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Article
Chemistry, Physical
Tianyu Zhou et al.
Summary: In order to utilize solar energy for water pollution remediation, a tailored graphite carbon nitride (CN) with active sites exposure, visible-light harvest, and charge separation efficiency was synthesized. The optimized sample exhibited enhanced visible-light capture ability, more active sites exposure, and improved charge separation efficiency, leading to a significantly higher degradation rate of pollutants compared to bulk counterparts. The mechanism of the photodegradation reaction was proposed based on test characterization and density functional theory analysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yujie Liu et al.
Summary: Traditional defect engineering and doping strategies are commonly used to enhance H-2 evolution, but their uncontrollability may not always result in efficient activity. This study presents a defect-induced heteroatom refilling strategy to synthesize carbon nitrides with controlled heteroatom introduction on efficient N1 sites. The refilling of B, P, and S sites shows stronger H2O adsorption and dissociation capacity compared to traditional doping, making it an optimal pathway for H-2 production. The heteroatom-refilled catalysts exhibit a high internal electric field strength, enabling fast electron transfer and achieving a hydrogen production rate of up to 20.9 mmol g(-1) h(-1). This work provides insights into controlled defect engineering of photocatalysts and offers a universal modification strategy for heteroatoms and co-catalyst systems in H-2 production.
Article
Chemistry, Multidisciplinary
Peiyao Dong et al.
Summary: Chemical doping of organic semiconductors can greatly improve their optoelectronic performance, but the correlation between doping counter ions and charge-transport mechanism is not well understood. This study reveals that the anion-dependent degree of delocalization of lithium-based dopants plays a significant role in determining the doping kinetics and conductivity of organic hole transport layer. By modulating the anion dissociation, the efficiency and stability of organic electronics can be simultaneously improved.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Grayson Zhi Sheng Ling et al.
Summary: Solar photocatalysis using metal-free graphitic carbon nitride (g-C3N4) is an appealing technique for sustainable energy generation and pollution-free environment. However, the low-dimensional structure of g-C3N4 hinders its performance due to slow reaction kinetics and rapid recombination of photogenerated carriers. This review focuses on the engineering of 2D cocatalysts to improve the efficiency and stability of g-C3n4, and provides insights into the charge dynamics and structure-performance relationship.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mengxi Tan et al.
Summary: The construction of an ultrathin 2D ZnIn2S4/g-C3N4 Z-scheme heterojunction through in-situ growth of ZnIn2S4 on g-C3N4 allows for greatly improved hydrogen evolution performance by carefully regulating the interface structure. The optimized photocatalyst demonstrates significant photocatalytic activity without Pt, attributing to the synergistic effect of abundant active sites, enhanced photoresponse, and valid interfacial charge transfer channels. Spectroscopic analyses and density functional theory (DFT) calculations confirm that the enhanced photocatalytic performance is also due to promoted interfacial charge separation in the 2D Z-scheme heterojunction.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mingyu Sang et al.
Summary: This study introduces a new type of ultrasensitive and stretchable gold-doped silicon nanomembrane epidermal temperature sensor array, which shows high thermal sensitivity and scalability for continuous monitoring of body temperature and respiration rate. The technology has the potential for precision diagnosis and disease management.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Azmat Ali Khan et al.
Summary: A multi-heterostructure interface was designed to achieve a double-S-scheme heterojunction between CoAlLa-LDH and porous g-C3N4 on monolayer Ti3C2-MXene. This dual-S-scheme assembly exhibited superior photoactivity for CO2 reduction, resulting in higher production of CO and H-2 gases compared to pristine samples. The interaction between different components and electron rich linkers were identified as key factors contributing to the enhanced charge-transfer separation and overall performance of the composite material.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Environmental
Chengcheng Chu et al.
Summary: In this study, the photocatalytic properties of g-C3N4 for H2O2 production were enhanced by co-modification with cyano group and SnO2 nanocrystal. The modified g-C3N4 showed excellent performance with a H2O2 yield rate of 703.4 mu M g(-1)h(-1) under visible light illumination, indicating a promising approach to improve the photocatalytic activity of g-C3N4.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Bei Yang et al.
Summary: Thermoplasmonics is an promising solution for solar energy conversion, offering enhanced light absorption and scattering, hot carrier generation, and localized/collective heating effects for optimized energy conversion. Material selection and nanostructure design are crucial for achieving higher efficiency. Thermoplasmonics has applications in solar evaporation, photothermal chemistry, and thermophotovoltaic systems.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Rongdi Tang et al.
