INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Mengmeng Wang,Jinshan Yang,Xiao You,Jingyi Yan,Yusheng Ding,Xiangyu Zhang,Shaoming Dong
Designing highly active and selective electrocatalysts for converting CO 2 into value-added chemicals and fuels by electrochemical method is still a challenge. Herein, we have successfully fabricated a lotus-like morphology of Sn/Cu alloy on carbon fiber cloth via a facile electrodeposition method followed by air-dried treatment. Owing to the presence of Sn 2+ and Cu + on the surface of Sn/Cu alloy, this bimetallic Sn/Cu electrode exhibits the outstanding FE of formate with a maximum value of 95.81% at −1.07 V versus RHE , and the total current density at −0.97 V versus RHE keeping unchanged at 33.78 mA cm −2 under the 20 h electrolysis even with the replacement of electrolyte. This work provides an effective strategy for highly boosting the selective production of formate from electrochemical CO 2 reduction by stabilizing the intermediate valence of bimetallic alloy.
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产品关联
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2023
·Vol. 33
·期 4
·1505-1513
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IF 2.7
Wu Sifei,Fang Linxia,Li Yihan,Wang Hai-Bo,Zhang Hongding
Changes in Sn 2+ and glycine levels are relevant to many important physiological procedures in human health. However, investigation of their physiological functions is limited because few versatile methods towards Sn 2+ and glycine detection have been developed. In this work, a fluorescence turn on–off-on strategy was firstly constructed for rapid and sensitive detection of Sn 2+ and glycine through the specific binding between Sn 2+ and glycine. Carbon nanodots (CDs) with a quantum yield of 19.5% were synthesized by utilizing inner film of waste eggshell as carbon source and employed as fluorescent probe. In the presence of Sn 2+ , the fluorescence of CDs was quenched by Sn 2+ via the primary inner filter effect (IFE). However, the binding between Sn 2+ and glycine prevented the IFE between Sn 2+ and CDs, resulting in fluorescence recovery of CDs. Under optimized conditions, the fluorescent response of CDs displayed good linear relationships with the concentrations of Sn 2+ in the range of 10–200 µM and 200–5000 µM, and the limit of detection (LOD) was 2.4 µM. For glycine detection, a good linear relationship was obtained in the concentration range of 5–1000 µM with a low LOD down to 0.76 µM. Moreover, the practicability of the assay was also demonstrated by measuring glycine content in human serum samples. This work provides an economical, green and fast method for biological analysis of Sn 2+ and glycine.
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DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 9
·51724
·
IF 3.125
Xiaoqing Qiu,Daqian Wang,Qing Li,Xiaoyue Li,Xiaowei Zhao,Zhiwei Li,Xiaohong Li,Zhijun Zhang
Melamine-formaldehyde (MF) foam has wide applications due to good flame retardancy, excellent sound absorption, and high thermal stability. However, the recycling of MF foam wastes remains a challenge due to its thermosetting nature. Here, we demonstrate a new strategy for discarded foams as solid adsorbents for removing tin ions in simulated tin-containing wastewater. Results showed that the removal rate of tin in simulated wastewater is as high as 99.996%. Moreover, after simple calcination, as-obtained products can be used as high-efficiency flame retardants for flexible poly(vinyl chloride) (PVC), reducing the peak of heat release rate and total smoke production of PVC by 51.8% and 45.8%, respectively, under the condition of 2.5 wt.% addition. In short, this strategy successfully converted MF foam and tin wastewater to valuable flame retardants, opening the way for the environmentally friendly recycling of MF waste and the simultaneous treatment of tin-containing wastewater.
