Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Liwen Wang,Guang Wu,Tengfei Wang,Dating Tian
Organophosphorus pesticides (OPs) are commonly employed in agriculture because they effectively control pests and increase crop output. However, most OPs are highly toxic. As a result, precise detection of OPs residues is critical for monitoring human disease and protecting the environment. In this work, we developed an aggregation-induced emission (AIE) probe of Sm-GSH-CuNCs for sensitive and visual detection of OPs by combining Sm 3+ with glutathione-modified copper nanoclusters (GSH-CuNCs). Using glyphosate as the OPs model, the fluorescence of GSH-CuNCs was quenched due to the stronger affinity between Sm 3+ and glyphosate than that between Sm 3+ and GSH-CuNCs, as well as the formation of new P-O-Sm bonds between Sm 3+ and glyphosate , resulting in the "on-off" response of the AIE probe. The Sm-GSH-CuNCs probe detected glyphosate throughout a linear range of 0.338–5.070 mg/L, with a detection limit of 0.013 mg/L. Furthermore, we have constructed an Sm-GSH-CuNCs agar slice detection platform that used smartphone assistance to detect glyphosate visually and quantitatively. A good linear relationship between R/B values and OPs concentrations( C i ) was discovered: R/B =-0.316 C i +1.943 ( R 2 =0.9970). This work provided a simple, low-cost, and portable detection method for quantifying or visualizing OPs.
研究领域:
分析化学
·
环境科学
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Daomiao He,Likun Guan,Huayu Sun,Fanzhong Zeng,Fei Li,Leyi Zhang,Wenhao Li,Huajuan Deng,Dan Zhang,Ruijin Yu
A novel series of samarium-activated orange-red emitting CaY 2 Sb 2 (ZnO 4 ) 3 (CYSZO) phosphors has been successfully synthesized by the high-temperature solid-state method. The phase purity, spectroscopy, and morphological properties of the phosphors have been extensively characterized. When excited at 407 nm, CYSZO:Sm 3+ samples exhibited a pronounced orange-red emission peak at 610 nm, this corresponding to the typical 4 G 5/2 → 6 H 7/2 both magnetic-dipole and electric-dipole transitions of Sm 3+ ions. The optimal doping concentration was established as 10 mol%. The quenching mechanism is attributed to the interaction of the nearest-neighbor ions. The prepared sample showed a remarkable internal quantum efficiency (IQE) of 68.63 % and exceptional thermal stability at working temperature of the LEDs. As the Sm 3+ concentration increased, the decay time decreased correspondingly, ranging from 2.45 ms to 1.40 ms for concentrations ranging from 0.6 to 40 mol%. The phosphor materials exhibited high color purity, as evidenced by the Commission International de L'Éclairage (CIE) chromaticity coordinates. The synthesized white light-emitting diode (w-LED) exhibited an impressive color rendering index (CRI) of 96 and a desirable correlated color temperature (CCT) of 5674 K. Furthermore, the CYSZO:10 mol%Sm 3+ @oleic acid phosphor-stained latent fingerprint (LFP) images show excellent visualization capabilities on various surfaces with high contrast and long-term stability. These results highlight the potential of CYSZO:Sm 3+ phosphors to serve as a promising orange-red material for w-LED applications and LFP detection.
研究领域:
材料科学
·
光学
·
法医学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 45
·17343-17352
·
IF 8.067
Shao Yan,Yanjie Liang,Yi Zhang,Bibo Lou,Jingwei Liu,Dongxun Chen,Shihai Miao,Chonggeng Ma
Solar-blind ultraviolet-C (UVC; 200–280 nm) luminescent materials have exhibited great potential for wide applications in photomedicine and photochemistry due to the unique spectral features of UVC light. However, it is still a challenging work to develop persistent phosphors emitting in the UVC spectral region owing to the lack of suitable host materials and emitting centers. Herein, we report a series of LiLuSiO4:Pr3+,Sm3+ UVC persistent phosphors that can be charged by a 254 nm UV lamp or a high-energy X-ray beam giving rise to long-lasting UVC light emission peaking at 280 nm. More importantly, a considerable enhancement of UVC afterglow intensity and decay time has been achieved by Sm3+ co-doping because the Sm3+ ions can act as effective electron traps, which has been verified by the spectroscopic investigations and first-principles calculations. On top of this, narrowband ultraviolet-B (NB-UVB) persistent luminescence with a line emission at 313 nm has also been realized by introducing Gd3+ into LiLuSiO4:Pr3+,Sm3+ persistent phosphors based on persistent energy transfer from Pr3+ to Gd3+. Considering that the UVC and NB-UVB persistent luminescence can fully avoid severe interference from ambient light, the as-prepared LiLuSiO4:Pr3+,Sm3+ and Li(Lu,Gd)SiO4:Pr3+,Sm3+ persistent phosphors can find promising applications as invisible identification taggants in a bright environment.
