增强显色性能的单斜白钨矿型bivo4基材料的微观结构演化与动力学

IF 5.6 2区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS
Qihan Sun , Lin Yang , Fengjie Hu , Changhuan Liang , Haiwang Wang , Jian Qi
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引用次数: 0

摘要

随着环保意识的增强,迫切需要寻找对环境有害的传统重金属颜料的替代品。BiVO4 (BVO)作为一种无毒、环保的黄色颜料显示出相当大的潜力。然而,应该注意的是,现有的BVO颜料配方仍然存在一些挑战,如生产成本、耐风化性、晶体形态和粒度分布,这些共同限制了它们的广泛应用。鉴于单斜白钨矿BVO (ms-BVO)晶体具有优越的黄色色调和光学性质,本研究从热力学和动力学两个角度对ms-BVO晶体进行了研究,阐明了溶液酸碱环境、水热反应温度和反应时间对BVO晶体的影响。可以观察到,当pH调节为4 ~ 7,水热温度设置为120℃,水热时间不小于3 h时,更有利于形成具有晶体结构的ms-BVO。此外,将SiO2融入到复合颜料的制备中,考察了SiO2/BVO复合颜料的显色性能和分散性。分析表明,当SiO2的添加量达到最佳时,晶体尺寸增大,导致黄色色调更加强烈。本研究介绍了一种增强环境可持续BVO颜料的新方法,为其在工业上的广泛应用奠定了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Microstructural evolution and kinetics of monoclinic scheelite-type BiVO4-based materials with enhanced color performance
In light of the growing awareness of environmental protection, there is an urgent need to seek out alternatives to traditional heavy metal pigments that are known to be harmful to the environment. BiVO4 (BVO) demonstrates considerable potential as a non-toxic and environmentally friendly yellow pigment. However, it should be noted that existing BVO pigment formulations still present several challenges regarding production cost, weathering resistance, crystalline morphology, and particle size distribution, which collectively limit their widespread application. Given the superior yellow color tone and optical properties of monoclinic scheelite BVO (ms-BVO) crystals, this study examines ms-BVO from both thermodynamic and kinetic perspectives, elucidating the impact of solution acid-base environment, hydrothermal reaction temperature, and reaction time on BVO crystals. It can be observed that when the pH is adjusted to a value between 4 and 7, the hydrothermal temperature is set at 120 °C, and the hydrothermal time is not less than 3 h, the formation of ms-BVO with a crystal structure is more favorable. Additionally, SiO2 was integrated into composite pigment preparation to assess the color performance and dispersion of SiO2/BVO composite pigments. The analysis revealed that upon the addition of an optimal quantity of SiO2, the crystal size increased, resulting in a more intense yellow hue. This study introduces a novel approach for the enhancement of environmentally sustainable BVO pigments, establishing a foundation for their extensive utilization in industrial applications.
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来源期刊
Ceramics International
Ceramics International 工程技术-材料科学:硅酸盐
CiteScore
9.40
自引率
15.40%
发文量
4558
审稿时长
25 days
期刊介绍: Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.
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