SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Ming Li,Xuemeng Zhang,Dongqing Wang,Xiaofei Fan,Qianyong Cao,Huining Xiao,Shiwei Guo,Chungang Yuan,Yuling Zhang
Nanofiltration membranes are extensively implemented in water treatment, particularly for the efficient interception of toxic heavy metal ions. This work introduces a novel functional membrane fabricated via interfacial polymerization, incorporating nitrogen and sulfur co-doped carbon dots (N, S-CDs) as additives to enhance mercury removal from aqueous solutions. The integration of carbon dots has been demonstrated to significantly augment the membrane’s hydrophilicity, thereby improving the pure water flux. Moreover, it modulates the crosslinking degree of the polyamide layer, enhancing mercury retention. The N, S-CDs, due to their high selectivity for Hg (II), confer the modified membrane with fluorescence detection capabilities, allowing for the precise quantification of mercury rejection. The membrane achieved a remarkable Hg (II) retention rate of 94.85 %, with a pure water flux of 10.68 L m −2 h −1 bar −1 , and attained a detection limit of 5.49 × 10 −7 M for Hg (II). The durability and reusability of the membrane are substantiated by soaking and recycling trials, underscoring the stable encapsulation of N, S-CDs within the nanofiltration matrix.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
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2025
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IF 3.6
Haitao Wang,Songyuan kong,Tengfei Tian,Liangyu You,Jie Li,Zhaoping Chen,Weiwei Huan,Tingting Miao,Xiaojuan Liang,Weidong Xiang
The growing demand for color conversion materials in laser projection displays has positioned phosphor-in-glass films (PiGF) as a promising solution. Single-side sapphire-based anti-reflection (AR) and high-reflection (HR) coatings were fabricated via electron beam evaporation on sapphire substrate backsides, involving alternate deposition of Ta 2 O 5 and SiO 2 thin films with varying thicknesses. These coatings significantly enhanced the optical performance of PiGF, improving its suitability for transmissive PiGF devices. The design enhances blue light in the 440–470 nm range, increasing transmittance from 85.5 % to 93.7 %. Visible light (500–700 nm) generated under blue excitation is reflected toward forward emission, boosting sapphire reflectance from 14.2 % to 94.3 %. As a result, excellent optical performance is achieved. In practical tests, the coated sapphire achieves 2770.6 lm at 12.9 W mm −2 and a luminous efficiency (LE) of 213.7 lm·W −1 , representing the 28.6 % improvement over the uncoated β-Sialon:Eu 2+ (β-Sialon) PiGF. This represents the best optical performance of β-Sialon PiGF to date. Building on this, the composite CaAlSiN 3 :Eu 2+ (CASN:Eu) with a color temperature of 6248 K has been developed, paving the way for the commercialization of PiGF composite materials in laser lighting and display applications.
研究领域:
光学材料
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光子学
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显示技术
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薄膜涂层
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固态照明
✓ 已验证
产品关联
DOI
高影响因子
POLYHEDRON
·
2023
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IF 2.6
Mengyun Chen,Rong Shao,Qiongqiong Wang,Yan Gao,Ye Ma,Rongfeng Guan,Tao Yang
Metal-organic framework (MOF) fluorescent materials have significant advantages in detecting organic pollutants and metal ion pollution. A zinc metal organic framework nanofiber fluorescent membrane (Zn(Eu)-MOF@PAN NFM) was prepared by doping the lanthanide metal Eu using an electrospinning and impregnation process. The structure and morphology of the membrane was characterized by SEM, XRD, FT-IR and XPS. The results show that the membrane has good fluorescence performance and can successfully and efficiently detect nitrobenzene (NB; detection limit = 0.861 ppm, K sv = 0.143 ppm −1 ), 4-nitrophenol (4-NP; detection limit = 0.631 ppm, K sv = 0.178 ppm −1 ), benzaldehyde (BA; detection limit = 0.981 ppm, K sv = 0.051 ppm −1 ) and Fe 3+ ions (detection limit = 3.418 ppm, K sv = 3.210×10 −3 ppm −1 ) in solution. In terms of repeatability and stability, the test results are obviously better than the property of the powder.
研究领域:
材料科学
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环境科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
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2025
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IF 12.4
Chang Liu,Ning Li,Linjie Luo,Xu Li,Zhiming Liu
A dual-layer pH-responsive fluorescent film was developed using hydroxypropyl methylcellulose (HPMC), zinc alginate (ZA), fluorescein isothiocyanate (FITC), and dragon fruit peel extract (DE) for real-time food freshness monitoring. The outer protective layer served as a hydrophobic barrier to reduce moisture interference, while the inner indicator layer acted as a pH-sensitive interface, integrating FITC's fluorescence and DE's visible color change for dual-mode sensing. The film exhibited good thermal stability, antimicrobial activity, and improved hydrophobicity. Optical responses were evaluated across a wide pH range (2.0–12.0), showing stable visible color under ambient light and enhanced fluorescence under 365 nm UV. Upon exposure to ammonia vapor, fluorescence intensity increased linearly from 0 to 1000 ppm (R 2 = 0.9895; LOD = 6.73 ppm), while visible color changes became evident at 500–5000 ppm, with R/B and R/G ratios exhibiting strong linearity (R 2 = 0.96176 and 0.96747; LODs = 1126 ppm and 958 ppm, respectively). Application trials with pork revealed distinct color changes after 4 days at 25 °C or 2 days at 5 °C. These results confirm the film's effectiveness for dual-mode, non-destructive, and real-time monitoring of pork freshness.
研究领域:
食品科学
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材料科学
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传感技术
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包装工程
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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）