ACS Applied Electronic Materials
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2024
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IF 4.3
Renhan Li,Qinglong Hu,Wenhao Xu,Denghao Li,Shiqing Xu,Gongxun Bai
As an environmentally functional material, zeolite solids can strongly adsorb and decompose harmful indoor gases, such as formaldehyde, to improve the home environment. Rare earth sulfide as a nontoxic and environmentally friendly pigment with good coloring performance is one of the promising choices to replace toxic cadmium- and lead-based pigments. In this work, multifunctional red γ-Ce2S3 pigments coated with microporous zeolite solids have been prepared by a hydrothermal method. The preparation process is safe and environmentally friendly. The fabricated composite solids not only absorb gas and water but also absorb water by microporous structures. The solids also show a stable red color, self-cleaning, and radiative cooling. Our results suggest that the multifunctional red cerium sulfide pigment-coated zeolite solids can be applied in color display, temperature and humidity control, and air purification.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
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IF 5.6
Menghang Qi,Liangsheng Tian,Qiuying Wang,Ruoxiu Xiao,Nan Hu,Lin Shi,Theeranun Siritanon,Peng Jiang
The CaFe 2- x In x O 4 (0 ≤ x ≤ 1) pigment with red shade was successfully synthesized through solid state reactions. The crystal structure, color development mechanism, morphology and its application in the glaze were studied. XPS analysis confirmed Fe resides in +3 oxidation state. Combined with UV-Vis-NIR analysis, it is determined that the formation of red shade of the pigment is due to the 6 A 1 (S) → 4 T 2 (D), 6 A 1 (S) → 4 A 1 , 4 E(G) and 6 A 1 (S) → 4 T 2 (G) transitions of Fe 3+ in the visible light region. The pigment was applied to the lead-free low temperature glaze to evaluate its potential in preparing new glaze color. The as-synthesized glaze showed orange-red shade. With increased In 3+ doping concentration, the glaze demonstrates a stronger red tone. The glaze also shows high NIR solar reflectance. Inferred from SEM-EDS, the pigment particles are evenly scattered in the glaze. Therefore, CaFe 2- x In x O 4 (0 ≤ x ≤ 1) red pigment is a qualified candidate for red shade glaze preparation.
研究领域:
材料科学
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陶瓷学
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无机化学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Yijie Yang,Meiqi Zhang,Luo Feng,Bin Huang,Ruiying Zhai,Xiaoqi Sun
In order to alleviate the ecological pressure caused by rare earth tailings, this study focuses on the application of ion-adsorbed rare earth tailings in the preparation of functional pigments. By using mechanical grinding and high-temperature calcination , 33 new functionalized red pigments were successfully prepared by doping iron and lanthanum elements. X-ray diffraction (XRD), scanning electron microscopy (SEM), CIE 1976 color space system, and ultraviolet–visible–near-infrared spectrophotometer were used for characterization. The synthesized pigment exhibits a rich color range from light yellow to reddish brown. Compared with commercially available iron red pigments, it exhibits significantly enhanced near-infrared reflectance, excellent acid and alkali resistance, and strong thermal stability up to 900 °C. It is worth noting that pigment P-1-2-1 achieved the best red value (L* = 43.73, a* = +24.07, b* = +15.65) with a maximum near-infrared reflectance of 91 %. Therefore, the utilization of rare earth tailings as raw materials for the preparation of functional pigments has significant effects. This study provides valuable insights for the development of eco-friendly pigments, which not only helps alleviate the urban heat island effect but also promotes the sustainable utilization of rare earth tailing resources, contributing to the achievement of carbon neutrality goals.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Hongwei Luo,Yifeng Zeng,Yaoyao Zhao,Yahui Xiang,Yu Li,Xiangliang Pan
Microplastics (MPs) in natural environments undergo various aging processes. So far, little is known about the effects of chemical oxidation on leachates and properties of MPs. Here, we investigated the removal of pigment red from MPs by ozonation , Fenton , and heat-activated persulfate treatments, and further explored the nanoscale surface properties of treated MPs. Experimental results indicated that advanced oxidation processes effectively degraded pigment red released from MPs and the degradation rate was much faster than the leaching rate of pigments. Dominant reactive oxygen radicals in the ozone, Fenton, and heat-activated persulfate systems were identified as O 2 •− , HO•, and SO 4 •− , respectively. Height ranges of untreated, ozone-treated, Fenton-treated, and persulfate-treated MPs were 73 nm, 163 nm, 195 nm, and 206 nm, respectively. Oxidation of the -CH 3 and -CH 2 bonds occurred on the surface of treated MPs and the persulfate system achieved more serious oxidation degree than the ozone and Fenton systems. Addition of pigment red to the plastic polymer increased the glass transition temperature of MPs, which then showed a decline after advanced oxidation treatments except Fenton. The surface of persulfate-treated MPs was the stiffest, but the stiffness distribution of the ozone-treated and Fenton-treated MPs was more uneven. These research findings provide promising strategies to accelerate the aging process of MPs and contribute to a better understanding of the effects of aging on the environmental behavior of MPs.
研究领域:
环境科学
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化学工程
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材料科学
✓ 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）