Article
Engineering, Chemical
Junting Gao, Xidong Ma, Tiefeng Xu, Yan Gu, Xiufang Chen, Wenxing Chen, Wangyang Lu
Summary: This study developed new functional pigments by combining commercial inorganic pigments with a novel g-C3N4 photocatalyst through a simple one-step calcination method. These functional pigments exhibited high photocatalytic activity under simulated sunlight and weak white-LED irradiation, and they were successfully applied to multicolored photocatalytic fibers with multiple functions including degradation of organic pollutants and antibacterial properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Muhammad Ali Raza, Huiying Tian, Ziyi Shui, Liangliang Zhu, Meidan Que, Xi Chen
Summary: The development of high-efficient photocatalysts for CO2 reduction is crucial for addressing global energy and environmental challenges. This study presents a 2D/2D hierarchical heterostructure of NiFeV layered double hydroxide (LDH) nanosheets and g-C3N4, which significantly enhanced the photocatalytic performance. The weight ratio of g-C3N4 to NiFeV-LDH had a significant impact on the catalytic activity, with the highest yields of CH4 and CO generated when the ratio was 15%.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Gizem Yanalak, Seda Yilmaz, Zafer Eroglu, Emre Aslan, Onder Metin, Imren Hatay Patir
Summary: New photocatalysts consisting of 2D/2D heterojunction of graphitic carbon nitride (gCN) and molybdenum disulfide (MoS2) semiconductors doped with nickel (Ni) or cobalt (Co) were fabricated for the photocatalytic hydrogen evolution reaction (HER) under visible light illumination. The prepared gCN/MoS2-Ni and gCN/MoS2-Co photocatalysts exhibited enhanced HER activities and stabilities compared to pristine gCN and binary gCN/MoS2 heterojunctions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Mongkol Tipplook, Gasidit Panomsuwan, Tomohito Sudare, Katsuya Teshima
Summary: In this study, a photocatalyst with a broad active spectrum was prepared and successfully applied for bacterial disinfection. The photocatalyst exhibited unique physical and chemical properties, as well as a broad light absorption spectrum. Compared to traditional photocatalysts, the photocatalyst showed higher catalytic activity under visible light and near-infrared exposure.
ACS APPLIED NANO MATERIALS
(2022)
Article
Environmental Sciences
Siva Chidambaram, Mohan Kumar Ganesan, Muthusamy Sivakumar, Saravanan Pandiaraj, Muthumareeswaran Muthuramamoorthy, Santhosh Basavarajappa, Abdulaziz Abdullah Al-Kheraif, M. L. Aruna Kumari, Andrews Nirmala Grace
Summary: The integration of semiconducting nanostructures with noble metal nanoparticles is increasingly favored for cost efficient energy and environmental applications. A facile aqueous synthesis method was reported to produce polymer-capped gold nanoparticles on free-standing 2D layered zinc oxide structures, resulting in ZnO/Au nanocomposites. The study found that the concentration of Au nanoparticles promoted the preferential growth of ZnO along the (002) wurtzite plane, with the resulting structures exhibiting improved absorptivity along the visible spectrum.
