Article
Environmental Sciences
Devina Rattan Paul, Satya Pal Nehra
Summary: Graphitic carbon nitride (GCN) has shown great potential in photocatalytic degradation of organic dyes and antibacterial activities, particularly in degrading cationic dyes efficiently. The synthesized GCN holds promise for effective remediation of organic pollutants and bacterial disinfection in wastewater treatment applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Qiang Chen, Bing Wan, Paijin Zhu, Shuxia Xu, Yi Huang
Summary: Pt-doped g-C3N4 photocatalyst showed enhanced photosensitization performance by improving light absorption range and efficiency. The photocatalytic degradation of Rhodamine B was significantly increased from 50 to 90% using Pt-doped g-C3N4. The method has the advantages of simple operation, low cost, and high efficiency for removing dyes in wastewater utilizing sunlight.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Xinyue Wang, Jiaqi Meng, Xueyan Zhang, Yunqing Liu, Miao Ren, Yuxin Yang, Yihang Guo
Summary: This study developed a self-modification strategy to prepare carbon-deficient and oxygen-doped g-C3N4 catalyst, which showed high efficiency in photocatalytic removal of p-nitrophenol and atrazine. The mechanism behind this efficiency is the synergistic effect of carbon vacancies and oxygen doping sites in generating abundant active oxygen species.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Radim Skuta, Vlastimil Matejka, Krystof Foniok, Aneta Smykalova, Daniel Cvejn, Roman Gabor, Martin Kormunda, Bedrich Smetana, Vlastimil Novak, Petr Praus
Summary: The synthesis of P-doped graphitic carbon nitride (PCN) by in situ doping via co-pyrolysis of melamine and hexachlorocyclotriphosphazene (HCCP) is being investigated. The results show continuous enrichment of graphitic carbon nitride (CN) by phosphorus, which is believed to predominantly substitute carbon in the structure. PCN with 2.44 wt% of phosphorus shows the highest photodegradation activity under VIS irradiation, indicating the potential of P-doped PCN in photocatalytic applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Energy & Fuels
Zhao Mo, Keqiang Xu, Limin Yu, Tianyu Huang, Yanhua Song, Junjie Yuan, Cheng Ding, Yucheng Lei, Huaming Li, Hui Xu
Summary: A highly active Fe-doped tubular graphitic carbon nitride (Fe-TCN) with excellent photocatalytic activity for ammonia synthesis is reported. Fe-TCN incorporates Fe species as active sites to efficiently adsorb and activate N-2 molecules on the surface, while the surface-active Fe species act as electron trap sites, significantly improving the NH3 conversion efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Chemistry, Multidisciplinary
Xinnan Yu, Sue-Faye Ng, Lutfi Kurnianditia Putri, Lling-Lling Tan, Abdul Rahman Mohamed, Wee-Jun Ong
Summary: Graphitic carbon nitride (g-C3N4) is an ideal metal-free photocatalyst for artificial photosynthesis, but its original structure suffers from limitations which can be significantly improved through defect engineering for enhanced photocatalytic activity, holding great significance for solar energy conversion advancements.
Article
Chemistry, Physical
Zhao Mo, Zhihuan Miao, Pengcheng Yan, Peipei Sun, Guanyu Wu, Xingwang Zhu, Cheng Ding, Qiang Zhu, Yucheng Lei, Hui Xu
Summary: The ideal photocatalyst for photocatalytic water splitting should have strong light absorption, fast charge separation/transfer ability, and abundant active sites. Heteroatom doping offers a promising approach for optimizing photocatalytic activity. In this study, boron (B) and sulfur (S) dopants were simultaneously introduced into graphitic carbon nitride (g-C3N4) nanotubes using a supramolecular self-assembly strategy. The developed B and S co-doped g-C3N4 nanotubes exhibited outstanding photocatalytic performance, achieving a conversion rate of H2O to H-2 of 9.321 mmol g(-1)h(-1), with an external quantum efficiency of 5.3% under irradiation at λ = 420 nm. The introduction of B dopants facilitated H2O adsorption and interatomic electron transfer, while S dopants promoted the oxidation ability of g-C3N4 and inhibited recombination. Furthermore, the simultaneous introduction of B and S optimized the electronic and energy level structures of g-C3N4 for efficient charge transfer, ultimately maximizing photocatalytic performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Feng Liu, Wencheng Li, Lu Wang, Xi Rao, Shaohui Zheng, Yongping Zhang
Summary: Doping sulfur and strontium elements in graphitic carbon nitride can improve its photocatalytic activity by narrowing the band gap, forming an intraplane heterojunction, enhancing light absorption and carrier transportation, increasing molecular buckling and specific surface area. These factors synergistically contribute to the improved performance of graphitic carbon nitride.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Environmental Sciences
Fengping Hu, Wendong Luo, Caihua Liu, Hongling Dai, Xing Xu, Qinyan Yue, Li Xu, Gaoping Xu, Yan Jian, Xiaoming Peng
Summary: In this study, phosphorus-doped strong magnetic graphitic carbon nitride hybrids composites were prepared and shown to have high photocatalytic activity for efficient degradation of tetracycline. The electron spin resonance experiment indicated that radicals were the main factor for TC decomposition, while persulfate could enhance the activity of the hybrid system, with a maximum removal rate of 99.6% predicted by the response surface methodology.
