Article
Chemistry, Analytical
Muhammad Bilal Tahir, Sohail Farman, Muhammad Rafique, Muhammad Shakil, Muhammad Isa Khan, Mohsin Ijaz, Iqra Mubeen, Maria Ashraf, Khalid Nadeem Riaz
Summary: In this study, hybrid WO3/TiO2 photocatalysts were prepared using hydrothermal method for the degradation of methylene blue dye under visible light irradiation. The composite sample showed seven times improved photocatalytic activity compared to pure samples, mainly attributed to the increase of the photo-absorption effect by TiO2, the cooperative effect of WO3, optimal band gap, and unique morphological structures. The cost-effective synthesized photocatalysts can have potential applications in energy and environmental fields.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Environmental
Periyakaruppan Karuppasamy, Nagoorkani Ramzan Nilofar Nisha, Arivalagan Pugazhendhi, Sabariswaran Kandasamy, Sakthivel Pitchaimuthu
Summary: The study focused on preparing semiconducting materials like TiO2 and transition metal-doped TiO2 using a sol-gel method and characterizing them through various analyses. Among them, Zn-doped TiO2 showed the best photocatalytic efficiency in decolouring Methylene blue dye under visible light irradiation. Results indicated that Zn-doped TiO2 had a lower band gap, leading to enhanced dye degradation compared to other catalysts. UV-vis spectra and the decolouration percentage of Methylene blue showed the superior photocatalytic activity of Zn-doped TiO2.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Pharmacology & Pharmacy
Sun-Hwa Seo, Ara Joe, Hyo-Won Han, Panchanathan Manivasagan, Eue-Soon Jang
Summary: Photo-nanotheranostics integrates near-infrared light-triggered diagnostics and therapeutics, promising early detection and precise treatment of cancer. In this study, mesoporous silica-coated gold nanorods on graphene oxide loaded with methylene blue were developed as an all-in-one photo-nanotheranostic agent for imaging-guided photothermal therapy and photodynamic therapy. The nanomaterial showed a high photothermal conversion efficiency and strong SERS effect, allowing accurate cancer cell detection and prolonged therapy.
Article
Materials Science, Ceramics
Maryam Sadat Sharifiyan, Arash Fattah-Alhosseini, Minoo Karbasi
Summary: WO3 nanoparticles were grown hydrothermally on porous titania (TiO2) PEO-coated on Ti in an alkaline electrolyte using pulsed direct current mode. The hydrothermal parameters including precursor concentration, temperature, and time were optimized to achieve the best photodegradation of methylene blue mediated by the PEO/HT hybrid coatings under visible illumination. The improvement in photocatalytic performance was attributed to the participation of more WO3 nanoparticles and the expansion of the light absorption range of TiO2 up to the visible light range.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
Bablu Basumatary, Rajmoni Basumatary, Anjalu Ramchiary, Dimpul Konwar
Summary: Methylene blue degradation in wastewater was achieved effectively through the photocatalytic activity of Ag@TiO2/WO3 nanocomposite, which was prepared by a modified sol-gel precipitation route. The enhanced photocatalytic performance was attributed to reduced bandgap, improved charge carrier transfer efficiency, and plasmonic sensitization of Ag, resulting in a 25 times higher degradation rate compared to commercial DP25 photocatalyst under visible light.
Article
Environmental Sciences
Wei Gao, Yufeng Li, Jitao Zhao, Zhe Zhang, Weiwei Tang, Jun Wang, Zhenyu Wu
Summary: Reduced graphene oxide (rGO)/TiO2 nanocomposites, synthesized through a hydrothermal technique, were used as photocatalysts to effectively degrade methylene blue (MB) in industrial dyestuff wastewater. The degradation efficiency of the nanocomposites for MB was as high as 98.18% at 5wt.% rGO content, 0.4 g L-1 rGO/TiO2 content, pH 6, and 60 mg L-1 MB concentration. The photocatalytic degradation mechanism involved immediate oxidative degradation and the combined action of O-2(center dot-), OH(center dot), and h(+) species. The degradation kinetic of the nanocomposites for MB followed a first-order model under UV irradiation.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Engineering, Environmental
Mahboubeh Rabbani, Javad Shokrayian, Rahmatollah Rahimi, Rezvaneh Amrollahi
Summary: Zinc oxide and doped zinc oxide nanorods were successfully synthesized using a simple template-free precipitation technique, with meso-tetrakis (4-sulfonatophenyl) porphyrin immobilized on the zinc oxide nanorods. The photocatalytic activity of TPPS/ZnO was found to be higher than that of pure zinc oxide and doped zinc oxide under visible light irradiation, as revealed by various characterization techniques and degradation studies of methylene blue.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Sile Liu, Yifu Bu, Song Cheng, Rongrong Tao