Article
Chemistry, Physical
Yelan Xiao, Yecheng Leng, Xinxin Lu, Shun-Cheung Cheng, Hao Huang, Man-Kit Tse, Jiechun Liang, Wenguang Tu, Chi-Chiu Ko, Xi Zhu, Lu Wang, Yong Zhou, Yingfang Yao, Zhigang Zou
Summary: Photocatalytic radical fluoroalkylation is an important method to prepare organofluorine compounds. This study introduces a cost-effective and recyclable heterogeneous photocatalysis using cyano-modified graphitic carbon nitride as the photocatalyst. The photocatalytic process is attributed to the long-lived triplet excited states and the strong interaction between the catalyst and substrate. Moreover, the catalyst shows high performance, wide reaction scope, and can be easily recovered and reused for multiple catalytic cycles.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Dongyang He, Hao Yang, Dexin Jin, Jiao Qu, Xing Yuan, Ya-nan Zhang, Mingxin Huo, Willie J. G. M. Peijnenburg
Summary: Research demonstrates that by tuning reaction parameters, the synthesized g-C3N4 can achieve extremely high photocatalytic activity, outperforming P25 TiO2 and other g-C3N4-based nanocomposites with lower catalyst consumption, and requiring only short ultrasonic pretreatment for excellent performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Energy & Fuels
Shuaijun Wang, Jinqiang Zhang, Bin Li, Hongqi Sun, Shaobin Wang
Summary: Graphitic carbon nitride (g-C3N4), as a polymeric semiconductor, is gaining attention for photocatalytic energy conversion due to its easy accessibility, metal-free nature, low cost, and environmentally friendly properties. This review explores the latest progress of g-C3N4-based materials in visible-light-driven water splitting to hydrogen, discussing various engineering strategies and synthesis methods, aiming to promote further development in this emerging field.
Review
Chemistry, Multidisciplinary
Amarajothi Dhakshinamoorthy, Anton Lopez-Frances, Sergio Navalon, Hermenegildo Garcia
Summary: Light can enhance ozone efficiency in advanced oxidation processes (AOPs) through direct ozone photolysis or by using a photocatalyst that can be excited by UV-Vis or solar light. This review summarizes literature data on the combination of ozone and the g-C3N4 photocatalyst for water treatment. The combination shows higher efficiency than the individual treatments, attributed to the synergy between g-C3N4's efficient electron quenching by O-3 and the generation of hydroxyl radicals.
Article
Environmental Sciences
Maryam Afsharpour, Somayeh Amoee
Summary: In this study, zinc oxide nanohybrids based on functionalized bio-silica were synthesized and applied for the degradation of Congo red under visible light. The results showed that the band gap of bio-silica@ZnO hybrids decreased, leading to enhanced photocatalytic properties. Among the hybrids, SiO2@ZnO hybrid prepared from chitosan-based amino-functionalized silica exhibited the best photocatalytic performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Chemistry, Multidisciplinary
Artem S. Belousov, Evgeny Suleimanov, Diana G. Fukina
Summary: Heterogeneous photocatalysis is considered an attractive alternative route for converting solar energy into chemical energy, with a focus on new materials sensitive to visible light. Pyrochlore oxides have shown promise as visible light-responsive photocatalysts due to their compositional flexibility and opportunities for enhancing electron/hole mobility, with recent progress in various applications and strategies for improving their photocatalytic activity.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Ke Sun, Yijun Zhang, Di Zhu, Xiaotong Peng, Jing Zhang, Tao Gong, Ming Ma, Pu Xiao
Summary: This review comprehensively discusses the applications and advantages of carbon-family-based photocatalysts in visible light-induced photopolymerization, and introduces newly developed carbon-family nanomaterials as potential prospects for photopolymerization.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Praveen P. Singh, Vishal Srivastava
Summary: Graphitic carbon nitride (g-C3N4) has attracted broad interdisciplinary attention as a metal-free and visible-light-responsive photocatalyst in the field of solar energy conversion and environmental remediation. This review provides an overview of the latest advances in g-C3N4 photocatalysts and their applications in chemical transformations.
