Comment on “Investigations on HONO formation from photolysis of adsorbed HNO3 on quartz glass surfaces” by S. Laufs and J. Kleffmann, Phys. Chem. Chem. Phys., 2016, 18, 9616

文献信息

发布日期 2018-11-27
DOI 10.1039/C8CP04497J
影响因子 3.676
作者

Michael N. Sullivan


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摘要

Laufs and Kleffmann observed that HNO3 surface photolysis rates resemble that of HNO3 in the gas phase after depositing HNO3 in air at ∼50% relative humidity onto quartz glass surfaces. They questioned the dry HNO3 coverage (1.1 × 1014 molecules per cm2 after depositing ∼15 mTorr HNO3 on silica at 0% humidity) used to derive our previously published HNO3 near-UV surface absorption cross sections. We directly determined the HNO3 coverage on a quartz surface using a quartz crystal microbalance (QCM). A similar HNO3 monolayer coverage obtained by QCM confirms that our estimated HNO3 coverage is reasonable. We also obtained an NO2 quantum yield from the 308 nm HNO3 photolysis on fused silica. In this Comment, we provide an explanation of the variance in HNO3 surface photolysis rates by clarifying the effects arising from important differences in the HNO3 coverage on quartz/silica in the presence of humidity versus those in the absence of humidity.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
自引率: 10.3%
年发文量: 3036

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.

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