Article
Chemistry, Physical
Munir Ahmad, Muhammad Tauseef Qureshi, Wajid Rehman, Nouf H. Alotaibi, Anadil Gul, Reda S. Abdel Hameed, Mahmoud Al Elaimi, M. F. H. Abd El-kader, Muhammad Nawaz, Rizwan Ullah
Summary: In this study, ZnO and Ag@ZnO nanoparticles based photocatalyst were synthesized using pecan nut leaf extract for the first time, with phytochemicals acting as capping and reducing agents. The catalyst showed enhanced catalytic properties after Ag doping, with optimal performance at pH 10 and following a pseudo first order kinetic model for RhB dye degradation. The reusability test demonstrated high stability of the catalyst even after 5 cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Crystallography
Maisari Utami, Shaobin Wang, Febi Indah Fajarwati, Siva Nur Salsabilla, Tania Amara Dewi, Melinda Fitri
Summary: In this study, the photodegradation of Rhodamine B (RhB) using nitrogen-doped titanium dioxide/reduced graphene oxide (N-TiO2/rGO) composite was reported for the first time. The incorporation of N-TiO2 and rGO showed a synergistic effect on the photodegradation of RhB. Under the optimum conditions of pH 2, a photocatalyst mass of 20 mg, and an irradiation time of 90 min, N-TiO2/rGO exhibited the highest photodegradation efficiency of RhB at 78.29%.
Article
Engineering, Chemical
Seyyedeh Samira Madani, Aziz Habibi-Yangjeh, Soheila Asadzadeh-Khaneghah, Hushan Chand, Venkata Krishnan, Amir Zada
Summary: The synthesized ZnO/Bi4O5I2 nanocomposites exhibit enhanced efficiency in degrading various pollutants under visible light, with the 20% ZnO/Bi4O5I2 nanocomposite showing superior photocatalytic performance compared to single samples and other composite materials. The improved efficiency is attributed to enhanced absorption towards visible light, increased surface area, and enhanced charge segregation in the binary system.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Materials Science, Multidisciplinary
Shruti Jain, Anuj Mittal, Vijaya Kumari, Anuradha Sharma, Jitender Jindal, Peter R. Makgwane, Vinod Kumar, Naveen Kumar, Kavitha Kumari
Summary: A precipitation and deposition method was used to synthesize binary and ternary nanocomposites. The nanomaterials were characterized and their properties were identified. The ternary nanocomposite showed the highest catalytic activity in an acidic medium and exhibited efficient degradation of organic pollutants in a short period of time.
Article
Chemistry, Inorganic & Nuclear
Said Al Mamari, Emad Khudaish, Younghun Kim, Majeda Khraisheh, Rengaraj Selvaraj
Summary: This study synthesized ZnO/g-C3N4 composites by combining hexagonal ZnO lotus buds with graphitic carbon nitride (g-C3N4) nanosheets using a one-pot paralysis approach. The photocatalytic performance of the composites was investigated by producing samples with various molar ratios of ZnO and g-C3N4. The 40% ZnO/g-C3N4 composite showed the highest photocatalytic activity for the degradation of benzene under visible light, with good stability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Harikrishnan Venkatesvaran, Sridharan Balu, Bing-Shiun Tsai, Thomas C. -K. Yang
Summary: In this study, nano-flake-like bismuth oxybromide embedded sulfonic acid-functionalized graphitic carbon nitride (BiOBr-NFs/g-C3N4-SAF) was successfully prepared through surface modification and heterojunction formation. The photocatalyst exhibited excellent catalytic activity for both photooxidation and photoreduction reactions, with remarkable performance in the degradation of Cr(VI) and RhB.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Biotechnology & Applied Microbiology
Prasenna John, Khairiraihanna Johari, Nirmala Gnanasundaram, Arunagiri Appusamy, Murugesan Thanabalan
Summary: A visible light-driven TiO2/gC(3)N(4) photocatalyst was synthesized for the photodegradation of diclofenac, resulting in significantly improved degradation efficiency. The maximum efficiency reached 93.49%, and the catalyst showed satisfactory recyclability. The reaction followed a pseudo-first-order kinetics and resulted in ten intermediates.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Physical
Anuradha Sharma, Monika Kumari, Muhammad Tahir, Shruti Jain, Shankar Sharma, Naveen Kumar
Summary: Metal oxide integrated metal organic framework (MOF) composites enhance the synergistic properties of organic framework materials. Bi2O3 modified iron succinic acid organic frameworks (Bi2O3@Fe-SA) with different Fe: Bi molar ratios were synthesized. The synthesized materials were characterized for crystal structures, morphology, chemical constitution, functional groups, band energies, surface charge, surface area, and charge carriers' recombination. The materials exhibited high photocatalytic degradation efficiency for Rhodamine B (RhB) dye under visible irradiation.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Carolina Sayury Miyashiro, Safia Hamoudi
Summary: The study investigated the photocatalytic degradation of acetamiprid in aqueous solutions under visible light by using bare ZnO as well as N- and N-GO-doped photocatalysts. Results showed that N-GO-ZnO exhibited the highest photocatalytic performance, achieving complete degradation of acetamiprid after 5 hours of reaction at ambient temperature. In comparison, no photocatalyst, bare ZnO, and N-doped ZnO materials reached conversion rates of 12%, 38%, and 68%, respectively, under the same conditions.
