1. Institute of Environmental Engineering ETH Zurich Stefano‐Franscini‐Platz 3 Zürich 8093 Switzerland
2. Laboratory for Advanced Analytical Technologies Swiss Federal Laboratories for Materials Science and Technology Empa, Überlandstrasse 129 Dübendorf 8600 Switzerland
3. Laboratory for Building Energy Materials and Components Swiss Federal Laboratories for Materials Science and Technology Empa, Überlandstrasse 129 Dübendorf 8600 Switzerland
4. Department of Chemistry University of Fribourg Chemin du Musée 9 Fribourg CH‐1700 Switzerland
5. Swiss Light Source Paul Scherrer Institute Villigen CH‐5232 Switzerland
6. Electron Microscopy Center Swiss Federal Laboratories for Materials Science and Technology Empa; Überlandstrasse 129 Dübendorf CH‐8600 Switzerland
7. State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 China
8. Department of Chemistry University of Zurich Winterthurerstrasse 190 Zürich CH‐8057 Switzerland
9. Cellulose and Wood Materials Laboratory Swiss Federal Laboratories for Materials Science and Technology Empa, Überlandstrasse 129 Dübendorf 8600 Switzerland
10. School of Materials Science and Engineering Shandong University Jinan 250061 China