CRYSTENGCOMM
·
2013
·Vol. 15
·期 33
·6443-6447
·
IF 3.879
Manjiao Deng,Shuling Shen,Xuewen Wang,Yejun Zhang,Huarui Xu,Ting Zhang,Qiangbin Wang
High quality AgInS2 nanocrystals (NCs) are synthesized using a simple single-source precursor method, in which the size and morphology of the products can be precisely controlled from heliotrope seed-like NCs of 6 × 12 nm to heliotrope seed-like dimer NCs of 8 × 16 nm by tuning the composition of the coordinating solvents of oleic acid and 1-dodecanethiol. The results show that 1-dodecanethiol plays a dominant role in determining the morphology of AgInS2 NCs due to its strong absorption onto the {001} crystal plane of AgInS2 NCs. The photoelectric properties of the as-prepared AgInS2 NCs have been characterized using AgInS2-poly(3-hexylthiophene) hybrid nanodevices. The results illustrate that the AgInS2 NCs present very high photosensitivity and photostability to outside illumination. The high sensitivity and stability of the hybrid nanodevice indicate a broad spectrum of applications in the photoelectric nanodevices.
研究领域:
材料科学
·
纳米技术
·
光电子学
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Fengjiao Yang,Bingyu Yang,Xinyue Gu,Minghua Li,Kezhen Qi,Ya Yan
Water-soluble AgInS 2 (AIS) quantum dots (QDs) were successfully prepared through the one-pot water phase method with thioglycolic acid (TGA) as the stabilizing agent. Because enrofloxacin (ENR) effectively quenches the fluorescence of AIS QDs, a highly-sensitive fluorescence detection method is proposed to detect ENR residues in milk. Under optimal detection conditions, there was a good linear relationship between the relative fluorescence quenching amount (Δ F / F 0 ) of AgInS 2 with ENR and ENR concentration ( C ). The detection range was 0.3125–20.00 μg/mL, r = 0.9964, and the detection limit (LOD) was 0.024 μg/mL (n = 11). The average recovery of ENR in milk ranged from 95.43 to 114.28%. The method established in this study has advantages including a high sensitivity, a low detection limit, simple operation and a low cost. The fluorescence quenching mechanism of AIS QDs with ENR was discussed and the dynamic quenching mechanism of light-induced electron transfer was proposed.
研究领域:
食品科学
·
分析化学
·
生物医学
✓ 已验证
DOI
PubMed
高影响因子
MATERIALS LETTERS
·
2014
·
IF 2.269
Zhi Zeng,Aiqi Wang,Lulu Ping,Jinglian Yang,Qianming Wang
Novel nanoparticles of AgInS 2 doped with trivalent lanthanide ions were synthesized by a one-pot reaction at low temperature. Well-defined microstructures were achieved and very uniform nanocrystals with regular shapes were found in lanthanide incorporated AgInS 2 . These nanoparticles exhibited red emissions under ultraviolet excitation. The resultant luminescence intensities could be tuned by controlling the diffusion of different lanthanides. This design strategy and remarkable features of morphology or photoluminescence will expand their application in optical fields.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2021
·Vol. 54
·期 37
·375101
·
IF 3.207
Min Yang,Yujia Yan,Enzhou Liu,Jun Fan,Xiaoyun Hu
As a typical sulfide bimetallic semiconductor material, AgInS2 has been widely studied for its excellent photoelectrochemical properties. However, due to the large lattice mismatch, it is difficult to obtain AgInS2 single phase nanocrystals by conventional reaction. Therefore, the ligand and pH were selected and adjusted for the preparation of AgInS2 single phase nanocrystals. Adding organic molecules containing sulfhydryl groups as ligands could combine with metal ions to form covalent bonds, while OH− could react with transition metal ions to form soluble metal hydroxides, which could protect metal ions from direct reaction with S2−. With the help of x-ray powder diffraction, AgInS2 single phase nanocrystals were successfully prepared by hydrothermal reaction at 180 °C with L-cysteine (L-Cys) or glutathione as the ligand in an alkaline environment. Finally, it was determined that the AgInS2 single phase nanocrystals obtained when the ligand was L-Cys and the reaction time was locked to 24 h had high catalytic activity as determined by a rhodamine B (RhB) removal experiment. In addition, AgInS2/TiO2 (AIS-TO) heterojunction photocatalysts were prepared by an in-situ hydrothermal method to improve the photocatalytic activity of TiO2. Among them, the 5% AIS-TO sample showed the highest catalytic activity, and the degradation rate of RhB was 2.4 times that of TiO2. It was also proved that electrons were transported by a Z-type mechanism in the AIS-TO heterojunction photocatalytic system. This work would provide a feasible scheme for the preparation of more sulfide bimetallic semiconductor single phase nanocrystals.