Article
Materials Science, Multidisciplinary
Shanlin Ke, Caixia Kan, Xingzhong Zhu, Changshun Wang, Weijian Gao, Zhaosheng Li, Xiaoguang Zhu, Daning Shi
Summary: This study demonstrates a synthetic strategy to fabricate highly porous Au-Ag alloy nanorods and shows their superior catalytic properties in the oxidation and reduction reactions. The results indicate that the porous alloy nanorods possess higher catalytic activity and chemical stability compared to core-shell structures, providing a predictive design approach for high-performance alloy catalysts in the future.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Optics
Jun Dong, Yuchong Ren, Kangzhe Zhao, Jiaxin Yuan, Qingyan Han, Wei Gao, Jihong Liu, Lipeng Zhu, Zhiyu Zhang, Jianxia Qi
Summary: This paper discusses a method for fabricating highly active SERS substrates by assembling Au-Ag alloy nanoparticles (NPs) using a direct current (DC) electric field. Different nanostructures can be obtained by adjusting the intensity and action time of the DC electric field. The Au-Ag alloy nano-reticulation (ANR) substrate obtained under the condition of 5mA*10 min shows excellent SERS activity with an enhancement factor of the order of magnitude of 106. The ANR substrate has good uniformity of Raman signal and can detect multiple molecules with low concentrations. It also has potential for practical applications as it can detect molecules far below the safety standard.
Article
Chemistry, Physical
Jessica Rodriguez, David Vesseur, Alexis Tabey, Sonia Mallet-Ladeira, Karinne Miqueu, Didier Bourissou
Summary: A (MeDalphos)AuCI complex has been discovered to efficiently catalyze the cross-coupling reaction of indoles and allyl acetates/alcohols. The reaction tolerates various functional groups and selectively produces branched C3-allylated products. It utilizes the hemilabile character of the P<^>N ligand.
Article
Chemistry, Multidisciplinary
Seiji Ogo, Takeshi Yatabe, Tamon Tome, Riko Takenaka, Yoshihito Shiota, Kenji Kato
Summary: In this study, a homogeneous catalyst is used to synthesize hydrogen peroxide using H2 and O2 in water, eliminating the need for flammable H2/O2 mixtures and cocatalysts. The catalyst is capable of extracting electrons from H2, storing them for the reduction of O2, and then converting the reduced oxygen to H2O2. The catalyst exhibits the highest turnover number (TON) among all homogeneous catalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Shan He, Bin Wu, Ziwei Xia, Panxiang Guo, Yao Li, Shiqiang Song
Summary: Gamma-graphyne was synthesized using a one-pot method via a Pd-catalyzed decarboxylative coupling reaction. It showed superior catalytic activity for the reduction of 4-nitrophenol with short reaction time and high yields, even in aqueous media.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Physical
Ling Chen, Yonglei Du, Ying Lv, Daoqing Fan, Junfei Wu, Lingbao Wu, Mengting Cui, Haizhu Yu, Manzhou Zhu
Summary: The redox property of small alloy AuAg nanoclusters has been investigated and found to mediate both the decomposition of H2O2 and the reduction of NADH. The hydrogen bonding between the carboxylic groups on the surface of the nanoclusters and the amino N-H bonds on NAD is identified as the driving force for the reduction reaction. This discovery opens up new possibilities for the biological applications of metal nanoclusters.
Article
Chemistry, Physical
Mariana Rocha, Clara Pereira, Cristina Freire
Summary: A method for fabricating TiO2-supported nano-Au and Ag catalysts with enhanced activity in nitroarenes reduction was presented by immobilizing metal NPs onto TiO2 through metal precursors adsorption and in situ metal cations reduction. The type of reducing agent used influenced the size, oxidation state, and loading of the grafted metal NPs, resulting in Au and Ag nanocomposites with different characteristics and catalytic performances in the reduction of 4-nitrophenol and 4-nitroaniline. Au/Ag-based nanocomposites prepared with NaBH4 and citric acid showed efficient catalytic activity with high substrate conversion rates under mild conditions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Polymer Science
Nadezhda A. Samoilova, Maria A. Krayukhina, Alexander A. Korlyukov, Zinaida S. Klemenkova, Alexander V. Naumkin, Yaroslav O. Mezhuev
Summary: Colloidal Au/ZnO and Ag/ZnO nanohybrid structures were synthesized via a one-pot method. Copolymers were used as templates for metal cation sorption and stabilization. The process was carried out under mild conditions in an alkaline medium without additional reagents. The heterostructure formation kinetics were influenced by the nature of the copolymer and noble metal cations used.
Article
Chemistry, Physical
Xinzhu Pang, Nathan Skillen, Detlef W. Bahnemann, David W. Rooney, Peter K. J. Robertson
Summary: Hydrogen peroxide (H2O2) is an important chemical for organic synthesis, environmental remediation, and liquid fuel. This study explored the photocatalytic generation of H2O2 using different catalysts, and found that Au/ZnO showed the best performance. The presence of Au on ZnO accelerated the generation and adsorption of H2O2, while Ag atoms on Ag/ZnO were unstable and decreased the yield of H2O2.
