic Au solid contact layer avoids the formation of the aqueous layer at the interface between the PPy(NO3−)-ISM and Au solid contact layer, and ensures unimpeded transporting of the produced electrons. The PPy-Au-NS ISE for polymerization duration 1800 s and at Au3+concentration 2.5 mM of the electrolyte displays an optimal nitrate potential response, including a Nernstian slope of 54.0 mV/dec, LOD of 1.1 × 10−4M, rapid average response time less than 1.9 s, and long-term stability of more than 5 weeks. This indicates that the PPy-Au-NS ISE is an effective working electrode for the electrochemical determination of NO3−concentration.
研究领域:
分析化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2019
·
IF 5.256
Xianghua Zeng,Wenen Jiang,Xiaohui Jiang,Geoffrey I.N. Waterhouse,Zhiming Zhang,Liangmin Yu
A novel Pb 2+ ion selective electrode based on a polyaniline-doped titanium dioxide (PANI-TiO 2 ) solid contact, denoted herein as GC/PANI-TiO 2 /Pb 2+ -ISE, was successfully developed. The GC/PANI-TiO 2 /Pb 2+ -ISE exhibited a stable and rapid potential response to Pb 2+ ions, with a linear response over the concentration range 10 −3 -10 −9 M, a detection limit of ∼10 −9.1 M and a response time of only 10–15 s. The PANI-TiO 2 solid contact layer possessed a large specific capacitance , thereby effectively promoting ion-to-electron transduction and enhancing the output stability (potential drift, 122.6 μV/s). The developed electrode maintained excellent performance during continuous use, showing a linear response range of 10 −3 -10 −7 M with no obvious changes in the potential response time or response slope (29 ± 0.2 mV/decade) over six weeks. Results encourage the wider use of conducting polymer-semiconductor solid contacts in ion selective electrode development.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2017
·
IF 4.784
Shoushuai Gao,Yi Zhang,Jianping Ao,Shuping Lin,Zhaojing Zhang,Xiuling Li,Dongxiao Wang,Zhiqiang Zhou,Guozhong Sun,Fangfang Liu,Yun Sun
The direction of Se-Mo-Se sheets to the Mo film is crucial for the thickness of Mo(S,Se) 2 and the electrical conductivity , so as the back contact of Cu 2 ZnSn(S,Se) 4 solar cells. In this study, the preferred orientation of Mo(S,Se) 2 film changes from (100) peak to (103) peak, i.e. from perpendicular to the substrate to tilted to the substrate for Se-Mo-Se sheets as the roughness decrease of Mo back contact layer. The Se vapor can easily diffuse through the channels between Se-Mo-Se sheets when the formed Mo(S,Se) 2 layer is (100) peak preferred with Se-Mo-Se sheets perpendicular to the substrate, and thus excessively thick Mo(S,Se) 2 will be formed. Whereas, the Se-Mo-Se sheets are tilted to substrate when the preferred orientation of Mo(S,Se) 2 is (103) peak. The tilted Se-Mo-Se sheets can act as a natural Se diffusion barrier to suppress the Se vapor diffusion through the already formed Mo(S,Se) 2 layer to further selenize the remaining Mo film, and also can provide a good electrical conductivity. As a result, the thickness of Mo(S,Se) 2 sharply decreased from 1500 nm to 200 nm with the surface morphology change of Mo back contact, which resulting in the decrease of series resistance of Cu 2 ZnSn(S,Se) 4 solar cells from 2.94 Ω cm 2 to 0.49 Ω cm 2 , and the increase of conversion efficiency of Cu 2 ZnSn(S,Se) 4 solar cells from 6.98% to 9.04%.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
European Physical Journal Plus
·
2022
·Vol. 137
·期 11
·1-10
·
IF 3.758
Zhang Zhen,Fu Lijuan,Yao Shun,Cheng Jiang,Li Lu,Tang Hua
Back surface recombination could have some adverse effects on superstrate antimony selenide (Sb 2 Se 3 ) solar cells. Anode interface modification, such as inserting a buffer layer with appropriate energy-level matching, is necessary. Here, a novel interfacial material, pyrolytic ammonium metatungstate (PAMT), prepared by spray pyrolysis deposition, was introduced to modify the back contract of antimony selenide solar cells. Morpho-structural and thermal analysis showed that this material is different from crystalline molybdenum oxide powder. Monology characterization showed that PAMT preferentially fills the space of the Sb 2 Se 3 grain boundary. The J–V test showed that this layer improved the interfacial contract between the absorber and the back electrode. The PAMT layer showed suitable energy matching with Sb 2 Se 3 , providing an effective channel for hole carriers transport from the absorber to the anode, and largely reducing back contact surface recombination. As a result, the PAMT-modified Sb 2 Se 3 device exhibited a much higher photovoltaic performance, significantly improving the efficiency from 5.27% to 6.11%. Graphical Abstract