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Xinyue Gu,Chen Tan,Lixian He,Jie Guo,Xia Zhao,Kezhen Qi,Ya Yan
In this work, AgInS 2 and Mn 2+ doped AgInS 2 (Mn–AgInS 2 ) with different Mn 2+ : (Ag + + In 3+ ) ratios were synthesized via a low temperature liquid method. The photocatalytic activity of the obtained samples was followed by taking formaldehyde as the target pollutant under visible light irradiation. The photocatalysts were passed through various characterization procedures to investigate their morphological, structural and photophysical characteristics. The optimal proportion sample [with the ratio n (Mn 2+ ): n (Ag + + In 3+ ) = 1:100] photodegraded about 79% formaldehyde in 150 min. These upgraded activities are attributed to the enhanced visible light absorption and superior charge separation due to the presence of Mn 2+ as confirmed site from charge separation measurements. In addition, a possible mechanism for the photodegradation of formaldehyde is proposed based on the experimental results. Furthermore, the photocatalytic water splitting performance of Mn–AgInS 2 and multi-walled carbon nanotubes (MWCNTs) modified Mn–AgInS 2 is investigated and compared under simulated sunlight irradiation, and remarkable hydrogen production is achieved (105 μmol h −1 g −1 ) by using the latter.
研究领域:
材料科学
·
环境科学
·
光催化领域
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Fengjiao Yang,Bingyu Yang,Lixian He,Kezhen Qi,Alireza Khataee,Ya Yan
Metronidazole (MNZ) is a type of nitroimidazole antibiotic widely used in livestock feed. The extensive use, overuse, and misuse of MNZ have resulted in high levels of MNZ residues in animal products, posing serious health risks to people. Based on the effective fluorescence quenching capability of MNZ, a highly precise technique characterized by low-cost materials, low detection limit, and simple operational procedure was established to detect MNZ in eggs by modulating the fluorescence produced by AgInS 2 quantum dots (AIS QDs). The performance of the prepared sample was outstanding as the linear range was 0.25–80.00 μg/mL with a detection limit (LOD) of 0.166 μg/mL and R 2 = 0.9996, having an average recovery of MNZ in egg white ranged from 94.88 % to 102.39 %. This detection method has the advantages of a wide detection range, high sensitivity, high accuracy, excellent selectivity , and simple operability, and it can be used to detect MNZ in eggs after further study. The fluorescence quenching mechanism of AIS QDs by MNZ is speculated as a dynamic quenching mechanism of light-induced electron transfer .
研究领域:
分析化学
·
食品安全
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2013
·Vol. 1
·期 33
·4160-4165
·
IF 0
Wei-Wei Xiong,Guo-Hai Yang,Xing-Cai Wu,Jun-Jie Zhu
Low-toxicity, highly luminescent, and water-soluble AgInS2/ZnS nanocrystals (NCs) have been synthesized via a microwave-assisted approach. The structure and optical features of the AgInS2/ZnS NCs were characterized by X-ray diffraction, high resolution transmission electron microscopy, Fourier transform infrared spectroscopy, ultraviolet visible absorption spectroscopy and photoluminescence (PL) spectroscopy. The as-synthesized AgInS2/ZnS NCs exhibited high PL quantum yields (40%) and long PL lifetimes (424.5 ns). Furthermore, the dynamic changes of the intracellular copper(II) levels in HeLa cells were monitored using the AgInS2/ZnS NCs as fluorescent probes. The results showed that the AgInS2/ZnS NCs as promising fluorescent probes can be used in the detection of intracellular copper ions in living cells.
