This work will change the common understanding that C doping of MIL‐125(Ti)‐derived TiO2 is a key factor in improving its photocatalytic performance, and it can also help to understand the internal relationship between the structure and performance of photocatalytic materials deeply. It provides a simple synthesis method for the wider application of TiO2 in the field of photocatalysis. Compared with previous studies, this article uses the titanium‐based metal‐organic framework MIL‐125(Ti) to prepare the semiconductor photocatalyst M‐TiO2 by calcination in the air at a lower temperature and shorter time. After analyzing the M‐TiO2 prepared in the experiment, the results can be received that there is no obvious agglomeration and the morphology is almost unchanged, as the frame structure does not collapse at the same time. As a result, the advantages of the large specific surface area and porousness of metal–organic frameworks (MOF) as precursor derivatives are preserved. As for the changes in the micro‐morphology, pore structure, and specific surface area of M‐TiO2 compared with the precursor, they are investigated seriatim. The results show that, compared with commercial TiO2‐P25, the performance of M‐TiO2 photocatalytic degradation of tetracycline hydrochloride is 5.7 times that of the precursor metal‐organic framework MIL‐125(Ti) and 2.2 times that of P25, and has good cycle stability.
A chemical coprecipitation method has been developed for the preparation of CaCO 3 nanoparticles using a novel membrane dispersion microreactor with calcium chloride, sodium carbonate, and calcium hydroxide as the reagents. Compared with the traditional coprecipitation process in a stirred tank reactor, a novel membrane dispersion microreactor has been developed, which makes it easier to control the crystal size. The effects of supersaturation, reaction time, feed flow rate, and reaction temperature on the size of CaCO 3 particles have been investigated. Synthesized CaCO 3 products are characterized by TGA, FT-IR, XRD, SEM, TEM, and BET. The results show that the crystal size of the prepared CaCO 3 in this novel procedure reaches 18.8 nm, and the surface area reaches 45.94 m 2 /g. Compared with traditional methods, the membrane dispersed process is of important application value because of its smaller mean particle size, lower cost, and higher efficiency. Furthermore, the application scope is more extensive because of no additional additives.
Organic–inorganic composites have exhibited unexpected new properties and have received attention by many scholars. The research on acrylamide Tin(IV) boratophosphate (ATBP) is introduced in this paper. The influence of reactant concentration, mixing ratio, pH, and other experimental parameters on the properties of the ATBP was elucidated, determining which exhibits the best ion exchange capacity (IEC) of 1.4 mequiv/g, and the physical and chemical properties of the ATBP were characterized by TGA, FTIR, XRD, SEM, and EDS. Furthermore, the elution concentration, elution performance, and thermal stability of ATBP were also studied. It was amazing to find that the distribution coefficient of ATBP was 337 mL g–1 for Fe3+. And the adsorption mechanism of ATBP was also studied from the thermodynamics, kinetics, and adsorption isotherm. The ATBP cation exchanger has a good application prospect in the removal of Fe3+ from acid polluted water.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.