碱性钛酸盐材料K-Ti的制备及对Mn(Ⅱ)吸附性能研究

doi:10.11896/cldb.24120197

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Abstract In this investigation, the alkaline titanate material K-Ti was synthesized using an alkaline precipitation method with titanium oxysulfate as the precursor at ambient temperature. The properties, adsorption efficacy, and mechanisms of K-Ti were examined through static batch experiments and various characterization techniques. K-Ti appears as a rod-like composite of K_1.35Ti₈O₁₆ and amorphous TiO₂, featuring abundant mesoporous structures. When the initial concentration of Mn(Ⅱ) in solution was 5 mg/L with a dosage of 0.16 g/L at room temperature (25 ℃), optimal parameters for Mn(Ⅱ) adsorption onto K-Ti were found: a pH of 7 and a reaction time of 300 minutes, achieving an impressive capacity of 31.55 mg/g. The kinetics align closely with both the quasi-second-order model and Langmuir isotherm; thermodynamic analyses indicate that Mn(Ⅱ) uptake by K-Ti is spontaneous, exothermic, and increases entropy. Increasing the Mn(Ⅱ) concentration to 45 mg/L resulted in maximum adsorption capacity rising to an extraordinary 70.108 4 mg/g. By integrating fitting models with XRD, FTIR, SEM, EDS, and XPS methods, we conducted a comprehensive analysis on the adsorption dynamics facilitated by K-Ti material.Potential mechanisms include electrostatic attraction, hydroxo complexation phenomena, and ion exchange processes. K-Ti exhibits remarkable adsorptive performance without secondary pollution while maintaining high mechanical strength, making it an exceptional candidate for effective applications.

Key words： Mn(Ⅱ) alkaline titanate material adsorption static batch test

Published: Online: 2026-04-16

CLC number:

X522

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	Articles by authors
	PENG Huijing
	ZHANG Weimin
	LI Qianming
	XING Xinlong
	FAN Jing

Cite this article:

PENG Huijing,ZHANG Weimin,LI Qianming, et al. Preparation of Alkaline Titanate Material K-Ti and Its Adsorption Properties for Mn(Ⅱ)[J]. Materials Reports, 2026, 40(7): 24120197-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24120197 OR https://www.mater-rep.com/EN/Y2026/V40/I7/24120197

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