Article
Chemistry, Inorganic & Nuclear
Lopamudra Mohanty, Rahul Singhal, Debapriya Pradhan, Dhruti Sundar Pattanayak, Suresh Kumar Dash
Summary: A simple sonication technique was used to synthesize g-C3N4 nanoparticle decorated with BiFeO3. Various techniques were used to analyze the structural and optical characteristics of BiFeO3/g-C3N4 composites. The synthesized composite exhibited exceptional photocatalytic activity, attributed to the separation of photogenerated electron-hole pairs caused by charge migration. A possible photocatalytic process for dye degradation was proposed.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Mengtian Duan, Daoxin Wu, Jialun Wu, Haixia Tong
Summary: ZnWO4/Ag3PO4 photocatalytic composites were successfully synthesized and characterized in this study. The results showed that the 7% ZnWO4/Ag3PO4 composite exhibited the highest photocatalytic activity and good stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Yaying Li, Fen Xu, Lixian Sun, Xiaogang Xue, Yingjing Wang, Lumin Liao, Yanxun Guan, Bin Li, Kexiang Zhang, Yongjin Zou, Huanzhi Zhang
Summary: In this study, a Schottky junction was constructed by combining Mo-Ni bimetallic sulfide with g-C3N4 nanosheets, which effectively separated and accumulated carriers to enhance the conversion of O-2 to superoxide radicals, resulting in rapid degradation of the pollutant Rhodamine B.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Yue Zhang, Shu-Man Zhao, Qi-Wen Su, Jun-Li Xu
Summary: Nanoflower-like ZnO-C3N4 thin film with a porous net structure was successfully synthesized by a simple chemical corrosion method, exhibiting excellent photocatalytic degradation of methyl orange, especially in acidic media.
Article
Chemistry, Physical
W. S. Abo El-Yazeed, S. A. El-Hakam, A. A. Salah, Amr A. Ibrahim
Summary: Different BiVO4 and reduced graphene/BiVO4 nanocomposites photocatalysts were successfully prepared and characterized. The study found that higher temperatures promoted particle growth and affected the morphology and structure of the BiVO4 powders attached to graphene. The nanocomposites showed good photocatalytic performance and antibacterial activity under indirect Sun light irradiation.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
Olga Lugosz, Krzysztof Szostak, Julia Matysik, Wiktoria Matyjasik, Marcin Banach
Summary: This paper presents the preparation and characteristics analysis of a photocatalyst based on ZnO nanoparticles modified with silver and iron ions and peroxidase. The results show that the prepared catalyst has good peroxidase activity and efficient photocatalytic degradation of ibuprofen. The study provides a new method for the development of efficient photocatalysts.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Qiong Wu, Dingze Lu, Boyu Zhang, Kiran Kumar Kondamareddy, Yimei Zeng, Yuhao Zhang, Jiuxin Wang, Min Zhou, D. Neena, Hongjuan Hao, Huiqing Fan
Summary: CeNP/g-C3N4 composites exhibit enhanced photocatalytic activity for hydrogen evolution through optimized interfacial design, which leads to superior separation efficiency of photo-generated carriers. The optimum proportion of CeNP (20 mg) in CeNP/g-C3N4-C demonstrates outstanding performance in terms of photo-generated carrier separation efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Ceramics
Ankit Kumar, Pravin Kumar, A. S. Dhaliwal
Summary: The phase evolution of calcium-doped zirconia has been studied at various sintering temperatures, revealing the stabilization of the monoclinic and cubic phases. With increasing sintering temperature, the development of the cubic phase is observed, ultimately achieving a fully stabilized cubic phase at 1400 degrees C. The presence of calcium is uniformly distributed in the samples, and the calcium-stabilized zirconia shows good thermal stability and higher hardness compared to pure zirconia.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Yuhao Zhang, Dingze Lu, Hang Li, Hongmei Wang, Boyu Zhang, Jiuxin Wang, Qiong Wu, Yimei Zeng, Xinyu Zhang, Min Zhou, Hongjuan Hao, Huanyu Pei, Huiqing Fan, D. Neena, Kiran Kumar Kondamareddy
Summary: A series of composite heterojunction-MoS2/Zn0.5Cd0.5S photocatalysts, free of noble metal ions, were prepared using a simple hydrothermal method. The photocatalysts exhibited excellent photoresponse ability and hydrogen production performance, which can be attributed to the effective separation of charge carriers generated by irradiation.
