Article
Biochemistry & Molecular Biology
Sung-Hyun Kim, Hee-Joon Kim
Summary: This report describes a facile approach to immobilize visible-light sensitizers on TiO2 surfaces for efficient photocatalytic hydrogen production. By coating TiO2 with perfluorosulfonate polymer (Nafion), the sensitization of Sn(IV) porphyrin species was effectively utilized to enhance the hydrogen generation. The Nafion coated-TiO2 readily adsorbed the porphyrin cation Sn(IV) species via an ion-exchange process, resulting in a significant improvement in photocatalytic performance.
Article
Chemistry, Physical
Shota Imai, Yasumi Kojima, Eri Fudo, Atsuhiro Tanaka, Hiroshi Kominami
Summary: Pd@Ag/TiO2 nanoparticles were prepared using a two-step photodeposition method, achieving selective hydrogenation of 4-octyne with core-shell structure. An increase in Ag content resulted in a decrease in conversion rate.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Physical
Alejandro Suarez-Mendez, Myrna H. Matus, Victor M. Rivera
Summary: The photocatalytic evaluation of a novel material based on protonated thiophene-based oligomers as sensitizers of TiO2 nanoparticles supported on protonic zeolite-Y was investigated. Experimental results showed that the degradation rate depended on the amount of TiO2 supported on zeolite and the TiO2-OTn+/HY material was photochemically stable. Theoretical calculations indicated that oligothiophenes with protonation in the Ca atom exhibited the best performance as sensitizers in the TiO2OTn+/HY material.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Chemistry, Physical
Neda Mohaghegh, Maya Endo-Kimura, Kunlei Wang, Zhishun Wei, Alireza Hassani Najafabadi, Fatemeh Zehtabi, Negar Hosseinzadeh Kouchehbaghi, Saurabh Sharma, Agata Markowska-Szczupak, Ewa Kowalska
Summary: For the first time, titania-based photocatalysts with different crystalline compositions and morphology were modified and tested for antimicrobial activity. The antimicrobial inactivation mechanism was found to follow two different pathways, depending on the conditions. The improved photocatalytic activity of the modified samples was attributed to the hindrance of charge carriers' recombination by phosphate anions in the modification.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Wenbo Li, Fang Wang, Zhengguo Zhang, Xiaohua Ma, Shixiong Min
Summary: The efficient photocatalytic H-2 evolution of MAPbI(3)-PANI NW composite is significantly enhanced by the improved charge separation through the coupled PANI NWs.
SUSTAINABLE ENERGY & FUELS
(2021)
Article
Chemistry, Inorganic & Nuclear
A. Jafarabadi, M. Sobhani, H. Koohestani
Summary: In this study, TiO2/Fe2TiO5 ceramic was synthesized by reacting iron (III) hydroxide with dispersed suspension of TiO2 particles. Suspensions at different pH values were prepared, and subsequent calcination resulted in the formation of Fe2TiO5 on the surface of TiO2 particles. XRD analysis confirmed the presence of pseudobrookite Fe2TiO5, while TEM images showed the coexistence of Fe2TiO5 and TiO2 with rutile structure. UV-Vis diffuse reflectance spectra revealed two direct band gap energies associated with the Fe2TiO5 coating and TiO2 support.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
S. Jagadees Babu, V. Navakoteswara Rao, Dharmapura H. K. Murthy, Mahesh Shastri, M. Murthy, Manjunath Shetty, K. S. Anantha Raju, Prasanna D. Shivaramu, C. S. Ananda Kumar, M. V. Shankar, Dinesh Rangappa
Summary: TiO2 is extensively studied for its photocatalytic properties, but its limitation in absorbing visible light is addressed in this study through the induction of defects to reduce bandgap. The brown TiO2 synthesized showed enhanced visible-light absorption and significantly improved H-2 evolution efficiency under natural sunlight, demonstrating its potential for cost-effective solar H-2 production.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Duoduo Gao, Jiachao Xu, Huogen Yu, Yongping Liu, Jiaguo Yu
Summary: A hydroxyl-enriched highly crystalline TiO2 suspensible photocatalyst was synthesized using a simple ethanol-controlled hydrolysis and in situ crystallization method, and exhibited a significantly higher H-2 evolution rate than the well-known commercial P25 TiO2 without any cocatalysts.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Maria-Isabel Mendoza-Diaz, Aurelie Lecestre, Ludovic Salvagnac, Botayna Bounor, David Pech, Mehdi Djafari-Rouhani, Alain Esteve, Carole Rossi
Summary: This article proposes a new concept of a three-dimensional microstructured photocatalyst, which can efficiently produce hydrogen under direct sunlight. The photocatalyst exhibits significantly increased hydrogen production compared to conventional planar TiO2 films, and the introduction of Au nanoparticles further enhances the performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yu Cao, Shi Nee Lou, Sicong Wang, Hui Yang, Qitao Zhang, Chengyin Wang, Naoya Murakami, Teruhisa Ohno
