Combined XRD and XAS

Hanson, Jonathan C.; Cámara, Antonio López; Barrio, Laura; Estrella, Michael; Gong, Zhengliang; Si, Rui; Khalid, Syed; Wang, Q.

doi:10.1016/j.nima.2010.11.076

Cited by 16 publications

(9 citation statements)

References 11 publications

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“…While beamline 5.3.1 is no longer available for footprinting experiments, and beamline 3.2.1 is shared with other user programs, ALS beamline 3.3.1 is available for development of a dedicated X-ray footprinting facility. We plan to install the focusing mirror previously utilized at NSLS beamline X18A [21], and generously provided to our group for incorporation into the 3.3.1 beamline. This mirror has a 31.6 mm sagittal radius with an overall size of 700 mm long, 100 mm wide, and 32 mm high.…”

Section: Future Directionsmentioning

confidence: 99%

Recent Advances in X-Ray Hydroxyl Radical Footprinting at the Advanced Light Source Synchrotron

Morton

Gupta

Kim

et al. 2019

PPL

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Background: Synchrotron hydroxyl radical footprinting is a relatively new structural method used to investigate structural features and conformational changes of nucleic acids and proteins in the solution state. It was originally developed at the National Synchrotron Light Source at Brookhaven National Laboratory in the late nineties, and more recently, has been established at the Advanced Light Source at Lawrence Berkeley National Laboratory. The instrumentation for this method is an active area of development, and includes methods to increase dose to the samples while implementing high-throughput sample delivery methods. Conclusion: Improving instrumentation to irradiate biological samples in real time using a sample droplet generator and inline fluorescence monitoring to rapidly determine dose response curves for samples will significantly increase the range of biological problems that can be investigated using synchrotron hydroxyl radical footprinting.

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Section: Future Directionsmentioning

confidence: 99%

Recent Advances in X-Ray Hydroxyl Radical Footprinting at the Advanced Light Source Synchrotron

Morton

Gupta

Kim

et al. 2019

PPL

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“…The complementarities between these methods and the advantages of combining them to obtain a complete structural view have been widely discussed. [3,8,9] Since hard X-rays can penetrate through the sample, its environment and the window material, XRD, XAS and XES are especially well-suited for in situ and operando characterization of catalysts. Thus, important structural information can be gained under working conditions of catalysts with setups similar to those used in the academic and industrial laboratories.…”

Section: Introductionmentioning

confidence: 99%

Scientific Opportunities for Heterogeneous Catalysis Research at the SuperXAS and SNBL Beam Lines

Abdala

Safonova²,

Wiker³

et al. 2012

Chimia

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In this short review, we describe the complementary experimental capabilities for catalysis research at two beam lines available to the Swiss community, SuperXAS at SLS (Swiss Light Source, Villigen) and SNBL (Swiss Norwegian Beam lines) at ESRF (European Synchrotron Radiation Facility, Grenoble). Over the years, these two facilities have been developed to provide powerful techniques for structural studies under in situ and operando conditions. These techniques, X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), and X-ray emission spectroscopy (XES) in combination with Raman or infrared spectroscopy provide new avenues for structure-performance studies of catalysts. Several exemplary studies are used to demonstrate the capability of these facilities.

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“…An increment of incident x-ray energy occurs. Both XANES (X-ray Absorption Near-Edge Structure)[436] and EXAFS (Extended X-ray Absorption Fine Structure) are regions of the spectrum obtained from XAS[437]. EXAFS is a beneficial technique for the analysis of the solid-state material to give insights about the chemical and electronic structure of active sites found inside the materials and other information related to the neighbouring atoms such as their numbers, chemical nature and distance[438].…”

mentioning

confidence: 99%

Insight on water remediation application using magnetic nanomaterials and biosorbents

Maksoud

Elgarahy

Farrell

et al. 2020

Coordination Chemistry Reviews

221

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Adsorption to date is the most effective and utilized technology globally to remove several pollutants in wastewater. In this approach, many adsorbents have been synthesized, tested and used for the elimination and separation of the contaminants such as radionuclides, heavy metals, dyes and pharmaceutical compounds both at lab and industrial scale. However, there are many challenges to adsorption processes such as reducing the high cost, through means of separation of suspending adsorbents to be used again, as well as the ease to synthesize. Two methods that have shown promising results and gained significant interest is that of magnetic nanomaterials and biosorbents due to their effective, safe, eco-friendly, low cost and low-energy intensive material properties. Magnetic nanomaterials act as efficient adsorbents due to their ease of removal of contaminants from wastewater using an applied magnetic field but also their advantageous surface charge and redox activity characteristics. On the other hand, biosorbents have a synergistic effect with their efficient adsorption capacity to remove contaminants, high abundance and participation in waste minimization, helping alleviate ecological and environmental problems. This review highlights, discusses and reports on the state-of-the-art of these two promising routes to adsorption and provides indications as to what are the optimum materials for utilization and insight into their efficiency, reusability and practicality for the removal of pollutants from wastewater streams. Some of the main material focuses are zero-valent iron, iron oxides, spinel ferrites, natural and waste-based biosorbents.

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Combined XRD and XAS

Cited by 16 publications

References 11 publications

Recent Advances in X-Ray Hydroxyl Radical Footprinting at the Advanced Light Source Synchrotron

Recent Advances in X-Ray Hydroxyl Radical Footprinting at the Advanced Light Source Synchrotron

Scientific Opportunities for Heterogeneous Catalysis Research at the SuperXAS and SNBL Beam Lines

Insight on water remediation application using magnetic nanomaterials and biosorbents

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