Science - USA (2021-07-16)

without the aid of a template or binder (Fig. 1A and fig. S1). Neither high-temperature calcination nor other posttreatment was ...

and the signal atg= 2.0 to Fe species inside the microporous channels (Fig. 3D) ( 33 – 35 ). Onthebasisoftheseobservationsandthe ...

various other sorbents (table S8) ( 10 , 11 , 13 – 16 , 22 ). Volumetric adsorption capacity is essential for many practical app ...

of Fe-MOR(0.25). The small changes in CO 2 uptake and CO 2 /N 2 (CH 4 ) IAST selectivities during the recycle experiments on CO ...

REPORTS ◥ MATERIALS SCIENCE Autonomous self-repair in piezoelectric molecular crystals Surojit Bhunia1,2, Shubham Chandel^3 †, S ...

in a perpendicular direction by bipyrazole molecules via O–H···N and N–H···O hydrogen- bonding interactions (fig. S7C). In addit ...

SCIENCEsciencemag.org 16 JULY 2021•VOL 373 ISSUE 6552 323 (100) (001) (010) A B C F G H 0.3 V 0.0 0.6 1.0 V D E 1.92 ...

of mechanically fragmented samples implies some amount of fatigue or permanent defor- mation in them. We further mapped the nano ...

Polar, hydrogen-bonded water chains with O-H(d+)and(d–)O-H run parallel to the crystal length (Fig. 3A); hence, fracture occurri ...

diffraction data provided an excellent fit to the structural model (table S3), confirming an ef- ficient self-healing with reten ...

G. R. Desiraju, J. J. Vittal, A. Ramanan,Crystal Engineering: A Textbook(World Scientific, 2011). ACKNOWLEDGMENTS We thank V. ...

*BEA (red trace), a broad distribution of spec- tral intensity is observed, reflecting the dom- inant contributions from deactiv ...

Mössbauer spectroscopy, this reaction gener- ates a new majority component that exhibits hyperfine structure in the absence of a ...

in the inset for the H 2 reaction in Fig. 3B, the reaction ofa-Fe(IV)=O with H 2 inBEA results in a change in its diffuse reflec ...

This component likely derives from rapidly relaxinga-Fe(III)′sites, encompassing both a-Fe(III)-OH anda-Fe(III)-OCH 3 , leading ...

NANOMATERIALS Determinants of crystal structure transformation of ionic nanocrystals in cation exchange reactions Zhanzhao Li^1 ...

large change in volume likely allowed the S^2 − anions to move extensively, resulting in the formation of corresponding stable p ...

width by 5.4-nm height) were transformed into Co 9 S 8 andw-CoS NCs, respectively (fig. S11, A and B). Likewise, wide rods (S1, ...

NRs and NPLs, respectively, even though both NCshadthesameroxbyitephase. In the partial cation-exchanged products, the XRD peaks ...

Mn2+and Zn2+resulted in formation ofw-MnS andw-ZnS NRs, respectively (Fig. 4, A to H), unlike in the Co2+case. When using Ni2+as ...