Summary: This study investigates the potential of Pt sensitizers as co-catalysts for visible light photocatalytic degradation of acetaldehyde. The Pt(II) oxide/TiO2 catalyst shows the best photocatalytic activity but suffers from stability issues. Surface modification with a Fe(III) oxide sensitizer layer enhances both the stability and activity of Pt(II) oxide/TiO2, leading to improved performance.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Physical
Miquel Torras, Pau Molet, Lluis Soler, Jordi Llorca, Anna Roig, Agustin Mihi
Summary: The study uses a light-trapping scheme to increase the light-harvesting efficiency of TiO2 semiconductors, improving photocatalytic performance for hydrogen production, and may open new avenues in solar harvesting.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yuqing Hu, Puhui Deng, Wenying Wang, Linping Zhang, Yu Hou
Summary: Element doping and collaboration with other cocatalysts are important strategies to improve CdS's photoelectrochemical properties. In this study, manganese cadmium sulfides (MnxCd1-xS) were synthesized by a solvothermal method. The Mn0.5Cd0.5S sample showed the best photocatalytic hydrogen production, and further enhancement was achieved by coupling Ni-POMs as cocatalysts. The highest efficiency was observed for 15-Ni-4-Mn0.5Cd0.5S, which formed a double type-II heterojunction.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Ju-Seong Choi, Sungjin Kim, Yongheum Choi, Kwang Bok Kim, Hyun-Jong Kim, Tae Joo Park, Young Min Park
Summary: Ag-decorated CuO@TiO2 semiconductor heterojunctions were successfully prepared and exhibited excellent performance in visible light photocatalysis applications. The high decomposition efficiency was achieved through the combined effects of the conformal core-shell heterojunction formed by atomic layer deposition and the well-distributed Ag nanoparticles.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Zhengdong Xu, Yanbai Chen, Junbo Zhong, Jiufu Chen, Minjiao Li, Qi Wang, Hao Yang
Summary: TiO2 precursors were treated by plasma technology in different atmospheres to achieve N-doping and enhance the separation of photogenerated charge carriers. The H2 production efficiency and apparent quantum efficiency of TiO2 were significantly improved after plasma treatment in N2 atmosphere. The introduction of N-doping and increased oxygen vacancies on the TiO2 surface played a crucial role in the enhanced photocatalytic H2 production.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Xin Liu, Ya Zhang, Shigenori Matsushima, Takeharu Sugiyama, Hajime Hojo, Hisahiro Einaga
Summary: Cu-doped ZnS catalysts show high activity in hydrogen production from water under visible-light irradiation, with the highest activity observed at 7% Cu doping.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Spandana Gonuguntla, Amritanjali Tiwari, Sruthi Madanaboina, Giribabu Lingamallu, Ujjwal Pal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Multidisciplinary
Indranil Mondal, Hyunhwa Lee, Heeyoung Kim, Jeong Young Park
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Tapashree Mondal, Indranil Mondal, Sourav Biswas, Manoj V. Mane, Sujit S. Panja
Article
Green & Sustainable Science & Technology
Spandana Gonuguntla, Amritanjali Tiwari, Jonnalagadda Gopinath, Soujanya Yarasi, Annadanam V. Sesha Sainath, Ujjwal Pal
Article
Chemistry, Physical
Kadavath Santhosh, S. K. Saddam, Sadhana Chouti, Spandana Gonuguntla, Sai Prasad Ega, Amritanjali Tiwari, Ujjwal Pal
Summary: This study presents a facile and cost-effective approach for synthesizing a ternary photocatalyst for efficient photocatalytic hydrogen generation. By tuning the morphology of the composite material, high hydrogen production efficiency was achieved, along with promising results for dye degradation. The electron transfer pathway involving hierarchical porous TiO2 and rGO graphene played a vital role in enhancing photocatalytic performance.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Tapashree Mondal, Swapnadip Roy, Indranil Mondal, Manoj Mane, Sujit S. Panja
Summary: The photodynamics of the organic molecule PHQ in aggregation state are primarily affected by factors such as photo-induced electron transfer rates and active intramolecular motions. The transition from weakly emissive to highly emissive states is substantiated through various techniques including time-resolved photoluminescence. Investigating the aggregated hydrosol using time-resolved anisotropy measurements reveals insights into the microenvironment viscosities of PHQ.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Spandana Gonuguntla, S. K. Saddam, Amritanjali Tiwari, Haraprasad Mandal, Prashanth Naik Lakavath, Vijayanand Perupoga, Ujjwal Pal
