INORGANIC CHEMISTRY
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2025
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IF 4.7
Lang Pei,Yingqiang Yu,Zhanfeng Ma,Xusheng Wang,Qinan Mao,Jiasong Zhong
Sr2MgSi2O7/Eu2+, Dy3+ (SMSED) phosphors show promise for persistent luminescence applications due to their long afterglow and robust chemical stability. However, a trade-off exists between achieving precise size and shape control of SMSED and maintaining prolonged afterglow intensity and duration during synthesis. Herein, we unveil a molten-salt method that successfully produces uniform single-crystalline plate-like SMSED for the first time. This synthesis significantly reduces both the sintering temperature and time compared to the classic solid–state reaction (SSR) method. Owing to the nanoplates structure, uniform size distribution, and single-crystal nature, the resulting SMSED exhibited excellent afterglow performance and thermal stability, with a sustained blue afterglow exceeding 24 h and retaining >70% of its initial luminescence up to 523 K, outperforming most reported SMSED phosphors. These remarkable properties underscore the considerable potential of SMSED nanoplates for applications in fingerprint detection. This work unlocks a new synthetic frontier for achieving the controllable synthesis of SMSED phosphors, paving the way for future optimizations aimed at the development of advanced persistent luminescent phosphors.
研究领域:
材料科学
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化学
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2017
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IF 3.133
Liupeng Pan,Shunli Liu,Xiaolu Zhang,Olayinka Oderinde,Fang Yao,Guodong Fu
We report a kind of dopant (Eu 2+ ) and co-dopant (Dy 3+ ) co-doped strontium magnesium silicate phosphor synthesized via microwave irradiation in a weak reductive atmosphere of active carbon. X-ray diffraction (XRD) patterns illustrated that the samples were nearly pure Sr 2 MgSi 2 O 7 phase, in which the Sr 2 MgSi 2 O 7 host phase has the maximum fraction of tetragonal crystallography Sr 2 MgSi 2 O 7 phase. A series of long afterglow luminescent materials were synthesized to investigate the best synthetic conditions. The results showed that the optimal concentration of H 3 BO 3 and the best sintering time were 5 wt% and 30 min, respectively. The phosphors made from the microwave irradiation method demonstrated excellent luminescence performance and the microwave irradiation method provide a strategy for the synthesis of other alkali earth aluminate and silicate, or other luminescent materials.
研究领域:
材料科学
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发光材料
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合成方法
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DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
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2022
·Vol. 105
·期 2
·500-510
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IF 2.606
Huang Anding,Wu Yikun,Pan Zixin,Wang Bangyu,Liang Xiaoping
In order to improve the water resistance of SrAl 2 O 4 :Eu 2+ , Dy 3+ , the composite long afterglow material Sr 2 MgSi 2 O 7 :Eu 2+ , Dy 3+ @ SrAl 2 O 4 :Eu 2+ , Dy 3+ was prepared by covering uniform and stable Sr 2 MgSi 2 O 7 sol on SrAl 2 O 4 :Eu 2+ , Dy 3+ powder, which was synthesized via traditional solid-state method. The effects of various factors, such as the amount of ammonia, the molar ratio of Sr 2 MgSi 2 O 7 :SrAl 2 O 4 and the content of H 3 BO 3 , on the structure and luminescent properties of Sr 2 MgSi 2 O 7 :Eu 2+ , Dy 3+ @ SrAl 2 O 4 :Eu 2+ , Dy 3+ were investigated by the response surface method. The results show that the influence extent on both the initial afterglow brightness and water resistance are as follows:the amount of ammonia> the content of H 3 BO 3 > the molar ratio of Sr 2 MgSi 2 O 7 :SrAl 2 O 4 . When the amount of ammonia, the molar ratio of Sr 2 MgSi 2 O 7 :SrAl 2 O 4 and the content of H 3 BO 3 is 1.64 mL, 11.10, and 0.006 mol, respectively, both the brightness and water resistance of Sr 2 MgSi 2 O 7 :Eu 2+ , Dy 3+ @ SrAl 2 O 4 :Eu 2+ , Dy 3+ are improved, the water resistance is 0.835 (51.82% higher than that of pure SrAl 2 O 4 ) and the initial afterglow brightness can reach 2793 mcd/m 2 (91.69% higher than that of pure SrAl 2 O 4 ), which were in good agreement with the predicted optimum value of 0.867 and 2720 mcd/m 2 , respectively. Under the optimization conditions, the synergistic action of SrAl 2 O 4 with excellent afterglow properties and Sr 2 MgSi 2 O 7 with high water resistance plays an important role in improving the water resistance without sacrificing brightness. Finally, the water-based light-emitting inks with SMSA as fluorescent pigment exhibit excellent luminescent properties in the dark.
