Article
Chemistry, Applied
Koichiro Hojo, Tsukasa Takahashi, Kazumasa Oshima, Takamasa Haji, Yuki Terayama, Hiroshige Matsumoto, Shigeo Satokawa
Summary: The study found that zeolites with a high number of surface silanol groups exhibit higher conductivity in water, indicating the important role of surface silanol groups in increasing the conductivity of zeolite in water. The mechanism of conduction is similar to the Grotthuss mechanism.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Yicheng Ye, Qiaohong Zhang, Guoying Weng, Zhuwei Zhu, Zhenguo Lyu, Chen Chen
Summary: The research introduced a simplified reverse-phase microemulsion method to introduce a high content of alkylamino and n-propyl on the surface of SiO2 nanospheres, resulting in the formation of surface nano-bulges and exposure of a high ratio of silicon species. The abundant surface groups enabled the material to exhibit high catalytic performance and achieve high conversion in the Aldol condensation reaction.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiongxi Shi, Yang Xu, Yan Zhang, Jiwen Si, Peiping Zhang, Wenqing Li, Yan Wang, Wei Zhang, Qian Gao, Shiding Miao
Summary: Two types of iron sulfide, highly crystalline pyrite and greigite, were synthesized via a hot-injection method and used in photo-Fenton catalytic reactions to degrade the organic dye Rhodamine B. The degradation efficiency of RhB by greigite reached 99.0% in 22 minutes under sunlight irradiation, while a similar removal efficiency was realized by pyrite in 35 minutes. The surface states of iron sulfides were found to be the main factors affecting the catalytic efficiency in the photo-Fenton reaction.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Qi Li, Jie Ren, Ying-juan Hao, Yi-lei Li, Xiao-jing Wang, Ying Liu, Ran Su, Fa-tang Li
Summary: The study found that hydroxyl radicals in H-BiOCl have a reverse inhibitory effect on the ring-opening reaction in the photocatalytic mineralization process of toluene, while C-BiOCl shows superior ability and stability in mineralizing toluene. This is because C-BiOCl lacking hydroxyl groups can selectively generate benzoic acid by holes and superoxide anion radicals; whereas H-BiOCl with a large number of hydroxyl groups will lead to the production of hydroxyl radicals and phenolic intermediates, reducing the performance and stability of the catalyst.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Environmental Sciences
Dongpo Liu, Muxin Lin, Weirui Chen, Jing Wang, Xingmei Guo, Xukai Li, Laisheng Li
Summary: F-Fe-MCM-41 catalyst was successfully synthesized by co-doping F and Fe into the framework of MCM-41, effectively solving the hindrance of hydrophilic silanol to its interfacial reaction with O3 and pollutants. F-Fe-MCM-41 exhibited excellent catalytic activity and stability, indicating its significant application value in water treatment.
Article
Chemistry, Multidisciplinary
Souma Yoshida, Naoya Murakami, Yoshiyuki Takatsuji, Tetsuya Haruyama
Summary: In this study, the authors found that dissociated nitrogen (N-atom) had a greater impact on ammonia selectivity in the plasma/liquid interfacial reaction compared to excited nitrogen molecules. By connecting the reaction locus with a high N-atom generation device, they achieved high selectivity in aqueous ammonia production while minimizing the formation of aqueous nitrate ions. The researchers also observed the release of oxygen and hydrogen atoms from water, forming NO and hydrogen gas, which further improved the ammonia synthesis selectivity.
Article
Chemistry, Physical
Xuewen Wang, Yang Zhang, Hao Mei, Haiping Xu, Lei Gan, Rongbin Zhang
Summary: The study focused on regulating the surface structure of BiOBr nanosheets to enhance their photocatalytic performance, using mesoerythritol (ME) containing multiple hydroxyl groups. By successfully improving the oxidation capability and positive response to hydroxyl radicals, the ME-regulated BiOBr nanosheets demonstrated rapid degradation of organic compounds.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Jee-Yee Chen, Hannah Pineault, Nicholas A. Brunelli
Summary: This study investigates the catalytic activity of aminosilica materials on a per site basis and reveals four types of catalytic sites. The results suggest a cooperative interaction between amines and different types of silanols at high activity sites, offering the potential to create highly active catalytic materials.
