Hydrothermal synthesis as a versatile tool for the preparation of metal hexacyanoferrates: a review

Turning Berlin green frameworks into cubic crystals for cathodes with high-rate capability

“…, pre-lithiation with lithium/perylene/dimethoxyethane solution). Moreover, our approach would considerably reduce the generation of toxic wastes, 13,27,33–38,46 thereby indicating the greener aspect of our synthetic protocol.…”

“…The successful synthesis of a series of BG samples was supported by the low K/Fe molar ratio calculated based on the results of inductively coupled plasma optical element spectroscopy (ICP-OES, Table S1 †). Compared with conventional synthetic methods, 13,27,[33][34][35][36][37][38]46 our approach provides a greener alternative because of its mild synthetic conditions and the absence of strong acids (e.g., hydrochloric acid), energy-consuming processes (e.g., hydrothermal process), and post-treatment (e.g., pre-lithiation with lithium/perylene/dimethoxyethane solution). Moreover, our approach would considerably reduce the generation of toxic wastes, 13,27,[33][34][35][36][37][38]46 thereby indicating the greener aspect of our synthetic protocol.…”

“…The successful synthesis of a series of BG samples was supported by the low K/Fe molar ratio calculated based on the results of inductively coupled plasma optical element spectroscopy (ICP-OES, Table S1†). Compared with conventional synthetic methods, 13,27,33–38,46 our approach provides a greener alternative because of its mild synthetic conditions and the absence of strong acids ( e.g. , hydrochloric acid), energy-consuming processes ( e.g.…”

“…The aforementioned crystallization proceeds rapidly in a random manner, scarcely allowing for the possibility of controlling its morphology. 31,32 Furthermore, previous strategies engaging chelating agents 13,33,34 and hydrothermal processes 27,[34][35][36][37][38] cannot achieve BG cubes because alkali ions could be readily incorporated into the BG framework, thus resulting in the formation of either PB or PW phases rather than the BG phase.…”

Research progress of Prussian blue and its analogues for cathodes of aqueous zinc ion batteries

“…The performance of the resulting products depends on both the formation mechanism and hydrothermal conditions. 76 Yang et al 77 and Zheng et al 78 reported the synthesis of microcubes of Berlin green and Prussian blue, respectively. Since then, several studies have documented the utilization of the hydrothermal method for synthesizing a diverse range of Prussian blue-based materials.…”