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
PLoS One
·
2020
·Vol. 15
·期 10
·e0240173
·
IF 2.74
Lei Zhang,Zhengying Wei,Pengcheng Liu
To improve the single-layer all-solid-state ion selective electrode’ defects including poor conductivity of PVC sensitive membrane and interference of water layer between substrate electrode and sensitive membrane, a double-layer all-solid-state ion selective electrode with nanomaterial as the solid contact layer and conductive polymer as the ion sensitive membrane was developed. A gold nanoparticles solid contact layer and a nitrate-doped polypyrrole molecularly imprinted polymer membrane were prepared by electrodeposition. The optimal parameters obtained by electrochemical performance test were 2.5 mmol/L HAuCl 4 electrolyte for solid contact layer and 1800s electrodeposition time for sensitive membrane. The new electrode exhibited a Nernstian response of -50.4 mV/decade and a low detection limit of 5.25×10 -5 mol/L. Potentiometric water layer test showed no water film formed between the gold nanoparticles solid contact layer and nitrate-doped polypyrrole molecularly imprinted polymer membrane. The contact angle between droplet and the surface of solid contact layer was 112.35° and showed good hydrophobic property. Furthermore, the developed electrode exhibited fast response, excellent potential stability and long lifetime. This electrode is suitable for the detection of nitrate concentration in water and liquid fertilizer.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 20
·2214771
·
IF 19
Jun Pei,Jian-Lei Shi,Hezhang Li,Yilin Jiang,Jinfeng Dong,Hua-Lu Zhuang,Bowen Cai,Bin Su,Jincheng Yu,Wei Zhou,Bo-Ping Zhang,Jing-Feng Li
GeTe and (Bi,Sb) 2 Te 3 are two representative thermoelectric (TE) materials showing maximum performance at middle and low temperature, respectively. In order to achieve higher performance over the whole temperature range, their segmented one-leg TE modules are designed and fabricated by one-step spark plasma sintering (SPS). To search for contact and connect layers, the diffusion behavior of Fe, Ni, Cu, and Ti metal layers in GeTe is studied systematically. The results show that Ti with a similar linear expansivity (10.80 × 10 −6 K −1 ) to GeTe, has low contact resistance (3 µΩ cm 2 ) and thin diffusion layer (0.4 µm), and thus is an effective metallization layer for GeTe. The geometric structure of the GeTe/(Bi,Sb) 2 Te 3 segmented one-leg TE module and the ratio of GeTe to (Bi,Sb) 2 Te 3 are determined by finite element simulation method. When the GeTe height ratio is 0.66, its theoretical maximum conversion efficiency (η max ) can reach 15.9% without considering the thermal radiation and thermal/electrical contact resistance. The fabricated GeTe/(Bi,Sb) 2 Te 3 segmented one-leg TE module showed a η max up to 9.5% with a power density ≈ 7.45 mW mm −2 , which are relatively high but lower than theoretical predictions, indicating that developing segmented TE modules is an effective approach to enhance TE conversion efficiency.
研究领域:
材料科学
·
热电学
·
能量转换
·
固体物理
✓ 已验证
DOI
高影响因子
IONICS
·
2024
·
IF 2.4
Thuy Nguyen Thi Dieu,Han Yu,Wang Xiaochan,Zhao Guo
Potentiometric NH 4 + sensors were developed by modification of ion-selective electrodes with different metal oxide nanomaterials forming solid-contact layers, including titania (TiO 2 ), manganese dioxide (MnO 2 ), and stannic oxide (SnO 2 ). A potentiometric method was used to determine the basic analytical parameters of the sensors. Furthermore, electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and water layer tests were used to evaluate the electrochemical features of the electrodes. The results for the modified metal oxides and unmodified electrodes were compared, and the effectiveness of each material as a solid-contact layer on the electrode was evaluated. The best results were found for an electrode with a solid-contact layer of SnO 2 nanomaterial (GCE/SnO 2 /NH 4 + -ISM). The GCE/SnO 2 /NH 4 + -ISM electrode displayed a selective and fast response to NH 4 + ions (4.8 s) during the potential measurements. In this case, a slope of 47.17 mV/decade ( R = 0.99), a linearity range of 1 × 10 −7 –1 × 10 −2 M, and a limit of detection of 1.18 × 10 −8 M were obtained. This electrode exhibited good reproducibility, a high potential response, and stability, making it an attractive alternative for the development of effective SC-ISEs to detect NH 4 + in aquaponic nutrient solutions.
研究领域:
电化学
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环境科学
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农业工程
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纳米技术
·
分析化学
✓ 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）