Article
Materials Science, Multidisciplinary
Wei Jiao, Lili Zhang, Ruiquan Yang, Jing Ning, Lei Xiao, Yifan Liu, Jianyi Ma, Nasir Mahmood, Xian Jian
Summary: A novel ultrasmall visible-light-responsive TiO2 photocatalyst with a hybrid structure and a monolayer carbon shell has been developed through chemical vapor deposition. The resulting structure possesses a narrowed bandgap and exhibits outstanding photocatalytic activity under visible light. The design also stabilizes Ti3+, facilitates the separation of photo-induced carriers, and enriches absorbing sites for target pollutants.
APPLIED MATERIALS TODAY
(2022)
Article
Energy & Fuels
Nguyen Duc Manh, Shuoping Ding, Nghiem Thi Thuong, Nguyen Van Anh, Esteban Mejia
Summary: A facile route for synthesizing vanadium-doped TiO2 photocatalysts was developed, and the physicochemical properties of the prepared samples were characterized by different methods. The V-doped catalysts showed significantly enhanced photodegradation activity towards trichloroethylene compared to undoped TiO2 under aerobic conditions. Importantly, these V-doped catalysts exhibited high activity under both ultraviolet and visible light irradiation, and they were also recyclable for at least four consecutive runs without any activity loss.
Article
Chemistry, Physical
Chaehun Lim, Ha-Rim An, Seongmin Ha, Seongjae Myeong, Chung Gi Min, Hea-Jong Chung, Byoungchul Son, Chang-Yeon Kim, Ji-In Park, Hyeran Kim, Hyun Uk Lee, Young-Seak Lee
Summary: We propose an underwater plasma method to produce nanoporous N-doped TiO2 (N-TiO2) photocatalysts with high reactivity in the visible light range. The unique energy input of this technology enables the synthesis, crystallization, doping, and porosity of TiO2 within minutes. The resulting N-TiO2 demonstrates a nanoporous structure with doped N atoms, which leads to narrow bandgap, effective charge-carrier separation, and enhanced light absorbing ability. The N-TiO2 photocatalysts exhibit efficient photocatalytic activities and excellent antibacterial ability, making them suitable for environmental and biomedical applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Guoqiang Deng, Xiangdong Kang, Yongqiang Yang, Lianzhou Wang, Gang Liu
Summary: In this study, skin B/N-doped red anatase TiO2 {001} nanoflakes were synthesized to overcome the limited visible light response of photocatalysts. The introduction of boron dopants and nitrogen atoms on the surface of TiO2 nanoflakes effectively shortens the charge transport path, leading to efficient visible light responsive photocatalytic activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yan Chen, Ao Li, Xiuli Fu, Zhijian Peng
Summary: This study proposes a simple and feasible method for preparing titanium oxide photocatalysts with reduced band gap, high electrical conductivity, and good chemical and structural stability. By co-doping N and F and oxygen deficiency, the visible light absorption and photocatalytic activity can be significantly enhanced. This work provides an important method for designing and fabricating high-performance titanium oxide photocatalysts.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Nikita Kovalevskiy, Dmitry Svintsitskiy, Svetlana Cherepanova, Stanislav Yakushkin, Oleg Martyanov, Svetlana Selishcheva, Evgeny Gribov, Denis Kozlov, Dmitry Selishchev
Summary: This paper describes the chemical engineering aspects of the preparation of highly active and stable nanocomposite photocatalysts based on N-doped TiO2. The synthesis involves the use of titanium oxysulfate as a precursor and ammonia as a precipitant and nitrogen source. The as-prepared N-doped TiO2 exhibits significant oxidation activity for volatile organic compounds under both UV and visible light due to its absorption spectrum. Surface modification with copper species enhances the activity and stability of the photocatalyst. The effects of different preparation conditions on the photocatalytic activity under UV and visible light are discussed.
Article
Biochemistry & Molecular Biology
Mikhail Lyulyukin, Nikita Kovalevskiy, Andrey Bukhtiyarov, Denis Kozlov, Dmitry Selishchev
Summary: Composite materials based on nanocrystalline anatase TiO2 doped with nitrogen and bismuth tungstate were synthesized using a hydrothermal method. The samples showed different photocatalytic activity in the oxidation of volatile organic compounds under visible light due to the physicochemical characteristics. The Fe/Bi2WO6/TiO2-N composite improved the selectivity of oxidation compared to pristine TiO2-N in the degradation of ethanol vapor, but had an adverse effect in the degradation of benzene vapor.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Environmental Sciences
Selda Topcu Sendogdular, Levent Sendogdular
Summary: Ce-doped TiO2/zeolite fibers were synthesized for the removal of indigo dye, and the results showed that 3% Ce-doped fibers exhibited the highest photocatalytic activity, with a high degradation rate even after four cycles.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Kamol Dey, Sonalika Vaidya, Anna Gobetti, Giorgio Ramorino, Ashok K. Ganguli
Summary: Undoped and N-doped TiO2 anatase/brookite mixed-phase nanoparticles were synthesized via a sol-gel method using urea as a nitrogen source. Nitrogen played a dual role in doping and controlling the anatase and brookite phases in the nanoparticles. N-doped anatase/brookite mixed-phase nanoparticles exhibited superior photocatalytic activity in degrading rhodamine-B under simulated visible light irradiation.
