4.7 Article

Construction of TiO2/BiOI1- x Z-scheme heterojunction with iodine vacancy for enhancing photocatalytic oxidation of elemental mercury

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

The effect of different morphology of fluoride-mediated TiO2 based on Ostwald ripening on photocatalytic activity

Zhiqiang Liu et al.

Summary: The study successfully prepared TiO2 with different morphologies mediated by fluoride through Ostwald ripening, showing that the morphology and structure can be adjusted according to ionic environments to impact photocatalytic activity. The hollow structure can promote carrier separation and transfer, while surface fluoride reduces carrier recombination rate, enhancing photocatalytic efficiency.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2021)

Article Engineering, Environmental

Fabrication of Z-scheme VO-Bi2WO6/g-C3N4 heterojunction composite with visible-light-driven photocatalytic performance for elemental mercury removal

Yili Zhang et al.

Summary: Photocatalytic Hg-0 oxidation under visible light radiation is an economic and feasible approach to deal with energy and pollution problems. The introduction of oxygen vacancies and the formation of Z-scheme heterojunction have been shown to significantly improve the mercury removal efficiency. The enhanced photocatalytic efficiency is mainly attributed to the carrier transmission mechanism of Z-scheme heterojunction, which enhances light absorption intensity, facilitates carrier movement and separation, and improves interfacial charge-transfer efficiency.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Physical

Elemental mercury removal by I--doped Bi2WO6 with remarkable visible-light-driven photocatalytic oxidation

Yili Zhang et al.

Summary: In this study, iodine-doped Bi2WO6 composites were synthesized through a one-step hydrothermal method to evaluate their photocatalytic efficiency in gas-phase elemental mercury removal under visible-light irradiation. The results showed that 1.0 wt.% iodine-doped Bi2WO6 exhibited the optimal Hg-0 removal efficiency due to reduced potential energy in the conduction band, decreased recombination rate of electron-hole pairs, and accelerated charge transfer. The density functional theory calculations suggested that iodine doping occurred in the (WO4)(2-) layer, facilitating the adsorption of oxidized HgO on the surface of the doped Bi2WO6.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Energy & Fuels

Fabrication of a Z-Scheme Heterojunction Polyhedral-Shaped BiOIO3/MIL-53(Fe) Photocatalyst for Enhancing Gaseous Hg-0 Removal

Jianwen Guo et al.

Summary: A Z-scheme heterojunction polyhedral-shaped BiOIO3/MIL-53(Fe) photocatalyst was prepared by a solvothermal method, showing improved vapor-phase mercury removal efficiency compared to MIL-53(Fe). The optimal molar ratio of BiOIO3 and MIL-53(Fe) was found to be 2:1, reaching a Hg-0 removal efficiency of 74.19%. The proposed photocatalytic oxidation mechanism of Hg-0 by the BiOIO3/MIL-53(Fe) composite paves the way for further study on the electron transport channels between binary photocatalyst materials.

ENERGY & FUELS (2021)

Article Chemistry, Physical

Surface defect engineering of Fe-doped Bi7O9I3 microflowers for ameliorating charge-carrier separation and molecular oxygen activation

Tao Jia et al.

Summary: The study demonstrates that Fe-doped Bi7O9I3 photocatalyst can significantly enhance photocatalytic activity by tuning oxygen vacancies and promoting charge separation, providing a new approach for designing efficient photocatalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Chemistry, Physical

Z-scheme heterojunction of flower microsphere Bi7O9I3 surface loaded with gray TiO2 particles for photocatalytic oxidation of gas-phase Hg0

Jiang Wu et al.

Summary: Constructing Z-scheme heterojunctions between Bi7O9I3 and TiO2 using a simple deposition method shows improved catalytic efficiency, with the best performance achieved at 30% mass percentage of TiO2. The composite exhibited enhanced properties such as electron-hole separation efficiency and Hg-0 removal efficiency under visible light irradiation.

APPLIED SURFACE SCIENCE (2021)

Article Engineering, Environmental

Enhanced photocatalytic antibacterial and degradation performance by n-p type 0D/2D SnO2-x/BiOI photocatalyst under LED light

Chaobao Wang et al.