Summary: In this study, a g-C3N4/PDI-g-C3N4 homojunction was fabricated for piezo-photocatalytic atrazine removal, demonstrating superior performance compared to individual photocatalysis or piezocatalysis. The introduction of PDI facilitated electron migration and enhanced piezoelectricity, with the homojunction promoting photoelectron transfer. The porous structure of the g-C3N4/PDI-g-C3N4 was found to be essential for the enhanced piezoelectricity, leading to a high atrazine degradation rate and H2O2 production during the piezo-photocatalytic process.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
A. Bafekry et al.
Summary: The effects of doping and embedding different atoms on the structural and electronic properties of C6N7 monolayer were investigated. Doped C6N7 with B, N, C, and O atoms were found to be stable and suitable for experimental fabrication. The doped C6N7 monolayers exhibited metallic, dilute-magnetic semiconductor, or half-metal behavior. The embedding of various atoms also affected the electronic and magnetic properties of C6N7.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Applied
Shixian Zhang et al.
Summary: In this study, a Z-scheme porous g-C3N4/ZnFe2O4 photocatalyst was synthesized and used for N-2 photofixation, achieving high efficiency and environmental friendliness.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Qiangtao Zhu et al.
Summary: A simple and effective method for preparing hollow TiO2-SiO2 hybrid spheres without the use of templates, combined with high crystallization and small grain size in calcinated TiO2, is proposed. The prepared hollow spheres demonstrate high photocatalytic activity, and the doping of gold further enhances the activity.
Article
Chemistry, Physical
Peng Chen et al.
Summary: This study reports the rapid self-decomposition of graphitic carbon nitride (g-C3N4) during gas-solid photocatalytic reaction, with the products including CO, CO2, NO2, and NO2-/NO3-. The research reveals the influence of adsorbed hydroxyl groups and photogenerated charge carriers on the instability of the catalyst, and demonstrates that self-decomposition reaction is more thermodynamically favorable than CO2 reduction reaction.
Review
Chemistry, Physical
Takeshi Kondo
Summary: This review gives an overview of the recent reports on the electroanalytical applications of boron-doped diamond (BDD) electrodes. BDD electrodes are highlighted for their wide potential window, low background current, and resistance to fouling, making them useful for sensitive and stable detection of various substances. Surface modification of BDD electrodes and the combination of peripheral technologies to enhance electroanalytical devices equipped with BDD electrodes are also discussed.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Tata Sanjay Kanna Sharma et al.
Summary: This study presents an affordable method for preparing one-dimensional gadolinium oxide nanorods and explores their application in electrochemical sensors. The results show that the sensor exhibits stability, selectivity, and high sensitivity.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Wenbo Liu et al.
Summary: The focus of designing and synthesizing composite catalysts with high photocatalytic efficiency is to regulate nanostructures and optimize heterojunctions. By increasing the contact area between catalysts, additional reaction sites can be established, leading to faster charge carrier transfer and reaction.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Materials Science, Multidisciplinary
Anand Kumar Singh et al.
Summary: This article provides a comprehensive review of the recent advancement in the chemical doping of graphene and its applications. The article includes a brief history and synthesis of graphene, as well as an analysis of different experimental approaches to chemical doping. The potential applications of doped graphene in various fields are also discussed, such as light-emitting diodes, photodetectors, solar cells, energy storage devices, sensors, and medical diagnoses. The article concludes with a discussion on future prospective research work in this area.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Physical
Shilian Yang et al.
Summary: The new copolymer PCON showed significantly improved photocatalytic nitrogen fixation performance, surpassing the efficiency of pristine C3N4 by a factor of 11, without the need for additional cocatalysts. The enhanced performance is attributed to the introduction of new linker units inducing transitions and acting as charge channels and active sites, extending light absorption to near-infrared and improving charge separation and reactive activation. This study highlights the importance of linker engineering in catalyzing photocatalytic reactions using organic-based catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Review
Chemistry, Multidisciplinary
Lei Zhang et al.
Summary: Ammonia, the second most-produced chemical, has wide applications in agriculture and industry. The traditional industrial production of ammonia has significant resource and environmental issues. The newly emerged photocatalytic N-2 reduction reaction (p-NRR) using solar energy without emission shows great potential in achieving sustainable ammonia synthesis. This review summarizes the recent development of g-C3N4-based catalysts for p-NRR and emphasizes the roles of defect engineering and heterojunction construction on g-C3N4 in enhancing photocatalytic performance.
Article
Chemistry, Multidisciplinary
Muhammad Shahid et al.
Summary: In recent years, the electrocatalytic synthesis of ammonia has gained significant attention as a potential alternative to the industrial Haber-Bosch process. This review summarizes the recent progress on highly efficient electrocatalysts based on 2D non-metallic nanomaterial and provides an overview of the synthesis principle and performance indicators of electrocatalysts. The current development and future prospects of electrocatalysts for the N-2 reduction reaction are also discussed.