MATERIALS TODAY COMMUNICATIONS
(2022)
Review
Chemistry, Physical
Aleksandra Piatkowska, Magdalena Janus, Kacper Szymanski, Sylwia Mozia
Summary: This article provides an overview of reports on doping TiO2 with carbon, nitrogen, and sulfur, discussing different doping modes and their properties. It also describes selected synthesis methods for non-metal doped TiO2 and their applications in various fields. Additionally, the influence of preparation conditions on doping mode and the mechanisms of photocatalysis for different modes of non-metal doping are discussed.
Article
Chemistry, Physical
Sara Shafafi, Aziz Habibi-Yangjeh, Solmaz Feizpoor, Hushan Chand, Venkata Krishnan, Chundong Wang
Summary: The study successfully developed TiO2/Bi2SiO5 photocatalysts with n-n heterojunction under visible light, showing outstanding potency in degrading various organic contaminants. The enhanced photocatalytic activity was attributed to the formation of n-n heterojunction, increased visible-light absorption, and expanded surface area of the TiO2/Bi2SiO5 nanocomposites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(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
Chemistry, Physical
Guopeng Zhu, Xiutao Yang, Yuxin Liu, Ying Zeng, Tianye Wang, Hongwen Yu
Summary: A brand-new catalyst of C-modified and N-doped TiO2 (T3FN1) was synthesized via the hydro-thermal method using Tetrabutyl titanate (TBOT) and feathers of chicken as the precursor. The catalyst exhibited a unique three-dimensional folded rod-shaped micron structure, thanks to the abundant distribution of TiO2 nanoparticles (anatase phase) around the outer surface of the feathers template. Under visible light illumination for 30 minutes, the degradation rate of TCH reached 89.8% with T3FN1, which was 1.52 times and 2.62 times higher than that of TiO2 without template (T-3) and P25, respectively. Mechanism studies revealed that the chicken feathers served as natural organic templates to enhance the dispersity of TiO2 and nitrogen in feathers was directly doped into TiO2 to improve the catalysts' response to visible light. Furthermore, the carbon in the chicken feathers acted as a transmission medium for electric charges, promoting the spatial separation of photo-induced carriers. Moreover, T3FN1 showed wide adaptability and stability within a pH range, with the degradation rate of TCH still reaching 83.15% after 5 cycles. Overall, due to its unique structure and photocatalytic performance, the catalyst holds great potential for practical wastewater treatment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
Y. U. K. U. N. Zhu, Q. I. U. Y. A. N. Wang, L. I. R. E. N. Deng, G. U. O. Zhou, Y. U. Y. A. N. G. Liu, Y. U. Huang
Summary: By rational design and parameter engineering of the TiO2-Pt core-satellite construction, visible light absorption in small Pt nanoparticles can be enhanced by nearly 100 times. A crucial step is to bury the Pt NPs completely in the high refractive index TiO2 microsphere, and the proposed evaluation factor for light absorption enhancement in the Pt NPs is proved to be valid and useful. These findings provide new possibilities for transforming nonplasmonic catalytic transition metals into visible light photocatalysts.
Article
Chemistry, Multidisciplinary
Mingzhuo Wei, Zhijun Li, Peijiao Chen, Lei Sun, Shilin Kang, Tianwei Dou, Yang Qu, Liqiang Jing
Summary: Nitrogen-rich doped anatase TiO2 nanoparticles were prepared via high-temperature nitridation based on H3PO4-modified TiO2. The associated defects were successfully healed by smart photo-Fenton oxidation treatment. The healed N-doped TiO2 exhibited significantly improved photocatalytic activity for acetaldehyde degradation under visible-light irradiation, attributed to the extended spectral response range, enhanced charge separation, and healed defect levels.
