A5027400685- Electrocatalysts for Energy Conversion
- Thermoregulation and physiological responses
- Advanced Photocatalysis Techniques
- 2D Materials and Applications
- Wound Healing and Treatments
- Coronary Interventions and Diagnostics
- Advanced battery technologies research
- Burn Injury Management and Outcomes
- Electrochemical Analysis and Applications
- Thermal Regulation in Medicine
- Infrared Thermography in Medicine
- Energetic Materials and Combustion
- Advanced oxidation water treatment
- Cardiovascular Health and Disease Prevention
- Cerebrovascular and Carotid Artery Diseases
- Peripheral Artery Disease Management
- Advanced Battery Materials and Technologies
- TiO2 Photocatalysis and Solar Cells
- Laser-induced spectroscopy and plasma
- Infection Control and Ventilation
- Venous Thromboembolism Diagnosis and Management
- Forensic Entomology and Diptera Studies
- Elasticity and Material Modeling
- Solar-Powered Water Purification Methods
- Perovskite Materials and Applications
Stanford University
2019-2023
Lawrence Berkeley National Laboratory
2023
University of St. Thomas - Minnesota
2015-2018
Electrochemical synthesis of hydrogen peroxide (H2O2) via two-electron water oxidation reaction (2e-WOR) is an ideal process for delocalized production cleaning and other applications. Previously reported catalysts have limited activity selectivity, imposing a bottleneck broad adoption this technology. We identify ZnO as new stable, nontoxic, active, selective catalyst 2e-WOR to generate H2O2. Using density functional theory calculations, we propose that the (1010) facet effective confirm...
Two-electron water oxidation (2e–WOR) is a promising route toward efficient production of valuable product in H2O2. Recent attention has focused on developing new electrocatalysts for 2e–WOR, but the role electrolyte species determining selectivity and promoting 2e–WOR not been established. Here, we use electroanalytical experiments to confirm HCO3– as selective redox catalyst. We find minimal differences H2O2 consumption pathways among common electrolytes, indicating that promote...
Monolayer MoS2 is a promising semiconductor to overcome the physical dimension limits of microelectronic devices. Understanding thermochemical stability essential since these devices generate heat and are susceptible oxidative environments. Herein, promoting effect molybdenum oxides (MoO x ) particles on thermal oxidation monolayers shown by employing operando X-ray absorption spectroscopy, ex situ scanning electron microscopy photoelectron spectroscopy. The study demonstrates that chemical...
Boron has been regarded as a promising high-energy fuel due to its high volumetric and gravimetric heating values. However, it remains challenging for boron attain theoretical heat of combustion because the existence native oxide layer melting boiling temperatures that delay ignition inhibit complete combustion. is known be enhanced by physically adding fluorine-containing chemicals, such fluoropolymer or metal fluorides, remove surface oxides. Herein, we chemically functionalize particles...
Boron (B), with high energy density and low cost, is regarded as a promising fuel for energetic applications such propellants. However, achieving efficient combustion of B challenging due to its delayed ignition slow combustion. Additives are needed promote the particles by providing heat, gases, and/or fluorine-containing species. In this study, we demonstrated that mixture graphene oxide (GO) graphite fluoride (GtF) new effective additive particles. We compared performance B/GO/GtF...
Electrochemical production of H2O2 from water is a promising route toward improving the value and utility electrolysis. Though several studies have demonstrated superior performance bicarbonate electrolytes (especially concentrated potassium bicarbonate, 2 M KHCO3), none focused on systematically engineering electrolyte to further improve production. Here, we use chronoamperometry investigate impact carbonate mole fractions, total dissolved inorganic carbon (DIC) concentration, cations...
There remains continued interest in improving the advanced water oxidation process [e.g., ultraviolet (UV)/hydrogen peroxide (H2O2)] for more efficient and environmentally friendly wastewater treatment. Here, we report design, fabrication, performance of graphene oxide (GO, on top)/nickel-doped iron oxyhydroxide (Ni:FeOOH, shell)/silicon nanowires (SiNWs, core) as a new multifunctional photocatalyst degradation common pollutants like polystyrene methylene blue through enhancing hydroxyl...
Numerical simulation methods have been applied to calculations of heat transfer within living tissue. Traditionally, those node-based when a whole-body analysis. With the increased capacity modern computational hardware and software, it is now possible routinely solve continuous thermal model human body based on finite-element technique. Such is, for first time, described implemented. The specifies material properties various regions (head, torso, arms, hands, legs, feet) tissue types...
The two-electron water oxidation reaction (2e– WOR) provides an option for on-site production of the valuable chemical hydrogen peroxide (H2O2). A major challenge 2e– WOR is need to improve its selectivity toward H2O2 over O2 through oxygen evolution reaction. Electrolyte engineering has shown great promise in improving and rates H2O2. However, experimental efforts optimizing electrolyte only yield results at discrete conditions, which does not provide a complete picture performance entire...
Hemodynamics and the interaction between components of cardiovascular system are complex involve a structural/fluid flow interaction. During cardiac cycle, changes to vascular pressure induce compliant response in vessels as they cyclically stretch relax. The compliance influences fluid throughout system. is influenced by disease state artery, particular, plaque layer can reduce compliance. In order properly quantify fluid-structural response, it essential consider whether tissue surrounding...
Abstract Forming pits on molybdenum disulfide (MoS 2 ) monolayers is desirable for (opto)electrical, catalytic, and biological applications. Thermal oxidation a potentially scalable method to generate monolayer MoS , are assumed preferentially form around undercoordinated sites, such as sulfur vacancies. However, studies thermal of have not considered the effect adventitious carbon (C) that ubiquitous interacts with oxygen at elevated temperatures. Herein, C pit formation during studied. The...
Electrochemical oxidation of water and electrolyte ions to produce oxygen, hydrogen peroxide, peroxysulfate in acid alkaline electrolytes at the surface manganese-doped titanium dioxide thin films.
A comprehensive investigation is provided on the flow of air within a positive-pressure operating room during simulated surgery. The surgery made use an over-body patient-warming blanket whose purpose to maintain patient temperatures. One issue be studied was whether forced-air unit with caused airflow disturbances at surgical site that would otherwise not occur without blanket. In study, measurements from room, including dimensions, flowrates, temperatures, and positions potential blockages...
Numerical calculations have been performed to quantify the importance of plaque removal on blood flow. The artery under consideration is popliteal which susceptible lesions. An orbital artherectomy device was used partially remove a calcified layer. Measurements taken before and after treatment were in idealized pressure losses through lesion determined. It found that by atherectomy increases flowrate artery. At same time, there major reduction loss lesion. After treatment, systolic drop 2.5...
A new approach is taken to estimating the time of death based on cadaver temperatures. The predictions are obtained by using numerical simulation that can be performed in a case-by-case scenario. Such method enables time-of-death for persons any size and weight thermal environment. An added advantage it not dependent upon an identification individual tissue layers regions. Rather, homogeneous model used, results agree closely with prior estimation methods also published case study. Among...
Generating pits and thereby active edge sites of molybdenum disulfide (MoS 2 ) monolayers is desirable for many electrochemical catalytic reactions including hydrogen evolution reaction (HER). Thermal oxidation one the potentially scalable facile methods to effectively create on MoS monolayers. Therefore understanding thermal mechanism very important precisely control generation -based electrocatalysts. To date, are assumed be favorably formed at undercoordinated such as sulfur (S) vacancies...