TY - JOUR
T1 - Graphene-Enhanced Nanomaterials for Wall Painting Protection
AU - Zhu, Jinmeng
AU - Li, Xuanhua
AU - Zhang, Yuanyuan
AU - Wang, Jia
AU - Wei, Bingqing
N1 - Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/10/31
Y1 - 2018/10/31
N2 - Wall paintings as the highly valuable treasure have been facing severe damaging problems over the years. Ca(OH)2 as a promising material to protect them has been studied for more than a decade. However, the synthesis methods are still costly, complex, and usually, involve an organic solvent. In addition, problems such as large particle size (>150 nm), slow and weak carbonation, and low consolidation strength for wall paintings remain unsolved. This study demonstrates an unprecedented concept of wall painting protection enabled by graphene-enhanced nanomaterials through strategically synthesizing Ca(OH)2/graphene quantum dot (GQD) nanohybrids using a facile and economic aqueous method. The nanohybrids are uniform and small (center distribution at about 80 nm) and show strong adhesivity to wall painting pigments. In addition, the anti-UV absorption ability of the nanohybrids is also a significant advantage. More importantly, the Ca(OH)2 is fully carbonated into a stable CaCO3 crystal phase “calcite” because of the GQD, which is crucial in wall painting consolidation. As a result, the graphene-enhanced nanohybrids show superior conservation efficiency compared to as-synthesized Ca(OH)2 and commercial Ca(OH)2 materials. The result opens a new direction for protecting cultural heritage using the newly emerging 2D nanomaterials.
AB - Wall paintings as the highly valuable treasure have been facing severe damaging problems over the years. Ca(OH)2 as a promising material to protect them has been studied for more than a decade. However, the synthesis methods are still costly, complex, and usually, involve an organic solvent. In addition, problems such as large particle size (>150 nm), slow and weak carbonation, and low consolidation strength for wall paintings remain unsolved. This study demonstrates an unprecedented concept of wall painting protection enabled by graphene-enhanced nanomaterials through strategically synthesizing Ca(OH)2/graphene quantum dot (GQD) nanohybrids using a facile and economic aqueous method. The nanohybrids are uniform and small (center distribution at about 80 nm) and show strong adhesivity to wall painting pigments. In addition, the anti-UV absorption ability of the nanohybrids is also a significant advantage. More importantly, the Ca(OH)2 is fully carbonated into a stable CaCO3 crystal phase “calcite” because of the GQD, which is crucial in wall painting consolidation. As a result, the graphene-enhanced nanohybrids show superior conservation efficiency compared to as-synthesized Ca(OH)2 and commercial Ca(OH)2 materials. The result opens a new direction for protecting cultural heritage using the newly emerging 2D nanomaterials.
KW - Ca(OH)
KW - consolidation
KW - graphene quantum dots
KW - hybrid nanomaterials
KW - wall painting protection
UR - http://www.scopus.com/inward/record.url?scp=85053477468&partnerID=8YFLogxK
U2 - 10.1002/adfm.201803872
DO - 10.1002/adfm.201803872
M3 - 文章
AN - SCOPUS:85053477468
SN - 1616-301X
VL - 28
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 44
M1 - 1803872
ER -