Graphical abstract
研究领域:
材料科学
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光学
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DOI
高影响因子
CHEMOSPHERE
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2025
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IF 8.1
Si-yuan He,Wei Wen,Peng Wu,Zhe Meng
Developing a green and efficient technology for decomposing aflatoxin B 1 (AFB 1 ) and ochratoxin A (OTA) in grains has important theoretical value and application prospects for ensuring food safety. A dual Z-scheme ternary heterojunction photocatalyst, Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ /BiVO 4 /NH 2 -UiO-66 (SBN), was prepared via a self-assembling hydrothermal approach. The SBN heterojunction photocatalyst exhibits round-the-clock photocatalytic activity due to the intrinsic light source of Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ (SMS). Dual Z-scheme mechanism was proposed and validated through detailed analysis of quenching experiments, ESR spectra, band arrangement, and charge transfer processes. The dual Z-scheme mechanism not only promotes the effective transfer and separation of photo generated charge carriers during charge carrier transport, but also maintains significant reduction and oxidation potentials. SBN photocatalyst exhibits stable and persistent photocatalytic performance, significantly enhancing the degradation efficiency of AFB 1 and OTA under all-weather conditions. Experimental data shows that the removal rate of AFB 1 increased from 69.60 % after 60 min of illumination to 83.9 % after 4 h of turning off the light source; At the same time, the removal rate of OTA increased from 64.8 % to 78.1 %. •O 2 − and •OH were identified as key active species in photocatalytic reactions. Based on the analysis of AFB 1 and OTA degradation intermediates and the prediction of degradation sites using density functional theory (DFT), degradation pathways for AFB 1 and OTA were proposed. Collectively, these findings suggest a highly promising practical approach for the detoxification of mycotoxins in grain commodities.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2021
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IF 6.707
Ou Hai,Mengkang Pei,Enlong Yang,Qiang Ren,Xiulan Wu,Yujing Zhao,Liang Du
The single color of long afterglow luminescence materials is one of the important factors restricting its development. Here, we uniformly disperse all-inorganic cesium lead halide (CsPbBr 3 ) perovskite quantum dots (PeQDs) with strong stability on the surface of Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ (SMS) to adjust the afterglow luminescence color. CsPbBr 3 PeQDs has high quantum yield, and its excitation spectrum (around 400–500 nm) overlaps with the emission spectrum (around 465 nm) of SMS, so that the tunable afterglow emission from blue (around 465 nm) to green (around 525 nm) can be achieved by controlling the dosage of CsPbBr 3 PeQDs, and its chromaticity coordinates can be from (0.1280, 0.1360) to (0.2010, 0, 7460). The quantum yield of the composite remains almost unchanged, and the luminescence intensity remains stable and does not decrease when the composite is irradiated by ultraviolet light for 2 h; When exposed to air, the luminescence property remained about 80 percent after 10 days. This study provides a research direction for the polychromatic adjustment of long afterglow luminescent materials.
研究领域:
材料科学
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光学
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DOI
高影响因子
ACS Applied Nano Materials
·
2023
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IF 5.9
Ou Hai,Jian Li,Mengkang Pei,Qiang Ren,Xiulan Wu,Bin Qin,Xinnan Xiao,Xiaoli He,Tong Li,Yang Chen
Advanced fluorescence anti-counterfeiting technology has attracted the attention of researchers and encourages people to develop more materials with more colors and functions. Here, in order to achieve a full-band afterglow in the visible light region, we designed a composite CsPbI3-CsPbBr3/Sr2MgSi2O7:Eu2+,Dy3+@SiO2, which is composed of nanoscale all-inorganic cesium lead perovskite quantum dots (PQDs) and long-afterglow luminescent materials Sr2MgSi2O7:Eu2+,Dy3+ (SMS). SMS is used to store light energy, and PQDs are used to control afterglow emission colors; through their energy transfer, the afterglow colors can be adjusted in the visible region. SiO2 is used as the coating material to improve the temporary stability of the nanocomposite. The composite mixed with oleic acid (OA) can be used as a dye, which exhibits different emitting colors and afterglow colors under different excitation environments. This research provided an idea for using long-afterglow luminescent materials and PQDs in the field of fluorescence anti-counterfeiting by double anti-counterfeiting of fluorescence and afterglow.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Ou Hai,Jiaxin Qin,Peng Li,Xin An,Keke Guan,Hulin Liu,Yuanting Wu
Achieving diverse persistent colors is an important strategy for the application of long persistent phosphors in anti-counterfeiting. Utilizing the light conversion of perovskite quantum dots is an important approach. However, achieving rapid, in-situ, and green fabrication of perovskite quantum dots (QDs) on the surface of long persistent phosphors remains a key challenge. This work proposes a strategy: adsorbing an aqueous CsPbI 3 solution into the porous silica layer on the surface of Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ (SMS), followed by rapid drying to generate CsPbI 3 QDs in situ. This approach enables efficient fabrication of the nanocomposite Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ @CsPbI 3 -SiO 2 (MISNs) while preserving the crystallinity of CsPbI 3 QDs. Interestingly, MISNs exhibit differential luminescence under excitation with light of varying wavelengths, even after removal of the excitation source, CsPbI 3 QDs can absorb long persistent luminescence (LPL) energy from SMS and convert it into their own fluorescent (FL) emission, thereby enhancing the concealment capability for advanced anti-counterfeiting. MISN-based luminescent inks can be deposited on common substrates (e.g., glass, aluminum foil, rubber) to form stable multicolor anti-counterfeiting marks. This study offers novel insights into the multicolor development of long persistent phosphors and the advancement of anti-counterfeiting technologies.
