Band-gap-energy-adjustable and noble-metal-free modified NiS-Zn Cd1-S for highly efficient visible-light-driven Cr6+ photoreduction in alkaline wastewater

Nitrogen-loaded TiO2(N-loaded TiO2), a visible-light driven catalyst, was successfully synthesized by the modified sol-gel method. Physical characterizations of the as-prepared catalysts have been performed by using X-ray diffraction (XRD), Diffuse reflectance UVvisspectroscopy(DRUVvis), Raman spectroscopyand BETspecific surface areain order to obtain structure-activity relationship. Results from Raman spectroscopy clearly suggested that N atoms were incorporated into the TiO2crystal lattice as evidenced by the vibrational peak of TiN in TiO2-xNx.DR UVvis results also suggested that the nitrogen dopant might be responsible for narrowing the TiO2band gap energy, thus resulting in a shift towards the visiblelight region. Photocatalytic activity of N-loaded TiO2evaluated through the degradation of methyl orange (MO)under visible light irradiation (l> 400 nm) indicated that all N-loaded photocatalysts exhibited significantly higher activities than the unloaded TiO2and Degussa P25 TiO2. According to the results from DR UV-vis, XRD and BET studies, the enhanced photoactivity observed from N-loaded samples might be due to a decrease in TiO2band gap energy and/or changes in chemical and physical properties of the materials upon loading with nitrogen.

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Noble metal-free MoS 2 modified Mn 0.25 Cd 0.75 S for highly efficient visible-light driven photocatalytic H 2 evolution

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2017.03.035 ◽

2017 ◽

Vol 209 ◽

pp. 514-522 ◽

Cited By ~ 43

Author(s):

Qun-Zeng Huang ◽

Yan Xiong ◽

Qian Zhang ◽

Hong-Chang Yao ◽

Zhong-Jun Li

Keyword(s):

Visible Light ◽

Noble Metal ◽

Metal Free ◽

Highly Efficient ◽

Visible Light Driven

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Visible light driven photo-degradation of Congo red by TiO2ZnO/Ag: DFT approach on synergetic effect on band gap energy

Chemosphere ◽

10.1016/j.chemosphere.2018.09.053 ◽

2018 ◽

Vol 213 ◽

pp. 481-497 ◽

Cited By ~ 9

Author(s):

Carlos Alberto Huerta-Aguilar ◽

Viviana Palos-Barba ◽

Pandiyan Thangarasu ◽

Ranjit T. Koodali

Keyword(s):

Visible Light ◽

Band Gap ◽

Congo Red ◽

Synergetic Effect ◽

Band Gap Energy ◽

Photo Degradation ◽

Gap Energy ◽

Visible Light Driven

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A noble-metal-free photocatalyst system obtained using BODIPY-based MOFs for highly efficient visible-light-driven H2 evolution

Journal of Materials Chemistry A ◽

10.1039/c9ta06989e ◽

2019 ◽

Vol 7 (36) ◽

pp. 20742-20749 ◽

Cited By ~ 8

Author(s):

Heng Yang ◽

Ming Zhao ◽

Jing Zhang ◽

Ji Ma ◽

Pengyan Wu ◽

...

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Noble Metal ◽

H2 Evolution ◽

Metal Free ◽

Highly Efficient ◽

Visible Light Driven

This study provides fundamental insights into the role of porosity in photocatalytic activity and might inform the ongoing efforts toward the noble-metal-free photocatalytic systems via BODIPY-based MOFs for visible-light-promoted H2 evolution.

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