Summary: A novel n-p type 0D/2D SnO2-x/BiOI photocatalyst was developed for efficient removal of pollutants from wastewater, showing enhanced separation efficiency of photo-excited electron-hole pairs. The mechanism involves reaching a new equilibrium in Fermi levels, aiding in charge separation for high efficiency photocatalysis.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Physical

Self-grown oxygen vacancies-rich CeO2/BiOBr Z-scheme heterojunction decorated with rGO as charge transfer channel for enhanced photocatalytic oxidation of elemental mercury

Tao Jia et al.

Summary: In this study, an oxygen vacancy-rich CeO2/BiOBr Z-scheme heterojunction was prepared via solvothermal method, which exhibited efficient photocatalytic oxidation of gaseous elemental mercury. The collaboration of interface engineering, oxygen vacancies, and Ce3+/Ce4+ redox centers significantly enhanced charge carrier transfer and photocatalytic activity. Further investigation on the effect of actual flue gas components demonstrated the feasibility of using this Z-scheme heterojunction for environmental purification.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

Article Chemistry, Physical

Construction of CeO2/BiOI S-scheme heterojunction for photocatalytic removal of elemental mercury

Yixuan Xiao et al.

Summary: A series of CeO2/BiOI S-scheme heterojunction photocatalysts were prepared through a simple method, showing significantly improved photocatalytic activity. This work provides guidance for exploring the effective construction of Bi-based composite photocatalysts with S-scheme heterojunctions.

APPLIED SURFACE SCIENCE (2021)

Article Engineering, Environmental

Vacancy engineering and constructing built-in electric field in Z-scheme full-spectrum-Response 0D/3D BiOI/MoSe2 heterojunction modified PVDF membrane for PPCPs degradation and anti-biofouling

Linlin Zhang et al.

Summary: Vacancy engineering and constructing a built-in electric field are effective strategies to enhance the photocatalytic performance of semiconductors. The Z-scheme photocatalyst 0D/3D-BiOI/MoSe2 heterojunction promotes separation of photogenerated carriers through defect engineering and the interface with the built-in electric field. The composite membrane shows enhanced photocatalytic efficiency by controlling the reaction at the surface and interface, demonstrating a simple and sustainable strategy for clean water production.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Engineering, Environmental

TiO2/BiOI p-n junction-decorated carbon fibers as weavable photocatalyst with UV-vis photoresponsive for efficiently degrading various pollutants

Yan Zhang et al.

Summary: Fabrication of weavable CF/TiO2/BiOI bundles on carbon fiber allows for strong and broad-spectrum photoabsorption, leading to superior adsorption and photodegradation efficiency for various pollutants. The reusable macroscopic photocatalyst retains excellent photocatalytic activity even after multiple cycles, showing potential for environmental purification applications.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Energy & Fuels

Study of Sheetlike BiOI/Rodlike Bi5O7I Composite Photocatalyst by In Situ Crystallization of BiOI with pH-Dependence for Hg0 Removal

Yu Guan et al.

Summary: The study prepared sheetlike BiOI/rodlike Bi5O7I photocatalysts through in situ crystallization method at different pH values under alkaline conditions. Different preparation conditions led to different microstructures of the catalysts, with the morphology changing from sheetlike to rodlike as pH increased. The formation of heterostructures between sheetlike BiOI and rodlike Bi5O7I contributed to enhanced photocatalytic performance in removing Hg-0 under visible-light irradiation without sacrificial agents.

ENERGY & FUELS (2021)

Article Chemistry, Physical

Construction of two-dimensional BiOI on carboxyl-rich MIL-121 for visible-light photocatalytic degradation of tetracycline

Dingliang Dai et al.

Summary: A series of BiOI/MIL-121(Al) hybrid photocatalysts were prepared by a facile hydrothermal method, showing good performance for the visible-light-driven degradation of tetracycline. The hydrogen bond induced by carboxyl in MIL-121 promotes tetracycline adsorption and photocatalytic degradation process. Photo-induced holes and superoxide radicals are identified as the main active species for the photocatalytic degradation of tetracycline over BiOI/MIL-121 composites.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Article Materials Science, Multidisciplinary

Effect of (La, Ce, Eu) doping on structural, and optical properties of BiOI nanosheets: As a model of photocatalytic activity in heavy metal removal under visible light

Yixuan Xiao et al.

Summary: The research revealed that lanthanide metal doping has a significant impact on the photocatalytic activity of BiOI, with cerium ions playing a key role in enhancing its performance. Furthermore, doping with different lanthanide ions leads to variations in charge carrier separation efficiency and photo-corrosion prevention effects of BiOI.

