Article
Materials Science, Multidisciplinary
S. Sudhagar, S. Sathees Kumar, I. J. Isaac Premkumar, V. Vijayan, R. Venkatesh, S. Rajkumar, Mandeep Singh
Summary: The hydrothermal method was used to synthesize TiO2 nanoparticles and TiO2/La2O3, TiO2/Al2O3 composites. The crystal structure, shape, and optical characteristics were studied using FTIR spectroscopy, XRD, UV-Vis absorption spectroscopy, and SEM. Photocatalytic properties were evaluated by degrading methylene blue (MB) and crystal violet (CV) dyes under UV and visible light. TiO2/La2O3 exhibited the highest photocatalytic efficiency, while TiO2/Al2O3 showed the lowest efficiency.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Environmental Sciences
Nisha Rani, Brijnandan S. Dehiya
Summary: The study presents a smart magnetic nanocomposite doped with copper to reduce the energy bandgap of the photocatalyst, allowing for easy recovery after wastewater treatment and demonstrating high efficiency in degrading dyes.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Environmental Sciences
Karen Yuanting Tang, James Xiaoyuan Chen, Enrico Daniel R. Legaspi, Cally Owh, Ming Lin, Ice Si Yin Tee, Dan Kai, Xian Jun Loh, Zibiao Li, Michelle D. Regulacio, Enyi Ye
Summary: The Au-embedded TiO2 nanofibers showed superior photocatalytic degradation efficiency for organic dye pollutants, attributed to the plasmon resonance absorption of Au nanoparticles and effective charge separation at the Au-TiO2 hybrid heterojunction.
Article
Chemistry, Analytical
Abrar Ahmad, Fatih Tezcan, Gurbet Yerlikaya, Zia-ur-Rehman, Halime Paksoy, Gulfeza Kardas
Summary: In this study, we investigated the photoelectrochemical performance of manganese-doped cadmium sulfide quantum dots decorated on the surface of hierarchical double-layered rosette-rod titanium dioxide photoanode. By varying the dopant concentration and the number of deposition cycles, we found the best-performing photoanodes in terms of photocurrent density and photon conversion efficiency.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Hyeran Lee, Jun-Hyeok Lee, Yeji Lee, Eun-Bum Cho, Youn Jeong Jang
Summary: This study presents the preparation of defect-engineered TiO2/CuO hetero-junction photocatalysts for visible light-driven NH3 production through N-2 photofixation. The introduction of a type-II hetero-junction between TiO2 and CuO enhances light absorption and electron-hole separation. Moreover, the post-thermal annealing under N-2 gas flow increases the crystallinity and induces the formation of Ti3+ defect sites on the TiO2 surface. The defect-engineered TiO2/CuO photocatalysts show significantly improved NH3 production rate compared to pristine TiO2 and TiO2/CuO photocatalysts.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Applied
M. Manasa, Pranay R. Chandewar, Hari Mahalingam
Summary: Four different boron and cerium doped TiO2 photocatalysts were synthesized by the EDTA-citrate method and studied for degradation of two common fluoroquinolone-based antibiotics under sunlight. The synthesized catalysts showed 90-93% degradation for both antibiotics and demonstrated stability up to three consecutive runs, with e- and OH identified as the dominant species responsible for the photocatalytic activity. These catalysts also showed efficient disinfection capabilities against E.coli under solar light.
Article
Chemistry, Physical
Induja M. Sundaram, Sivaprakash Kalimuthu, Gomathi P. Priya, Karthikeyan Sekar, Saravanan Rajendran
Summary: A novel hierarchical TiO2 spheroids decorated with g-C3N4 nanosheets has been synthesized for efficient solar-driven hydrogen evolution and water depollution photocatalyst. The as-prepared nanocomposite exhibits superior photocatalytic performance compared to pure TiO2 and g-C3N4, and provides new insights for constructing efficient catalysts for solar energy conversion, solar fuels, and other environmental applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Sivagowri Shanmugaratnam, Balaranjan Selvaratnam, Aravind Baride, Ranjit Koodali, Punniamoorthy Ravirajan, Dhayalan Velauthapillai, Yohi Shivatharsiny
Summary: Earth-abundant transition metal chalcogenide materials, such as flower-like SnS2 nanoparticles embedded in TiO2, exhibit promising photocatalytic activity for hydrogen evolution and dye degradation. The enhanced performance is attributed to effective charge transfer, reduced recombination, and the involvement of reactive oxygen species in the photocatalytic degradation mechanism.
