4.6 Article

Nitrogen and Sulfur Co-Doped Graphene Quantum Dots Anchored TiO2 Nanocomposites for Enhanced Photocatalytic Activity

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Engineering, Chemical

Hybrid biochar supported transition metal doped MnO2 composites: Efficient contenders for lithium adsorption and recovery from aqueous solutions

Urooj Kamran et al.

Summary: Novel nanocomposites (Nix-MnO2/BC) with efficient Li+ adsorption and desorption performances were synthesized by decorating hybrid biochar surfaces with nickel-doped MnO2 nanorods. The Ni0.01-MnO2/BC nanocomposite exhibited the highest Li+ uptake under optimized conditions, showcasing great potential for broad-scale Li+ adsorption and recovery applications.

DESALINATION (2022)

Article Chemistry, Physical

Oxygen vacancy mediated charge transfer expediting over GQDs/TiO2 for enhancing photocatalytic removal of Cr (VI) and RhB synchronously

Xue Bai et al.

Summary: This study investigated the redox activity of Graphene quantum dots/TiO2 (GQDs/TiO2) hybrid during water treatment under visible light irradiation. The introduction of oxygen vacancy (V-o) in TiO2 was found to expedite charge transfer and enhance the photocatalytic activity. The findings suggest that the presence of V-o induces visible light excitation, quick charge separation, and effective transmission between GQDs and TiO2, resulting in improved performance in Cr (VI) and RhB removal system.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Article Environmental Sciences

Chemically modified sugarcane bagasse-based biocomposites for efficient removal of acid red 1 dye: Kinetics, isotherms, thermodynamics, and desorption studies

Urooj Kamran et al.

Summary: This study investigated novel eco-friendly and economically favorable chemically modified biosorbents and biosomposites from sugarcane bagasse for efficient removal of Acid red 1 dye from wastewater. The fabricated materials exhibited high adsorption capacity due to their large specific surface area and excessive functional active binding sites. Kinetic and isothermal studies showed that the experimental data fitted well with pseudo 2nd order and Langmuir model. Thermodynamics analysis revealed that the adsorption process was spontaneous, feasible, and exothermic. Selective adsorption studies indicated that the materials exhibited greater affinity for dye molecules and were not affected by co-existing metallic ions. The loaded dye molecules could be extracted for reusability, making the materials a potential candidate for commercial scale dye removal applications from industrial wastewater.

CHEMOSPHERE (2022)

Article Chemistry, Physical

A nanoporous Three-dimensional graphene aerogel doped with a carbon quantum Dot-TiO2 composite that exhibits superior activity for the catalytic photodegradation of organic pollutants

Shen Shen et al.

Summary: In this study, a novel 3D graphene aerogel doped with carbon quantum dots decorated TiO2 nanosheets was successfully fabricated and applied as an efficient catalyst for degrading organic pollutants in aqueous solutions under visible-light irritation. The unique structure of the 3D graphene aerogel provided fast charge transfer channels, leading to significantly higher degradation rates compared to CDs-TNs and 3DGA alone. Additionally, the 3DGA@CDs-TNs exhibited excellent stability and recyclability during the experiments, confirming its durability and practicality.

APPLIED SURFACE SCIENCE (2021)

Article Chemistry, Multidisciplinary

Transparent graphene quantum dot/amorphous TiO2 nanocomposite sol as homogeneous-like photocatalyst

Thammanoon Thaweechai et al.

Summary: The transparent nanocomposite sol of graphene quantum dot and amorphous TiO2 (GQD/a-TiO2) showed enhanced photocatalytic activity in degradation of RhB due to the interactions between surface functional groups on GQD sheets and a-TiO2, leading to band gap narrowing and synergistic effects. The smaller size of GQD facilitated greater extent of interactions at nanoscopic level, resulting in improved photocatalytic performance.

JOURNAL OF NANOPARTICLE RESEARCH (2021)

Article Chemistry, Multidisciplinary

Graphene Quantum Dots Decorated TiO2 Nanostructures: Sustainable Approach for Photocatalytic Remediation of an Industrial Pollutant

Suprabhat Sarkar et al.