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DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2020
·Vol. 646
·期 5
·288-295
·
IF 1.24
Yalan Li,Yuandong Wu,Dajiang Mei,Thomas Doert
Three new tin coordination compounds (4,4'-Hbipy) 2 [Sn 2 (C 2 O 4 ) 3 ] ( 1 ), (4,4'-H 2 bipy)[Sn(C 2 O 4 ) 2 ] ( 2 ), and SnCl 2 (4,4'-bipy) ( 3 ) were synthesized under hydro-(solvo-)thermal conditions and their crystal structures were determined by single-crystal X-ray diffraction. Compound 1 exhibits a ionic structure based on discrete [4,4'-Hbipy] + cations and [Sn 2 (C 2 O 4 ) 3 ] 2– anions. These two units are linked via N–H ··· O hydrogen bonds to form a pseudo-one-dimensional zigzag hydrogen-bonded chain. In compound 2 , four-coordinate Sn atoms form monomeric tin dioxalato complexes, which are connected to the doubly protonated [4,4'-H 2 bipy] 2+ cations through N–H ··· O hydrogen bonded to give a one-dimensional zigzag hydrogen-bonded chain. Compound 3 forms a three-dimensional hydrogen-bonded network, in which 1 ∞ [SnCl 2 (4,4'-bipy)] linear chains are interconnected to each other by C–H ··· Cl hydrogen bonding. The solid-state UV/Vis/NIR diffuse reflectance spectroscopy shows that three compounds are broadband semiconductors. The thermogravimetric analysis evidences the thermal stability of the three compounds up to 175, 201, and 246 °C, respectively.
研究领域:
无机化学
·
材料科学
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 19
·2313833
·
IF 18.5
Andrew Balilonda,Mengyu Du,Ziqi Li,Wenbo Li,Wen Mei,Man Yui Leung,Guan Wu,Xiaoming Tao,Wei Chen
Perovskite based on Sn have attracted extensive attention to address the toxicity challenge associated with Pb-based perovskite solar cells. However, Sn-based perovskite solar cells（SPSCs）are notable for their poor stability and loss of efficiency due to rapid oxidation of Sn 2+ to Sn 4+ in air. To slow down the rapid oxidation, a number of antioxidants are suggested. Nevertheless, the antioxidant normally gets oxidized to non-antioxidizing by-products in a single-stage redox reaction and loses the function of oxidation prevention. Herein, vanillin is introduced, a natural antioxidant with a double-staged redox reaction to inhibit the oxidation of Sn 2+ or reduce Sn 4+ back to Sn 2+ , which improves the efficiency and prolongs the open-air stability of SPSCs. With 7.5% vanillin doping, an outstanding efficiency of 13.18% is achieved. Moreover, exposure of the solar cell to 160 W microwave irradiation for 3 minutes resulted in significant efficiency recovery from 88% to 96.5% at 812 hours and from 35.7% to 65.4% after 2200 hours of aging. This work reveals the potential of natural antioxidation and short microwave irradiation as suitable approaches to elevate the efficiency and lifetime of SPSCs.
研究领域:
光伏学
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材料科学
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可再生能源
·
纳米技术
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DOI
高影响因子
Advanced Energy Materials
·
2024
·Vol. 14
·期 26
·2401114
·
IF 24.4
Qin Li,Junjie Ma,Xuanchen Xu,Peng Gao,Meng Cai,Mengqi Han,Jing Yang,Yiqiang Zhang,Yanlin Song
The improvement of photovoltaic and stability performance of tin (Sn)-based halide perovskite solar cells is impeded by notorious oxidation issues and Anderson localization. Despite previous implements in antioxidation through the incorporation of Lewis base additives, there still exist ongoing uncertainties surrounding its complex interaction mechanisms. A perplexing phenomenon regarding accelerated oxidation in acrylic acid is discovered that deviates from conventional Lewis base–acid reaction. The underlying insights into the deprotonation of acrylic acid followed by the formation of a “tripod” ionic bonding form are provided, which results in amplifying the delocalization effect of electrons of Sn 2+ . Furthermore, with the assistance of acrylamide and acrolein, synergistic enhancement in terms of the antioxidation and suppression of Anderson localization can be achieved — a concept referred to as “Dual Synergistic Engineering”. This suppresses the oxidation of Sn 2+ and reduces Sn 4+ content by ≈76%. Meanwhile, the diffusion length is prolonged significantly from 195.9 to 458.9 nm. The optimized all-inorganic Sn/Pb-based perovskite solar cells exhibit a power conversion efficiency of above 14% with enhanced stability. These findings provide an alternative viewpoint for comprehending the impact of chemical interaction on oxidation and crystal growth in Sn/Pb-based perovskites.
研究领域:
材料科学
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光伏技术
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钙钛矿太阳能电池
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固体物理
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化学键合
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半导体材料
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DOI
高影响因子
危险品化学品经营许可证（带存储）