Boosting the consolidation and antibacterial dual-functionalities of Ca(OH)2 mural restoration materials via supporting Ag/g-C3N4 on hexagonal nano-Ca(OH)2

IF 3.5 2区综合性期刊 0 ARCHAEOLOGY

Journal of Cultural Heritage Pub Date : 2025-03-27 DOI:10.1016/j.culher.2025.03.006

Ting Zhao , Yu-Tong Kou , Nian-Chen Ding , Jian-Feng Zhu , Wen-Zong Yang , Yi Liu , Yi Qin

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引用次数: 0

Abstract

Ca(OH)₂ is a well-known commercial inorganic consolidation material, which is used to restore tomb murals. Herein, nano-Ca(OH)₂ with a high specific surface grown by molecular confinement method was supported with photocatalyst Ag/g-C₃N₄ to form a highly permeable Ag/g-C₃N₄/Ca(OH)₂, which achieved consolidation and antibacterial properties of simulated murals. Ag/g-C₃N₄/Ca(OH)₂ forms a unique gradient permeation structure on tomb murals. In this structure, the Ca(OH)₂ nanomaterial penetrates deeply, while the Ag/g-C₃N₄-rich layers remain on the mural surfaces. The Ag/g-C₃N₄-rich layer effectively protects the murals from bacteria. The results indicate that the Ag/g-C₃N₄/Ca(OH)₂ nanocomposite significantly enhances the mural's strength and antibacterial properties when the silver ion doping content is 0.24. Its strengthening performance is 2 times higher than commercial Ca(OH)₂, while its antibacterial rate reaches 58.38 %, primarily due to its high permeability and stability. Further aging experiments indicate that the synthesized Ag_0.24/g-C₃N₄/Ca(OH)₂ nanocomposite has no adverse effect on the mural's pigment layer. This work offers a new method for developing effective materials to protect tomb murals.

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Ag/g-C3N4在六方纳米Ca(OH)2上的负载，增强Ca(OH)2壁面修复材料的固结和抗菌双功能

Ca(OH)2是一种众所周知的商业无机固结材料，用于修复墓葬壁画。本文采用分子约束法生长出具有高比表面的纳米Ca(OH)2，用光催化剂Ag/g-C3N4负载形成高渗透性的Ag/g-C3N4/Ca(OH)2，实现了模拟壁画的固结和抗菌性能。Ag/g-C3N4/Ca(OH)2在墓葬壁画上形成独特的梯度渗透结构。在这种结构中，Ca(OH)2纳米材料深入渗透，而Ag/g- c3n4富层保留在壁面上。富含Ag/g- c3n4的层有效地保护了壁画免受细菌的侵害。结果表明，当银离子掺杂量为0.24时，Ag/g-C3N4/Ca(OH)2纳米复合材料显著提高了壁面的强度和抗菌性能。其强化性能是商品Ca(OH)2的2倍，抑菌率达到58.38%，这主要得益于其高渗透性和稳定性。进一步老化实验表明，合成的Ag0.24/g-C3N4/Ca(OH)2纳米复合材料对壁画颜料层无不利影响。这项工作为开发有效的墓葬壁画保护材料提供了新的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Cultural Heritage 综合性期刊-材料科学：综合

CiteScore

6.80

自引率

9.70%

发文量

166

审稿时长

52 days

期刊介绍： The Journal of Cultural Heritage publishes original papers which comprise previously unpublished data and present innovative methods concerning all aspects of science and technology of cultural heritage as well as interpretation and theoretical issues related to preservation.