JOURNAL OF CATALYSIS
(2022)
Article
Engineering, Environmental
Hui Ding, Lingxiao Xue, Jiahao Cui, Yongqiang Wang, Dan Zhao, Xing Zhi, Rui Liu, Jianfeng Fu, Shejiang Liu, Bingfeng Fu, Jiahui Shi, Ximeng Xu, Gang Kevin Li
Summary: This study demonstrates a solution to thoroughly degrade benzene at ambient conditions using atomically dispersed iron in porous carbon. Experimental and molecular simulation studies reveal the mechanism of this catalytic reaction and identify the crucial role of hydroxyl radicals. This work not only provides a new method for degrading aromatic compounds under environmental conditions, but also offers a pathway to generate active hydroxyl radicals for the remediation of organic pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Cristina Pavan, Guillermo Escolano-Casado, Chiara Bellomo, Stefania Canana, Maura Tomatis, Riccardo Leinardi, Lorenzo Mino, Francesco Turci
Summary: Crystalline silica is a hazardous material that can cause severe diseases. The specific characteristics of crystalline silica, such as crystal structure and surface chemistry, determine its level of toxicity. Recent research has shown that the presence of nearly free silanols on different crystalline silica polymorphs plays a crucial role in their interaction with biomembranes and their potential toxicity.
FRONTIERS IN CHEMISTRY
(2023)
Article
Engineering, Environmental
Weijia An, Huan Wang, Tao Yang, Jiefan Xu, Yushan Wang, Dong Liu, Jinshan Hu, Wenquan Cui, Yinghua Liang
Summary: Fe-doped three-dimensional flower-like structures BiOBr (Fe-BiOBr) with rich surface oxygen vacancies (OVs) were prepared and showed high degradation activity in the presence of H2O2 and visible light irradiation. The Fe-BiOBr composites not only exhibited good removal efficiency for phenolic compounds and coking wastewater, but also had good structural stability. The oxygen vacancies played a crucial role in promoting the photocatalytic-Fenton synergistic degradation activity by improving carrier separation efficiency and acting as the adsorption and activation site of H2O2 to produce hydroxyl radicals.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Xu Zhang, Daniel Dianchen Gang, Xiaobo Lei, Tiejun Wang, Qiyu Lian, William E. Holmes, Ling Fei, Mark E. Zappi, Hong Yao
Summary: This study investigates the activation of peroxymonosulfate (PMS) by amorphous FeOOH for the degradation of sulfamethoxazole (SMX). The amorphous FeOOH shows better performance than crystallized alpha-FeOOH and beta-FeOOH in decomposing PMS and degrading SMX. The mechanism of PMS activation by amorphous FeOOH is mainly through surface-bound radicals. The presence of H2PO4- significantly inhibits the degradation of SMX, suggesting competitive adsorption as the cause. The amorphous FeOOH exhibits better degradation efficiency of SMX in acidic conditions and enhanced reduction efficiency of Fe(III) due to its excellent conductivity.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Xiao Xu, Haotian Liu, Jian Wang, Ting Chen, Xing Ding, Hao Chen
Summary: The surface hydroxyl groups (SHGs) on the interface of nanomaterials play a crucial role in environmental purification technologies, influencing reaction kinetics, energetics, and mechanisms, and are important in the removal of harmful substances. Further research on SHGs' chemical behavior can help innovate environmental catalysis theories and design catalysts with better performance.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Meijiang Liu, Huifang Liu, Ning Li, Chaofeng Zhang, Jian Zhang, Feng Wang
Summary: This study reveals a synergistic effect of photogenerated holes and superoxide radicals for the selective oxidation of glycerol to formic acid over a TiO2 catalyst. By controlling the oxygen and water contents, surface active species can be controlled to solve the problem of formic acid peroxidation.
Article
Environmental Sciences
Liu-Xi Yang, Jia-Cheng E. Yang, Ming-Lai Fu
Summary: Porous magnetic CoFe2O4 nanocrystals were synthesized using bimetal-organic framework as a precursor and used as catalysts for the removal of chloramphenicol. The CoFe2O4 NCs showed high degradation efficiency and removal of total organic carbon during the removal of CAP.
