Article
Engineering, Chemical
Rafael Zarzuela, Ignacio Moreno-Garrido, M. L. Almoraima Gil, Maria J. Mosquera
Summary: Surface-modified Ag/TiO2 photocatalysts with enhanced activity under visible light and biocidal properties were prepared through a two-stage method involving the functionalization of TiO2 nanoparticles with -SH or -NH terminated alkoxysilanes and deposition of AgNPs. The functionalization process increased the yield of Ag deposition and promoted a more homogeneous distribution of Ag over the TiO2 surface. -NH functionalization achieved the highest stability, homogeneity, and visible range absorption, while -SH modification altered the size of AgNPs and reduced effectiveness due to the formation of Ag2S.
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, Physical
Chul-Jun Yoon, Sung-Hyun Lee, Yoo-Bin Kwon, Kyoungsoo Kim, Kun-Hong Lee, Seung Min Kim, Young-Kwan Kim
Summary: Incorporation of TiO2 nanoparticles onto carbon nanotube fibers enhances their thermal stability and structural integrity, resulting in sustainable mechanical and electrical properties as well as high photocatalytic activity under UV exposure. This demonstrates that the incorporation of TiO2 NPs is an efficient strategy to improve the long-term stability and applicability of CNTFs.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Ziyi Zhang, Zhangyi Xiong, Chuanchuan Zhao, Peijing Guo, Haijun Wang, Yongjun Gao
Summary: A carbon-coated TiO2 photocatalyst was successfully synthesized using a hydrolysis-carbonization strategy, with boric acid acting as a template to maintain particle size and butyl alcohol carbonized to enhance photocatalytic activity. The catalyst showed excellent hydrogen evolution ability and stability under Xenon lamp irradiation, with a band gap of 2.82 eV enabling hydrogen evolution under visible light. The presence of carbon on TiO2 reduced the band gap and improved photocatalytic activity for H2 evolution.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Organic
Chunbo Bo, Fei Chen, Qingqing Bu, Zhi-Hong Du, Min Li, Bin Dai, Ning Liu
Summary: A light-driven organocatalytic approach using 9,10-dibromoanthracene as a photocatalyst and N-fluorobenzenesulfonimide as an oxidant is reported for alkoxylation of the benzyl C-H bond. This reaction proceeds at room temperature and is capable of converting a variety of alkyl biphenyl and coupling partners, including a variety of alcohol and carboxylic acid, as well as peroxide, to the desired products under 400 nm light irradiation.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Young-Kwan Kim, Young-Jin Kim, Junbeom Park, Sang Woo Han, Seung Min Kim
Summary: This study explores the effects of purification on the mechanical and electrical properties of carbon nanotube (CNT) fibers, as well as the efficiencies of various surface modifications. Purification enhances the specific tensile strength and electrical conductivity of CNT fibers, and improves the efficiencies of surface modifications. Au nanoparticles grown on purified CNT fibers are denser, resulting in improved mechanical and physical properties for potential applications as fibrous catalysts.
Article
Environmental Sciences
Yu Liu, Lijun Liao, Liping Guo, Zhenzi Li, Xuepeng Wang, Decai Yang, Mingtao Wang, Shijie Wang, Wei Zhou
Summary: Developing photocatalytic technologies with high selectivity for pollutant removal is a significant challenge. In this study, a unique popcorn-stick-like nanocomposite was fabricated and exhibited distinguished photocatalytic activity for simultaneous removal of carbon particles and nitrogen dioxide.
