Efficient Doping Induced by Charge Transfer at the Hetero-Interface to Enhance Photocatalytic Performance.

The construction of heterojunction photocatalysts is an effective method to improve photocatalytic efficiency since the potential gradient and built-in electron field established at the junction could enhance the efficiency of charge separation and interfacial charge transfer. Nevertheless, heterojunction photocatalysts with strong built-in electron fields remain difficult to build since the two adjacent constitutes must be satisfied with an appropriate band alignment, redox potential, and carrier concentration gradient. Here, an efficient charge transfer-induced doping strategy is proposed to enhance the heterojunction built-in electron field for stable and efficient photocatalytic performance. Carrier transfer tests show that the rectification ratio of the n-TiO2-X/n-BiOI heterojunction is significantly enhanced after being coated with graphene oxide (GO). Consequently, both the hydrogen production and photodegradation performance of the GO composite heterojunction are considerably enhanced compared with pure TiO2-X, BiOI, and n-TiO2-X/n-BiOI. This work provides a facile method to prepare heterojunction photocatalysts with a high catalytic activity.

[1]  K. Hareesh,et al.  Nitrogen ion beam induced modifications on the properties of carbon quantum dots/TiO2 nanocomposite , 2022, Vacuum.

[2]  Yue Liu,et al.  Fluorine-induced oxygen vacancies on TiO2 nanosheets for photocatalytic indoor VOCs degradation , 2022, Applied Catalysis B: Environmental.

[3]  Zhikun Xu,et al.  TiO2-X Mesoporous Nanospheres/BiOI Nanosheets S-scheme Heterostructure for High Efficiency, Stable and Unbiased Photocatalytic Hydrogen Production , 2022, Chemical Engineering Journal.

[4]  Rong Yu,et al.  Unveiling the charge transfer dynamics steered by built-in electric fields in BiOBr photocatalysts , 2022, Nature Communications.

[5]  Adrian M. Gardner,et al.  Photocatalytic Overall Water Splitting Under Visible Light Enabled by a Particulate Conjugated Polymer Loaded with Palladium and Iridium , 2022, Angewandte Chemie.

[6]  Peng Zhang,et al.  Photo-Assisted Self-Assembly Synthesis of All 2D-Layered Heterojunction Photocatalysts with Long-Range Spatial Separation of Charge-Carriers toward Photocatalytic Redox Reactions , 2021, Chemical Engineering Journal.

[7]  F. Dong,et al.  Atomic interfacial structure and charge transfer mechanism on in-situ formed BiOI/Bi2O2SO4 p–n heterojunctions with highly promoted photocatalysis , 2021 .

[8]  Lizhi Zhang,et al.  Diffusion‐Controlled Z‐Scheme‐Steered Charge Separation across PDI/BiOI Heterointerface for Ultraviolet, Visible, and Infrared Light‐Driven Photocatalysis , 2021, Advanced Functional Materials.

[9]  B. Wei,et al.  Boosting photocatalytic hydrogen production from water by photothermally induced biphase systems , 2021, Nature Communications.

[10]  Hyoyoung Lee,et al.  Present and Future of Phase-Selectively Disordered Blue TiO2 for Energy and Society Sustainability , 2021, Nano-micro letters.

[11]  Jiang Wu,et al.  Self-grown oxygen vacancies-rich CeO2/BiOBr Z-scheme heterojunction decorated with rGO as charge transfer channel for enhanced photocatalytic oxidation of elemental mercury. , 2020, Journal of colloid and interface science.

[12]  Dan Chen,et al.  Cobalt monoxide/tungsten trioxide p-n heterojunction boosting charge separation for efficient visible-light-driven gaseous toluene degradation , 2020 .

[13]  Baojiang Jiang,et al.  Efficient Photocatalytic Hydrogen Evolution over TiO2-X Mesoporous Spheres-ZnO Nanorods Heterojunction , 2020, Nanomaterials.

[14]  Stefanos Giannakis,et al.  Improving visible light photocatalytic inactivation of E. coli by inducing highly efficient radical pathways through peroxymonosulfate activation using 3-D, surface-enhanced, reduced graphene oxide (rGO) aerogels , 2020 .

[15]  S. Parikh,et al.  Black TiO2: A review of its properties and conflicting trends , 2020 .

[16]  K. Domen,et al.  Photocatalytic water splitting with a quantum efficiency of almost unity , 2020, Nature.

[17]  O. Hansen,et al.  Parallel Evaluation of the BiI3, BiOI, and Ag3BiI6 Layered Photoabsorbers , 2020 .

[18]  Jiang Liu,et al.  Semiconductor-Covalent Organic Framework Z-scheme Heterojunctions for Artificial Photosynthesis. , 2020, Angewandte Chemie.

[19]  L. Hultman,et al.  Compromising science by ignorant instrument calibration - need to revisit half a century of published XPS data. , 2020, Angewandte Chemie.

[20]  D. Zhao,et al.  Defect-engineering of mesoporous TiO2 microspheres with phase junctions for efficient visible-light driven fuel production , 2019 .

[21]  Wenge Yang,et al.  Pressure engineering of photovoltaic perovskites , 2019, Materials Today.

[22]  Z. Zou,et al.  Self-constructed facet junctions on hexagonal CdS single crystals with high photoactivity and photostability for water splitting , 2019, Applied Catalysis B: Environmental.