Article
Chemistry, Physical
Tiantian Li et al.
Summary: A porous intramolecular D-A integrated CN was constructed to boost photocatalytic activity under visible light. The optimal sample CN30 exhibited a significantly higher hydrogen evolution rate and photodegradation rate compared to other CN materials.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Bin Fang et al.
Summary: The development of high-efficient photocatalysts, specifically hollow semiconductor photocatalysts, is crucial for sustainable utilization of solar energy. This paper reviews common hollow semiconductor nanomaterials and their composite photocatalysts, discussing the characteristics, application in solar energy conversion, and understanding of the photocatalytic mechanism. The future challenges lie in designing and optimizing broadband response hollow-structure photocatalysts to enhance solar energy conversion further.
ADVANCED POWDER MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Qingtong Wang et al.
Summary: This review provides a comprehensive summary of the modification methods of g-C3N4 photocatalyst in recent years, including morphology adjustment, co-catalysts, heterostructures, and doping. It details the advantages and disadvantages of different methods, experimental results, and product yield, while also discussing future challenges and development prospects.
ADVANCED FIBER MATERIALS
(2022)
Article
Chemistry, Physical
Azmat Ali Khan et al.
Summary: The multi-heterostructure interface design of CoAlLa-LDH with porous g-C3N4 on monolayer Ti3C2-MXene resulted in a double-S-scheme heterojunction with enhanced charges separation capability. The dual-S-scheme assembly showed higher photoactivity for CO2 reduction under different re-forming systems, with significant improvement in CO and H-2 production compared to pristine counterparts. The synergistic effects of the components and superior charge-transfer separation mechanisms contributed to the promising performance of the layered multicomponent heterojunctions with 2D/2D/2D architecture.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Applied
M. Ikram et al.
Summary: In this study, Ag/cellulose nanocrystal-doped CeO2 quantum dots were synthesized and showed highly efficient catalytic performance in degrading methylene blue and ciprofloxacin in wastewater, particularly in acidic medium. Furthermore, the Ag/CNC-doped CeO2 exhibited significant antimicrobial activity against Gram-negative bacteria in in vitro experiments.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Environmental
Anton N. Petukhov et al.
Summary: The study evaluated the efficiency of membrane-assisted gas absorption for NH3 recovery applications, finding that the NH4SCN:G combination can reach up to 98.96% NH3 recovery but lacks stable efficiency compared to lower-viscosity deep eutectic solvents like NH4SCN:U and NH4SCN:EG, which can achieve up to 98.42% and 98.7% NH3 recovery, respectively.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Dongfeng Sun et al.
Summary: The co-doped graphite carbon nitride catalyst with B atoms and cyano groups exhibited excellent photocatalytic nitrogen fixation performance and stability, attributed to the nitrogen vacancies created by the dopants that enhanced the electron transfer rate and separation efficiency. The nitrogen photofixation rate of the catalyst was significantly higher than that of pure carbon nitride, and the NH4+ generation rate remained stable even after multiple cycles, showcasing its potential for sustainable nitrogen conversion applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Mohib Ullah et al.
Summary: A high-performance and cost-effective NO2-based gas sensor of metal oxides operating at room temperature was developed using a design strategy that combines two-dimensional graphitic carbon nitride and nickel oxide nanosheets to create a three-dimensional hierarchical nanostructure. The optimized nanocomposite showed long-term stability, a low detection limit, and higher selectivity towards NO2 gas. This study provides a new strategy for the formation of heterostructures between metal oxides and g-C3N4 for excellent gas sensitivity and addresses the fabrication of highly potent gas sensors.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Xin Yuan et al.
Summary: The study found that gC3N4@ZIF-8 exhibits superior performance in enhancing TC degradation, with significantly higher degradation rate constant and removal rate compared to gC3N4 alone. Additionally, the optimized material also shows excellent degradation and removal efficacy in RhB and Cr (VI), accelerating pollutant degradation by promoting the formation and transformation of oxygen radicals.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Nancy M. P. Bocken et al.
Summary: The study explores unsustainable business models in different sectors and potential sustainable business model responses, presenting nine dominant unsustainable business model archetypes and corresponding solutions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Green & Sustainable Science & Technology
John Humphreys et al.
Summary: Ammonia synthesis from nitrogen and hydrogen is a crucial chemical process with the development of efficient catalysts being a key focus. New catalysts are being developed to improve efficiency and sustainability in ammonia production. The continued innovation in catalysts for the Haber-Bosch process is essential for the future of green ammonia production.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Chongyi Ling et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Nanoscience & Nanotechnology
Wingkei Ho et al.
ACS APPLIED MATERIALS & INTERFACES
(2015)
Article
Chemistry, Multidisciplinary
Jinshui Zhang et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2012)