MATERIALS CHEMISTRY AND PHYSICS (2021)

Article Engineering, Environmental

Preparation of the additive-modified α-Fe2O3/g-C3N4 Z-scheme composites with improved visible-light photocatalytic activity

Derong Sun et al.

Summary: A hollow alpha-Fe2O3 (S3) sample with high-activity was successfully obtained by adding H2PO4- and Cu2+ ions via a hydrothermal process, and S3/g-C3N4 composites were synthesized using a simple method. The visible-light photocatalytic degradation efficiency of p-Nitrophenol was enhanced through the synergistic effect of heterojunction and photo-Fenton in the S3/g-C3N4 degradation system, providing a new insight for p-NP removal in the wastewater.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

Article Engineering, Environmental

Directly electrospinning synthesized Z-scheme heterojunction TiO2@Ag@Cu2O nanofibers with enhanced photocatalytic degradation activity under solar light irradiation

Xuelian Li et al.

Summary: Electrospun TiO2@Ag@Cu2O nanofibers photocatalyst exhibits excellent visible light catalytic degradation performance, achieving a degradation efficiency of 99% for methylene blue within two hours. The combination of surface plasmon resonance effect of Ag and Z-scheme heterojunction structure contributes to the enhanced efficiency of the photocatalyst.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

Review Chemistry, Multidisciplinary

Photocatalytic oxidation removal of elemental mercury from flue gas. A review

Dongjing Liu et al.

ENVIRONMENTAL CHEMISTRY LETTERS (2020)

Article Chemistry, Physical

In-situ fabrication of Z-scheme CdS/BiOCl heterojunctions with largely improved photocatalytic performance

Xiaolong Tang et al.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2020)

Review Chemistry, Multidisciplinary

S-Scheme Heterojunction Photocatalyst

Quanlong Xu et al.

Review Thermodynamics

Reaction mechanisms and chemical kinetics of mercury transformation during coal combustion

Yingju Yang et al.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2020)

Article Chemistry, Physical

Visible-light-driven deep oxidation of NO over Fe doped TiO2 catalyst: Synergic effect of Fe and oxygen vacancies

Gang Cheng et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Article Engineering, Environmental

One Step Interface Activation of ZnS Using Cupric Ions for Mercury Recovery from Nonferrous Smelting Flue Gas

Yong Liao et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2019)

Article Chemistry, Physical

Ultrathin 2D/2D WO3/g-C3N4 step-scheme H2-production photocatalyst

Junwei Fu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

Article Chemistry, Multidisciplinary

Iodine-Deficient BiOI Nanosheets with Lowered Valence Band Maximum To Enable Visible Light Photocatalytic Activity

Xuewen Wang et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2019)

Article Chemistry, Physical

Enhancing photocatalytic activity on gas-phase heavy metal oxidation with self-assembled BiOI/BiOCl microflowers

Xiaoming Sun et al.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2019)

Article Engineering, Environmental

Cost-Effective Manganese Ore Sorbent for Elemental Mercury Removal from Flue Gas

Yingju Yang et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2019)

Article Engineering, Environmental

Fe-modified MnOx/TiO2 as the SCR catalyst for simultaneous removal of NO and mercury from coal combustion flue gas

Shibo Zhang et al.

CHEMICAL ENGINEERING JOURNAL (2018)

Article Chemistry, Multidisciplinary

0D/2D Heterojunctions of Vanadate Quantum Dots/Graphitic Carbon Nitride Nanosheets for Enhanced Visible-Light-Driven Photocatalysis

Meng-Yang Ye et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2017)

Article Chemistry, Physical

Photocatalytic oxidation of gas-phase Hg0 on the exposed reactive facets of BiOI/BiOIO3 heterostructures

Ruixing Zhou et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

Article Chemistry, Physical

Promoted V2O5/TiO2 catalysts for selective catalytic reduction of NO with NH3 at low temperatures

Siva Sankar Reddy Putluru et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2016)

Article Chemistry, Physical

Ceria-zirconia modified MnOx catalysts for gaseous elemental mercury oxidation and adsorption

Deshetti Jampaiah et al.

CATALYSIS SCIENCE & TECHNOLOGY (2016)

Article Chemistry, Physical

DFT Study of Hg Oxidation across Vanadia-Titania SCR Catalyst under Flue Gas Conditions

Ana Suarez Negreira et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2013)