Summary: TiO2/g-C3N5 heterojunction is synthesized for the photocatalytic degradation of methylene blue under visible light irradiation. The characterization analysis shows that TiO2/g-C3N5 has good crystallinity and performs well in MB photocatalytic degradation. The MB removal rate of TiO2/g-C3N5 is 97.4% at a concentration of 20 mg/L, significantly higher than TiO2 and g-C3N5. The visible light adsorption ability and photogenerated carrier separation of TiO2/g-C3N5 are improved, leading to enhanced MB photocatalytic degradation. TiO2/g-C3N5 also exhibits good reusability with 95.8% initial removal after 5 cycles. The mechanism of MB photocatalytic degradation on TiO2/g-C3N5 is consistent with the direct Z scheme mechanism based on band gap structure calculations.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mahdieh VafaeiAsl, Iman Keshavarz, Farzaneh Shemirani, Parastoo Jamshidi
Summary: This article investigates the photocatalytic performance of a nanocomposite, consisting of two nanocore-shell-nanoparticles, Fe3O4@SiO2 and WO3@TiO2, for degrading methylene blue (MB). The materials were prepared using environmentally-friendly reagents and energy efficient methods. The characterization of the materials was conducted using various techniques. The optimal conditions for methylene blue degradation were determined, and the nanocomposite showed good reusability and durability.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Chemistry, Inorganic & Nuclear
Jingjing Li, Chenpeng Guo, Lihua Li, Yongjun Gu, Kim BoK-Hee, Jinliang Huang
Summary: In this study, a Z-scheme core-shell WO3-Cu2O nanorods array was synthesized via one-step hydrothermal and electrochemical deposition method. The effects of electrodeposition time on the performance of the products were investigated. The results showed that the optimum Cu2O deposition time was 120 s. The deposited Cu2O nanoparticles enhanced the visible light absorption and inhibited the recombination of photogenerated carriers. The photoelectrochemical measurement also demonstrated the improved separation of photogenerated carriers. Overall, the Z-scheme WO3-Cu2O core-shell heterojunction played a crucial role in enhancing the photocatalytic activity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Guanghui Li, Changye Mang, Lang Xing, Pengxu Cao, Yongfeng Cai, Jun Luo, Hao Jiang
Summary: In this study, a Mo-doped TiO2 photocatalyst CTAB-Mo-TiO2/FAC was prepared using a sol-gel method and modified with CTAB. The CTAB-Mo-TiO2/FAC showed low bandgap, strong light absorption ability, and wide absorption range. CTAB doping facilitated the incorporation of Mo6+ into the TiO2 lattice, causing crystal distortion and generating more oxygen vacancies, which enhanced the photocatalytic activity. The experimental results demonstrated that CTAB-Mo-TiO2/FAC exhibited the highest removal efficiency for MB under visible light irradiation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Ceramics
Deshan Cheng, Changwang Yan, Yuhang Liu, Yang Zhou, Dongdong Lu, Xiaoning Tang, Guangming Cai, Daiqi Li, Zhong Zhao, Xin Wang
Summary: The study explores the recycling of photocatalyst in wastewater treatment by loading copper ferrite particles onto polydopamine treated ceramic/polyester fabrics. The CPF/CuFe2O4 photocatalyst demonstrated excellent photocatalytic activity, photostability, and recoverability, showing great potential in wastewater treatment.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Jaspal Singh, Subhavna Juneja, R. K. Soni, Jaydeep Bhattacharya
Summary: Metal free heterojunctions, like the CuO-Cu2O nanorods/TiO2 nanoparticles heterostructures synthesized in this study, show promising potential as low-cost photocatalysts. These heterojunctions have superior sunlight-induced photodegradation activity and can effectively remediate toxic wastewater.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Peng Chen, Yumeng Liang, Yifeng Xu, Yunliang Zhao, Shaoxian Song
Summary: A novel method using methylene blue as a photosensitizer for the homogeneous degradation of methyl orange under visible-light irradiation was proposed. The degradation mechanism involves Type II pathway and Type I photosensitization, and synchronous removal of methyl orange and methylene blue can be achieved by controlling the initial methylene blue concentration. This cost-effective method shows great potential in eliminating methyl orange and methylene blue from wastewater and offers a new strategy for sustainable water treatment.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Marwa A. Moghazy
Summary: Environmental pollution has a significant impact on humans and other organisms. The demand for a green method to synthesize nanoparticles for pollutant removal is increasing. This study focuses on synthesizing MoO3 and WO3 nanorods using the green and self-assembled Leidenfrost method. Characterization analysis shows the formation of nanoscale WO3 and MoO3 with specific properties.