ENVIRONMENTAL RESEARCH
(2024)
Article
Chemistry, Physical
Yoonsang Park, Hoang Tran Bui, Yurim Sohn, Cheolwoo Park, Bupmo Kim, Taehyung Lee, Daegun Kim, Dajin Lee, Kilwon Cho, Hyo Won Kim, Woosung Kwon, Wooyul Kim
Summary: In this study, nanocomposites composed of graphite-derived carbon dots (GCDs) and TiO2 were shown to have ligand-to-metal charge transfer (LMCT) activity across the entire visible-light spectrum. The effect of GCDs on the photocatalytic activity of TiO2 was investigated through the production of hydrogen peroxide and the degradation of pollutants. The research demonstrates the formation of an LMCT band in TiO2/GCD nanocomposites and provides a novel method for expanding the light-absorption spectrum of photocatalysts.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Analytical
Xiaoxia Jian, Jing Xu, Yiming Wang, Chenxi Zhao, Zhida Gao, Yan-Yan Song
Summary: The study evaluated a high-performance solid-state ECL H2O2 sensor based on MIL-88B(Fe) nanocrystal-anchored Ti microwires, showing ultrahigh sensitivity, long-term stability, and excellent photocatalytic activity in the visible-light range at the single-cell level. The electrode demonstrated synergistic effects between the TiO2 luminophore and the peroxidase-like activity of MIL-88B(Fe), making it suitable for cytosensing applications.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Pu Zhang, Haihua Zeng, Decai Wen, Xiaoyu Sui, Zhuan Wang, Ying Wang, Hailong Chen, Yuxiang Weng, Jinlin Long
Summary: This study demonstrates the efficient photocatalytic hydrogen evolution reaction (HER) by constructing well-defined single-site Ni-grafted TiO2 photocatalysts with unique coordination environments. The T-Ni Bpy catalyst exhibits high catalytic activity, with a rate and turnover frequency 260 times higher than those of Ni-O-TiO2. The electron paramagnetic resonance and femtosecond transient IR absorption measurements indicate that the presence of fewer electron trapped oxygen vacancies and a larger portion of long-lived photogenerated electrons are essential for achieving excellent HER activity.
Article
Green & Sustainable Science & Technology
Ricardo M. S. Sendao, Manuel Algarra, Eduarda Ribeiro, Mariana Pereira, Antonio Gil, Nuno Vale, Joaquim C. G. Esteves da Silva, Luis Pinto da Silva
Summary: In this study, the conjugation of carbon dots (CDs) with TiO2 nanoparticles was reported to prepare a photocatalytic nanocomposite for enhanced visible-light-driven photodegradation. The addition of CDs led to an increase in visible-light absorption and hindered the recombination of photogenerated charge carriers, resulting in a significant improvement in the catalytic performance of TiO2. The nanocomposites exhibited a different active species profile compared to bare TiO2, with superoxide radicals and hydroxyl radicals being the main active species. Additionally, a life cycle assessment showed that the nanocomposites had lower relative environmental impacts and the safety of the produced CDs was confirmed by in vitro assays. This study provides an important step towards the sustainable rational design of active visible-light-driven photocatalysts.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Environmental Sciences
Ximin Hu, Wenyuan Han, Manqi Zhang, Degang Li, Hongqi Sun
Summary: Carbon quantum dots (CQDs) were used to modify TiO2 and enhance its photocatalytic efficiency. Different amounts of CQDs modified TiO2 (CQDs-x/TiO2) were synthesized by a facile and environmental friendly hydrothermal method. The anchoring of CQDs increased the specific surface area of CQDs-x/TiO2, promoting the adsorption of organic pollutants and enhancing the rate of photocatalytic oxidation. CQDs-20/TiO2 showed the highest pollutant removal efficiency under visible light irradiation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Hyunchul Kim, Seonyoung Jo, Taek Seung Lee
Summary: Visible-light-driven composite photocatalysts were fabricated by chemically bound conjugated polymers (CPs) on a TiO2 surface to enhance photocatalytic efficiency and stability, as well as modify the hydrophilicity of the photocatalyst's surface for efficient reduction and oxidation reactions in water and organic solvents.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Physical
Mengdan Guan, Jin Wang, Kaili Wang, Junjie Wang, Rajkumar Devasenathipathy, Shunhao He, Liuyingzi Yu, Linrong Zhang, Haijiao Xie, Zhuoyao Li, Gang Lu
Summary: Photocatalytic evolution of hydrogen is an important research area, and the efficiency of visible light-driven photocatalysis can be enhanced by functionalizing Au/TiO2 nanocomposite with cysteamine molecules.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Martin Motola, Raul Zazpe, Ludek Hromadko, Jan Prikryl, Veronika Cicmancova, Jhonatan Rodriguez-Pereira, Hanna Sopha, Jan M. Macak
