In situ chemical probing of the electrode–electrolyte interface by ToF-SIMS

Liu, Bingwen; Yu, Xiao‐Ying; Zhu, Zihua; Hua, Xin; Yang, Li; Wang, Zhaoying

doi:10.1039/c3lc50971k

Cited by 68 publications

(97 citation statements)

References 17 publications

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“…This condition has been successfully used in our recent biofilm and single cell research [21,27]. Figure 5 compares the positive and negative ion spectra of a living biofilm sample using a 200 nm 0.20 pA Bi + beam (a typical condition used in our initial papers [11][12][13][14][15][16][17]) and a 500 nm 0.36 pA + beam appeared similar to the negative secondary ion spectrum using the 200 nm 0.20 pA Bi + beam. However, the signal intensity of the former also showed a~two orders of magnitude improvement.…”

Section: Signal Improvement Of Biofilm and Cell Samplesmentioning

confidence: 97%

“…In most of our previous studies, a 25 keV Bi + beam was used as the primary ion beam, and the beam size was focused tõ 200 nm diameter with a current of 0.2-1.0 pA [11,[13][14][15]. The Bi + beam was chosen because it was the most abundant primary ion species, and it could provide the highest current with our instrument (IONTOF V) [29,30].…”

Section: Beam Damage Evaluationmentioning

confidence: 99%

“…However, initial studies reported detection of only negative molecular ions [11][12][13][14][15][16][17] because the signals of the positive ion spectra were too weak to be meaningful. In addition, although negative molecular ions could be successfully analyzed, their signal intensity was not strong [16,17].…”

mentioning

confidence: 99%

“…The SiN membrane surface can be modified and the liquid in the cell can be changed, allowing various liquid-solid interfaces to be studied. As a result, in situ liquid SIMS has been successfully applied to analysis of live biofilms [16,17], protein-modified Au nanoparticles [13], electrochemical reactions [15,19], and the formation of solid-electrolyte interface in a Li-ion battery [18].…”

mentioning

confidence: 99%

“…However, as a high vacuum technique, it has been traditionally used to analyze solid samples. In situ liquid SIMS was developed in the last several years and one of its unique capabilities is the analysis of liquid-solid and liquid-vacuum interfaces [11][12][13][14][15][16][17][18]. To enable in situ liquid SIMS measurement, a vacuum-compatible device named system for analysis at the liquid-vacuum interface (SALVI) was developed [11,12], where a liquid of interest can be sealed in a microfluidic channel under a thin (e.g., 100 nm) silicon nitride (SiN) membrane.…”

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confidence: 99%

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Improving the Molecular Ion Signal Intensity for In Situ Liquid SIMS Analysis

Zhou

Yao

Ding

et al. 2016

J. Am. Soc. Mass Spectrom.

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Abstract. In situ liquid secondary ion mass spectrometry (SIMS) enabled by system for analysis at the liquid vacuum interface (SALVI) has proven to be a promising new tool to provide molecular information at solid-liquid and liquid-vacuum interfaces. However, the initial data showed that useful signals in positive ion spectra are too weak to be meaningful in most cases. In addition, it is difficult to obtain strong negative molecular ion signals when m/z>200. These two drawbacks have been the biggest obstacle towards practical use of this new analytical approach. In this study, we report that strong and reliable positive and negative molecular signals are achievable after optimizing the SIMS experimental conditions. Four model systems, including a 1,8-diazabicycloundec-7-ene (DBU)-base switchable ionic liquid, a live Shewanella oneidensis biofilm, a hydrated mammalian epithelia cell, and an electrolyte popularly used in Li ion batteries were studied. A signal enhancement of about two orders of magnitude was obtained in comparison with non-optimized conditions. Therefore, molecular ion signal intensity has become very acceptable for use of in situ liquid SIMS to study solid-liquid and liquid-vacuum interfaces.

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Section: Signal Improvement Of Biofilm and Cell Samplesmentioning

confidence: 97%

Section: Beam Damage Evaluationmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Improving the Molecular Ion Signal Intensity for In Situ Liquid SIMS Analysis

Zhou

Yao

Ding

et al. 2016

J. Am. Soc. Mass Spectrom.

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Nanowires for In Situ Characterization

2023

Nanowire Energy Storage Devices

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In Situ Characterization of Interfaces Relevant for Efficient Photoinduced Reactions

Supplie

May

Brückner

et al. 2017

Adv Materials Inter

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which he pioneered and established. In general, interfaces do not only determine electronic properties of the final device; their atomic order also highly affects growth kinetics and defect formation. Moreover, the design of solid-liquid and hybrid interfaces determines their chemical reactivity and stability. In situ monitoring of interface preparation, formation, and interfacial reactions thus promises efficient process control. Paired with a detailed understanding of interface formation mechanisms, however, the true power of in situ control is to allow for specific modification and tuning of interface formation for the device of choice. There are several excellent reviews on in situ approaches covering wide ranges of materials from basic science to applications as well as varieties of preparation and analysis techniques. [2][3][4][5][6][7][8][9][10][11] As indicated in Figure 1, this review will be focused on in situ control over interfaces of materials that are relevant for photoinduced reactions in high-efficiency solar energy conversion and sensing applications with in situ control of semiconductor/polymer/ biological interfaces. We will restrict the techniques to realistic and complex, non-ultrahigh-vacuum (UHV) ambient, where in situ control is most demandingbut also highly desired. The more complex the interfacial reactions are, the more important is the in situ characterization. Ex situ approaches can contribute to an indirect understanding of interface formation, but to understand and, finally, control the dynamic processes taking place, real-time measurements are appropriate. The challenge, we are facing, is twofold: On the one hand, increased interaction with the surrounding ambient causes higher complexity. Yet at the same time, it decreases the number of applicable techniques. On the other hand, those techniques are often elaborate and not necessarily easy to interpret. In a nutshell, we will discuss four main topics:(i) Surface preparation during growth of structures for highefficiency solar energy conversion: World-record conversion efficiencies in both photovoltaics [12,13] and solar water splitting [14] are achieved with multijunction solar cells based on epitaxial III/V compound semiconductor structures. We will discuss in situ controlled preparation Solar energy conversion and photoinduced bioactive sensors are representing topical scientific fields, where interfaces play a decisive role for efficient applications. The key to specifically tune these interfaces is a precise knowledge of interfacial structures and their formation on the microscopic, preferably atomic scale. Gaining thorough insight into interfacial reactions, however, is particularly challenging in relevant complex chemical environment. This review introduces a spectrum of material systems with corresponding interfaces significant for efficient applications in energy conversion and sensor technologies. It highlights appropriate analysis techniques capable of monitoring critical physicochemical reactions in situ during non-vacuu...

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In situ chemical probing of the electrode–electrolyte interface by ToF-SIMS

Cited by 68 publications

References 17 publications

Improving the Molecular Ion Signal Intensity for In Situ Liquid SIMS Analysis

Improving the Molecular Ion Signal Intensity for In Situ Liquid SIMS Analysis

Nanowires for In Situ Characterization

In Situ Characterization of Interfaces Relevant for Efficient Photoinduced Reactions

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