The role of ceramic and glass science research in meeting societal challenges: Report from an <scp>NSF</scp>‐sponsored workshop

Faber, K. T.; Asefa, Tewodros; Backhaus‐Ricoult, M.; Brow, Richard K.; Chan, Julia Y.; Dillon, Shen J.; Fahrenholtz, William G.; Finnis, Michael W.; Garay, Javier E.; Garcı́a, R. Edwin; Gogotsi, Yury; Haile, Sossina M.; Halloran, John W.; Hu, Juejun; Huang, Liping; Jacobsen, S. D.; Lara‐Curzio, Edgar; LeBeau, James M.; Lee, William; Levi, Carlos G.; Levin, Igor; Lewis, Jennifer A.; Lipkin, Don M.; Kathy, Lu; Luo, Jian; Maria, Jon Paul; Martin, Lane W.; Martin, Steve; Messing, Gary L.; Navrotsky, Alexandra; Padture, Nitin P.; Randall, Clive A.; Rohrer, Gregory S.; Rosenflanz, Anatoly; Schaedler, Tobias A.; Schlom, Darrell G.; Sehirlioglu, Alp; Stevenson, Adam J.; Tani, Toshihiko; Tikare, Veena; Trolier‐McKinstry, Susan; Wang, Hong; Yildiz, Bilge

doi:10.1111/jace.14881

Cited by 22 publications

(9 citation statements)

References 276 publications

(533 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Though growth in the number of 2D materials has been quite rapid in the past decade, a complete understanding of the associated stability and properties of each new 2D material is lacking . It is paramount that an extensive understanding of the properties of 2D materials is established, thus allowing changes in chemistry, processing, or external fields to easily tune specific properties of the material …”

Section: Introductionmentioning

confidence: 99%

“…13 It is paramount that an extensive understanding of the properties of 2D materials is established, thus allowing changes in chemistry, processing, or external fields to easily tune specific properties of the material. 14 Though graphene and graphene oxide nanosheets have recently garnered much attention, the majority of 2D nanosheets are inorganic, such as clays, or materials composed of different transition metals and group 16 elements (ie, oxygen, sulfur, selenium). Indeed, 2D transition metal dichalcogenides (TMDs, eg, MoS 2 ) have a wide range of applications, including energy generation and storage, catalysis, and as active materials in sensors, supercapacitors, optoelectronics, etc.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Cation deficiency associated with the chemical exfoliation of lithium cobalt oxide

2019

Self Cite

View full text Add to dashboard Cite

Compositional changes associated with the chemical exfoliation of lithium cobalt oxide, a layered transition metal oxide, are discussed. Starting from a layered bulk structure, lithium cobalt oxide can undergo chemical exfoliation through a two‐step method: treatment with a protic acid, then treatment with tetramethylammonium hydroxide (this intercalates the layered structure and yields exfoliated nanosheets). This work provides an in‐depth analysis of compositional and structural changes occurring to the powder upon the first step to exfoliation, treatment with acid, revealing variations in vacancies and valence changes depending on the conditions used. Through coupled analysis of X‐ray photoelectron spectroscopy, X‐ray diffraction, UV‐Vis absorption spectroscopy, and inductively coupled plasma‐optical emission spectroscopy data, we illustrate that both lithium and cobalt ions are diffusing out the structure along with the dissolution of full unit cells. As such, nanosheets accessed from the bulk by this exfoliation process should not be considered simply as divisions of the original unit cell. This work provides fundamental insights on the stability of LiCoO2 and the exfoliation of layered transition metal oxides, beyond the access of individual nanosheets, and is vital to determining structure‐property relationships of chemically exfoliated nanosheets (eg, changes in valency which dictate catalytic activity, magnetic susceptibility, etc).

show abstract

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Cation deficiency associated with the chemical exfoliation of lithium cobalt oxide

2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Knowledge about the chemical and physical stability of MgO‐based nanostructures is of key interest for their processing, for example, for the production of ceramics, and for their use as materials components at elevated temperatures, such as in catalysis . The interaction of MgO particles with pristine, adsorbate free surfaces with gaseous or liquid water has been studied on particle ensembles in different size regimes .…”

