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Title: On the unusual amber coloration of nanoporous sol-gel processed Al-doped silica glass: An experimental study

Abstract

Silica is the most abundant component on the earth’s surface. It plays an important role in many natural processes. Silica is also a critical material for a wide range of technical applications such as in optics and electronics. In this work, we discuss our recent experimental observation of the unusual amber coloration of aluminum doped sol-gel glass that has not been reported in the past. We characterized Al-doped sol-gel glasses, prepared at different sintering temperature, using a plethora of techniques to investigate the origin of this unusual coloration and to understand their structural and chemical properties. We used these experimental results to test a number of possible coloring mechanisms. The results suggested this coloring is likely caused by temperature-dependent aluminum-associated defect centers associated with different amorphous-to-crystalline ratios of the annealed sol-gel silica glass structures.

Authors:
ORCiD logo [1];  [1];  [2];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [2]
  1. School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
  2. Mechanical & Aerospace Engineering, West Virginia University, Morgantown, WV, 26506 – 6106, USA
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); NSF Scalable Nanomanufacturing Program; National Science Foundation (NSF)
OSTI Identifier:
1624485
Grant/Contract Number:  
AC02-05CH11231; AC02-06CH11357; CBET-1449383, 1358137; 1343726
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
Science & Technology - Other Topics

Citation Formats

Chang, Alvin, He, Yujuan, Arango, Maria A. Torres, Wang, Maoyu, Ren, Yang, Feng, Zhenxing, Chang, Chih-Hung, and Sierros, Konstantinos A.. On the unusual amber coloration of nanoporous sol-gel processed Al-doped silica glass: An experimental study. United States: N. p., 2019. Web. https://doi.org/10.1038/s41598-019-48917-4.
Chang, Alvin, He, Yujuan, Arango, Maria A. Torres, Wang, Maoyu, Ren, Yang, Feng, Zhenxing, Chang, Chih-Hung, & Sierros, Konstantinos A.. On the unusual amber coloration of nanoporous sol-gel processed Al-doped silica glass: An experimental study. United States. https://doi.org/10.1038/s41598-019-48917-4
Chang, Alvin, He, Yujuan, Arango, Maria A. Torres, Wang, Maoyu, Ren, Yang, Feng, Zhenxing, Chang, Chih-Hung, and Sierros, Konstantinos A.. Wed . "On the unusual amber coloration of nanoporous sol-gel processed Al-doped silica glass: An experimental study". United States. https://doi.org/10.1038/s41598-019-48917-4. https://www.osti.gov/servlets/purl/1624485.
@article{osti_1624485,
title = {On the unusual amber coloration of nanoporous sol-gel processed Al-doped silica glass: An experimental study},
author = {Chang, Alvin and He, Yujuan and Arango, Maria A. Torres and Wang, Maoyu and Ren, Yang and Feng, Zhenxing and Chang, Chih-Hung and Sierros, Konstantinos A.},
abstractNote = {Silica is the most abundant component on the earth’s surface. It plays an important role in many natural processes. Silica is also a critical material for a wide range of technical applications such as in optics and electronics. In this work, we discuss our recent experimental observation of the unusual amber coloration of aluminum doped sol-gel glass that has not been reported in the past. We characterized Al-doped sol-gel glasses, prepared at different sintering temperature, using a plethora of techniques to investigate the origin of this unusual coloration and to understand their structural and chemical properties. We used these experimental results to test a number of possible coloring mechanisms. The results suggested this coloring is likely caused by temperature-dependent aluminum-associated defect centers associated with different amorphous-to-crystalline ratios of the annealed sol-gel silica glass structures.},
doi = {10.1038/s41598-019-48917-4},
journal = {Scientific Reports},
number = 1,
volume = 9,
place = {United States},
year = {2019},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Figure 1 Figure 1: (Top) Al-doped silica sol-gel glass samples prepared with and without annealing exhibiting temperature-dependent clear and amber coloring. (Bottom) Undoped silica glass is depicted for comparison purposes.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.