Summary: A reconstruction process of TiO2 nanotube (TNT) layers was conducted to enhance their photoelectrochemical performance and photocatalytic activity. By preparing double-wall (DW) TNT layers, etching the inner wall to obtain single-wall (SW) TNT layers, and coating with TiO2 coatings of different thicknesses, significant improvements were achieved in incident photon-to-electron conversion efficiency and photocatalytic performance compared to untreated TNT layers.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Panpan Zhang, Xu Wang, Yangyang Yang, Haifeng Yang, Chunsheng Lu, Mingru Su, Yu Zhou, Aichun Dou, Xiaowei Li, Xiaochuan Hou, Yunjian Liu
Summary: In this study, the influence of transition metal doping on the electronic and mechanical properties and electrochemical performance of 2HMoS2/NC was investigated using Cobalt (Co) as an example. Co doping was found to effectively improve the electronic conductivity and active site areas of 2H-MoS2/NC at different positions, optimizing the adsorption and diffusion capability of potassium ions. Furthermore, the study revealed the optimal roles of different types of nitrogen atoms in kinetic adsorption, diffusion, and interfacial stability of potassium ions. These findings provide guidance for the experimental design of high rate 2H-MoS2/NC electrode materials and the optimal design of other functional composite materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zeeshan Ajmal, Mahmood Ul Haq, Shahid Zaman, M. K. Al-Muhanna, Anuj Kumar, Mohammed M. Fadhali, Siwar Ben Hadj Hassine, Muhammas Qasim, K. F. Alshammari, Ghulam Abbas Ashraf, Abdul Qadeer, Adil Murtaza, Sulaiman Al-Sulaimi, Huaqiang Zeng
Summary: This study presents a novel heterojunction structure (SrTiO3/CN-TAL10.0) for enhanced photocatalytic water splitting (PWS). The incorporation of thiophenedicarboxaldehyde (TAL) through copolymerization significantly improves the photocatalytic activity of carbon nitride (CN) while maintaining its photostability performance. The optimized composition allows efficient isolation of photoinduced charge carriers and enhanced charge transport, resulting in a remarkable increase in overall photocatalytic efficiency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Angela Arnosa-Prieto, Patricia Diaz-Rodriguez, Manuel A. Gonzalez-Gomez, Pelayo Garcia-Acevedo, Lisandra de Castro-Alves, Yolanda Pineiro, Jose Rivas
Summary: Macrophages can exhibit different phenotypes depending on the microenvironment and the characteristics of magnetic iron oxide nanoparticles (MNPs). This study demonstrates that the concentration and morphology of MNPs can influence the polarization of macrophages. The findings have implications for therapeutics targeting tissue regeneration and tumor progression.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yu Fang, Cheng-Ye Zhu, Hao-Cheng Yang, Chao Zhang, Zhi-Kang Xu
Summary: This study demonstrates the advantages of vacuum-assisted interfacial polymerization (VAIP) in fabricating polyimide nanofiltration membranes. By using vacuum filtration, aqueous solutions of PIP can be evenly distributed on different microfiltration substrates, leading to the fabrication of uniform and ultra-thin polyamide layers with excellent performance. The membranes exhibit high rejection rates and water permeance, as well as satisfactory long-term stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Isaac J. Gresham, Edwin C. Johnson, Hayden Robertson, Joshua D. Willott, Grant B. Webber, Erica J. Wanless, Andrew R. J. Nelson, Stuart W. Prescott
Summary: Understanding the interactions between polymers and surfactants is crucial for optimizing commercial systems. This study tested the behavior of polymer-surfactant systems, revealing that they do not behave like polyelectrolytes in the presence of salt. Additionally, the structure of polymer-surfactant complexes under confinement differs from that of polyelectrolytes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yunxiao Xie, Cui Liu, Jie Zhang, Yan Li, Bin Li, Shilin Liu
Summary: This study aimed to improve the microstructure and rheological properties of W/W Pickering emulsions by crosslinking sodium alginate at the water-water interface, thereby enhancing the activity of encapsulated probiotics in simulated gastrointestinal digestion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Sang Ho Lee, Yige Sun, Patrick S. Grant