Article
Chemistry, Multidisciplinary
Donghwi Cho, Young-Seok Shim, Jae-Wook Jung, Sang-Hyeon Nam, Seokhwan Min, Sang-Eon Lee, Youngjin Ham, Kwangjae Lee, Junyong Park, Jonghwa Shin, Jung-Wuk Hong, Seokwoo Jeon
Review
Chemistry, Multidisciplinary
Jinseong Ahn, Seokkyoon Hong, Young-Seok Shim, Junyong Park
APPLIED SCIENCES-BASEL
(2020)
Review
Chemistry, Physical
Sang-Hyeon Nam, Gayea Hyun, Donghwi Cho, Seonggon Han, Gwangmin Bae, Haomin Chen, Kisun Kim, Youngjin Ham, Junyong Park, Seokwoo Jeon
Summary: Three-dimensional nanoarchitectures have shown unprecedented material performances in various applications, with proximity-field nanopatteming (PnP) being a promising technique for fabricating precise 3D nanostructures. Using phase masks, the PnP process offers advantages in stability and reproducibility, enabling the production of intricate 3D features.
Editorial Material
Chemistry, Multidisciplinary
Junyong Park
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Multidisciplinary
Seohan Yun, Jieun Lee, Taehyun Ryu, Junyong Park
Summary: This study proposes an efficient method for fabricating stretchable nanocomposites that dynamically increase opacity when stretched. By using a plate-shaped sugar cube as a template, a microporous PDMS sponge is prepared and a 3D continuous ultrathin alumina layer is conformally deposited onto it. When stretched, the modulus difference between PDMS and alumina generates scattering voids, allowing control of the transmittance change.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Chemical
Junyong Ahn, Taehyun Ryu, Junyong Park
Summary: Improving the solvent resistances of polymeric porous membranes by atomic layer deposition can effectively filter pollen grains and heavy metal microparticles in organic solvents.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Physics, Applied
Jinho Lee, Donghwi Cho, Haomin Chen, Young-Seok Shim, Junyong Park, Seokwoo Jeon
Summary: This review discusses recent advances in chemical and mechanical sensors based on three-dimensional nanostructures, as well as the manufacturing techniques and challenges. Designed three-dimensional nanostructures can improve the performance of sensor systems and achieve high-performance sensor devices.
APPLIED PHYSICS REVIEWS
(2022)
Article
Multidisciplinary Sciences
Jinseong Ahn, Junyong Park
Summary: This research systematically predicts the influence of relief height of a phase grating on the Talbot interference pattern under two-photon interference lithography through optical simulations. The study reveals the design error of the relief height of the phase grating inferred by the scalar approximation and presents the optimal condition that satisfies the pi-phase shift inferred by the full-vectorial numerical solution.
ADVANCED THEORY AND SIMULATIONS
(2022)
Article
Engineering, Environmental
Taehyun Ryu, Junyong Ahn, Junyong Park
Summary: A polyester track-etched (PETE) membrane with vertically perforated micropores is studied as a cost-effective candidate for transparent window filters. The pore size can be adjusted by depositing an ultrathin oxide layer on the PETE membrane via atomic layer deposition. The resulting composite membrane exhibits competitive filtration efficiency and can be easily cleaned, making it suitable for aesthetically pleasing window filters.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Junyong Ahn, Hyunsol Park, Taehyun Ryu, Junyong Park
Summary: In this study, a composite membrane with a 3D networked microporous structure was developed by coating an ultrathin Al2O3 layer on a hydrophilic mixed cellulose ester (MCE) membrane through low-temperature atomic layer deposition (ALD). The thickness of the deposited Al2O3 layer was precisely controlled without clogging the pores of the membrane. The ultrathin Al2O3 layer greatly enhanced resistance to environmental stimuli and improved the removal efficiency of airborne particulate matter (PM) due to the reduced pore size.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Composites
Huijin Seo, Jinseong Ahn, Junyong Park
Summary: This study introduces a method for fabricating hydrophobic coatings/films with three-dimensional hierarchical nanostructured surfaces. By densely impregnating an epoxy-based nanoporous template with silica nanoparticles, a hierarchically structured surface is created, resulting in a composite film with a higher contact angle for water droplets. The materials and processes developed in this study are expected to be used in various ways in the traditional coating/film field.
COMPOSITES RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Jinseong Ahn, Junyong Ahn, Junyong Park
FUNCTIONAL COMPOSITES AND STRUCTURES
(2020)
Review
Physics, Condensed Matter
Donghwi Cho, Junyong Park, Taehoon Kim, Seokwoo Jeon
JOURNAL OF SEMICONDUCTORS
(2019)
Review
Materials Science, Multidisciplinary
Changui Ahn, Junyong Park, Donghwi Cho, Gayea Hyun, Youngjin Ham, Kisun Kim, Sang-Hyeon Nam, Gwangmin Bae, Kisung Lee, Young-Seok Shim, Jade Nadine S. Ang, Seokwoo Jeon
FUNCTIONAL COMPOSITES AND STRUCTURES
(2019)
Review
Chemistry, Multidisciplinary
Kisung Lee, Hyewon Yoon, Changui Ahn, Junyong Park, Seokwoo Jeon
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.