研究领域:
材料科学
·
光化学
·
医学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yanzhi Zhang,Xiang Guo,Minghao Zhang,Ruirui Cui,Jun Zhang,Chaoyong Deng
In this study, a Sm 3+ ion-doped double perovskite structure oxide was developed to obtain a novel Ca 2 GaNbO 6 : Sm 3+ orange-red phosphor, which has compensated for the lack of a red component in commercial wLEDs . The results of morphological features and phase structure have confirmed that the synthesized compound maintains the same structure as Ca 2 GaNbO 6, and that Sm 3+ successfully enters into the main lattice of Ca 2 GaNbO 6 . In terms of optical properties , the photoluminescence (PL) emission spectra monitored at 406 nm has the strongest emission peak at 599 nm and shows strong orange-red light. The spectral shapes of PL at different concentrations remain consistent without wavelength drift, and perform best when the concentration is 3 mol%, that is, the concentration quenching point is 3 mol%. The quenching phenomenon is believed to be mainly attributed to dipole-dipole (d-d) interaction. The Ca 2 GaNbO 6 : 0.03Sm 3+ phosphor shows excellent color purity (CP = 99.0 %) and low color temperature (CCT = 1664 K) in terms of chromaticity (CIE). In terms of heat resistance , the thermal stability of Ca 2 GaNbO 6 : 0.03Sm 3+ phosphor is 82.80 % (423 K). The internal quantum efficiency (IQE) is 34.4 %. In terms of applications, the wLEDs made of Ca 2 GaNbO 6 : 0.03Sm 3+ phosphor emits warm white light and exhibit excellent performance in color rendering index and correlated color temperature (CRI = 94.5, CCT = 3877 K). At the same time, Ca 2 GaNbO 6 : Sm 3+ phosphor shows good solubility in PVA . Research shows that Ca 2 GaNbO 6 : Sm 3+ phosphor has good performance in the fields of wLEDs and security ink.
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
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Mingjie Dan,Zhichao Deng,Zijian Kong,Yi Yu,Xiurong Zhu,Huan Ye,Yingying Wang,Zishan Li,Mei Lai,Kenneth R. Poeppelmeier
The realization of white light emission in a single matrix has always been a problem that researchers are working on. As a new luminescent material, lead-free halide double perovskites(DPs) has made this idea possible due to its wide emission spectrum. However, the drawback of low photoluminescence quantum yield (PLQY) originated from self-trapping excitons (STEs) has seriously hindered their development and applications. In this study, we focused on Cs 2 NaGdCl 6 (CNGC) DP nanocrystals, and enhanced the STEs, corresponding to the much developed blue emission intensity at about 470 nm by introducing Sb 3+ , associated with the significant increase of PLQY up high to 90.09 % at the optimal doping level. To achieve the all-spectrum white light within this phosphor, the lack wavelengths at green and red region has to be compensated and Sm 3+ is an ideal candidate. Therefore, the spectrum of CNGC:Sb 3+ was expanded via further co-doping Sm 3+ and consequently the emission color is tuned from blue to white contributed by the effective energy transfer from STEs to Sm 3+ . Finally, an UV-excited LED device based on CNGC:Sb 3+ /Sm 3+ phosphor was fabricated and strong white light emitting was achieved. The CIE of the device coordinates in the cold white region of (0.33, 0.30), associated with the color temperature of 5794 K. All the results indicate that the CNGC:Sb 3+ /Sm 3+ phosphor possesses great potential in the application of full spectrum lighting as prominent single-component white light emitter.