Article
Engineering, Environmental
Mayandi Jeyaraj, Raji Atchudan, Sakthivel Pitchaimuthu, Thomas Nesakumar Jebakumar Immanuel Edison, Palanichamy Sennu
Summary: In this study, CeO2/ZnO nanocomposite was successfully synthesized and characterized using various analytical methods. The material showed a small band gap energy and good photocatalytic performance, demonstrating high efficiency in degrading dyes.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Engineering, Environmental
Jorge Lopez, Ana Rey, Emilio Vinuelas-Zahinos, Pedro M. Alvarez
Summary: A novel green method was developed to synthesize Fe3O4 @TiO2-P25, a magnetic recoverable photocatalyst, by bonding Fe3O4 particles to TiO2-P25 nanoparticles. The method used aerial oxidative precipitation and achieved almost full recovery and recycling of terephthalate. The synthesized samples were comprehensively characterized and showed excellent photo-stability and photocatalytic performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Acoustics
Myeongjun Ji, Yong-Ho Choa, Young-In Lee
Summary: The study introduced a simple and cost-effective one-step method for synthesizing black TiO2-x microspheres based on ultrasonic spray pyrolysis. This approach directly introduces oxygen vacancies into the TiO2 products without the need for a reduction step, and the synthesized microspheres exhibit superior photocatalytic activity under visible light irradiation.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Physical
Chaorui Xue, Ruirui Huang, Ruizhi Xue, Qing Chang, Ning Li, Jinfang Zhang, Shengliang Hu, Jinlong Yang
Summary: A study developed ultrathin TiO2 nanosheets coated Ti plates with C, N co-doping, which exhibited enhanced water evaporation performance, photocatalytic activity, and purification ability for unevaporated water.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Rui Jiang, Wenhao Li, Kaili Zhu, Wei Ye, Genping Zhu, Gan Jia, Fuchun Xu, Jun Wang, Ting Tao, Yikang Wang, Xianglong Kong, Xiaohong Wu, Shiyu Du, Peng Gao, Joseph S. Francisco
Summary: In this paper, a uniform beta-C3N4 layer is successfully prepared and coated on a TiO2 nanotube substrate via calcination treatment using ethylenediamine as the carbon nitride precursor. The TiO2/C3N4 composite material exhibits promising sunlight-driven overall water splitting ability, with N vacancy defects in beta-C3N4 serving as the active site for oxygen generation from water.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Environmental Sciences
Sobia Maqbool, Adeel Ahmed, Arif Mukhtar, Muhammad Jamshaid, Aziz Ur Rehman, Saima Anjum
Summary: This work aims to develop a highly efficient solar light-induced photocatalyst based on La-Mn co-doped Fe2O3 nanoparticles. The synthesized nanoparticles were analyzed for their morphological, structural, and magnetic characteristics. The photocatalytic performance of the different catalysts was evaluated, and it was found that La0.2Mn0.2Fe1.6O3 catalyst showed exceptional degradation performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Yoki Yulizar, Iman Abdullah, Rizki Marcony Surya, Naya Luvy Alifa
Summary: Recently, there have been advancements in using chemistry materials, such as TiO2/YMnO3 photocatalyst, for water purification to achieve the sustainable development goal of clean water and sanitation. TiO2/YMnO3 showed a higher photocatalytic activity and stability in the visible light region compared to TiO2. The enhanced performance is attributed to the formation of a TiO2/YMnO3 heterojunction, a narrower bandgap, and excellent charge carrier separation. This study provides insights into the green synthesis of TiO2-based photocatalysts for efficient degradation of organic dyes in water purification.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Biochemical Research Methods
Shafali Singh, Sushil Kumar Kansal
Summary: The study developed a carbon dots-based fluorescence sensor that can detect Fe3+ and Hg2+ ions simultaneously in the same aqueous solution, with high sensitivity and selectivity.