Article
Chemistry, Multidisciplinary
Z. Mo, G. Wu, P. Yan, X. Zhu, J. Qian, Y. Lei, L. Xu, H. Xu, H. Li
Summary: This study reports the successful synthesis of ultrathin oxygen-engineered g-C3N4 (UOCN) by a bottom-up strategy using a gaseous sacrificial agent-induced template. The UOCN exhibits efficient separation of photogenerated carriers, enhanced utilization of sunlight, and improved photocatalytic hydrogen evolution. The photocatalytic performance of UOCN is significantly better than that of bulk carbon nitride, and the H2 evolution rate is extended to longer wavelengths. This work presents a practical strategy for the design of innovative photocatalysts for energy innovation.
MATERIALS TODAY CHEMISTRY
(2022)
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
Engineering, Environmental
Qiao Wang, Mengyao Xiao, Zhitian Peng, Chao Zhang, Xing Du, Zhihong Wang, Wei Wang
Summary: A novel visible light emitting diode (LED) photocatalysis combined ultrafiltration (UF) system driven by metal-free O-doped C3N4 was established for effective sulfamethazine removal. The study demonstrated that 8%O-C3N4 exhibited the optimal degradation efficiency and the system showed intensified photoactivity.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Xin Bai, Man Li, Jinlun Li, Xi Rao, Shaohui Zheng, Yongping Zhang
Summary: The study showed that sulfur and yttrium co-doped graphitic carbon nitride photocatalyst exhibits outstanding photocatalytic performance due to the doping improving the separation and migration of electron-hole pairs, narrowing the band gap, and increasing visible light absorption.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Environmental
Petr Praus, Aneta Smykalova, Krystof Foniok, Vlastimil Novak, Jan Hrbac
Summary: Bare and oxygen doped graphitic carbon nitride were synthesized by thermal polymerization and mechanical mixtures, with the addition of cyanuric acid leading to changes in morphology and increased surface functional groups, ultimately enhancing photocatalytic activity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Milad Zehtab Salmasi, Mohammad Kazemeini, Samahe Sadjadi, Reza Nematollahi
Summary: Spinel MgAl2O4 nanospheres prepared by the combustion method were coupled with thermally-exfoliated g-C3N4 nanosheets (TE-GCN) through an efficient isoelectric point-assisted calcination technique. The synthesized nanocomposite exhibited improved electron-hole separation, leading to enhanced degradation of the RR195 dye contaminant. The optimal conditions for complete degradation were achieved at pH 3.0 with a photocatalyst dosage of 0.9 g/L and a duration of 70 minutes under simulated sunlight illumination. The TE-GCN@MgAl2O4 photocatalyst demonstrated high stability with only a negligible reduction in photodegradation efficiency after 5 consecutive catalytic reaction cycles.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
Priyanka Panchal, Devina Rattan Paul, Shubham Gautam, Poonam Meena, S. P. Nehra, Sanjeev Maken, Anshu Sharma
Summary: In this study, MgO nanoparticles and Ag/MgO nanocomposites were synthesized using aloe vera plant extract. The green-synthesized materials were characterized using various techniques and were found to exhibit enhanced photocatalytic and antimicrobial activities. The Ag/MgO nanocomposites showed high degradation efficiency of methylene blue and phenol, as well as effective killing of E. coli bacteria. The findings suggest the potential of these green-synthesized materials for environmental and medical applications.
Article
Environmental Sciences
Devina Rattan Paul, Rishabh Sharma, Vikrant Singh Rao, Priyanka Panchal, Shubham Gautam, Anshu Sharma, Satya Pal Nehra
Summary: In this study, a highly visible light responding 2D photocatalytic material was prepared and analysed. The results showed that the GCNML (0.5,2) sample had potential application for photodegradation of organic pollutants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Akash Garg, Miroslav Almasi, Robin Saini, Devina Rattan Paul, Anshu Sharma, Ankur Jain, Indra Prabh Jain
Summary: This study synthesized and characterized MOF-76(Tb) for hydrogen storage and humidity sensing applications. The material exhibited a stable structure, good thermal stability, and moderate hydrogen storage capacity. However, it was not suitable for humidity sensing applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Akash Garg, Miroslav Almasi, Jozef Bednarcik, Rishabh Sharma, Vikrant Singh Rao, Priyanka Panchal, Ankur Jain, Anshu Sharma
Summary: The present study synthesized and characterized a Gd(III)-based MOF (MOF-76(Gd)) with excellent hydrogen adsorption/desorption capacity and humidity sensing properties. The results showed that MOF-76(Gd) exhibited high thermal stability and good surface area and pore volume. Additionally, MOF-76(Gd) demonstrated fast response and recovery time in humidity sensing.
