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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 271 records · Page 15
All sourcesNASA NTRSDOE OSTI
DOE OSTI2022

Transport and Retention of Particulate Organic Matter in Sand: Lab Experiments and Modelling

Flow-through reactor (FTR) experiments were conducted at three different downward vertical flow rates to study the transport and retention of particulate organic matter (Chlorella powder) in riverbed sediments. This data package includes data files (.csv) regarding effluent collected from the FTRs during the experiments (time, duration, volume of each sample collection; concentration of nonreactive bromide tracer; concentration of suspended Chlorella determined by absorbance measurements) and sediment (sand) slices collected from the FTRs after the experiments (mass of Chlorella retained in 1 cm depth intervals determined by loss-on-ignition method). More detailed descriptions of data are provided in the data dictionary, and detailed methods are available in the associated MSc thesis listed in ‘Related References.’ The data dictionary and file level meta data (FLMD) are included in the data package as both .csv and .xlsx files. This data package also includes timelapse videos (.mp4) of the experiments, and modelling scripts associated with the experiments. The modelling scripts are included as MATLAB ‘live scripts’ (.mlx, which can be run using MATLAB), and are also included as .pdf and .html files with output plots included (which can be viewed without a MATLAB license and installation). The data files and modelling scripts are organized into a .zip folder for each of the three FTR experiments (three flow rates).

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2023

Solute chemistry for streams draining geomorphic features and varying land cover gradients in the East River watershed, Colorado

This dataset contains solute chemistry data and GPS coordinates for surface water samples collected in the East River watershed in the Elk and West Elk Ranges of Colorado from August 3rd through August 11th, 2022. Samples were collected from streams and groundwater seeps as part of a comprehensive analysis within the watershed of how different geomorphic features (such as landslides and rock glaciers) along with variations in land cover (such as the presence of vegetation) affect stream water quality in this Rocky Mountain headwater environment. This dataset includes concentrations of the following in a single csv file: fluoride, chloride, sulfate, nitrate, calcium, potassium, magnesium, sodium, silicon, and total organic carbon (TOC). All concentrations are reported in mg/L. The sulfate data in this version have been updated to account for an earlier ion chromatograph instrument method error whereby sulfate and bromide peaks overlapped in calibration solution samples, biasing calculated sulfate concentrations low by 30-50%. Sulfate data reported herein are from a re-run of the samples performed in December 2024 using a corrected instrument method. All samples were stored under refrigerated conditions and filtered on initial collection.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2026

Lowering oxygen evolution overpotential via morphology control of NiO x nanocatalysts

NiO x nanocatalysts with two distinct morphologies, nano-spindles and nano-plates, were synthesized and evaluated for oxygen evolution reaction (OER) performance. Spindle-like NiO x was prepared via a hydrothermal reaction of nickel nitrate and urea with cetyltrimethylammonium bromide as a surfactant at 120 °C for 24 h, forming Ni(OH) 2 -based intermediates that were subsequently calcined at 300 °C for 3 h. In contrast, platelet-like Ni(OH) 2 nanocrystals were obtained using nickel(II) acetate and KOH at 180 °C for 24 h, followed by calcination at 400 °C or 500 °C for 4 h to yield NiO x nano-plates. The NiO x nano-spindles exhibited an OER overpotential of 395 mV at 10 mA/cm 2 , whereas the NiO x nano-plates annealed at 400 °C and 500 °C showed overpotentials of 565 mV and 474 mV at 10 mA/cm 2 , respectively. Structural characterization and X-ray photoemission spectroscopy indicate these differences arise from morphology-dependent surface structures that govern catalytic activity.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SnBr4 by Materials Project

SnBr4 is Silicon tetrafluoride-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four tin(iv) bromide molecules. Sn4+ is bonded in a tetrahedral geometry to four Br1- atoms. All Sn–Br bond lengths are 2.48 Å. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Sn4+ atom. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Sn4+ atom. In the third Br1- site, Br1- is bonded in a single-bond geometry to one Sn4+ atom. In the fourth Br1- site, Br1- is bonded in a single-bond geometry to one Sn4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CBrN by Materials Project