Article
Chemistry, Analytical
Huizhen Yang, Jiayin Li, Yan Rao, Linan Yang, Yadong Xue, Yu Zhang, Zhanjun Yang, Juan Li
Summary: An ultrasensitive multiplex surface-enhanced Raman scattering (SERS) immunoassay was developed using porous Au-Ag alloy nanoparticles and photonic crystal microspheres. The method displayed ultrahigh sensitivity, wide linear range, and excellent specificity, making it suitable for detecting tumor markers in clinical serum samples.
Article
Nanoscience & Nanotechnology
Zengsen Sun, Xinhao Wu, Daqin Guan, Xiaoyi Chen, Jie Dai, Yuxing Gu, Sixuan She, Wei Zhou, Zongping Shao
Summary: A novel silver and silver-doped ceria (Ag/CeO2) nanocomposite catalyst synthesized by a facile one-pot coprecipitation method shows high efficiency and activity in converting CO2 into CO due to its rich 3D interface and high Ce3+ concentration. The strong interfacial interaction between Ag and CeO2 enables improved durability during electrolysis, with accelerated CO formation rate being the main factor contributing to the superior ECR performance of Ag/CeO2.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Jie Zhang, Weixiang Geng, Lei Shi, Chun Yang, Xiaoxin Zhang, Yi Geng, Rajan Arjan Kalyan Hirani, Xinyuan Xu, Juntao Wei, Yu Jing, Shu Zhang, Hong Zhang, Shaobin Wang, Hongqi Sun
Summary: In this study, boron and nitrogen co-doped porous nanocarbons (BNC) were synthesized as promising metal-free catalyst materials. The resulting BNC catalysts showed controllable morphologies and tunable ratios, and exhibited outstanding hydrogenation reduction performance and acceptable recyclability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zhuo-Rui Li, Bo Jiang, Xiao-Hui Zhang, Guo-Zhi Han
Summary: In this paper, a novel pompon-like magnetic hollow SiO2-supported Ag (SiO2@Ag) nanoparticles were developed and characterized for their structure and catalytic performance. The results show that these nanoparticles exhibit broad-spectrum catalytic activity for the reduction of aromatic nitro compounds.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
B. Akilandaeaswari, Karuppiah Muthu
Summary: In this study, Au-Ag BNPs were successfully synthesized through ultrasound-assisted green synthesis. The effects of extract volume, metal ions concentration, pH, and temperature on the synthesis of Au-Ag BNPs were investigated to determine the optimal conditions. The synthesized Au-Ag BNPs exhibited strong photocatalytic degradation activity under UV-vis light source.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Biophysics
Hyeon Ji Park, Yuseon Kim, Tae Hyeon Yoo
Summary: Various methods have been reported to detect and quantify biomarkers. One recent approach involves simple homogeneous methods based on proximity proteolysis reactions (PPR) to detect biological molecules. By linking protease and zymogen to target binders using specific hybridization, several kinds of analytes can be detected at subnanomolar concentrations with a one-step procedure and color signal.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Physical
Wenjing Tan, Chunmei Gao, Shifeng Ji, Yunqing Xing, Yi Guo, Baogui Liang
Summary: Membrane separation technology is widely used in wastewater treatment due to its cost-effectiveness and productivity. However, organic membrane fouling caused by humic acid is a major barrier to its further development. This study successfully addressed this issue through the production of composite materials and self-cleaning membranes, providing beneficial strategies and solutions for membrane contamination problems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Qichang Peng, Qingdong Ruan, Bin Wang, Jinyuan Liu, Chao Huang, Xingwang Zhu, Dan Li, Liangliang Liu, Yinchuan Wang, Xiaolin Zhang, Jia Yan, Paul K. Chu, Hui Xu
Summary: The escalating issue of water pollution has led to significant attention in the field of photocatalysis. In this study, OV-Sb2WO6-X photocatalyst with oxygen vacancies was synthesized, which exhibited enhanced charge separation efficiency and improved photocatalytic activity. The introduction of oxygen vacancies was successfully controlled and characterized, and the modified photocatalyst showed superior degradation efficiency for dye wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wangcheng Zhang, Cunchuan Zheng, Hu Xie, Weichao Du
Summary: By using a specific curing agent ETB, the problem of dispersion and stability for oily epoxy resin in cement slurry system has been successfully solved. The application of the emulsified curing agent ETB in oilfield cement slurry system shows good rheological performance, resistance to high temperature and high pressure water loss, and corrosion resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
O. I. Krivonos, A. Babenko, O. B. Belskaya
Summary: This study synthesized biochar based on sapropel and investigated the effects of chemical modification on its textural characteristics, acid-base properties, and adsorption properties. The results showed that the chemical modification increased the fraction of micropores, specific surface area, and changed the surface properties of biochar. The experiment also revealed that biochar pretreated with alkali exhibited the maximum adsorption capacity for copper ions. A conceptual model identifying the mechanisms of copper adsorption on sapropel-based biosorbent was proposed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
H. Lachhab, N. Benzbiria, A. Titi, S. Echihi, M. E. Belghiti, Y. Karzazi, A. Zarrouk, R. Touzani, C. Jama, F. Bentiss