Article
Engineering, Environmental
Hongchen Shen, David P. Durkin, Ashlee Aiello, Tara Diba, John Lafleur, Jason M. Zara, Yun Shen, Danmeng Shuai
Summary: Photocatalysis using visible-light-responsive composites shows promise in inactivating environmental pathogens, with demonstrated broad-spectrum biofilm inhibition and eradication. The composites exhibit excellent performance in controlling pathogenic biofilms and inhibiting biofilm development from multiple bacterial species, providing insights into the mechanism of photocatalytic reaction with microbiological systems.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Shenghong Dong, Mingzhe Chen, Jiarui Zhang, Jinzhu Chen, Yisheng Xu
Summary: The plasmonic photocatalyst Pd/g-C3N4 shows excellent catalytic activity in the photo-induced hydrogenation of biomass-based aldehydes under visible-light irradiation. The Pd atom is identified as the true catalytic active site, and the photo-promoted reduction mainly occurs through the effect of surface plasmon resonance induced by noble metal nanoparticles.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Materials Science, Multidisciplinary
Kavan Sheth, P. Kondaiah, K. Niranjan, Sandip Bysakh, G. Srinivas, Harish C. Barshilia
Article
Materials Science, Multidisciplinary
K. Niranjan, Paruchuri Kondaiah, Arup Biswas, V. Praveen Kumar, G. Srinivas, Harish C. Barshilia
Summary: By adjusting the thickness and composition of individual layers, the W/WAlSiN/SiON/SiO2 solar absorber coating was designed with high solar absorptance and low thermal emissivity. The refractive indices and extinction coefficients of the layers in the multilayer stack decrease gradually, enhancing solar absorption with gradient refractive index.
Article
Energy & Fuels
K. Niranjan, Alex Carling Plaza, Theo Grifo, Martin Bordas, Audrey Soum-Glaude, Harish C. Barshilia
Summary: The study presents a solar selective coating fabricated using a specific sputtering system, demonstrating high thermal stability, superior mechanical properties, and excellent resistance to ageing. Results from various tests under different conditions indicate that the coating exhibits high thermophysical resistance and stable optical performance.
Article
Energy & Fuels
Pooja Ranganathan, V Amrutha, Harish C. Barshilia
Summary: The study focuses on enhancing the optical properties of metals through heat treatment and investigates the effects of oxidation temperature and time on the solar absorptance and thermal emittance. Under optimized conditions, the heat-treated SS 304 sample showed high absorptance and low emittance. A plausible model for the high optical absorption in oxidized surfaces with low emittance is rationalized and validated through the experiment.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Energy & Fuels
Adhila T. K., Nasima Khatun, Somnath C. Roy, Harish C. Barshilia
Summary: The experimental results demonstrate that slanted, kinked, and straight silicon nanowire arrays create a broadband omnidirectional light-harvesting structure, with slanted and kinked nanowires having better light trapping capabilities than straight ones. By manipulating the geometrical parameters, the light absorption in these nanowires can be enhanced. P-type SiNWs exhibit less reflection than n-type SiNWs, making them promising materials for photoelectrochemical water splitting applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Green & Sustainable Science & Technology
Deepanjana Adak, Raghunath Bhattacharyya, Harish C. Barshilia
Summary: Solar energy-based devices require self-cleaning coatings on glass surfaces to maintain performance. Traditional sol-gel processes are suitable for small-scale production, while spray based processes are more cost-effective for large-scale production. The self-cleaning coatings can be hydrophobic or hydrophilic, and selecting the right materials and parameters is important to maintain transparency and reflectivity. This review explores the principles, deposition techniques, performance evaluation, and lifespan of these coatings, as well as recent advances in atmospheric pressure plasma deposition and the use of non-fluorinated polymer materials.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Harish C. Barshilia, R. V. Lakshmi, Parthasarathi Bera, Bharathi Bai J. Basu, G. Srinivas, V. Praveen Kumar, N. T. Manikandanath
Summary: This study describes a hybrid multilayer solar absorber coating and investigates the effect of adding an ormosil passivation layer on its performance. The results show that the ormosil layer improves the stability and thermal stability of the coating, making it suitable for applications such as solar steam generation.
Article
Energy & Fuels
Harish C. Barshilia, K. Niranjan, G. Srinivas, Siju John, N. T. Manikandanath
Summary: The study has developed a multilayer solar selective coating that maintains high absorption and low thermal emittance at high temperatures, suitable for CSP applications. The unique coating design enhances thermal stability and is suitable for evacuated receiver tubes in concentrated solar power plants.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Multidisciplinary
Sharon J. Paul, Indu Elizabeth, Shubhda Srivastava, Jai S. Tawale, Prakash Chandra, Harish C. Barshilia, Bipin K. Gupta
Summary: This article presents a novel and simple design of a wearable epidermal sensor that can detect and differentiate various stimuli and human movements, and has the potential for real-time health monitoring. The sensor demonstrates high sensitivity, durability, and fast response time, meeting the requirements of wearable electronics and electronic skin.
