A mechanistic study of the electrochemical oxygen reduction on the model semiconductor n-Ge(100) by ATR-IR and DFT
文献信息
Simantini Nayak, P. Ulrich Biedermann, Martin Stratmann, Andreas Erbe
The electrochemical oxygen reduction reaction (ORR) on a n-Ge(100) surface in 0.1 M HClO4 was investigated in situ and operando using a combination of attenuated total reflection infrared (ATR-IR) spectroscopy and density functional (DFT) calculations. The vibrational modes of the detected intermediates were assigned based on DFT calculations of solvated model clusters such as Ge-bound superoxides and peroxides. ATR-IR shows the Ge-bound superoxide with a transition dipole moment oriented at (28 ± 10)° with respect to the surface normal. At slightly negative potentials, the surface-bound peroxide is identified by an OOH bending mode as a further intermediate, oriented at a similar angle. At strongly negative potentials, a surface-bound perchlorate is found. The findings indicate a multistep mechanism of the ORR. The reaction is furthermore coupled with the hydrogen evolution reaction (HER).
相关文献
Two-parameter monitoring in a lab-on-valve manifold, applied to intracellular H2O2 measurements
Ilkka Lähdesmäki, Petr Chocholouš, Andrea D. Carroll, Judy Anderson, Peter S. Rabinovitch, Jaromir Ruzicka
DOI: 10.1039/B822070K
Label-free fibre optic Raman spectroscopy with bounded simplex-structured matrix factorization for the serial study of serum in amyotrophic lateral sclerosis
Visakan Kadirkamanathan, Martin R. Turner, Andrea Malaspina, John C. C. Day
DOI: 10.1039/D2AN00936F
Detection ofdrug-induced cellular changes using confocal Raman spectroscopy on patterned single-cell biosensors
Ryan Buckmaster, Fareid Asphahani, Myo Thein, Jian Xu, Miqin Zhang
DOI: 10.1039/B900420C
Adenosine detection by using gold nanoparticles and designed aptamer sequences
Fan Li, Juan Zhang, Xuni Cao, Lihua Wang, Di Li, Shiping Song, Bangce Ye, Chunhai Fan
DOI: 10.1039/B900900K
An electroactive fiber optic chip for spectroelectrochemical characterization of ultra-thin redox-active films
Brooke M. Beam, Neal R. Armstrong, Sergio B. Mendes
DOI: 10.1039/B814338B
A SERS and fluorescence dual-channel microfluidic droplet platform for exploring telomerase activity at the single-cell level
Guohua Qi, Xing Du, Xuan Yi, Minmin Wang, Hongyan Zhu, Dan Sun
DOI: 10.1039/D2AN01459A
Fluorescence identification of arthropathic calcium pyrophosphate single crystals using alizarin red S and a xanthene dipicolylamine ZnII complex
Waralee Srinarawat, Ruedee Hemstapat, Tulyapruek Tawonsawatruk, Nisa Patikarnmonthon, Itaru Hamachi, Akio Ojida, Jirarut Wongkongkatep
DOI: 10.1039/D2AN01257J
Correction: In situ synthesis of chiral AuNCs with aggregation-induced emission using glutathione and ceria precursor nanosheets for glutathione biosensing
Guoxing Wu, Alaa Eldin A. Salem, Lei Su, Bing Shi Li
DOI: 10.1039/D2AN90082C
Fast polymer fingerprinting using flowing afterglow atmospheric pressure glow discharge mass spectrometry
Matthias C. Jecklin, Gerardo Gamez, Renato Zenobi
DOI: 10.1039/B819560A
Ultrasensitive Pb2+ detection based on fluorescence resonance energy transfer (FRET) between quantum dots and gold nanoparticles
Xin Wang, Xiangqun Guo
DOI: 10.1039/B822744F
您可能还喜欢
6-氯-2H-1,4-苯并噁嗪-3(4H)-酮(CAS号:7652-29-1)应用于哪些行业?
6-氯-2H-1,4-苯并噁嗪-3(4H)-酮主要应用于医药、农药和聚合物等领域。在医药领域,该化合物可用于合成抗菌药物;在农药领域,可用作杀虫剂的中间体;在聚...
活性氧化铝(CAS号:1302-74-5)应用于哪些行业?
活性氧化铝广泛应用于医药、聚合物、传感器、半导体和催化等领域。在医药行业,活性氧化铝用作吸附剂和干燥剂,有助于去除杂质和水分。在聚合物行业,它用作增白剂和抗结块...
什么是硅胶(CAS号:112926-00-8)?
硅胶(Silica gel, pptd.,cryst.-free)是一种无定形、多孔的硅酸盐材料,主要成分为二氧化硅(SiO₂)。其结构由硅氧四面体构成,通过酸...
二乙基甲基一氢硅烷(CAS号:760-32-7)的主要用途是什么?
二乙基甲基一氢硅烷主要用于有机合成、表面处理以及作为溶剂。它还被用作合成其他硅烷化合物的原料,以及在涂料、粘合剂和密封剂中的应用。
在合成中是否有N-花生四烯酰基甘氨酸(CAS号:179113-91-8)的替代品?
在合成过程中,可以考虑使用类似结构的化合物作为替代品,例如N-亚油酰基甘氨酸或N-花生二烯酰基甘氨酸。这些替代品在结构上有类似的双键位置,但可能具有不同的物理化...
在合成中是否有1-(4-甲氧基苯基)丙烷-1,2-二酮(CAS号:10557-27-4)的替代品?
在合成过程中,可以考虑使用类似结构的化合物作为替代品,例如1-(3-甲氧基苯基)丙烷-1,2-二酮或1-(4-羟基苯基)丙烷-1,2-二酮。这些替代品具有相似的...
N-(4-氨基-1-苄基-3-羟基-5-苯基戊基)-3-甲基-2-(2-氧代四氢嘧啶-1-基)-丁酰胺 5-氧代吡咯烷-2-甲酸(CAS号:192726-06-0)通常如何合成?
该化合物通常通过一系列复杂的有机合成步骤获得。首先,通过芳香族化合物的羟基化反应获得羟基化产物,然后通过酰化反应形成酰胺中间体,最后通过环化反应得到目标产物。常...
(S)-2-氨基-3-喹啉-2-丙酸(CAS号:161513-46-8)的市场或研究趋势如何?
该化合物作为生物活性化合物,尤其是在药物化学领域表现出色。近年来,随着对新型抗炎、抗病毒和抗癌药物的研究增加,其市场和研究趋势持续增长。此外,其在神经科学领域的...
核黄素磷酸钠(CAS号:130-40-5)安全吗?
核黄素磷酸钠在常规使用条件下安全,但高剂量可能引起刺激性反应。操作时需佩戴防护手套和护目镜,避免吸入粉尘。若接触皮肤或眼睛,应立即用大量清水冲洗。急救时需根据接...
盐酸丙胺卡因杂质A(EP) 标准品(CAS号:19281-31-3)通常如何合成?
盐酸丙胺卡因杂质A(EP) 标准品可通过重氮化反应和随后的酰胺化反应合成。首先,利用氯化反应将苯环上的氢原子转化为氯原子,然后通过芳香族重氮化反应引入氨基,最后...
来源期刊
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










![1-Naphthalenesulfonic acid, 2-[(2-hydroxy-1-naphthalenyl)azo]-, bariumsalt (2:1) structure 1-Naphthalenesulfonic acid, 2-[(2-hydroxy-1-naphthalenyl)azo]-, bariumsalt (2:1) structure](https://cnstatic.chemtradehub.com/structs/110/1103-38-4-0b33.webp)