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
RSC Advances
·
2018
·Vol. 8
·期 26
·14164-14170
·
IF 2.936
Bin Ma,Xiaoqin Ma,Tonghui Xu,Ke Su,Qianxin Zhang
Ca9La1−x(PO4)7:xSm3+ phosphors (0.01 < x < 0.25) were synthesized via high temperature solid-state reaction. Their properties including crystal structure, decay performance, thermal stability and photoluminescence were examined in detail. Phase analysis indicated that the phosphors crystallized in a rhombohedral structure, and the emission spectra of the phosphors consisted of four peaks centered around 570, 607, 653, and 714 nm, attributed to Sm3+ ions transitions 4G5/2 → 6HJ (J = 5/2, 7/2, 9/2, and 11/2, respectively). The optimal Sm3+ doping content was 0.12 mol and the Ca9La(PO4)7:Sm3+ phosphor also exhibited better thermal stability compared to other phosphors. In addition, the mechanism behind the energy transfer between Sm3+ ions was determined to be dipole–dipole interactions as described by Dexter theory. The results indicated that as orange-red phosphors, Ca9La (PO4)7:Sm3+ phosphors were promising candidates for being integrated into white light emitting diodes.
研究领域:
材料科学
·
无机化学
·
固体物理
·
发光材料
·
光电子学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2020
·
IF 4.495
Jiawei Zhang,Jian Wang,Dandan Gao,Huan Liu,Jiyang Xie,Wanbiao Hu
Ceramic-based capacitors for energy storage devices require simultaneously high energy density and efficiency. Achieving high electric breakdown field based on linear dielectrics is crucial. Here, A-site Sm 3+ doped perovskite Ca 1-1.5 x Sm x □ 0.5 x TiO 3 ceramics with introduced A-site vacancies ( V A ) were prepared. All Ca 1-1.5 x Sm x □ 0.5 x TiO 3 ceramics crystallize in an orthorhombic structure, with lattice constants a , b , and c linearly decreased. As a result of Sm 3+ dopants and V A , the grain size decreased while the ceramics’ density was improved. The permittivity decreases from 176 ( x = 0) to 135 ( x = 0.1), but tan δ is effectively constrained (∼10 −4 ). What’s more, the dielectric breakdown strength is significantly improved from 429 kV/cm ( x = 0) to 547 kV/cm ( x = 0.1) with dielectric linearity is maintained. The optimum energy storage density of 2 J/cm 3 ( x = 0.02) with ultrahigh energy efficiency of over 93.7 % is achieved, which are superior to many existing linear dielectrics and relaxor ferroelectrics. This work confirms the energy-storage enhancement through chemical modifications and microstructural engineering.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
Materials Today Chemistry
·
2022
·
IF 7.613
J. Du,S. Lyu,K. Jiang,D. Huang,J. Li,R. Van Deun,D. Poelman,H. Lin
Persistent luminescent materials containing deep-level traps have attracted extensive research interest in the field of optical information storage due to their unique features of long-lasting emission, energy storage, and controllable photon release upon external stimulations. However, the lack of suitable luminescent materials with deep-level traps is still the bottleneck of such an optical storage application. Herein, we report a series of persistent luminescent materials with reddish-orange emissions and controllable photon release upon thermal stimulation. Through substitution of Sn by Si, more and deeper trap levels are achieved in Sr 2 SnO 4 :Sm 3+ ,Si 4+ phosphors. Moreover, both ultraviolet light and high-energy X-ray irradiations can induce reddish-orange emitting persistent luminescence from the as-synthesized samples. Rewritable optical information storage and readout based on photon trapping and de-trapping processes are demonstrated. Optical information can be handily encoded using a commercially available 365 nm light-emitting diode, and decoded upon thermal stimulation. The Sr 2 SnO 4 :Sm 3+ ,Si 4+ phosphors as presented in this work show a great promise for rewritable optical data storage and information encryption.