Article
Materials Science, Multidisciplinary
Arunchandran Chenan, J. Jyothymol, S. Abirami, Venkataramana Bonu, Harish C. Barshilia
Summary: The corrosion resistance properties of Ti/TiN and TiAl/TiAlN nanolayered multilayered coatings deposited on Ti6Al4V alloy substrates were investigated. The coatings had a bi-layer thickness of approximately 3.5 nm/4 nm and a total thickness of approximately 9 μm. Electrochemical impedance spectroscopy (EIS) was used to investigate the corrosion properties of the coatings immersed in 3.5 wt% NaCl solution for 30 days. The EIS investigation revealed that corrosion occurred due to the penetration of electrolyte and oxygen through the micro/nanopores present in the coatings. It was found that the TiAl/TiAlN coating offered superior corrosion protection compared to the Ti/TiN coating during the immersion study. Potentiodynamic polarization studies showed that both coatings exhibited passive behavior, with the formation of a passive film enhancing the barrier properties and providing anodic protection to the underlying alloy.
Review
Materials Science, Multidisciplinary
Venkataramana Bonu, Harish C. Barshilia
Summary: This paper provides a detailed overview of the effect of temperature on the solid particle erosion process and different types of erosion-resistant coatings developed for gas turbine compressor blades over the last four decades. The paper discusses erosion mechanisms, erosion by different erodent media, and the influence of erosion on gas turbine engines. It also examines the erosion rate trend with increasing temperature for different materials and the role of oxidation and bonding nature in high-temperature erosion.
Article
Energy & Fuels
Shrirang M. M. Pathak, V. Praveen Kumar, Venkataramana Bonu, Leon Mishnaevsky Jr, R. V. Lakshmi, Parthasarathi Bera, Harish C. C. Barshilia
Summary: Wind energy is considered a clean energy source and efforts are being made to protect wind turbine blades from erosion caused by various factors. It is also important to address the waste produced in turbine fabrication and end-of-life phases. In this study, cellulose microparticles and microfibers were used to reinforce water-based polyurethane coatings, resulting in improved erosion resistance.
Article
Nanoscience & Nanotechnology
Ramarajan Ramanathan, Selvakumar Nagarajan, Venkataramana Bonu, Priyanka Patel, Shubhangi Jamdar, Harish C. Barshilia, Ramesh Chandra Mallik
Summary: Thin film technology offers possibilities and advancements in gas sensor devices. Sb-doped nanometer thin-SnO2 films were developed for CO/NH3 gas detection. The structural, surface, optical, and resistivity properties were investigated as a function of film thickness. ATO thin films showed enhanced response towards CO/NH3 gas detection with better stability and selectivity for CO gas. The results indicate the potential application of nanometer ATO films for enhanced gas detection.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
S. Silpa, G. Srinivas, Arup Biswas, Harish C. Barshilia, Vinayak B. Kamble
Summary: Tapping the potential of solar thermal energy requires spectrally selective solar absorber coatings, which lead to high photothermal efficiency. Micro-cavities are known to dramatically enhance or suppress light absorption and emission in a directional manner and are used in nanophotonics, photodetectors, lasing, etc.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Energy & Fuels
Deepanjana Adak, Poulami Mondal, Raghunath Bhattacharyya, Sandip Bysakh, Harish C. Barshilia
Summary: In this study, a durable superhydrophilic coating with photocatalytic and anti-reflecting properties was successfully prepared by sol-gel-based block copolymers assisted evaporation-induced self-assembly (EISA) method. The coating showed outstanding mechanical durability, good water contact angle, photo-catalytic capabilities, improved optical transmittance, and reduced refractive index value.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)