Zheming Wang

Organic enrichment of sea spray aerosols: from the air-water interface to spray generation

Lead Institution

Montana State University

Principal Investigator

Robert Walker

Project type

Large-Scale EMSL Research

This proposal describes coupled studies intended to identify and quantify the origin of organic solutes in sea spray aerosols (SSA) and to predict the consequences of aerosol organic enrichment on…

Crystal Perfection in Cadmium Zinc Telluride Radiation Detectors

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Mary Bliss

Project type

Exploratory Research

This effort is to collect high resolution x-ray diffraction data to correlate with thermally stimulated current measurements. The samples are cadmium zinc telluride which have the potential to be…

The Role of Interfacial Processes on Mineral Transformations in Wet Supercritical CO2

Lead Institution

Washington State University

Principal Investigator

Andrew Felmy

Project type

Exploratory Research

We propose a comprehensive experimental and theoretical investigation of the role of interfacial water and CO2 on the energies, mechanisms, and rates of reactivity of a series of orthosilicate and…

Influence of Mass transfer on Bioavailablility and Kinetic Rate of U(VI) Biotransformation (Liu NABIR-U, PNNL Scope # 45386. Liu NABIR.)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Chongxuan Liu

Project type

Exploratory Research

Enhance our understanding on the mechanisms that influence uranium bioavailability and kinetic rate of biotransformation in contaminated sediments.

Building a Predictive Understanding of Particle-Based Mineral Growth

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

Project type

Large-Scale EMSL Research

Traditional models of mineral formation through monomer-by-monomer addition have been challenged by recent evidence for crystallization through the addition of "particles," ranging from…

Development of an integrated atomic force / fluorescence microscope at EMSL

Lead Institution

The Ohio State University

Principal Investigator

Brian Lower

Project type

Large-Scale EMSL Research

We propose to develop a new spectroscopic/microscopic capability at EMSL that combines atomic force microscopy (AFM) with fluorescence microscopy allowing for simultaneous force and fluorescence…

An Optical Spectroscopy Investigation of Environmental Effects on Uranium Oxyfluoride Particles

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Khris Olsen

Project type

Limited Scope

Uranium oxyfluoride (UO2F2) is the first metastable hydrolysis product of uranium hexafluoride (UF6), an important chemical in the uranium separation process as well as a trace impurity in WF6, which…

Influence of Microscopic Mass Transfer on the Reactivity and Stability of Uranium

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Chongxuan Liu

Project type

Exploratory Research

This proposed project will investigate microscopic U(VI) mass transfer under influence of biogeochemical reactions in representative Hanford U(VI)-contaminated sediments. Recent research by our group…

Fundamental Understanding of Nucleation Processes to Assess Solution Stability and Phase Growth and Genesis

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Gregg Lumetta

Many activities in the nuclear industry are areas of concern for public safety. The leakage of nuclear waste from Hanford storage tanks poses a threat to public health, and the retrieval and…

Understanding Particle Generation and the Risk of Occupational Exposure and Environmental Release of Nanoparticles During Processing of Nanocomposite Materials

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Daniel Gaspar

Project type

Exploratory Research

Understanding the potential impacts of nanotechnology on human health and the environment requires an understanding of the potential for release and exposure of potentially toxic nanomaterials during…

Experimental Capabilities and Fundamental Science for Geologic Carbon Sequestration: The PNNL In Situ Supercritical Suite (IS3)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kevin Rosso

Project type

Large-Scale EMSL Research

This Science Theme proposal requests EMSL access for investigators in the In Situ Supercritical Suite (IS3) component of PNNL's Carbon Sequestration Initiative (CSI). The CSI is a multi-million…

Experimental Capabilities and Fundamental Science for Geologic Carbon Sequestration: The PNNL In Situ Supercritical Suite (IS3)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

John Loring

Project type

Large-Scale EMSL Research

This Science Theme proposal requests EMSL access for investigators in the In Situ Supercritical Suite (IS3) component of PNNL's Carbon Sequestration Initiative (CSI). The CSI is a multi-million…

The Transformation of Tetrahedral to Octahedral Coordination in Anions of Interest in High-Level Tank Waste

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jian-zhi Hu

Project type

Exploratory Research

We propose to use nuclear magnetic resonance (NMR), Raman and Fourier transform-infrared (FT-IR) spectroscopy in combination with computational modeling to study the conversion of soluble tetrahedral…

Structure and Catalytic Activity of Supported Early Transition Metal Oxide Clusters (Kay's BES/Chemical Physics-Catalysis WBS0502 of Peden's BES-Chemical Transformations at Complex Interfaces, PNNL Scope #47319)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Zdenek Dohnalek

Project type

Exploratory Research

Current commercial heterogeneous catalysts are structurally and chemically complex and measurements on them can seldom be interpreted with atomic-level precision. This is especially so for supported…

The Role of Interfacial Processes on Mineral Transformations in Wet Supercritical CO2

Lead Institution

Washington State University

Principal Investigator

Andrew Felmy

Project type

Large-Scale EMSL Research

We propose a comprehensive experimental and theoretical investigation of the role of interfacial water and CO2 on the energies, mechanisms, and rates of reactivity of a series of orthosilicate and…

In Situ Measurement of Organic Contaminants in CO2-Water Solutions Using Near-Infrared Spectroscopy

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Christopher Thompson

Geologic carbon sequestration (GCS) is considered to be one of the more viable options for reducing anthropogenic emissions of greenhouse gases. At sites where depleted oil reservoirs or coal beds…

Structure and Chemistry at the Buried Solid/Aqueous Solution Interfaces with Advanced Surface Nonlinear Spectroscopy

Lead Institution

Fudan University

Principal Investigator

Hongfei Wang

Solid/aqueous solution interface are ubiquitous and important in energy and environmental research. We propose to investigate benchmark systems in the interface sciences to find novel applications of…

photo-luminescence of nano-oxides

Lead Institution

Motorola

Principal Investigator

Yong Liang

Project type

Exploratory Research

to determine the photo-luminescence property and the lifetime of photo-excited electrons and holes. Need to conduct PL measurements (both regular and time-resolved) on SrTiO3 and Cu2O samples.