[23]  Jun Zhang,et al.  Fabrication of GO/CDots/BiOI nanocomposites with enhanced photocatalytic 4-chlorophenol degradation and mechanism insight , 2019, Separation and Purification Technology.

[24]  Hong Huang,et al.  Facile synthesis of the Ti3+–TiO2–rGO compound with controllable visible light photocatalytic performance: GO regulating lattice defects , 2018, Journal of Materials Science.

[25]  Shaojun Guo,et al.  Bismuth oxyhalide layered materials for energy and environmental applications , 2017 .

[26]  Frank Hollmann,et al.  Selective aerobic oxidation reactions using a combination of photocatalytic water oxidation and enzymatic oxyfunctionalisations , 2017, Nature Catalysis.

[27]  Gang Wang,et al.  BiOI-promoted nano-on-micro BiOI-MoS 2 /CdS system for high-performance on photocatalytic H 2 evolution under visible light irradiation , 2017 .

[28]  A. Goonetilleke,et al.  Treatment Technologies for Emerging Contaminants in water: A review , 2017 .

[29]  Ying-hua Liang,et al.  Enriched photoelectrocatalytic degradation and photoelectric performance of BiOI photoelectrode by coupling rGO , 2017 .

[30]  Qixing Zhou,et al.  The fundamental role and mechanism of reduced graphene oxide in rGO/Pt-TiO2 nanocomposite for high-performance photocatalytic water splitting , 2017 .

[31]  T. Kondo,et al.  Peptide Cross-linkers: Immobilization of Platinum Nanoparticles Highly Dispersed on Graphene Oxide Nanosheets with Enhanced Photocatalytic Activities. , 2017, ACS Applied Materials and Interfaces.

[32]  W. Peukert,et al.  Noble‐Metal‐Free Photocatalytic Hydrogen Evolution Activity: The Impact of Ball Milling Anatase Nanopowders with TiH2 , 2017, Advanced materials.

[33]  Yihe Zhang,et al.  In situ assembly of BiOI@Bi12O17Cl2 p-n junction: charge induced unique front-lateral surfaces coupling heterostructure with high exposure of BiOI {001} active facets for robust and nonselective photocatalysis , 2016 .

[34]  Jinhua Ye,et al.  In Situ Bond Modulation of Graphitic Carbon Nitride to Construct p–n Homojunctions for Enhanced Photocatalytic Hydrogen Production , 2016 .

[35]  L. Shan,et al.  Photoelectrochemical (PEC) water splitting of BiOI{001} nanosheets synthesized by a simple chemical transformation , 2016 .

[36]  K. Butler,et al.  Interplay of Orbital and Relativistic Effects in Bismuth Oxyhalides: BiOF, BiOCl, BiOBr, and BiOI , 2016, Chemistry of materials : a publication of the American Chemical Society.

[37]  E. Streltsov,et al.  Photocurrent switching effect on platelet-like BiOI electrodes: influence of redox system, light wavelength and thermal treatment , 2016 .

[38]  W. Jo,et al.  Enhanced visible light-driven photocatalytic performance of ZnO-g-C3N4 coupled with graphene oxide as a novel ternary nanocomposite. , 2015, Journal of hazardous materials.

[39]  Baibiao Huang,et al.  Controllable synthesis and photocatalytic activity of Ag/BiOI based on the morphology effect of BiOI substrate , 2015 .

[40]  Qian Liu,et al.  Au–Pd Nanoparticles Dispersed on Composite Titania/Graphene Oxide-Supports as a Highly Active Oxidation Catalyst , 2015 .

[41]  R. Marschall,et al.  Semiconductor Composites: Strategies for Enhancing Charge Carrier Separation to Improve Photocatalytic Activity , 2014 .

[42]  Ping Liu,et al.  Solvents mediated-synthesis of BiOI photocatalysts with tunable morphologies and their visible-light driven photocatalytic performances in removing of arsenic from water. , 2014, Journal of hazardous materials.

[43]  Yunhui Huang,et al.  Bi4Ti3O12 nanofibers-BiOI nanosheets p-n junction: facile synthesis and enhanced visible-light photocatalytic activity. , 2013, Nanoscale.

[44]  K. Szaciłowski,et al.  Photoelectrochemistry of n-type bismuth oxyiodide , 2013 .

[45]  Nan Zhang,et al.  Defective TiO2 with oxygen vacancies: synthesis, properties and photocatalytic applications. , 2013, Nanoscale.

[46]  M. Seery,et al.  A review on the visible light active titanium dioxide photocatalysts for environmental applications , 2012 .

[47]  Nan Wang,et al.  TiO2 nanoparticles assembled on graphene oxide nanosheets with high photocatalytic activity for removal of pollutants , 2011 .

[48]  Xiaobo Chen,et al.  Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals , 2011, Science.

[49]  T. Xie,et al.  Low-Temperature Synthesis and High Visible-Light-Induced Photocatalytic Activity of BiOI/TiO2 Heterostructures , 2009 .

[50]  Hexing Li,et al.  Preparation of an active SO42-/TiO2 photocatalyst for phenol degradation under supercritical conditions , 2005 .

[51]  A. Fujishima,et al.  Electrochemical Photolysis of Water at a Semiconductor Electrode , 1972, Nature.

[52]  M. Haghighi,et al.  Fabrication of nanostructured flowerlike p-BiOI/p-NiO heterostructure and its efficient photocatalytic performance in water treatment under visible-light irradiation , 2018 .