Solvent-free synthetic protocols for halide perovskites

Zhang, Xinrui; Zheng, Jiaomao; Wang, Yifan; Wang, Zhenlong; Zheng, Luyao; Nozariasbmarz, Amin; Tao, Kai; Ma, Binghe; Poudel, Bed; Wang, Kai; Ye, Tao

doi:10.1039/d3qi00163f

Cited by 2 publications

(1 citation statement)

References 124 publications

(218 reference statements)

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“…Solvent-free reactions in mechanochemistry preserve sample integrity, eliminating solventinduced side reactions and ensuring product purity and reliability [20][21][22][23][24][25]. Consequently, materials synthesized via mechanochemistry demonstrate superior performance and stability, making them desirable for industrial and technological applications [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

The mechanochemistry of lanthanum dihydride (LaH\(_{2}\)) with hydrogen (H\(_{2}\)) using the ball-mill process and the effect of oxidation on the resulting products

PRAMONO,

HERBIROWO,

IMADUDDIN

et al. 2024

J Met Mater Miner

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The complex behavior of LaH2 during ball milling was investigated in this study, with its mechanical, chemical, and morphological changes explored. The relationship between milling time and hydrogen pressure reduction was uncovered through detailed experiments, reflecting the dynamic nature of the process. A transient yet significant event was observed upon unsealing the milling jar post-milling: the emergence of a minor fire ember, indicative of the interplay between mechanical forces and chemical reactivity within the LaH2 powder. Profound changes in the structure, composition, and shape were unraveled using advanced techniques such as X-ray diffraction (XRD), scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM/EDX), and particle size distribution analysis. The resulting powder exhibited a dual-phase composition of lanthanum dihydride (LaH2, 68.1% to 71.5%) and lanthanum oxide (La2O3, 28.5% to 31.9%), reflecting a dynamic chemical equilibrium during milling. Particle size distribution analysis revealed a notable increase in average diameter to 6420 nm, accompanied by a polydispersity index (PDI) of 0.831, signifying a broadening compared to the initial LaH2 powder. The morphological evolution of the powder was elucidated through SEM imaging, showing predominantly spherical and rounded forms, indicating extensive particle agglomeration and plastic deformation during milling. Additionally, the formation of oxide layers on the powder surface, intertwined with pronounced particle agglomeration, was highlighted through EDX mapping, shedding light on the mechanical aspects of morphological evolution during milling. These findings contribute to our understanding of LaH2 behavior under extreme mechanical and chemical conditions and have implications for materials processing, hydrogen storage technologies, and broader applications in materials science and engineering.

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Section: Introductionmentioning

confidence: 99%

The mechanochemistry of lanthanum dihydride (LaH\(_{2}\)) with hydrogen (H\(_{2}\)) using the ball-mill process and the effect of oxidation on the resulting products

PRAMONO,

HERBIROWO,

IMADUDDIN

et al. 2024

J Met Mater Miner

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Scalable complete conversion of MgCo₂O₄ by mechanochemistry for high-performance supercapacitors

Liu,

Xiang,

Zhang

et al. 2024

Inorg. Chem. Front.

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Solvent-free synthetic protocols for halide perovskites

Abstract: Halide perovskites have been extensively researched in the past decade and explored in fields stepping out from photovoltaics towards photothermal and thermoelectric energy conversion, light-emission, high-energy electromagnetic radiation detection, memristors/artificial...

Cited by 2 publications

References 124 publications

The mechanochemistry of lanthanum dihydride (LaH\(_{2}\)) with hydrogen (H\(_{2}\)) using the ball-mill process and the effect of oxidation on the resulting products

The mechanochemistry of lanthanum dihydride (LaH\(_{2}\)) with hydrogen (H\(_{2}\)) using the ball-mill process and the effect of oxidation on the resulting products

Scalable complete conversion of MgCo₂O₄ by mechanochemistry for high-performance supercapacitors

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Solvent-free synthetic protocols for halide perovskites

Abstract: Halide perovskites have been extensively researched in the past decade and explored in fields stepping out from photovoltaics towards photothermal and thermoelectric energy conversion, light-emission, high-energy electromagnetic radiation detection, memristors/artificial...

Cited by 2 publications

References 124 publications

The mechanochemistry of lanthanum dihydride (LaH\(_{2}\)) with hydrogen (H\(_{2}\)) using the ball-mill process and the effect of oxidation on the resulting products

The mechanochemistry of lanthanum dihydride (LaH\(_{2}\)) with hydrogen (H\(_{2}\)) using the ball-mill process and the effect of oxidation on the resulting products

Scalable complete conversion of MgCo2O4 by mechanochemistry for high-performance supercapacitors

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Scalable complete conversion of MgCo₂O₄ by mechanochemistry for high-performance supercapacitors