研究领域:
纳米生物学
·
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Danlu Su,Le Wang,Min Li,Shiliang Mei,Xian Wei,Hanqing Dai,Zhe Hu,Fengxian Xie,Ruiqian Guo
Ternary Ⅰ-Ⅲ-Ⅵ quantum dots (QDs) have become promising color-conversion materials for warm white light-emitting diodes (WLEDs) because of their broad emission, large stokes shift, high luminescence and low-toxicity. In this work, AgInS 2 /ZnS (AIS/ZnS) core/shell QDs were synthesized via a facile microwave-assisted aqueous method. The PL emission can be tuned from 540 to 622 nm by varying the Ag/In ratio and the maximum quantum yield can reach 58.27%. Flexible luminescent films were obtained by embedding AIS/ZnS QDs in polyacrylamide hydrogel, which were combined with blue InGaN chips to fabricate remote-type warm WLEDs. The as-prepared LEDs exhibit a relatively high color rendering index (CRI) of 87.5 and a correlated color temperature (CCT) of 3669 K, indicating that water-soluble AIS/ZnS QDs are competitive color-conversion materials for warm WLEDs.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
VACUUM
·
2021
·
IF 3.627
Tong Xue,Yiyi Shi,Jie Guo,Meixian Guo,Ya Yan
Water soluble AgInS 2 quantum dots (AIS QDs) were successfully prepared by an environmentally friendly one-pot water phase method using glutathione (GSH) as the stabilizing agent. The crystal structure, morphology, size, chemical states, and optical properties of as-prepared AIS QDs were characterized through X-ray diffraction (XRD), Scanning transmission electron microscopy (STEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrometer (FTIR), Ultraviolet–visible spectrophotometer (UV–vis) and Photoluminescence spectrometer (PL). Factors affecting the fluorescence intensity of AIS QDs including reaction solution pH value, fluorescence test temperature and concentration of AIS QDs were investigated. The fluorescence stability of AIS QDs and the selectivity of AIS QDs toward Pb 2+ detection was also evaluated. Under optimized test conditions, three excellent linear relationships ( ( F 0 − F ) / F 0 = 27.938 C P b 2 + − 0.002 ( R = 0.998 ) , ( F 0 − F ) / F 0 = 10.362 C P b 2 + − 0.005 ( R = 0.997 ) , ( F 0 − F ) / F 0 = 6.554 C P b 2 + − 0.240 ( R = 0.9993 ) were achieved between the concentration of Pb 2+ and the relative fluorescence quenching amount of AIS QDs in the range of 9–96 nM, 48–434 nM and 193–530 nM, respectively. The detection limit was 4 nM and the recovery was in the range of 92.2%–102.6%. Our method had wide detection range, excellent selectivity, high sensitivity and easy operability, and could be applied for the content determination of Pb 2+ in water. The possible fluorescence quenching mechanism of AIS QDs by Pb 2+ was discussed in detail and the dynamic quenching mechanism of light-induced electron transfer was put forward.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Lijiao Sun,Ying Wang,Lixian He,Jie Guo,Qingwen Deng,Xia Zhao,Ya Yan,Kezhen Qi
In this work, AgInS 2 (AIS) and cobalt (Co) doped AgInS 2 (Co-AIS) are prepared by low-temperature liquid phase method using thioglycolic acid (TGA) as the stabilizing agent. The crystal structure, surface elements, binding energy, particle morphology , and optical properties of AIS and Co-AIS are analyzed by XRD , XPS , SEM, TEM, UV-Vis-DRS, and PL . Rhodamine B (RhB) and 4-nitrophenol (4-NP) are used as the model pollutants for evaluating the photocatalytic activities of AIS and Co-AIS. The optimal doping ratio of CoːIn is found to be 10.7:6.3. And, under this optimal ratio, Co-AIS can degrade 95 % of RhB in 1.5 h or 76 % of 4-NP in 2.5 h, respectively. The photocatalytic mechanism is proposed based on the active species trapping experiment, EPR technique, optical properties characterization, and the flat-band potential determination. Moreover, the photocatalytic water splitting performance of Co-AISs with or without the modification of the multi-walled carbon nanotubes (MWCNTs) are investigated, and remarkable hydrogen production is achieved. This research will open a new gateway to synthesizing AgInS 2 -based materials and exploring their photocatalytic activities.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 5
