干旱区生态环境知识资源中心(Arid): X-ray Microspectroscopy and Ptychography on Nanoscale Structures in Rock Varnish

Arid

DOI	10.1021/acs.jpcc.1c03600
	X-ray Microspectroscopy and Ptychography on Nanoscale Structures in Rock Varnish
	Foerster, Jan-David; Bykova, Iuliia; Macholdt, Dorothea S.; Jochum, Klaus Peter; Kappl, Michael; Kilcoyne, A. L. David; Mueller, Maren; Sorowka, Antje; Weber, Bettina; Weigand, Markus; Schuetz, Gisela; Andreae, Meinrat O.; Poehlker, Christopher
通讯作者	Forster, JD ; Pohlker, C (corresponding author), Max Planck Inst Chem, Biogeochem Dept, D-55128 Mainz, Germany. ; Forster, JD ; Pohlker, C (corresponding author), Max Planck Inst MPI Chem, Multiphase Chem Dept, D-55128 Mainz, Germany.
来源期刊	JOURNAL OF PHYSICAL CHEMISTRY C
ISSN	1932-7447
EISSN	1932-7455
出版年	2021
卷号	125 期号:41 页码:22684-22697
英文摘要	X-ray microspectroscopy is a powerful analytical method in geoscientific and environmental research as it provides a unique combination of nanoscale imaging with high spectroscopic sensitivity at relatively low beam-related sample damage. In this study, classical scanning transmission soft X-ray microscopy (STXM) with X-ray absorption spectroscopy and the recently established soft X-ray ptychography are applied to the analysis of selected rock varnish samples from urban and arid desert environments. X-ray ptychography enhances the spatial resolution relative to STXM by up to 1 order of magnitude. With its high chemical sensitivity, it can resolve nanoscale differences in valence states of the key varnish elements manganese (Mn) and iron. Our results emphasize the complex nanoarchitecture of rock varnish as well as the diverse mineralogy of the Mn oxy-hydroxide matrix and its embedded dust grains. In contrast to the fast-growing urban varnish, the slow-growing arid desert varnish revealed a remarkable nanoscale stratification of alternating Mn valence states, providing hints on the layer-wise and still enigmatic growth process.
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000711035400031
WOS关键词	DESERT VARNISH ; CLUSTER-ANALYSIS ; NEGEV DESERT ; RESOLUTION ; SPECTROMICROSCOPY ; SPECTROSCOPY ; MICROSCOPY ; DRYLANDS ; ORIGIN ; PLEISTOCENE
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
来源机构	King Saud University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368099
作者单位	[Bykova, Iuliia; Schuetz, Gisela] MPI Intelligent Syst, Modern Magnet Syst Dept, D-70569 Stuttgart, Germany; [Bykova, Iuliia] Paul Scherrer Inst, Photon Sci Div, Lab Micro & Nanotechnol, Villigen, Switzerland; [Foerster, Jan-David; Macholdt, Dorothea S.; Jochum, Klaus Peter; Andreae, Meinrat O.; Poehlker, Christopher] Max Planck Inst Chem, Biogeochem Dept, D-55128 Mainz, Germany; [Macholdt, Dorothea S.; Jochum, Klaus Peter] Max Planck Inst Chem, Climate Geochem Dept, D-55128 Mainz, Germany; [Kappl, Michael] Max Planck Inst Polymer Res, Phys Interfaces Dept, D-55128 Mainz, Germany; [Kilcoyne, A. L. David; Mueller, Maren] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA; [Sorowka, Antje] Max Planck Inst Chem, Particle Chem Dept, D-55128 Mainz, Germany; [Foerster, Jan-David; Weber, Bettina; Poehlker, Christopher] Max Planck Inst MPI Chem, Multiphase Chem Dept, D-55128 Mainz, Germany; [Weber, Bettina] Karl Franzens Univ Graz, Inst Biol, Div Plant Sci, Graz, Austria; [Weigand, Markus] Helmh...
推荐引用方式 GB/T 7714	Foerster, Jan-David,Bykova, Iuliia,Macholdt, Dorothea S.,et al. X-ray Microspectroscopy and Ptychography on Nanoscale Structures in Rock Varnish[J]. King Saud University,2021,125(41):22684-22697.
APA	Foerster, Jan-David.,Bykova, Iuliia.,Macholdt, Dorothea S..,Jochum, Klaus Peter.,Kappl, Michael.,...&Poehlker, Christopher.(2021).X-ray Microspectroscopy and Ptychography on Nanoscale Structures in Rock Varnish.JOURNAL OF PHYSICAL CHEMISTRY C,125(41),22684-22697.
MLA	Foerster, Jan-David,et al."X-ray Microspectroscopy and Ptychography on Nanoscale Structures in Rock Varnish".JOURNAL OF PHYSICAL CHEMISTRY C 125.41(2021):22684-22697.