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2026
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IF 6
Yiyan Wang,Yanjie Zhang,Yunan Lin,Zheng Wei,Haohao Cao,Jingjie Yu,Zhiguo Xiao
Red-Green-Blue (RGB) phosphors are promising for optical information encoding and full-spectrum white light-emitting diodes (WLEDs). Herein, KCsPbBr 3 perovskite quantum dots (PQDs, ∼5.0 nm) were successfully formed on Sr 2 MgSi 2 O 7 : Eu 2+ phosphors via a facile deposition–precipitation method, yielding blue-green emitting composites. The KCsPbBr 3 -Sr 2 MgSi 2 O 7 : Eu 2+ composites exhibit tunable emissions at 463 nm and 519 nm under 365 nm excitation. Specifically, the blue emission at 463 nm is attributed to the 4f 6 5 d 1 → 4f 7 transition of Eu 2+ ions in the Sr 2 MgSi 2 O 7 host, while the green emission at 519 nm originates from the emission of KCsPbBr 3 perovskite quantum dots. Notably, the emission intensity at 75 wt% KCsPbBr 3 is ∼240 times higher than that at 9 wt% and a blue afterglow persists after removing UV excitation. Under external stimulation, the composites display color-variable patterns with fluorescence mode conversion, enabling multi-dimensional anti-counterfeiting. For instance, an RGB pattern appears white under natural light but transforms into a red-green pattern under UV and afterglow modes. Furthermore, full-spectrum WLEDs with high color rendering (Ra = 90, Rf = 83, Rg = 91), comparable to sunlight, are achieved by combining the composites with CaAlSiN 3 : Eu 2+ . These results indicate that KCsPbBr 3 -Sr 2 MgSi 2 O 7 : Eu 2+ PQD phosphors have strong potential in advanced anti-counterfeiting and full-spectrum WLED applications.
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高影响因子
CERAMICS INTERNATIONAL
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2025
·
IF 5.6
Ou Hai,Peng Li,Xin An,Weikang Dong,Tong Li,Zechuan Qi,Yuanting Wu
In order to broaden the application field of long afterglow materials, it is a challenge to realize high stability and multicolor properties of long afterglow materials. The photoconversion method is a condition that enables simultaneous afterglow color shifts, however, the stable and efficient photoconversion agent is an urgent problem. This study propose a strategy to synthesize CsPbBr 3 quantum dots (QDs) directly within porous SiO 2 on the surface of Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ (SMS). The resulting composites achieve a shift in emission and afterglow color from blue (about 468 nm) to green (about 520 nm), and in the UV irradiation for 8 days, the luminous intensity is almost unaffected, in the air exposure for 3 months, the luminous intensity can still be maintained at more than 80 % of the initial value. Since the synthesized composite material is a powder, it can be mixed with various media. Composite materials can be homogeneously mixed with coatings, resulting in coatings with a variety of luminescent colors and producing effective multicolor luminescence, which has significant potential in the field of luminescent coatings and anti-counterfeiting.
研究领域:
材料科学
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光学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Xiao-hu Ma,Si-yuan He,Zhe-rui Zhang,Zhe Meng
Persistent light-emitting materials (PLMs), which have the potential to store and release light energy after light irradiation, are receiving increasing attention for their role in prolonging the lifetime of photogenerated electrons for the development of photocatalysts with round-the-clock applications. In this paper, a double S-scheme Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ /ZnIn 2 S 4 /UiO-66-NH 2 (SZU) heterojunction with round-the-clock catalytic activity was prepared by hydrothermal self-assembly method. The photocatalytic performance of the SZU heterojunction for RhB(MB) degradation was significantly improved compared with the pristine ZnIn 2 S 4 and UiO-66-NH 2 . The SZU heterojunction has excellent catalytic degradation performance for RhB (MB), and the removal rate of RhB (MB) reaches 72.2 % (81.7 %) after visible light irradiation for 40 (60) minutes. After the end of light, the total removal rate of RhB (MB) reached 86.7 % (96.8 %) when the catalysis continued for several hours under dark conditions, which was 14 % and 15 % higher than that under visible light irradiation, respectively. Based on the characteristics of SMS photoluminescence, combined with a large number of photocatalytic experiments, The sustained photocatalytic activity was enhanced under both daytime and darkness conditions, not only because of the production of SZU complexes, which prolonged the visible light response of ZnIn 2 S 4 , but also because of the construction of double S-scheme heterojunctions, which facilitates the light storage capacity, charge transfer, and the separation of photo-induced charge carriers and effectively promoted the photocatalytic activity of the photocatalysts. This work contributes to a deeper understanding of the design of round-the-clock photocatalysts, and provides a useful exploration for the practical application of photocatalytic technology.
研究领域:
材料科学
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环境科学
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光催化技术
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产品关联
DOI
高影响因子
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