BrCN is Cyanogen Chloride structured and crystallizes in the orthorhombic Pmmn space group. The structure is zero-dimensional and consists of two cyanogen bromide molecules. C4+ is bonded in a linear geometry to one N3- and one Br1- atom. The C–N bond length is 1.17 Å. The C–Br bond length is 1.79 Å. N3- is bonded in a single-bond geometry to one C4+ atom. Br1- is bonded in a distorted single-bond geometry to one C4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SBr2O by Materials Project

SOBr2 crystallizes in the orthorhombic Pca2_1 space group. The structure is zero-dimensional and consists of eight thionyl bromide molecules. S2- is bonded in a distorted single-bond geometry to one O2- and two Br2+ atoms. The S–O bond length is 1.46 Å. There are one shorter (2.28 Å) and one longer (2.31 Å) S–Br bond lengths. O2- is bonded in a single-bond geometry to one S2- atom. There are two inequivalent Br2+ sites. In the first Br2+ site, Br2+ is bonded in a single-bond geometry to one S2- atom. In the second Br2+ site, Br2+ is bonded in a single-bond geometry to one S2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MnH8(BrO2)2 by Materials Project

MnH8(O2Br)2 is alpha U structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four manganese(ii) bromide tetrahydrate molecules. Mn2+ is bonded in an octahedral geometry to four O2- and two Br1- atoms. There are a spread of Mn–O bond distances ranging from 2.19–2.29 Å. There are one shorter (2.66 Å) and one longer (2.70 Å) Mn–Br bond lengths. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Mn2+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Mn2+ and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted water-like geometry to one Mn2+ and two H1+ atoms. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one Mn2+ and two H1+ atoms. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Mn2+ atom. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Mn2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SeBr by Materials Project

SeBr crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four selenium bromide (se2br2) molecules. there are two inequivalent Se sites. In the first Se site, Se is bonded in a water-like geometry to one Se and one Br atom. The Se–Se bond length is 2.24 Å. The Se–Br bond length is 2.42 Å. In the second Se site, Se is bonded in a water-like geometry to one Se and one Br atom. The Se–Br bond length is 2.44 Å. There are two inequivalent Br sites. In the first Br site, Br is bonded in a single-bond geometry to one Se atom. In the second Br site, Br is bonded in a single-bond geometry to one Se atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hg3As8(S4Br3)2 by Materials Project

(HgBr2)2HgAs8(S4Br)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four mercuric bromide molecules and two HgAs8(S4Br)2 clusters. In each HgAs8(S4Br)2 cluster, Hg2+ is bonded in a distorted linear geometry to four S2- and two equivalent Br1- atoms. There are two shorter (3.29 Å) and two longer (3.35 Å) Hg–S bond lengths. Both Hg–Br bond lengths are 2.50 Å. There are four inequivalent As2+ sites. In the first As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. Both As–S bond lengths are 2.27 Å. In the second As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. Both As–S bond lengths are 2.26 Å. In the third As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. Both As–S bond lengths are 2.26 Å. In the fourth As2+ site, As2+ is bonded in an L-shaped geometry to two S2- atoms. There are one shorter (2.26 Å) and one longer (2.28 Å) As–S bond lengths. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a 2-coordinate geometry to two As2+ atoms. In the second S2- site, S2- is bonded in a distorted water-like geometry to two As2+ atoms. In the third S2- site, S2- is bonded in a distorted water-like geometry to one Hg2+ and two As2+ atoms. In the fourth S2- site, S2- is bonded in a distorted water-like geometry to one Hg2+ and two As2+ atoms. Br1- is bonded in a single-bond geometry to one Hg2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AlSBr3N by Materials Project

AlBr3NS crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of two 1,3,2,4-dithiadiazetidine molecules and four aluminum bromide molecules.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AlSeBr3N by Materials Project

AlBr3NSe crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of two 1,3,2,4-diselenadiazetidine molecules and four aluminum bromide molecules.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SeBr by Materials Project

