# Fileset

[la5c03503_si_001.pdf](https://mdr.nims.go.jp/filesets/8c2ceab1-cfc6-4870-900e-c7a87ba549b5/download)

## Creator

[Nobuyuki Sakai](https://orcid.org/0000-0002-9395-6751), [Ritesh Uppuluri](https://orcid.org/0000-0003-0595-7963), [Nobuo Iyi](https://orcid.org/0000-0001-5547-7031), [Yasuo Ebina](https://orcid.org/0000-0003-3471-9825), [Renzhi Ma](https://orcid.org/0000-0001-7126-2006), [Takayoshi Sasaki](https://orcid.org/0000-0002-2872-0427)

## Rights

[Creative Commons BY Attribution 4.0 International](https://creativecommons.org/licenses/by/4.0/)

## Other metadata

[Ammonia Uptake from Ambient Air by Protonic Layered Metal Oxide as a Cause of the Gradual Degradation of Its Swelling Reactivity](https://mdr.nims.go.jp/datasets/508fc034-9d39-44db-a9ae-80c35c3fdcc6)

## Fulltext

Supporting Information S1 Supporting Information  Ammonia Uptake from Ambient Air by Protonic Layered Metal Oxide as a Cause of the Gradual Degradation of Its Swelling Reactivity Nobuyuki Sakai,* Ritesh Uppuluri, Nobuo Iyi, Yasuo Ebina, Renzhi Ma, and Takayoshi Sasaki Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan * Corresponding author. E-mail: sakai.nobuyuki@nims.go.jp   Figure S1. SEM image of HCa2Nb3O10·1.5H2O crystals. Scale bar indicates 50 μm.   S2  Figure S2. (a) Normal and (b-g) polarized optical microscopy images of HCa2Nb3O10·1.5H2O crystals after exposure to ambient air for (a, b) 0, (c) 1, (d) 3, (e) 7, (f) 14, (g) 21, and (h) 49 days. Scale bars represent 500 μm.