Author(s): Bicalho HA; Copeman C; Barbosa HP; Donnarumma PR; Davis Z; Quezada-Novoa V; Velazquez-Garcia JJ; Liu N; Hemmer E; Howarth AJ;

In this work, nine new rare-earth metal-organic frameworks (RE-MOFs, where RE = Lu(III), Yb(III), Tm(III), Er(III), Ho(III), Dy(III), Tb(III), Gd(III), and Eu(III)) isostructural to Zr-MOF-808 are synthesized, characterized, and studied regarding their photophysical properties. Materials with hig ...

Article GUID: 39105655

Author(s): de Medeiros TV; Macina A; Bicalho HA; Naccache R;

Biodiesel remains one of the most promising alternatives to replace fossil fuel-derived petrodiesel. Nonetheless, conventional biodiesel synthesis relies on homogeneous alkali-based catalysts that involve long and tedious purification steps , increasing biodiesel production costs. Heterogeneous catalysts have emerged as promising alternatives to circumven ...

Article GUID: 37058095

Author(s): Copeman C; Bicalho HA; Terban MW; Troya D; Etter M; Frattini PL; Wells DM; Howarth AJ;

A Zr6-based metal-organic framework (MOF), MOF-808, is investigated for the adsorptive removal of IO3- from aqueous solutions, due to its high surface area and abundance of open metal sites. The uptake kinetics, adsorption capacity and binding mode are studied, showing a maximum uptake capacity of 233 mg g-1, the highest reported by any material.

Article GUID: 36753325

Author(s): Bicalho HA; Saraci F; Velazquez-Garcia JJ; Titi HM; Howarth AJ;

Y-CU-45, an analogue of Zr-MOF-808, is synthesized for the first time. Several reaction conditions are tested demonstrating that two fluorinated modulators are required for a reproducible synthesis yielding high quality material. Y-CU-45 shows high crystallinity and surface area, shining light on the potential for rare-earth cluster-based MOFs with open m ...

Article GUID: 36065793

Author(s): Bicalho HA; Donnarumma PR; Quezada-Novoa V; Titi HM; Howarth AJ;

Postsynthetic modification of metal-organic frameworks (MOFs) is an important strategy for accessing MOF analogues that cannot be easily synthesized de novo. In this work, the rare-earth (RE) cluster-based MOF Y-CU-10 with shp topology was modified through transmetalation using a series of RE ions, including La(III), Nd(III), Eu(III), Tb(III), Er(III), Tm ...

Article GUID: 34314164

Author(s): Donnarumma PR; Frojmovic S; Marino P; Bicalho HA; Titi HM; Howarth AJ;

Rare-earth (RE) analogues of UiO-66 with non-functionalised 1,4-benzenedicarboxylate linkers are synthesised for the first time, and a series of synthetic approaches is provided to troubleshoot the synthesis. RE-UiO-66 analogues are fully characterised, and demonstrate a high degree of crystallinity, high surface area and thermal stability, consistent wit ...

Article GUID: 34027524

Author(s): Bicalho HA, Rios RDF, Binatti I, Ardisson JD, Howarth AJ, Lago RM, Teixeira APC

In this work, the potential to use an iron mining waste (IW), rich in a-Fe2O3 and a-FeOOH, for the development of composites based on graphitic carbon nitride (CN) is demonstrated. These materials were synthesized through a simple thermal treatment at 550?°C of a mixture containing melamine and different IW mass percentages, giving rise to the catalysts x ...

Article GUID: 32947712