Summary: This study demonstrates a significant enhancement in hydrogen production by constructing a ternary composite of hierarchical porous TiO2 and g-C3N4 on hexagonal boron nitride (h-BN). The new material shows improved photocatalytic performance and charge separation efficiency.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Amritanjali Tiwari, Amit Gautam, Saddam Sk, Deepak S. Gavali, Ranjit Thapa, Ujjwal Pal
Summary: This study focuses on the synthesis of a photocatalyst with TiO2 mesoporosity, precise loading of MoS2, and increased surface area, which enhances hydrogen evolution reactions. The results show that MPT10 exhibits significantly higher hydrogen evolution rate and apparent quantum yield compared to other materials, indicating its superior performance in solar fuel productions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Indranil Mondal, J. Niklas Hausmann, Gonela Vijaykumar, Stefan Mebs, Holger Dau, Matthias Driess, Prashanth W. Menezes
Summary: The development of metal catalysts is crucial for accelerating the oxygen evolution reaction and producing green hydrogen on a large scale. This study presents a novel approach using intermetallic nickel silicide as a promising precatalyst for anodic oxygen evolution reaction. Additionally, an anodic-coupled electrosynthesis method is established to selectively oxidize organic amines to value-added organocyanides, boosting the cathodic reaction. The activated form of the catalyst exhibits high efficiency and long-term durability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Applied
Sagar Varangane, Chandra Shobha Vennapoosa, Amritanjali Tiwari, Sanna Kotrappanavar Nataraj, Taraka Prabhu Yendrapati, Ujjwal Pal
Summary: Metal-organic frameworks (MOFs) have advanced research in photocatalysis by altering their structure for visible light absorption. This study focuses on synthesizing Cu-doped ZIF-8 photocatalysts using a metal ion exchange method and characterizing them through spectroscopic and electrochemical studies. The Cu@ZIF-8 (CDZ-20) photocatalyst exhibited significantly enhanced light-harvesting ability and hydrogen generation rate.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Ratul Paul, Priyanka Kalita, Duy Quang Dao, Indranil Mondal, Bishal Boro, John Mondal
Summary: The study introduces a novel concept by selecting a specific ionic monomer and a donor tritopic aldehyde to trigger linker-independent regioselective protonation/deprotonation in the polymeric backbone. The protonation effect significantly enhances the lifetime of photoexcited electrons in the polymeric backbone. The TPA-Ionic outperforms TPD-Ionic in terms of catalytic performance due to its enhanced exciton formation and charge carrier abilities.
Article
Chemistry, Multidisciplinary
Indranil Mondal, Pramod V. Menezes, Konstantin Laun, Thomas Diemant, Mohammad Al-Shakran, Ingo Zebger, Timo Jacob, Matthias Driess, Prashanth W. Menezes
Summary: A hierarchical amorphous birnessite-type manganese oxide layer was synthesized on 3D nickel foam using a rapid in-liquid plasma approach. The resulting catalyst exhibited high activity in oxygen evolution reaction (OER) and chemoselective dehydrogenation of benzylamine.
Article
Chemistry, Multidisciplinary
Indranil Mondal, Arup Mahata, Heeyoung Kim, Ujjwal Pal, Filippo De Angelis, Jeong Y. Park
Article
Chemistry, Multidisciplinary
Sukanya Borthakur, Purashri Basyach, Lisamoni Kalita, Karanika Sonowal, Arnritanjali Tiwari, Pubali Chetia, Lakshi Saikia
NEW JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Physical
Indranil Mondal, Song Yi Moon, Hyunhwa Lee, Heeyoung Kim, Jeong Young Park
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Multidisciplinary
Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang
Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu
Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti
Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin
Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu
Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin
Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli
Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov
Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Showket Ahmad Bhat, Mohd Ikram
Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro
Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Zhihua Liu, Jinzhe Li, Jianguo Zhou
Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang
Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout
Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su
Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Saikat Khamarui, Sirshendu Ghosh
Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.
NEW JOURNAL OF CHEMISTRY
(2024)