Section: Introductionmentioning

confidence: 99%

“…processing, for example, for the production of ceramics, [13][14][15][16] and for their use as materials components at elevated temperatures, such as in catalysis. [17][18][19][20][21][22][23][24] The interaction of MgO particles with pristine, adsorbate free surfaces with gaseous or liquid water has been studied on particle ensembles in different size regimes.…”

mentioning

confidence: 99%

Thin water films and particle morphology evolution in nanocrystalline MgO

et al. 2018

View full text Add to dashboard Cite

A key question in the field of ceramics and catalysis is how and to what extent residual water in the reactive environment of a metal oxide particle powder affects particle coarsening and morphology. With X‐ray Diffraction (XRD) and Transmission Electron Microscopy (TEM), we investigated annealing‐induced morphology changes on powders of MgO nanocubes in different gaseous H2O environments. The use of such a model system for particle powders enabled us to describe how adsorbed water that originates from short exposure to air determines the evolution of MgO grain size, morphology, and microstructure. While cubic nanoparticles with a predominant abundance of (100) surface planes retain their shape after annealing to T = 1173 K under continuous pumping with a base pressure of water p(H2O) = 10−5 mbar, higher water partial pressures promote mass transport on the surfaces and across interfaces of such particle systems. This leads to substantial growth and intergrowth of particles and simultaneously favors the formation of step edges and shallow protrusions on terraces. The mass transfer is promoted by thin films of water providing a two‐dimensional solvent for Mg2+ ion hydration. In addition, we obtained direct evidence for hydroxylation‐induced stabilization of (110) faces and step edges of the grain surfaces.

show abstract

“…In the last decade, the addition of graphene-based nanostructures to ceramics has attracted the attention of the scientific community [ 8 , 9 ] pursuing reinforcement effects in the resulting composites or enhanced functional properties such as electrical conductivity. From the applications point of view, the improvement of the mechanical properties of ceramics is crucial for structural purposes [ 10 , 11 ], while the achievement of a high electrical conductivity opens the door to advanced machining techniques such as electro discharge machining (EDM) to allow the fabrication of miniaturized and complex ceramic shapes for parts or tools [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Critical Influence of the Processing Route on the Mechanical Properties of Zirconia Composites with Graphene Nanoplatelets

et al. 2020

View full text Add to dashboard Cite

Graphene-based nanostructures, used as potential reinforcement in ceramic composites, have a great tendency to agglomerate. This requires the use of homogenization techniques during the powder processing, posing the need to evaluate how these techniques affect the microstructure and the mechanical properties of the resulting composites. The influence of the processing route on the properties of 3YTZP (3 mol % yttria tetragonal zirconia polycrystals) ceramic composites with 10 vol % cost-effective GNP (graphene nanoplatelets) has been addressed. Four different powder processing routines combining ultrasonic powder agitation (UA) and planetary ball milling (PBM) in wet and dry media have been used and all the composites were densified by spark plasma sintering (SPS). The mechanical properties at room temperature in the macroscale have been assessed by Vickers indentations, four-point bending tests and the impulse-echo technique, while instrumented indentation was used to measure the hardness and Young’s modulus at the nanoscale. The application of dry-PBM enhances greatly the mechanical and electrical isotropy of the composites, slightly increases the hardness and lowers the elastic modulus, independently of the application of UA. The combination of UA and dry-PBM enhances the flexure strength by 50%, which is desirable for structural applications.

show abstract

The role of ceramic and glass science research in meeting societal challenges: Report from an NSF‐sponsored workshop

Abstract: International audienc

Cited by 22 publications

References 276 publications

Cation deficiency associated with the chemical exfoliation of lithium cobalt oxide

Cation deficiency associated with the chemical exfoliation of lithium cobalt oxide

Thin water films and particle morphology evolution in nanocrystalline MgO

Critical Influence of the Processing Route on the Mechanical Properties of Zirconia Composites with Graphene Nanoplatelets

Contact Info

Product

Resources

About