Esoteric CO adsorption by CuCl-NiCl2 embedded microporous MIL-101 (Cr)

Freeze Granulation of Nanoporous UiO-66 Nanoparticles for Capture of Volatile Organic Compounds

“…For UiO-66 prepared in this work, the toluene adsorption capacity was higher than the other MOF family members, i.e., 350 mg g –1 for MOF-177, 234 mg g –1 for Cu-BTC, and 224 mg g –1 for ZIF-67 . The higher adsorption capacity was possibly due to the esoteric π–π interaction, π-complexation, and H-bonding reported previously. − However, all the samples suffered decreasing uptake capacity in the second (blue marker) and third cycle (green marker) which suggests that there was still a remnant of toluene stranded in the interstices of the adsorbents that was not completely purged from the samples during desorption. The amount of the remnants was small, indicating that the adsorbents were highly reusable.…”

“…Metal–organic framework (MOF)-derived materials such as the graphene–MOF hybrid demonstrated enhanced sensing performance for the detection of volatile organic compounds (VOC) biomarkers. − The material was reportedly capable of sensing the VOC biomarkers at a minuscule level between 2.82 and 22.6 ppm . The high detection level and selectivity of the MOF-derived sensor toward the biomarkers were apparently due to the microporous nature of the MOF, which was reportedly capable of capturing adsorbates through esoteric π–π interaction, π-complexation, and H-bonding. − Despite the many benefits that the MOF has to offer, this material typically exists in an extremely fine powdery form in nanosize scale that becomes difficult to recover or retain in the system, resulting in lower process efficiency and sustainability when it is applied as a gas adsorbent. − …”

“…There is a gap in the literature relating to toluene adsorption capacity by UiO-66 or its use as a sensing element. Another reason UiO-66 material was chosen in this work was due to its capability of capturing adsorbates through esoteric π–π interaction, π-complexation, and H-bonding − that might be unique to this new family member of MOF materials. This paper not only elucidates the effects of PVA addition on the pore characteristics, crystallinity, and mechanical strength of the resulting UiO-66 spherical beads but also highlights, analyzes, and discusses the effect of PVA on the toluene adsorption efficacy.…”

Overview of Carbon Monoxide Adsorption Performance of Pristine and Modified Adsorbents

“…When a Cu 2+ precursor is used, metals can be coimpregnated to facilitate the conversion of Cu 2+ to Cu + . 77,78,95 Specific impregnation methods, such as dry impregnation, wet impregnation, and double-solvent (DS) methods, are applied to load the copper component on the supporting porous material (step 2). The wet impregnation method is a conventional metal impregnation method.…”

“…(a) Isosteric heats of adsorption and (b) CO/CO 2 selectivities of adsorbents as functions of CO adsorption amount and (c, d) CO adsorption amounts on adsorbents as functions of BET surface area at (c) 100 kPa and (d) 10 kPa. ,,,,,− ,,,,,− ,,,− ,,,− ,,− ,− ,,− ,− Solid symbols are for Cu + impregnated adsorbents, and open symbols are for pristine adsorbents.…”