Article
Biophysics
Cristina Potrich, Anna Pedrotti, Cecilia Pederzolli, Lorenzo Lunelli
Summary: This study developed different functional surfaces for capturing exosomes and verified their effectiveness through experiments. Among them, the negatively-charged surface performed the best, capturing a large number of exosomes and successfully analyzing their biomarkers.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Brojendra Nath Saren, Srushti Mahajan, Mayur Aalhate, Rahul Kumar, Essha Chatterjee, Indrani Maji, Ujala Gupta, Santosh Kumar Guru, Pankaj Kumar Singh
Summary: This study developed P-selectin-targeted dasatinib nanoparticles coated with chitosan and fucoidan (DST-CH-FUC-NPs), which showed sustained release, reduced hemolytic potential, increased cytotoxicity and cellular uptake compared to free dasatinib. These nanoparticles also demonstrated enhanced ROS production, mitochondrial membrane potential damage, apoptosis induction, cell migration inhibition, and disruption of lysosomal membrane integrity.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Weiping Deng, Xiaohui Li, Ya Li, Zhongbing Huang, Yulin Wang, Ning Mu, Juan Wang, Tunan Chen, Ximing Pu, Guangfu Yin, Hua Feng
Summary: This study demonstrates the importance of chirality in nerve repair by constructing a GO-phenylalanine derivative hydrogel system. In vivo experiments show that the dextro group significantly improves functional recovery and histological restoration in rat sciatic nerve repair models. The doped GO promotes angiogenesis and myelination. These results suggest that chirality plays a crucial role in promoting nerve regeneration.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Xiaoyan Wang, Jin Gao, Yu Gao, Linlin Zhang, Congchao Xu, Qintong Li, Lin Li, Jianliang Xue
Summary: In this study, a highly effective surfactant producer strain, Bacillus Cereus GX7, was isolated from the oil tank bottom sludge of Shengli Oil Field in China. The biosurfactant produced by GX7 was identified as surfactin, a lipopeptide surfactant, through TLC, FT-IR, and LC-MS/MS analysis. The fermentation process of GX7 was optimized using single-factor experiments, focusing on the composition of fermentation medium and fermentation conditions. Glucose and peptone were found to be the best carbon and nitrogen sources, and the optimum temperature, inoculum amount, pH, rotation speed, and fermentation time for the strain were determined to be 30°C, 1%, 7.5, 150 rpm, and 48 h, respectively. After optimization, the surface tension and emulsification index of the fermentation broth were 26.84 mN/m and 57.84%, respectively. Furthermore, the biosurfactant produced by GX7 demonstrated good stability over a wide range of temperature, pH, and salt concentration.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Rodney Marcelo do Nascimento, Christine Grauby-Heywang, Houssem Kahli, Nesrine Debez, Laure Beven, Ivan Helmuth Bechtold, Touria Cohen Bouhacina
Summary: This article presents a theoretical model based on thermodynamic rules to assess the early stages of bacterial biofilm formation on different material surfaces. By utilizing morphological characteristics of bacteria and Atomic Force Microscopy images, the model generates a dataset of energetically minimized states, which can be correlated with bacterial adhesion states.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Filipa A. L. S. Silva, Licinia Timochenco, Raquel Costa-Almeida, Jose Ramiro Fernandes, Susana G. Santos, Fernao D. Magalhaes, Artur M. Pinto
Summary: The study demonstrates that by photoreducing nanosized graphene oxide using ultraviolet radiation, nanometric particles with high light-to-heat conversion efficiency and water stability can be obtained. These nanomaterials exhibit high absorption in the near-infrared region and show no cytotoxicity towards human cells, indicating their potential for safe therapy.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
D. Costa, V. De Matteis, F. Treso, G. Montani, M. Martino, R. Rinaldi, M. Corrado, M. Cascione
Summary: This review primarily discusses the relationship between contact lens discomfort (CLD) and the surface properties of contact lenses (CLs), specifically the coefficient of friction (CoF). The review emphasizes the importance of introducing a standardized protocol for measuring CoF and calls for a more precise evaluation of the relationship between surface properties and comfort in CLs users.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Debdip Brahma, Tamal Sarkar, Rupal Kaushik, Akshay Narayan Sarangi, Amar Nath Gupta
