Multi-functionalized and co-doped TiO2/C nanocomposites were derived from the pyrolysis of Ti-MOFs at 800℃under different gaseous atmospheres and their photocatalytic performance were investigated.The gaseous atmosphere during pyrolysis plays a critical role in determining the structural,textural,op-tical and physicochemical properties of the derived TiO2/C composites due to the synergistic effect of nitrogen-containing species,carboxylate and sulfur functionalized porous carbon as well as N/S co-doped TiO2 nanoparticles.All the Ti-MOFs derived TiO2/C composites exclusively possess homogeneously dis-tributed TiO2 nanoparticles in a functionalized disc-like porous carbon matrix and demonstrate much enhanced adsorption and photodegradation performance than commercial TiO2 under the same condi-tions.The adsorption of methylene blue(MB)in dark on these TiO2/C composites are dominated with pseudo second-order kinetic model and the high adsorption capacity of MB in dark on composite TiO2/C derived from MIL-125(Ti)in argon is due to its high surface area with predominant mesoporous car-bon matrix in the composite.The composite N-O-TiO2/C derived from NH2-MIL-125(Ti)in water vapor exhibited the highest photodegradation activity with 99.7％MB removal in 3 h under visible light due to the optimal anatase/rutile phasejunction,together with the formation of photoactive oxygen-rich N-O like interstitial/intraband states above the valence band of TiO2,as well as the presence of N-containing species and-OH/-COOH multi-functional groups with superhydrophilic nature of the composite.This sim-ple one-step and easily modifiable approach can be further employed to modulate homogeneously dis-persed multi-functionalized and co-doped metal oxide/carbon nanocomposites for various environment and energy-related applications.

Mian Zahid Hussain;Zhuxian Yang;Ahmed M.E.Khalil;Shahzad Hussain;Saif Ullah Awan;Quanli Jia;Roland A.Fischer;Yanqiu Zhu;Yongde Xia

College of Engineering,Mathematics and Physical Sciences,University of Exeter,Exeter EX4 4QF,United Kingdom;Department of Chemistry and Catalysis Research Centre,Technical University of Munich,Garching,85748,Germany;Department of Chemical Engineering,Faculty of Engineering,Cairo University,Giza 12613,Egypt;Department of Physics,COMSATS University Islamabad,45550,Pakistan;Department of Electrical Engineering,National University of Sciences and Technology,Islamabad,Pakistan;Henan Key Laboratory of High Temperature Functional Ceramics,Zhengzhou University,Zhengzhou 450052,China

材料科学技术（英文版）

[1]Mian Zahid Hussain;Zhuxian Yang;Ahmed M.E.Khalil;Shahzad Hussain;Saif Ullah Awan;Quanli Jia;Roland A.Fischer;Yanqiu Zhu;Yongde Xia-.Metal-organic framework derived multi-functionalized and co-doped TiO2/C nanocomposites for excellent visible-light photocatalysis)[J].材料科学技术（英文版）,2022(06):49-59

phasejunction

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