JOURNAL OF FLUORESCENCE
(2022)
Article
Materials Science, Multidisciplinary
Sakshi Walia, Manpreet Kaur, Sushil Kumar Kansal
Summary: This study successfully synthesized an amine functionalized chromium based metal organic framework (NH2-MIL-101(Cr)) using the hydrothermal method. The prepared MOF was characterized for its structural, textural, morphological, and thermal properties. The NH2-MIL-101(Cr) showed a high surface area of 1321 m2/g and exhibited remarkable adsorption capacity for 2,4-dinitrophenol removal. Optimization studies were conducted for various process conditions, and the adsorption mechanism and data were analyzed. The results suggest that the hydrogen bonding interactions between the nitro group of 2,4-dinitrophenol and the amino group of NH2-MIL-101(Cr) contribute to its high adsorption tendency.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Hardeep Kaur, Vivek Anand, Ajay Sharma, Meenakshi Verma, Shweta Sareen, Surinder Kumar Mehta, Vishal Mutreja
Summary: Nowadays, greener pathways for the synthesis of nanostructures are being explored, including using plant extracts. In this study, sea buckthorn leaves were serially extracted using the soxhlet apparatus, and highly disperse silver nanoparticles were successfully prepared. The major components of the extract were identified, and their mechanisms in the formation of silver nanoparticles were investigated.
Article
Chemistry, Applied
Sahil Kumar, Kanika Saini, Shunmugavel Saravanamurugan, Xiaolei Zhang, Sushil Kumar Kansal
Summary: This study focuses on synthesizing sulfate functionalized niobium oxide-based catalyst for the acetalation of biomass-derived glucose. The results show that the sulfate groups incorporated NbOx-DS catalyst exhibits superior catalytic activity and selectivity compared to commercial niobium oxide catalyst (NbOx-CS). The study highlights the importance of the synthesis procedure for efficient incorporation of sulfate groups.
TOPICS IN CATALYSIS
(2022)
Article
Chemistry, Physical
Hadi Ali, Tom Vandevyvere, Jeroen Lauwaert, Sushil Kumar Kansal, Maarten K. K. Sabbe, Shunmugavel Saravanamurugan, Joris W. W. Thybaut
Summary: The present study focuses on designing a robust non-noble metal-based niobia-supported catalyst with a high number of oxygen vacancies for efficient HDO activity of anisole. Different synthesis procedures were adopted for the preparation of the Nb2O5 support, followed by Ni impregnation. The catalysts exhibited differences in surface areas, crystallite size, metal-support interaction, active interfacial species, and oxygen vacancies. Ni impregnated on Nb2O5-H had the highest amount of oxygen vacancies and showed the highest HDO activity of anisole.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Applied
Namrata Richa, Eshika Kiran, Namrata Kushwaha, Eshika Jaiswal, Ajay Kumar, Jaspreet Kaur, Shalini Sharma, Alok K. Jain, Jayant Sindhu, Surinder Mehta, Vikram Saini, Ramesh Kataria
Summary: Two novel Cu(II) complexes, [CuL(S-1-amino-2-propanol)] (R1) and [CuL(S-2-amino-1-propanol)] (R2), were synthesized and characterized. The crystal structures of R1 and R2 were analyzed and found to have distorted square pyramidal geometry. R1 exhibited higher stability and stronger antimicrobial activity against Pseudomonas aeruginosa compared to R2.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Review
Chemistry, Analytical
Anjali Tomar, Reeta R. R. Gupta, S. K. Mehta, Shweta Sharma
Summary: This article summarizes a study that focuses on the optical and analytical examinations used for the characterization and detection of chemical profiles of authentic and counterfeited banknotes. It reports the introduction of new anti-counterfeiting materials such as magnetically-responsive photonic anti-counterfeiting watermarks and fluorescent nanoparticles. Furthermore, various analytical techniques including IR spectroscopy, Raman spectroscopy, X-ray diffraction, etc., along with chemometrics approaches, are critically discussed for banknote examination.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
Article
Pharmacology & Pharmacy
Meenakshi Dudi, Raj Kumar, Priyanshi Saini, Aashima Sharma, Satish Kumar Pandey, Harjot Kaur, Ravinder Kumar, S. K. Mehta