研究领域:
材料科学
·
光功能材料
·
固态化学
·
信息存储技术
·
发光物理
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Shuang Shu,Yu Wang,Yuee Ke,Bin Deng,Rixin Liu,Qinyang Song,Jianxu Wang,Ruijin Yu
Novel orange-red-emitting tantalate NaCaTiTaO 6 (NCTT): x Sm 3+ ( x = 0.005–0.25) phosphors are synthesized via a solid-state reaction technique at 1300 °C. The phosphors exhibit an orthorhombic perovskite structure with a space group of Pnma (No. 62). At 407 nm excitation, the phosphors show the strongest emission peak at 647 nm belonging to the 4 G 5/2 → 6 H 9/2 transition. The optimal Sm 3+ concentration is 0.05 mol, and concentration quenching is caused by dipole–dipole interaction. The NCTT:0.05Sm 3+ phosphor exhibit a broad bandgap of 3.44 eV and a high color purity of 99.9%. At 420 K, the decrease in intensity is only 10% of the initial value at 300 K for NCTT:0.05Sm 3+ phosphor but 15% for Y 3 Al 5 O 12 :Ce 3+ phosphor. Consequently, the fabricated white light-emitting diodes exhibit a high rendering index value of 89, a good correlated color temperature of 5257 K, and CIE coordinates of (0.339, 0.364). Hence, the Sm 3+ -doped orange-red-emitting NCTT phosphors have potential applications for w-LEDs.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
NANO
·
2024
·
IF 1
Zhenqian Zhang,Yixing Li,Xinyue Yu,Bijun Fang
The rare-earth ion doping in nanocrystals has the advantage on improving the interested properties. As one of rare-earths, the trivalent samarium ion (Sm 3 + ) was used as a dopant. The precursor of Sm 3 + -doped cadmium ferrite (CdFe 2 O 4 ) nanocrystals was reacted in water-soluble polymeric nanoreactors as a dispersed phase in miniemulsion, and then calcinated to form doped nanocrystals. The 1% Sm 3 + -doped nanocrystal in small size exhibited the smaller narrow gap energy and weak photoluminescent emission intensity; which attributed to the positive influences on the photocatalytic degradation. The selected Sm 3 + -doped spinel ferrite nanocrystals provide a unique catalyzer for organic compound photodegradation.
研究领域:
材料科学
·
纳米技术
·
无机化学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 6
·7285-7293
·
IF 2.478
Wang Ziyao,Luan Xuezhu,Ma Guofeng,Chen Jian,Liu Yangai
A series of novel Sm 3+ activated yellow–orange-emitting phosphors have been synthesized successfully by the conventional solid-state method. Their phase composition and luminescence properties have been investigated and discussed systematically. Upon excitation at 410 nm, all the studied phosphors showed intense narrow emissions with a prominent peak centered at around 610 nm, corresponding to 4 G 5/2 — 6 H 7/2 transition. The critical concentration of Sm 3+ ions was determined to be 0.02, and the concentration quenching mechanism was verified as dipole–dipole interaction. The investigation of thermal stability revealed that the photoluminescence intensity of Ba 3 Lu 3.92 O 9 :0.08Sm 3+ at 425 K remained around 81.4% of that at 298 K. Besides, when excited at 410 nm, the studied phosphor exhibited high color purity of 99.5% with the CIE chromaticity coordinates of (0.5974, 0.4010) and a low Correlation Color Temperature of 2217 K. Consequently, it could be expected that the as-synthesized Ba 3 Lu 4 O 9 :Sm 3+ phosphors would be a promising candidate of yellow–orange component for warm white or amber LEDs.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Small
·
2020
·Vol. 16
·期 25
·2001551
·
IF 11.459
Shahid Ullah Khan,Waheed Ullah Khan,Wasim Ullah Khan,Dilfaraz Khan,Sumbul Saeed,Syed Badshah,Muhammad Ikram,Tawfik A. Saleh
The luminous efficiency of inorganic white light-emitting diodes, to be used by the next generation as light initiators, is continuously progressing and is an emerging interest for researchers. However, low color-rendering index (Ra), high correlated color temperature (CCT), and poor stability limit its wider application. Herein, it is reported that Sm 3+ - and Eu 3+ -doped calcium scandate (CaSc 2 O 4 (CSO)) are an emerging deep-red-emitting material with promising light absorption, enhanced emission properties, and excellent thermal stability that make it a promising candidate with potential applications in emission display, solid-state white lighting, and the device performance of perovskite solar cells (PSCs). The average crystal structures of Sm 3+ -doped CSO are studied by synchrotron X-ray data that correspond to an extremely rigid host structure. Samarium ion is incorporated as a sensitizer that enhances the emission intensity up to 30%, with a high color purity of 88.9% with a 6% increment. The impacts of hosting the sensitizer are studied by quantifying the lifetime curves. The CaSc 2 O 4 :0.15Eu 3+ ,0.03Sm 3+ phosphor offers significant resistance to thermal quenching. The incorporation of lanthanide ion-doped phosphors CSOE into PSCs is investigated along with their potential applications. The CSOE-coated PSCs devices exhibit a high current density and a high power conversion efficiency (15.96%) when compared to the uncoated control devices.
研究领域:
材料科学
·
光学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）