当前位置: X-MOL 学术J. Eur. Ceram. Soc. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Photocatalytic ceramic tiles: Challenges and technological solutions
Journal of the European Ceramic Society ( IF 5.7 ) Pub Date : 2017-11-20 , DOI: 10.1016/j.jeurceramsoc.2017.11.039
Andre L. da Silva , Michele Dondi , Mariarosa Raimondo , Dachamir Hotza

Titania-functionalized ceramic tiles are gaining space on the market of the self-cleaning photocatalytic building materials after a decade of industrial attempts and investigation on different technological issues. The present paper overviews the latest research on photocatalytic ceramic tiles in terms of process parameters, durability, cleanability and photoactivity, addressing challenges and solutions reported by academic and industrial sources. A special attention is paid to the superhydrophilicity and photocatalytic performance achievable on ceramic surfaces and their complex dependence on several factors (titania crystalline phase, deposition technique; firing temperature; thickness, roughness, specific surface area of the photoactive film; and so on). In particular, the methods used to deposit the titania layer, its degree of adhesion and effects on tile appearance (color, brightness, and roughness) are reviewed. Moreover, manufacturing a photocatalytic ceramic tile with a single firing step is still a challenge. Despite the international standards available on photocatalytic performance, the experimental parameters from one research to another may be quite different, therefore a performance comparison becomes virtually impossible. Nevertheless, among the available commercial products declared as photocatalytic ceramic tiles, just some of them revealed to be photoactive. From the data available, superhydrophilicity of tiles corresponded to contact angles with water in the 10–15° range. Specific photoactivity measured as methylene blue (MB) degradation resulted typically in the 2.8–3.4 mol/m2h range; photonic efficiency was between 0.025 and 0.030%; while MB index was in the 15–20 range. Finally, the relationship of dye degradation with the self-cleaning property is also a question that remains unanswered.



中文翻译:

光催化瓷砖:挑战和技术解决方案

经过十年的工业尝试和对不同技术问题的研究,二氧化钛功能化的瓷砖在自清洁光催化建筑材料市场上获得了空间。本文概述了光催化瓷砖的最新研究,包括工艺参数,耐久性,清洁性和光活性,解决了学术界和工业界报道的挑战和解决方案。要特别注意陶瓷表面可实现的超亲水性和光催化性能,以及它们对多种因素(二氧化钛结晶相,沉积技术,烧结温度,厚度,粗糙度,光敏膜的比表面积等)的复杂依赖性。特别地,用于沉积二氧化钛层的方法,审查了其粘附程度以及对瓷砖外观(颜色,亮度和粗糙度)的影响。而且,用单个烧制步骤制造光催化瓷砖仍然是一个挑战。尽管有关于光催化性能的国际标准,但一项研究与另一项研究的实验参数可能会大不相同,因此实际上不可能进行性能比较。然而,在宣布为光催化瓷砖的市售产品中,只有其中一些显示出具有光活性。根据现有数据,瓷砖的超亲水性与水的接触角在10–15°范围内。以亚甲基蓝(MB)降解来衡量的特定光敏性通常导致2.8–3.4 mol / m 和粗糙度)。而且,用单个烧制步骤制造光催化瓷砖仍然是一个挑战。尽管有关于光催化性能的国际标准,但从一项研究到另一项研究的实验参数可能会大不相同,因此实际上无法进行性能比较。然而,在宣布为光催化瓷砖的市售产品中,只有其中一些显示出具有光活性。根据现有数据,瓷砖的超亲水性与水的接触角在10–15°范围内。以亚甲基蓝(MB)降解来衡量的特定光敏性通常导致2.8–3.4 mol / m 和粗糙度)。而且,用单个烧制步骤制造光催化瓷砖仍然是一个挑战。尽管有关于光催化性能的国际标准,但一项研究与另一项研究的实验参数可能会大不相同,因此实际上不可能进行性能比较。然而,在宣布为光催化瓷砖的市售产品中,只有其中一些显示出具有光活性。根据现有数据,瓷砖的超亲水性与水的接触角在10–15°范围内。以亚甲基蓝(MB)降解来衡量的特定光敏性通常导致2.8–3.4 mol / m 尽管有关于光催化性能的国际标准,但一项研究与另一项研究的实验参数可能会大不相同,因此实际上不可能进行性能比较。然而,在宣布为光催化瓷砖的市售产品中,只有其中一些显示出具有光活性。根据现有数据,瓷砖的超亲水性与水的接触角在10–15°范围内。以亚甲基蓝(MB)降解来衡量的特定光敏性通常导致2.8–3.4 mol / m 尽管有关于光催化性能的国际标准,但从一项研究到另一项研究的实验参数可能会大不相同,因此实际上无法进行性能比较。然而,在宣布为光催化瓷砖的市售产品中,只有其中一些显示出具有光活性。根据现有数据,瓷砖的超亲水性与水的接触角在10–15°范围内。以亚甲基蓝(MB)降解来衡量的特定光敏性通常导致2.8–3.4 mol / m 在宣布为光催化瓷砖的市售产品中,只有其中一些显示具有光活性。根据现有数据,瓷砖的超亲水性与水的接触角在10–15°范围内。以亚甲基蓝(MB)降解来衡量的特定光敏性通常导致2.8–3.4 mol / m 在宣布为光催化瓷砖的市售产品中,只有其中一些显示具有光活性。根据现有数据,瓷砖的超亲水性与水的接触角在10–15°范围内。以亚甲基蓝(MB)降解来衡量的特定光敏性通常导致2.8–3.4 mol / m2小时范围;光子效率在0.025至0.030%之间; MB指数在15–20范围内。最后,染料降解与自清洁性能之间的关系也是一个尚未解决的问题。

更新日期:2017-11-20
down
wechat
bug