APPLIED SURFACE SCIENCE
(2022)
Article
Electrochemistry
Boyu Zhang, Dingze Lu, Zhennan Wang, Kiran Kumar Kondamareddy, Min Zhou, Ajit Khosla, Xinyu Zhang, Yuhao Zhang, Qiong Wu, Yimei Zeng, Lihao Xie, Bang Zhao, Jing Li, Tongtong Yang, Huiqing Fan, Wingkei Ho
Summary: Two-dimensional g-C3N4 nanosheets were synthesized through high-temperature calcination. The prepared g-C3N4 was further used to synthesize a series of 2D/0D composites based on g-C3N4/Zn0.5Cd0.5S heterojunction composites with varying amounts of g-C3N4. The study found that appropriate g-C3N4 modification can improve the separation and transfer efficiency of photogenerated carriers and enhance the photocatalytic activity. The introduction of g-C3N4 to form a heterojunction effectively improves the separation and migration of photogenerated charges.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Qiong Wu, Dingze Lu, Kiran Kumar Kondamareddy, Wingkei Ho, Dezhong Cao, Yimei Zeng, Boyu Zhang, Yuhao Zhang, Lihao Xie, Bang Zhao, Zhennan Wang, Hongjuan Hao, Huiqing Fan, Hongmei Wang
Summary: BSCN samples with different mass ratios of CN to BS were successfully prepared using a hydrothermal method, allowing Bi2S3 nanoparticles to adhere closely to the surface of CN nanosheets while maintaining the structure of CN. BSCN demonstrated enhanced visible-light response and improved separation and transfer efficiency of photogenerated carriers, resulting in superior photocatalytic activity and degradation effects on dyes and antibiotics.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Review
Chemistry, Applied
Kannan Mohan, Abirami Ramu Ganesan, P. N. Ezhilarasi, Kiran Kumar Kondamareddy, Durairaj Karthick Rajan, Palanivel Sathishkumar, Jayakumar Rajarajeswaran, Lorenza Conterno
Summary: Chitin is a diverse and naturally occurring biopolymer found in crustaceans, insects, and fungi. Green extraction techniques have been successfully developed for extracting chitin and chitosan from various sources, leading to significant advancements in the field of polymer chemistry.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Physical
Yimei Zeng, Dingze Lu, Kiran Kumar Kondamareddy, Hongmei Wang, Qiong Wu, Huiqing Fan, Qiuping Wang, Boyu Zhang, Lihao Xie, Yuhao Zhang, Zhennan Wang, Bang Zhao, Wingkei Ho
Summary: A Z-scheme MoS2/Ag2S/AgVOx ternary heterostructure was synthesized and showed enhanced photocatalytic performance. Characterization techniques such as electron microscopy, XRD, XPS were employed to analyze the prepared composite. The study proposed a possible degradation mechanism and demonstrated the potential applications of the Z-scheme photocatalytic system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Crystallography
Ankit Kumar, Pravin Kumar, A. S. Dhaliwal
Summary: This study investigated the phase transformations and morphological properties of homogeneous zirconia thin films, with a thickness of 250 nm, synthesized on silicon substrate. Despite the amorphous nature of the deposited films, it was observed that a phase transformation from cubic phase to monoclinic phase occurred in the temperature range of 600-800 degrees C. The results also showed that the grain size of zirconia increased with the increase in annealing temperature.