Summary: An efficient photocatalytic system comprised of liquid exfoliated graphene quantum dots (GQDs) and TiO2 has been developed, with the catalyst containing 2% GQDs and TiO2 nanotubes exhibiting a high degradation efficiency of 96.7% towards methylene blue under visible light irradiation. The study also indicates the reusability of the photocatalyst through multiple cycles. The synthesis of metal-free GQDs plays a crucial role in extending visible light absorption and enhancing electron-hole separation in the nanocomposites, resulting in a lower band gap.

CHEMISTRYSELECT (2021)

Article Chemistry, Physical

Preparation of graphene-TiO2 photocatalysis materials by laser-induced hydrothermal method

Zhiru Yang et al.

Summary: Layered porous graphene prepared by laser irradiation of double-layer polymer shows better quality and significantly enhances dye degradation efficiency as a photocatalyst. The introduction of graphene can promote the separation of photogenerated electrons and holes, and experimental results indicate that O-2(-) and h(+) species are the main reactive species in the reaction system.

COLLOID AND INTERFACE SCIENCE COMMUNICATIONS (2021)

Article Materials Science, Multidisciplinary

In-situ growth of TiO2 phase junction nanorods with Ti3+ and oxygen vacancies to enhance photocatalytic activity

Zhonghao Ji et al.

Summary: In this study, titanium dioxide phase junction nanorods with Ti3+ and oxygen vacancies were successfully prepared and utilized for photocatalytic removal of gas phase mercury, showing significantly enhanced efficiency compared to commercial P25. The synergy between phase junction, Ti3+, and O-v in promoting electron-hole separation and transfer efficiency was demonstrated, providing new insights into effective solar energy utilization and photocatalyst design.

MATERIALS RESEARCH BULLETIN (2021)

Article Green & Sustainable Science & Technology

Functionalized graphene quantum dots for dye-sensitized solar cell: Key challenges, recent developments and future prospects

Savisha Mahalingam et al.

Summary: Graphene quantum dots (GQDs) with outstanding properties can be chemically modified and functionalized for high-performance dye-sensitized solar cells. Optimizing electron transport and electrolyte can further enhance the efficiency of GQD-DSSC.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2021)

Review Materials Science, Multidisciplinary

Carbon Dots for Photocatalytic Degradation of Aqueous Pollutants: Recent Advancements

Kamran Akbar et al.

Summary: The text discusses the significant progress made by humanity in technology, domestic, and industrial sectors, but highlights the pollution caused to the planet as a result. The focus is on aquatic pollution, with the introduction of carbon dots as a promising material for efficient removal of aqueous pollutants through photodegradation. The unique properties of carbon dots make them an ideal candidate for solar-driven chemical reactions in the degradation of aqueous pollutants.

ADVANCED OPTICAL MATERIALS (2021)

Article Chemistry, Multidisciplinary

Grape Seed Extract Assisted Synthesis of Dual-Functional Anatase TiO2 Decorated Reduced Graphene Oxide Composite for Supercapacitor Electrode Material and Visible Light Photocatalytic Degradation of Bromophenol Blue Dye

Subramanian Ramanathan et al.

Summary: The grape seed soxhlet extract was found to be a cost-effective reducing agent for preparing GRGO, which showed superior electrochemical performance and photocatalytic activity when combined with TiO2 to form a nanocomposite. The material exhibited high specific capacitance and good stability, making it suitable for applications in supercapacitors and visible light photocatalysis.

ACS OMEGA (2021)

Article Chemistry, Inorganic & Nuclear

Functionalized titanate nanotubes for efficient lithium adsorption and recovery from aqueous media

Urooj Kamran et al.

JOURNAL OF SOLID STATE CHEMISTRY (2020)

Article Engineering, Electrical & Electronic

Photoelectric properties of SnO2 decorated by graphene quantum dots

Yun Lei et al.

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING (2019)

Article Chemistry, Multidisciplinary

Carbothermal Reduction Induced Ti3+ Self-Doped TiO2/GQD Nanohybrids for High-Performance Visible Light Photocatalysis

Jialin Tang et al.

CHEMISTRY-A EUROPEAN JOURNAL (2018)

Article Materials Science, Multidisciplinary

Size controlled synthesis of TiO2 nanoparticles by modified solvothermal method towards effective photo catalytic and photovoltaic applications

Venkatraman Madurai Ramakrishnan et al.