Review
Green & Sustainable Science & Technology
Rishabh Sharma, Miroslav Almasi, Satya Pal Nehra, Vikrant Singh Rao, Priyanka Panchal, Devina Rattan Paul, Indra Prabh Jain, Anshu Sharma
Summary: The exponentially increasing population leads to high energy demands and resource utilization, making the earth an unsustainable habitat. Utilizing renewable energy for water splitting and hydrogen generation can reduce carbon footprint and satisfy energy demands. However, existing photocatalysts still face challenges in terms of activity and stability.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Multidisciplinary Sciences
Devina Rattan Paul, Rishabh Sharma, Anshu Sharma, Satya Pal Nehra
Summary: In this study, alkali metal modified g-C3N4 was synthesized using a simple method of thermal polymerization. The synthesized lithium doped g-C3N4 was characterized to understand its structural, morphological, and optical properties. The photocatalytic potential of lithium doped g-C3N4 was analyzed for degradation of various organic dyes under natural solar irradiation. The study showed that li doped g-C3N4 could serve as a potential photocatalytic material for the degradation of organic dyes and could be further explored for other environmental applications.
PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY
(2022)
Article
Chemistry, Physical
Rishabh Sharma, Miroslav Almasi, R. C. Punia, Rahul Chaudhary, Satya Pal Nehra, Mahendra Singh Dhaka, Anshu Sharma
Summary: The globe needs to explore and study alternate energy sources due to the rapid use of fossil fuels, which will lead to an energy catastrophe in the future. Fuel cell technology, particularly Polymer Electrolyte Membrane Fuel Cell (PEMFC), is gaining wide acceptance as a renewable energy solution. This study focuses on the characteristics and importance of PEM fuel cells through experimental and theoretical observations, as well as analyzes the optimization of extracting energy from renewable sources.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Devina Rattan Paul, Rishabh Sharma, Saravjeet Singh, Pooja Singh, Priyanka Panchal, Anshu Sharma, Pooja Devi, S. P. Nehra
Summary: This study reports the one-step synthesis of novel Mg/Li co-doped g-C3N4 and evaluates its photocatalytic performance. The co-doped material shows enhanced photoactivity compared to mono-metallic and pristine g-C3N4, primarily attributed to improved absorption ability of visible light, reduced optical band gap, and retarded recombination rate of photo-induced electron-hole pairs. Additionally, the co-doped material exhibits good antibacterial activity. These findings suggest the potential applications of this material in the remediation of organic pollutants, water splitting, and bacterial disinfection.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Rishabh Sharma, Harsh Sharda, Arnab Dutta, Aarti Dahiya, Rahul Chaudhary, Anita Singh, Kavita Rathi, Suresh Kumar, Anshu Sharma, Sanjeev Maken, S. P. Nehra
Summary: As the world rapidly industrializes and the population grows, the demand for energy becomes a key driver for economic growth. However, traditional fossil fuels have limited availability and pose serious environmental problems. In recent decades, there have been developments in energy efficiency using non-conventional sources, making renewables like solar, wind, hydro, and hydrogen fuel cells promising alternatives. This research aims to extract information about the working principles and applications of these renewable energy technologies, as well as to gather knowledge for future research and improvements. The experiments conducted with a green energy trainer kit show varying energy efficiency levels and aim to contribute to the understanding and integration of renewable energy systems for sustainable and clean energy production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Inorganic & Nuclear
Priyanka Panchal, Rishabh Sharma, A. Sudharshan Reddy, Kiran Nehra, Anshu Sharma, S. P. Nehra
Summary: Researchers have been exploring the potential of nanomaterials-based solutions to combat environmental issues. Our team has synthesized photocatalytic nanomaterials and nanocomposites using plant extracts, which are cost-effective, non-toxic, and highly stable. This review examines the synthesis methods, applications, and green approaches for these materials, aiming to enhance understanding and future research.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Environmental Sciences
Vikrant Singh Rao, Rishabh Sharma, Devina Rattan Paul, Miroslav Almasi, Anshu Sharma, Suresh Kumar, Satya Pal Nehra
Summary: A one-step basic calcination process was used to create g-C3N4 photocatalytic composites modified by Gd2O3 nanoparticles. Various characterization techniques were employed to analyze the structural traits, optical properties, and morphological features of the material. The results showed that Gd2O3 increased the surface area of g-C3N4, redshifted the light absorption peak, and improved the efficiency of photogenerated charge carrier separation. The photocatalytic activity of the synthesized materials for methylene blue and methyl orange degradation was found to be excellent, with the 2:1 Gd2O3/g-C3N4 composition demonstrating high stability.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