Summary: In this study, OST-loaded oil in water nano-emulsion (OST-NEm) was prepared using a low-cost and highly effective ultrasonication emulsification method. The NEm showed good storage stability and stability under different salt concentrations and pH conditions. The cell viability studies confirmed the lack of toxicity of OST-NEm up to a concentration of 160 muM. OST and OST-NEm exhibited higher antioxidant potential compared to the control substance BHT.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Sangeeta Sharma, Arshpreet Kaur, Sunil Kumar, Khushboo Pathania, Kushvinder Kumar, Abhishek Arora, Surinder K. Mehta, Nikolai Petrovsky, Sangeeta P. Sah, Deepak B. Salunke, Sandip V. Pawar
Summary: In this study, an IMDQ derivative, meta-aminomethyl BBIQ, was encapsulated in biopolymer lignin nanoparticles (LNPs) to develop a slow-release delivery system and enhance its immune activating properties. The formation of spherical shaped LNPs of approximately 150 nm size was confirmed, and the release of meta-aminomethyl BBIQ from LNPs followed sustained release kinetics. The study suggests the potential use of LNPs as a drug delivery system for immune modulators or vaccine adjuvants.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2023)
Article
Environmental Sciences
R. Chandrasekhar, Y. Satyanarayana, Ch Ramakrishna, L. Vaikunta Rao, Jaspreet Kaur, Surinder K. Mehta
Summary: This study aims to assess the groundwater quality in the coastal area of Srikakulam district, India. Groundwater is the major source for drinking and irrigation purposes in this area. The study collected groundwater samples from 20 bore wells and analyzed various physicochemical parameters. The findings showed that around 90% of the samples had extremely hard water nature and higher concentrations of sodium and chloride, indicating seawater intrusion in the coastal region.
Review
Chemistry, Multidisciplinary
Indu Sharma, Jaspreet Kaur, Gargi Poonia, Surinder Kumar Mehta, Ramesh Kataria
Summary: Environmental pollutants pose a significant threat to ecological balance and human health, necessitating their control. Metal-organic frameworks (MOFs) are porous and highly diverse materials that can be used to adsorb pollutants and detoxify the environment. Nanoscale MOFs (NMOFs) have even greater capabilities in terms of selectivity, sensitivity, detection ability, and portability. This review focuses on the synthesis of MOF nanocomposites and NMOFs, as well as their applications as nanoabsorbents, nanocatalysts, and nanosensors for various pollutants.
NANOSCALE ADVANCES
(2023)
Review
Chemistry, Analytical
Hardeep Kaur, Shweta Sareen, Meenakshi Verma, Aseem Vashisht, Ajay Sharma, Ramesh Kataria, S. K. Mehta, Jeongwon Park, Vishal Mutreja
Summary: The worldwide pollution of water bodies by potential contaminants has drawn attention to the use of carbon dots as low-cost sensing materials for water pollution detection.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Nirbhai Singh, Shikha Aery, Smayira Juneja, Laxmi Kumari, Mohd Sajid Lone, Aijaz Ahmad Dar, Sandip Pawar, Surinder K. Mehta, Abhijit Dan
Summary: This study presents a promising strategy for drug delivery using chitosan hydrogels and dual-responsive microgels. The composite materials showed controllable release of the drug and excellent biocompatibility.
ACS APPLIED BIO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Nirbhai Singh, Shikha Aery, Smayira Juneja, Laxmi Kumari, Mohd Sajid Lone, Aijaz Ahmad Dar, Sandip V. Pawar, Surinder K. Mehta, Abhijit Dan
Summary: A promising strategy based on chitosan hydrogels and dual temperature- and pH-responsive microgels was reported for the release of a model drug, moxifloxacin. The microgels were incorporated inside the hydrogel matrix, resulting in a double barrier system that significantly reduced the drug release rate and prolonged the delivery time. The release of moxifloxacin could be controlled by regulating the temperature and pH of the delivery medium.
ACS APPLIED BIO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Rekha Yadav, Aditi Sugha, Manpreet S. Bhatti, Sushil K. Kansal, Sudhir K. Sharma, Tuhin K. Mandal
Summary: This study analyzed fog samples collected from the rooftop of Guru Nanak Dev University in Amritsar, India, and found that sulfate was the dominant pollutant in the fog, mainly originating from vehicular exhaust emissions from burning fossil fuels. Multiple regression analysis showed that the PM2.5/PM10 ratio and relative humidity have an exponential effect on visibility.