MATERIALS RESEARCH BULLETIN (2018)

Article Materials Science, Multidisciplinary

Photocatalytic degradations of three dyes with different chemical structures using ball-milled TiO2

Jing Miao et al.

MATERIALS RESEARCH BULLETIN (2018)

Article Engineering, Electrical & Electronic

Microstructure and Photocatalytic Properties of TiO2-Reduced Graphene Oxide Nanocomposites Prepared by Solvothermal Method

D. Li et al.

JOURNAL OF ELECTRONIC MATERIALS (2018)

Article Marine & Freshwater Biology

Preparation and characterization of graphene - TiO2 nanocomposite for enhanced photodegradation of Rhodamine-B dye

Mohamed H. H. Ali et al.

EGYPTIAN JOURNAL OF AQUATIC RESEARCH (2018)

Article Chemistry, Multidisciplinary

Improved Solar-Driven Photocatalytic Activity of Hybrid Graphene Quantum Dots/ZnO Nanowires: A Direct Z-Scheme Mechanism

Mandi Ebrahimi et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2017)

Article Chemistry, Physical

N, S co-doped graphene quantum dots-graphene-TiO2 nanotubes composite with enhanced photocatalytic activity

Hongwei Tian et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2017)

Article Green & Sustainable Science & Technology

Degradation of methylene blue as a pollutant with N-doped graphene quantum dot/titanium dioxide nanocomposite

Hossein Safardoust-Hojaghan et al.

JOURNAL OF CLEANER PRODUCTION (2017)

Article Chemistry, Physical

Effect of graphene thickness on photocatalytic activity of TiO2-graphene nanocomposites

Malgorzata Aleksandrzak et al.

APPLIED SURFACE SCIENCE (2015)

Article Chemistry, Multidisciplinary

Electromagnetic interference shielding effectiveness of high-density polyethylene composites reinforced with multi-walled carbon nanotubes

Yoon-Ji Yim et al.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2015)

Article Materials Science, Multidisciplinary

Three Colors Emission from S,N Co-doped Graphene Quantum Dots for Visible Light H2 Production and Bioimaging

Dan Qu et al.

ADVANCED OPTICAL MATERIALS (2015)

Article Nanoscience & Nanotechnology

TiO2 Nanotube Array-Graphene-CdS Quantum Dots Composite Film in Z-Scheme with Enhanced Photoactivity and Photostability

Jiangjun Xian et al.

ACS APPLIED MATERIALS & INTERFACES (2014)

Article Multidisciplinary Sciences

Gram-scale synthesis of single-crystalline graphene quantum dots with superior optical properties

Liang Wang et al.

NATURE COMMUNICATIONS (2014)

Article Chemistry, Multidisciplinary

Graphene Quantum Dots Derived from Carbon Fibers

Juan Peng et al.

NANO LETTERS (2012)

Article Chemistry, Multidisciplinary

Macroscopic Wall Number Analysis of Single-Walled, Double-Walled, and Few-Walled Carbon Nanotubes by X-ray Diffraction

Don N. Futaba et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2011)

Article Nanoscience & Nanotechnology

Thermal and mechanical interfacial properties of epoxy composites based on functionalized carbon nanotubes

Fan-Long Jin et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2011)

Article Chemistry, Physical

What is Degussa (Evonik) P25? Crystalline composition analysis, reconstruction from isolated pure particles and photocatalytic activity test

B. Ohtani et al.

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY (2010)

Article Chemistry, Physical

Colloidal Graphene Quantum Dots

Liang-shi Li et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2010)

Article Chemistry, Physical

Tuning the Charge-Transfer Property of PbS-Quantum Dot/TiO2-Nanobelt Nanohybrids via Quantum Confinement

Defa Wang et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2010)

Article Chemistry, Physical

Efficient polysulfide electrolyte for CdS quantum dot-sensitized solar cells

Yuh-Lang Lee et al.

JOURNAL OF POWER SOURCES (2008)

Article Chemistry, Physical

Explaining the enhanced photocatalytic activity of Degussa P25 mixed-phase TiO2 using EPR

DC Hurum et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2003)

Article Multidisciplinary Sciences

Visible-light photocatalysis in nitrogen-doped titanium oxides

R Asahi et al.

SCIENCE (2001)