Pub Date : 2026-02-04DOI: 10.1016/j.apsusc.2026.166141
Hanqi Sun, Li Sun, Yong Wang, Wenjing Li, Jiayang Li, Jiawen Cui, Ke Wang, Yihe Zhang
{"title":"Multi-metal Prussian blue analogs with 3D ion channels for high-capacity aqueous zinc-ion battery cathode","authors":"Hanqi Sun, Li Sun, Yong Wang, Wenjing Li, Jiayang Li, Jiawen Cui, Ke Wang, Yihe Zhang","doi":"10.1016/j.apsusc.2026.166141","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.166141","url":null,"abstract":"","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"90 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-04DOI: 10.1016/j.apsusc.2026.166208
Ahmad Alem, Yining Huang, Nicole Wechner, Michael Feuchter, Matheus A. Tunes, Christoph Rameshan, Stefan Spirk, Christine Bandl
Surface functionalization of carbon plays a key role in tailoring their interfacial properties for applications in energy storage, energy conversion, structural composites, etc. In this work, radio frequency (RF) O2-plasma was employed to tailor the surface chemistry of C-felts. The influence of plasma power and treatment duration was studied. X-ray photoelectron spectroscopy (XPS) revealed that oxygen incorporation increases upon plasma treatment with powers up to 100 W, decreasing the C/O ratio significantly, followed by partial recovery at higher powers due to ion-induced etching. High-resolution C1s and O1s spectra were deconvoluted using a stoichiometric correlation strategy to improve peak assignments. Despite the inherent complexity of O1s spectra due to peak overlap and symmetric features, a consistent interpretation was achieved. Hence, by providing a stoichiometry-driven framework we improve the accuracy and consistency of XPS analysis by correlating the deconvolution of high-resolution C1s and O1s spectra. Raman spectroscopy confirmed the progressive increase in structural defects, with higher plasma powers and longer exposures. Scanning electron microscopy (SEM) revealed pronounced surface roughening and fiber etching after plasma. Overall, this work provides a deeper insight into surface modification of carbon felt utilizing O2-plasma and establishes a stoichiometric framework for interpreting complex XPS spectra of oxygen-functionalized carbons.
{"title":"Radio frequency O2-plasma treatment of carbon felts: stoichiometric insight into C1s and O1s XPS with correlated Raman and SEM characterization","authors":"Ahmad Alem, Yining Huang, Nicole Wechner, Michael Feuchter, Matheus A. Tunes, Christoph Rameshan, Stefan Spirk, Christine Bandl","doi":"10.1016/j.apsusc.2026.166208","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.166208","url":null,"abstract":"Surface functionalization of carbon plays a key role in tailoring their interfacial properties for applications in energy storage, energy conversion, structural composites, etc. In this work, radio frequency (RF) O<sub>2</sub>-plasma was employed to tailor the surface chemistry of C-felts. The influence of plasma power and treatment duration was studied. X-ray photoelectron spectroscopy (XPS) revealed that oxygen incorporation increases upon plasma treatment with powers up to 100 W, decreasing the C/O ratio significantly, followed by partial recovery at higher powers due to ion-induced etching. High-resolution C1s and O1s spectra were deconvoluted using a stoichiometric correlation strategy to improve peak assignments. Despite the inherent complexity of O1s spectra due to peak overlap and symmetric features, a consistent interpretation was achieved. Hence, by providing a stoichiometry-driven framework we improve the accuracy and consistency of XPS analysis by correlating the deconvolution of high-resolution C1s and O1s spectra. Raman spectroscopy confirmed the progressive increase in structural defects, with higher plasma powers and longer exposures. Scanning electron microscopy (SEM) revealed pronounced surface roughening and fiber etching after plasma. Overall, this work provides a deeper insight into surface modification of carbon felt utilizing O<sub>2</sub>-plasma and establishes a stoichiometric framework for interpreting complex XPS spectra of oxygen-functionalized carbons.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"89 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nitrophenols and nitroanilines represent a series of organic pollutants that pose a significant environmental threat. Nevertheless, their catalytic reduction products — aminophenols and phenylenediamine — are regarded as valuable industrial intermediates. Therefore, identifying a highly active and cost-effective catalyst is essential for achieving the efficient catalytic conversion of nitrophenol and nitroaniline. Here, we employed a liquid-phase reduction approach to synthesize silver catalysts with varied morphologies and abundant defects (stacking faults and microporosity) through a rapid self-assembly process induced by gelatin. We found that the conformation of small polypeptide chains in gelatin can be regulated via controlled temperature gradients during synthesis, thereby directing the self-assembly of silver nanostructures into 2D nanosheets and 3D spherical nanoflowers. Spherical aberration transmission electron microscopy revealed the presence of abundant stacking faults on the surface of the silver catalyst. Therefore, the silver catalysts exhibited excellent catalytic activity for the catalytic reduction of 4-nitrophenol (4-NP), 2-nitrophenol (2-NP), and p-nitroaniline (p-NA), with reaction rate constants of 1.20 × 10−2 s−1, 1.04 × 10−2 s−1, and 1.23 × 10−2 s−1, respectively. Furthermore, a detection limit of 50 nM for 4-NP was achieved using AgNSs-modified glassy carbon electrodes.
{"title":"Stacking faults-rich silver catalysts synthesized via self-assembly for the efficient catalytic reduction of nitrophenols/nitroanilines","authors":"Zhengqiu Chen, Junyu Chen, Huaming Mao, Jungang Yin, Yu Ren, Wei Dai, Shuanglong Zhao, Hongwei Yang","doi":"10.1016/j.apsusc.2026.166205","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.166205","url":null,"abstract":"Nitrophenols and nitroanilines represent a series of organic pollutants that pose a significant environmental threat. Nevertheless, their catalytic reduction products — aminophenols and phenylenediamine — are regarded as valuable industrial intermediates. Therefore, identifying a highly active and cost-effective catalyst is essential for achieving the efficient catalytic conversion of nitrophenol and nitroaniline. Here, we employed a liquid-phase reduction approach to synthesize silver catalysts with varied morphologies and abundant defects (stacking faults and microporosity) through a rapid self-assembly process induced by gelatin. We found that the conformation of small polypeptide chains in gelatin can be regulated via controlled temperature gradients during synthesis, thereby directing the self-assembly of silver nanostructures into 2D nanosheets and 3D spherical nanoflowers. Spherical aberration transmission electron microscopy revealed the presence of abundant stacking faults on the surface of the silver catalyst. Therefore, the silver catalysts exhibited excellent catalytic activity for the catalytic reduction of 4-nitrophenol (4-NP), 2-nitrophenol (2-NP), and p-nitroaniline (p-NA), with reaction rate constants of 1.20 × 10<sup>−2</sup> s<sup>−1</sup>, 1.04 × 10<sup>−2</sup> s<sup>−1</sup>, and 1.23 × 10<sup>−2</sup> s<sup>−1</sup>, respectively. Furthermore, a detection limit of 50 nM for 4-NP was achieved using AgNSs-modified glassy carbon electrodes.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"27 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-03DOI: 10.1016/j.apsusc.2026.166189
Hanzhong Cui, Yuxi Chen, Meilin Zhang, Zhou Yang, Luyu Ji, Jin Zhang
{"title":"Capillary slit induced orientation and microstructure control of graphene film","authors":"Hanzhong Cui, Yuxi Chen, Meilin Zhang, Zhou Yang, Luyu Ji, Jin Zhang","doi":"10.1016/j.apsusc.2026.166189","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.166189","url":null,"abstract":"","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"223 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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