Article
Chemistry, Physical
Lihao Xie, Dingze Lu, Kiran Kumar Kondamareddy, Wingkei Ho, Qiong Wu, Yimei Zeng, Yuhao Zhang, Zhennan Wang, Bang Zhao, Jing Li, Tongtong Yang, Ning Yang, Huiqing Fan, Lianbi Li
Summary: One-dimensional CeO2 nanotubes loaded on two-dimensional graphitic carbon nitride were successfully prepared for photocatalytic degradation of sewage. The results showed that the nanotubes were uniformly dispersed on the nanosheets, and an appropriate amount of nanotubes improved the photoresponse property and charge carrier separation efficiency of the samples.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Biochemical Research Methods
Puneeta Tripathi, Shushant Kumar Singh, Pravin Kumar
Summary: In this study, we investigated the effect of N-2 gas-mixing on xenon electron cyclotron resonance (ECR) plasma and discovered novel and unusual trends in the isotope anomaly. By recording the charge state distributions of six stable xenon isotopes with and without N-2 gas-mixing, we found clear signatures of the isotope anomaly. Contrary to theoretical predictions, the unusual trends in intensity ratios observed in mixed plasmas with a large fraction of the heavier isotope support the presence of the isotope anomaly.
JOURNAL OF MASS SPECTROMETRY
(2022)
Article
Materials Science, Multidisciplinary
Ankit Kumar, S. K. Singh, Pravin Kumar, A. S. Dhaliwal
Summary: Phase transformations in zirconia thin films induced by ion-beam irradiation have been studied. The structural and morphological properties of the films were modified after irradiation with different fluences. For the as-deposited film, an amorphous phase transformed into a cubic phase with increasing fluence, while for the annealed film, a fraction of cubic phase transformed into a monoclinic phase with increasing fluence. Surface features, such as grain agglomeration and grain boundary diffusion, were observed with increasing fluence.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Physical
Indra Sulania, Pravin Kumar, P. K. Priya, H. P. Bhasker, U. B. Singh, Ranjeet K. Karn, Chetna Tyagi, R. P. Yadav
Summary: InP surfaces were irradiated with 50 keV Ar+ ions, resulting in the formation of self-organized nanodots. The size uniformity of the nanodots improved with higher ion fluences, and the surface became enriched in Indium. Wettability studies showed that the contact angle of the surface increased with ion irradiation and stabilized at later fluences. Surface correlation analysis using autocorrelation and height-height correlation functions revealed that the interface width increased with ion fluences, indicating the presence of larger self-organized nanodots on the surface.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Engineering, Chemical
Lihao Xie, Dingze Lu, Yimei Zeng, Kiran Kumar Kondamareddy, Qiong Wu, Lianbi Li, Huiqing Fan, Wingkei Ho
Summary: A series of Ag-0 modified lamellar-graphite-phase carbon nitride nanosheets (Ag/LGCNs) were synthesized to construct noble metal/semiconductor heterojunction. The localized surface plasmon resonance (LSPR) effect of Ag-0 nanoparticles resulted in enhanced degradation rate and stability in the presence of rhodamine B. Photocurrent analysis, impedance analysis, FDTD simulation, and DFT were used to formulate the corresponding mechanism, which explained the enhanced photo-responsiveness and photocatalytic performance of Ag/LGCNs.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Chemistry, Physical
Qiong Wu, Dingze Lu, Kiran Kumar Kondamareddy, Wingkei Ho, Qiuping Wang, Yuhao Zhang, Yimei Zeng, Boyu Zhang, Lihao Xie, Bang Zhao, Zhennan Wang, Hongjuan Hao, Huiqing Fan, Hongmei Wang
Summary: In this study, composites based on two-dimensional graphitic carbon nitride nanosheets were prepared using a facile chemical deposition method, with CdS/NiS/g-C3N4 showing superior photocatalytic performance and significantly enhanced hydrogen production efficiency. The stability of the composite was also demonstrated to be high over multiple cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