SeBr crystallizes in the orthorhombic Aea2 space group. The structure is zero-dimensional and consists of four selenium bromide (se2br2) molecules. Se is bonded in a distorted water-like geometry to one Se and one Br atom. The Se–Se bond length is 2.27 Å. The Se–Br bond length is 2.42 Å. Br is bonded in a single-bond geometry to one Se atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe3C8(Br2N)8 by Materials Project

(FeBr4)2FeC6(NBr)6(BrCN)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two cyanogen bromide molecules, two tetrabromoiron molecules, and one FeC6(NBr)6 cluster. In the FeC6(NBr)6 cluster, Fe+2.67+ is bonded in an octahedral geometry to six N3- atoms. There are a spread of Fe–N bond distances ranging from 1.93–1.95 Å. There are three inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a linear geometry to one N3- and one Br1- atom. The C–N bond length is 1.17 Å. The C–Br bond length is 1.79 Å. In the second C4+ site, C4+ is bonded in a linear geometry to one N3- and one Br1- atom. The C–N bond length is 1.17 Å. The C–Br bond length is 1.79 Å. In the third C4+ site, C4+ is bonded in a linear geometry to one N3- and one Br1- atom. The C–N bond length is 1.17 Å. The C–Br bond length is 1.79 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a linear geometry to one Fe+2.67+ and one C4+ atom. In the second N3- site, N3- is bonded in a linear geometry to one Fe+2.67+ and one C4+ atom. In the third N3- site, N3- is bonded in a linear geometry to one Fe+2.67+ and one C4+ atom. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one C4+ atom. In the second Br1- site, Br1- is bonded in a single-bond geometry to one C4+ atom. In the third Br1- site, Br1- is bonded in a distorted single-bond geometry to one C4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on P2H24PdC12(BrN3)2 by Materials Project

PdBr2(PH12(C2N)3)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four 1,3,5-triaza-7-phosphaadamantane molecules and two palladium(ii) bromide molecules.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HgH4C4(Br2N)2 by Materials Project

HgBr2(HC2N)2(HBr)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of eight aziridine molecules, eight hydrobromic acid molecules, and four mercuric bromide molecules.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NiBr2 by Materials Project

NiBr2 is Cyanogen Chloride-derived structured and crystallizes in the trigonal R-3m space group. The structure is zero-dimensional and consists of three nickel bromide molecules. Ni2+ is bonded in a linear geometry to two equivalent Br1- atoms. Both Ni–Br bond lengths are 2.17 Å. Br1- is bonded in a single-bond geometry to one Ni2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu8NiSb3S13N6 by Materials Project

NiN6Cu8Sb3S13 crystallizes in the cubic F-43c space group. The structure is three-dimensional and consists of eight nickel ammine bromide molecules and one Cu8Sb3S13 framework. In the Cu8Sb3S13 framework, there are two inequivalent Cu+2.12+ sites. In the first Cu+2.12+ site, Cu+2.12+ is bonded to four S2- atoms to form distorted CuS4 trigonal pyramids that share corners with three equivalent SbS4 tetrahedra, corners with four CuS4 trigonal pyramids, and edges with three equivalent CuS4 trigonal pyramids. There are three shorter (2.26 Å) and one longer (2.60 Å) Cu–S bond lengths. In the second Cu+2.12+ site, Cu+2.12+ is bonded to four S2- atoms to form distorted CuS4 trigonal pyramids that share corners with three equivalent SbS4 tetrahedra, corners with four CuS4 trigonal pyramids, and edges with three equivalent CuS4 trigonal pyramids. There are three shorter (2.26 Å) and one longer (2.58 Å) Cu–S bond lengths. Sb5+ is bonded to four equivalent S2- atoms to form SbS4 tetrahedra that share corners with eight CuS4 trigonal pyramids. All Sb–S bond lengths are 2.42 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 3-coordinate geometry to two Cu+2.12+ and one Sb5+ atom. In the second S2- site, S2- is bonded in a body-centered cubic geometry to eight Cu+2.12+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hg2SBr4N2O3 by Materials Project

(HgBr2)2N2SO3 crystallizes in the monoclinic P2_1/m space group. The structure is zero-dimensional and consists of four ammonia molecules, four mercuric bromide molecules, and two sulfur trioxide molecules.

36 MATERIALS SCIENCE↗