Article
Acoustics
Edwin Nimmy, P. Wilson
ULTRASONICS SONOCHEMISTRY
(2019)
Article
Materials Science, Ceramics
Nimmy Edwin, Sundarraj Saranya, P. Wilson
CERAMICS INTERNATIONAL
(2019)
Article
Materials Science, Multidisciplinary
T. Manovah David, P. Wilson, R. Mahesh, C. Ramesh, P. Sagayaraj
MATERIALS RESEARCH EXPRESS
(2019)
Article
Acoustics
S. Ida, P. Wilson, B. Neppolian, M. Sathish, P. Karthik, P. Ravi
ULTRASONICS SONOCHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Priya Ranjan Dev, T. Manovah David, S. J. Samuel Justin, P. Wilson, A. Palaniappan
JOURNAL OF NANOPARTICLE RESEARCH
(2020)
Article
Chemistry, Multidisciplinary
T. Manovah David, K. Gnanasekar, Paul Wilson, Pappu Sagayaraj, Tom Mathews
Article
Chemistry, Multidisciplinary
Smriti Mukherjee, E. Iyyappan, Keerthi Satheesh, Elsa Maria Jordi, S. Saranya, S. J. Samuel Justin, D. Reuben Jonathan, Rajadurai Vijay Solomon, P. Wilson
Summary: In this study, HA nanorods and nanoplates with high surface area were synthesized using the chemical precipitation method. The synthesized particles were characterized using various techniques. It was found that the HA nanorods exhibited excellent catalytic activity, while the nanoplates were catalytically inactive. The importance of surface Ca2+ ions in the catalysis was also discussed.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Priya Dharshini Augusthian, Raju Lipin, D. Reuben Jonathan, Rajadurai Vijay Solomon, Paul Wilson
Summary: This article explores the educational challenges faced by tribal communities in South India and proposes the use of science camps to engage and educate tribal students, bridging the gap between them and mainstream education. The program not only benefits tribal students but also provides an opportunity for student mentors to develop leadership skills.
JOURNAL OF CHEMICAL EDUCATION
(2022)
Article
Chemistry, Multidisciplinary
S. Saranya, S. J. Samuel Justin, Nimmy Edwin, P. Wilson
Summary: Hydroxyapatite nanoparticles functionalized with L-arginine have been synthesized using ultrasonically assisted chemical precipitation technique and exhibited excellent sensing ability towards dopamine on carbon paste electrodes. The morphology of hydroxyapatite and the nature of L-arginine functionalization play a crucial role in the electrochemical determination of dopamine.
Article
Chemistry, Physical
David Samuvel Michael, Nimmy Edwin, Rajadurai Vijay Solomon, Paul Wilson
Summary: This article addresses the limitation of the traditional particle on a ring model in predicting absorption maxima for molecules with delocalized π electrons by considering an elliptical path for the delocalization. By finding an approximate radius for the ellipse, the calculated absorption maxima values show good agreement with literature values and computed TD-DFT results. This establishes a new perspective of the particle on a ring model for use in undergraduate quantum mechanics and spectroscopy courses.
COMPUTATIONAL AND THEORETICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Reshma Rensil Francis, Cheriyan Ebenezer, Rajadurai Vijay Solomon, Paul Wilson
Summary: Developing suitable fluorescent probes for labeling peptides and proteins is still a major challenge. We computationally screened the luminescence properties of twelve recently reported amino acid-coupled benzanthrone 2-aminoacetamide molecules and found that they have stable hydrogen bond interactions, making them suitable for bio-visualization applications.
NEW JOURNAL OF CHEMISTRY
(2023)
Review
Materials Science, Multidisciplinary
Priya Ranjan Dev, Chekkottu Parambil Anand, David Samuvel Michael, P. Wilson
Summary: This article consolidates the influence of parametric determinants in the electrodeposition process on the microstructures of HAp coatings and their application as sensors. The synergistic effect of current density and pH values is also discussed.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Physical
S. Ida, S. J. Samuel Justin, P. Wilson, B. Neppolian
Summary: Efforts have been made to develop efficient photocatalysts for hydrogen generation using TiO2 and reduced graphene oxide (RGO). The synthesis of black - nitrogen doped TiO2/nitrogen doped reduced graphene oxide (BNTNG) has been optimized using a low temperature/pressure, vacuum annealing process with ethanol. The BNTNG-2 catalyst, stabilized with pyrrolic nitrogen, has shown enhanced hydrogen generation and electrochemical activity compared to its counterparts BNTNG-1 and BNTNG-3, due to the presence of C2H4 fragments from ethanol that restore sp(2) hybridization in nitrogen doped reduced graphene oxide (NRGO). The decreased hydrogen production and capacitance in BNTNGs compared to its white analogue can be attributed to electron/hole recombination centers caused by the presence of N-O species and oxygen vacancies/Ti3+ ions. The recyclability of the photocatalyst has been confirmed over five consecutive cycles. A plausible mechanism is proposed to explain the role of N-O moieties and the restoration of sp(2) graphitic structure in BNTNG-2.
APPLIED SURFACE SCIENCE ADVANCES
(2022)
Article
Nanoscience & Nanotechnology
E. Iyyappan, S. J. Samuel Justin, P. Wilson, Arumugam Palaniappan
ACS APPLIED NANO MATERIALS
(2020)