·1-16
·
IF 2.4
Bai Yang,Chen Zhongxiang,Gu Deng,Wang Ren,He Jianing
The Surface Plasmon Resonance (SPR) effect and the construction of Z-scheme heterojunctions are critical for enhancing photocatalytic rates. Herein, a composite material composed of a Z-scheme heterojunction structure, AgInS 2 /g-C 3 N 4 (AIS/GCN), was developed and further optimized through the modification of Ag nanoparticles (Ag NPs). The SPR effect of Ag NPs significantly improved the electron transfer characteristics of GCN, leading to enhanced separation efficiency of electron-hole pairs. By leveraging the advantages of the Z-scheme heterojunction, the composite not only effectively enhanced charge carrier separation but also improved light absorption and increased the density of active catalytic sites. To evaluate the photocatalytic degradation efficiency of Rhodamine B (RhB) and the photoreduction efficiency of Cr (VI) using the Ag/AIS/GCN nanocomposite, a systematic characterization analysis was conducted. The results demonstrated that the degradation rate and photoreduction efficiency of the Ag NPs-modified AIS/GCN Z-scheme heterojunction composite were 5.30 times and 7.22 times higher than those of pure GCN, the TOC removal rate of the sample reached 56.19%. The incorporation of Ag NPs and AIS significantly enhanced light energy utilization efficiency, increased the number of surface-active sites, and improved charge carrier transport rates. This study illustrates that the combination of the SPR effect and Z-scheme heterojunction construction markedly enhances the efficiency and stability of the photocatalyst, indicating the broad potential applications of this composite in dye purification and heavy metal removal. Graphical
研究领域:
材料科学
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Zehao Hu,Ting Chen,Zhixiang Xie,Chunxian Guo,Weihui Jiang,Yuanhong Chen,Yanqiao Xu
Microwave organic phase preparation of AgInS 2 quantum dots (QDs) is extremely essential to the large-scale, green and efficient preparation of AgInS 2 QDs. Here, commercial glycerol is used as the microwave absorber to prepare AgInS 2 QDs in nonpolar organic solvent octadecene at reaction temperature range of 100–180 °C. The AgInS 2 QDs can be obtained within 15 min and exhibit tunable photoluminescent properties. After decorating by ZnS layer, the prepared AgInS 2 @ZnS core/shell QDs emitted a bright orange-yellow light under ultraviolet light irradiation, and its quantum yield increased from 13.66% to 33.10%. Moreover, it exhibited excellent spectral tunability among the range of 608.0 nm–549.8 nm with the molar ratios of Zn/AgIn changed from 0 to 3. Finally, a WLED was fabricated by combining AgInS 2 @ZnS QDs and Y 3 Al 5-x Ga x O 12 :Ce 3+ phosphors with a blue chip, the color rendering index (CRI), correlated color temperature (CCT), and luminous efficiency (LE) of the device was 87.6, 3361 K, and 58.83 lm/W, respectively, indicating the great application prospect in illumination. The research explores a novel avenue for the fast and efficient synthesis of I–III–VI semiconductor QDs in nonpolar solvent via microwave method.
研究领域:
材料科学
·
光学工程
·
纳米技术
✓ 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）