Summary: This research developed an effective approach to enhance the charging rates of lithium ion batteries (LIBs) by strategically incorporating carbon nanotube (CNT) conductivity boosters into Li4Ti5O12 (LTO) electrodes. Multi-layer architectures comprising CNT-rich and CNT-free LTO electrode layers were manufactured using a layer-by-layer spray coating method to promote charge transfer kinetics of high mass loading electrodes. The best performing multi-layer was paired with a spray-coated LiFePO4 (LFP) positive electrode, resulting in attractive power performance that outperformed conventional LTO || LFP combinations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jingwei Liang, Shaobin Li, Fengbo Li, Li Zhang, Yufeng Jiang, Huiyuan Ma, Kun Cheng, Liang Qing
Summary: A molybdenum-regulated self-supporting electrode material with rich vacancy defects has been successfully synthesized and shows exceptional catalytic activities and stability for electrocatalytic overall water splitting. This study provides a new perspective for the design and synthesis of non-precious metal bifunctional electrocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jonas Blahnik, Jennifer Schuster, Rainer Mueller, Eva Mueller, Werner Kunz
Summary: This study investigates the relationship between the morphology of PMMA monopolymers and PMMA-PHEMA copolymers with the expected nature of surfactant-free microemulsions (SFMEs) before polymerization. It is found that previously mesostructured, surfactant-free mixtures can produce porous polymers of different morphologies, while unstructured, oil-rich regions lead to solid, transparent polymers without nanostructured morphologies. Additionally, a surfactant-based reference system shows similar phase behavior and polymer morphologies as the comparable surfactant-free system, indicating the importance of the hydrotropic behavior of HEMA in this system.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zheng-Fen Pu, Wen-Zhi She, Rong Sheng Li, Qiu-Lin Wen, Bi-Chao Wu, Chun-Hua Li, Jian Ling, Qiue Cao
Summary: This study synthesized two framework-isomeric covalent organic frameworks (COFs) and discovered that the light scattering signal of COFs can be used for the analytical detection of lead ions. By controlling synthesis conditions and introducing regulators, the morphology of COFs could be controlled and framework-isomeric COFs could be precisely synthesized.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yuchen Weng, Ying Hong, Jingyu Deng, Sicheng Cao, Li-Juan Fan
Summary: This paper reports the preparation of dynamic color-changing fluorescent polymer nanoparticles (PNPs) by constructing a fluorescence resonance energy transfer (FRET) pair. The PNPs show excellent anti-counterfeiting effects and reproducibility. The study demonstrates a promising encryption strategy that can achieve multiple outputs with simple operation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Guodong Liu, Zijian Wang, Jianing Wang, Hanbin Liu, Zhijian Li
Summary: This study investigates the combination of multicolor switchable polyaniline (PANI) electrode and 1-methyl-4,4'-bipyridyl iodide (MBI), which demonstrates superior optical properties in visible and near-infrared light modulation, as well as excellent electrochemical performances. This combination can be used to develop novel electrochromic devices for applications in smart packaging, smart labels, and flexible smart windows.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Huying Yan, Yang Guo, Xingzhi Bai, Jiawei Qi, Haipeng Lu
Summary: By modifying Ti3C2Tx through heterogeneous interface engineering, optimized impedance matching is achieved, leading to enhanced electromagnetic wave absorption performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Kehu Zhang, Yang Zhou, Silvia Moreno, Simona Schwarz, Susanne Boye, Brigitte Voit, Dietmar Appelhans
Summary: This article presents an advanced crosslinking strategy to fabricate clustered polymersomes using host-guest interactions. By controlling the input of crosslinker and environmental conditions, reversible aggregation and disassembly of these polymersomes can be achieved. The size and structure of these clustered polymersomes can be regulated and visualized through a fluorescent enzymatic cascade reaction.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Junjie Xu, Weixiong Huang, Ruiling Li, Li Li, Jinjin Ma, Jiaou Qi, Haiyan Ma, Min Ruan, Lilin Lu
Summary: In this study, a potassium doped palladium catalyst was developed for acetylene hydrogenation, showing excellent catalytic performance and durability. The doping of potassium effectively weakened the adsorption of ethylene, improved ethylene selectivity, and lowered the barriers of hydrogen activation and transfer reactions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)