Summary: The corrosion inhibitory potency of two new pyrimidine-pyrazole derivatives, PPA and PPC, was evaluated for mild steel in 1 M HCl. The results showed enhanced inhibition activities with increased concentration, reaching maximal values of 91.15% and 92.39% for PPA and PPC, respectively. However, the mitigation potency decreased with increasing temperature. SEM and XPS analysis revealed that PPA and PPC adsorbed on the mild steel surface, forming a shielding layer that prevented the dissolution of the steel in the acidic solution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Shanmugapriya Sivalingam, D. Jeya Sundara Sharmila, Goutham Golla, Lakshmanan Arunachalam, Tarunendu Singh, G. Karthikeyan, A. Shanthi, Kannan Malaichamy
Summary: This study aims to develop a nano-biofungicide comprising of volatile essential oil molecules to enhance its efficacy in the field of agriculture through easily scalable green synthesis technique. The nano biofungicide was prepared through one pot hot melt ultrasonication technique with easy water dispersibility and long term stability. The physico-chemical analysis revealed that, nano bio-fungicides were amorphous sphere-shaped nanoparticles with low melting point. The encapsulation efficiency of major components of essential oil was determined, and it was found that they followed Higuchi model of release kinetics. The essential oil loaded nanostructured lipid carrier showed significantly higher mycelial growth inhibition compared to pure essential oil, indicating enhanced bio-efficacy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yinlong Li, Yingqing Zhan, Yiwen Chen, Hongshan Jia, Ximin Chen, Fei Zhu, Xulin Yang
Summary: In this study, ZnO quantum dots decorated MXene nanosheets were used as a functional filler for waterborne epoxy coating. The improved dispersion and synergy of ZnO QDs and MXene nanosheets enhanced the anticorrosion performance of the coating.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Fucheng Guan, Jing Tao, Qiang Yao, Zheng Li, Yihang Zhang, Shi Feng, Jianbin Sun, Qiang Yang, Xuecui Song, Jing Guo, Yuanfa Liu
Summary: This paper presents a method for preparing adsorbent materials based on biomass that can efficiently adsorb methylene blue. The experimental results show that the material has a hierarchical structure, high adsorption capacity, and reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Pengfei Hu, Zuli Mo, Weiliang Wang, Chengzhe Li, Zhaojia Guo, Guanqing Lin, Zhimin Guo
Summary: This study developed a novel in-situ particle vision and measurement (PVM) system to investigate heterocoagulation between coarse and fine particles in mineral processing. The experimental results showed that the degree of heterocoagulation decreased with increasing pH and stirring speed. Furthermore, under certain hydrodynamic conditions, coal particles were more distributed at the rear of the glass bead.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Tanveer ul Haq Zia, Anwar ul Haq Ali Shah, Behisht Ara, Kashif Gul
Summary: A label-free immunosensor for detection of hepatitis C core antigen was fabricated using a ternary nanocomposite based on polypyrrole, silver doped zinc oxide, and exfoliated graphene. The immunosensor demonstrated low detection limit, high selectivity, and stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoyan Feng, Jiachen Li, Lijun Liang, Linli Zhu, Sa Liu, Li Ren
Summary: In this study, polystyrene divinylbenzene microspheres were surface-modified by poly(carboxybetaine methacrylate) to develop an efficient hemoperfusion adsorbent for the removal of protein-bound toxins. The modified microspheres showed increased adsorption capacity and better biocompatibility, making them promising for clinical hemoperfusion therapy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoye Bi, Dong Xue, Yunpeng Wang, Chencheng Lv, Zexiong Li, Tao Zhao
Summary: This research aimed to develop a durable and formaldehyde-free flame retardant treatment for cotton fabrics. The results demonstrated successful grafting of phosphorous acid (PA) onto cotton fabrics, leading to enhanced flame resistance while maintaining the desired fabric characteristics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Ruolin Wang, Wenjuan Sun, Haisheng Han, Dongping Tao
Summary: This study finds that Al-starch colloidal depressants can effectively inhibit the flotation of ultrafine calcite and chlorite, and increase the grade of valuable minerals. The chemisorption of Al-starch on mineral surface changes the functional group peaks and generates new O-Al functional groups.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wondimu K. Wakejo, Ali Maged, Beteley T. Meshesha, Joon W. Kang, Abayneh G. Demesa, Sandip Chakrabarti, Thallada Bhaskar, Ashok Kumar Gupta, Amit Bhatnagar
Summary: Simultaneously removing different pharmaceutical pollutants from wastewater is an important environmental issue, and the use of a system that can remove multiple contaminants at once is necessary. Functionalized biochar (FBC) has been found to be effective in simultaneously removing acetaminophen and ciprofloxacin and other pharmaceutical pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yu Wang, Fengwen Yan, Jie Wu, Zhijun Huang, Liuting Song, Shunda Yuan
Summary: In this study, Cu single atoms are anchored on the external surface of g-C3N4 nanofibers to maximize atom utilization. This catalyst exhibits excellent Fenton-like catalytic activity and good stability due to the full utilization of Cu active sites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)