A Joint Experimental and Computational Investigations of U(VI) Excited States in Uranyl Compounds Relevant to U(VI) Remediation At DOE Sites

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Zheming Wang

Project type

Large-Scale EMSL Research

Actinides widely exist in natural resources such as mines, atmosphere, and underground water, and in man-made radioactive nuclear wastes from nuclear power plants and weapons production. Particularly…

Role of Microenvironments and Transition Zones in Subsurface Reactive Contaminant Transport

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James McKinley

This is a renewal proposal for a previous collaborative effort between the PNNL Scientific Focus Area (SFA) and EMSL. The research proposed will resolve critical Hanford and basic subsurface science…

Fundamental Understanding of Nucleation Processes to Assess Solution Stability and Phase Growth and Genesis

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Gregg Lumetta

Many activities in the nuclear industry are areas of concern for public safety. The leakage of nuclear waste from Hanford storage tanks poses a threat to public health, and the retrieval and…

Influence of Speciation on the Transport of U(VI) through Hanford Sediments

Lead Institution

Oak Ridge National Laboratory

Principal Investigator

Melanie Mayes

Project type

Exploratory Research

Uranium(VI) in the subsurface at the Department of Energy's (DOE) Hanford site poses a significant risk to the quality of the Columbia River and to future populations. Coupled hydrological and…

Role of Microenvironments and Transition Zones in Field scale microbial ecology and biogeochemistry

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James McKinley

Project type

Exploratory Research

This is a renewal proposal for a previous collaborative effort between the PNNL Scientific Focus Area (SFA) and EMSL. The research proposed will resolve critical Hanford and basic subsurface science…

in Operando Characterization of Contact Catalysts at Mesoscale Distances

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Robert Weber

We propose to measure and model the dipole-dipole interactions that shift and quench luminescence spectra of ligand-to-metal charge transfer bands of contact catalysts containing transition metal in…

The Transformation of Tetrahedral to Octahedral Coordination in Anions of Interest in High-Level Tank Waste

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jian-zhi Hu

Project type

Large-Scale EMSL Research

We propose to use nuclear magnetic resonance (NMR), Raman and Fourier transform-infrared (FT-IR) spectroscopy in combination with computational modeling to study the conversion of soluble tetrahedral…

EMSL Science Overview

Zheming Wang

Projects

Organic enrichment of sea spray aerosols: from the air-water interface to spray generation

Crystal Perfection in Cadmium Zinc Telluride Radiation Detectors

The Role of Interfacial Processes on Mineral Transformations in Wet Supercritical CO2

Influence of Mass transfer on Bioavailablility and Kinetic Rate of U(VI) Biotransformation (Liu NABIR-U, PNNL Scope # 45386. Liu NABIR.)

Building a Predictive Understanding of Particle-Based Mineral Growth

Development of an integrated atomic force / fluorescence microscope at EMSL

An Optical Spectroscopy Investigation of Environmental Effects on Uranium Oxyfluoride Particles

Influence of Microscopic Mass Transfer on the Reactivity and Stability of Uranium

Fundamental Understanding of Nucleation Processes to Assess Solution Stability and Phase Growth and Genesis

Understanding Particle Generation and the Risk of Occupational Exposure and Environmental Release of Nanoparticles During Processing of Nanocomposite Materials

Experimental Capabilities and Fundamental Science for Geologic Carbon Sequestration: The PNNL In Situ Supercritical Suite (IS3)

Experimental Capabilities and Fundamental Science for Geologic Carbon Sequestration: The PNNL In Situ Supercritical Suite (IS3)

The Transformation of Tetrahedral to Octahedral Coordination in Anions of Interest in High-Level Tank Waste

Structure and Catalytic Activity of Supported Early Transition Metal Oxide Clusters (Kay's BES/Chemical Physics-Catalysis WBS0502 of Peden's BES-Chemical Transformations at Complex Interfaces, PNNL Scope #47319)

The Role of Interfacial Processes on Mineral Transformations in Wet Supercritical CO2

In Situ Measurement of Organic Contaminants in CO2-Water Solutions Using Near-Infrared Spectroscopy

Structure and Chemistry at the Buried Solid/Aqueous Solution Interfaces with Advanced Surface Nonlinear Spectroscopy

photo-luminescence of nano-oxides

A Joint Experimental and Computational Investigations of U(VI) Excited States in Uranyl Compounds Relevant to U(VI) Remediation At DOE Sites

Role of Microenvironments and Transition Zones in Subsurface Reactive Contaminant Transport

Fundamental Understanding of Nucleation Processes to Assess Solution Stability and Phase Growth and Genesis

Influence of Speciation on the Transport of U(VI) through Hanford Sediments

Role of Microenvironments and Transition Zones in Field scale microbial ecology and biogeochemistry

in Operando Characterization of Contact Catalysts at Mesoscale Distances

The Transformation of Tetrahedral to Octahedral Coordination in Anions of Interest in High-Level Tank Waste