Summary: This in-vitro study evaluates the effect of reactive oxygen species (ROS) on the structural rearrangement of elastin. The results show that oxidative stress leads to a decrease in protein size and changes in secondary structure, potentially promoting protein aggregation. This study is important for therapeutics aiming to prevent elastin degradation and aging.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Xin Yang, Qiang Wang, Chaoxi Yan, Degang Huang, Yinchang Zhang, Huazheng He, Shouliang Xiong, Congming Li, Pingbo Chen, Tingjun Ye, Dan Hu, Lei Wang
Summary: This study presents a practical and effective strategy to improve osseointegration in patients with osteoporosis. By coating titanium implants with polydopamine followed by strontium modification, the bi-functional implants promote bone regeneration and immune regulation. The results show good biocompatibility, sustained release of strontium ions, and stable osseointegration between bone tissues and implants.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Sengwang Fu, Jianping Zhu, Zhijun Jiang, Yue Cao, Yufei Chen, Lihao Zhang, Sunlong Li, Weipeng Lu, Chengbin Miao, Qing He, Qi Li, Weixing Zhang, Lehao Ren, Yachun Li, Hongchao Shi, Cihui Liu
Summary: Effective management of biofluids is crucial for in vivo surgical interventions. Recent advances include self-sealing needles, drug-eluting stents, and shear-thinning hydrogels. However, complications associated with intestinal mucosal injury and secondary damage still persist. In this study, researchers developed an interpenetrating Janus wettability stent coating that enables unidirectional draining of excessive biofluid. They also demonstrated directional biofluid movement using a self-pumping dressing with potential applications in biofluid collection and disease diagnosis through metal ion detection. This integrated system presents an opportunity for designing wound dressings with effective biofluid management and metal ion detection capabilities.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Maryam Hassani, Mojtaba Kamankesh, Mazda Rad-Malekshahi, Kobra Rostamizadeh, Farhad Rezaee, Ismaeil Haririan, Seyed Mojtaba Daghighi
Summary: Bacterial adhesion and biofilm formation on the surface of biomaterial implants is a critical problem, and a polymer brush coating with antiadhesive and antimicrobial properties has proven to be highly effective in resolving this issue.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Huaihong Zhang, Na Liu, Yuting Zhang, Hui Cang, Zhaosheng Cai, Ziqun Huang, Jun Li
Summary: A functionalized cationic polymer, CR-PQAC, was designed and synthesized for photothermal enhanced antimicrobial therapy. The CR-PQAC nanoparticles exhibited significant antibacterial activity and low cytotoxicity against mammalian cells.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Ipsita Sahu, Priyadarshi Chakraborty
Summary: Peptide nanotechnology bridges the gap between materials and biological worlds by utilizing self-assembly of short-peptide building blocks. Hydrogels engineered from these short peptides show great potential in biomedical applications, but their weak mechanical properties and limited functional diversity need to be addressed. Nanoengineering the networks of these hydrogels by incorporating small molecules, polymers, and inorganic/carbon nanomaterials can enhance their mechanical properties and expand their functional diversity.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Hao Wei, Yajun Gu, Ao Li, Panpan Song, Dingding Liu, Feihu Sun, Xiaofeng Ma, Xiaoyun Qian
Summary: In this study, a stable three-dimensional conductive hydrogel was prepared by cross-linking MXenes to Matrigel hydrogel. The conductive hydrogel promotes the proliferation and differentiation of NSCs, providing new strategies for neural tissue engineering.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Biophysics
Yue Zhong, Xiaoli Ge, Juan Zhang, Qun Wei, Feng Wang, Yongke Zhong
Summary: The effect of oxygenic groups on the hemocompatibility of activated carbon was studied through liquid-phase oxidation and subsequent heat treatment. Results showed that the presence of oxygenic groups improved hemocompatibility, while their removal decreased it.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)