Article
Chemistry, Physical
Caroline Hartwig, Kevin Schweinar, Rachel Nicholls, Sebastian Beeg, Robert Schloegl, Mark Greiner
Summary: The study focuses on comparing the chemical reactivity of AgPd SAAs and Pd in an oxidative atmosphere, revealing that the PdOx formed on AgPd is less thermodynamically stable compared to Pd. This behavior could potentially be utilized in catalytic oxidative reactions such as methane oxidation.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Review
Engineering, Environmental
Collins Antwi Boasiako, Zhe Zhou, Xiangchen Huo, Tao Ye
Summary: Pd-based catalytic hydrogenation for nitrate decontamination has been extensively researched over the past 30 years, leading to new understandings of reaction mechanisms and the development of improved catalysts. However, technical and economic challenges still hinder large-scale implementation. In this review, we summarize reaction pathways, examine synthesis methods for Pd-based catalysts, introduce alternative hydrogen carriers and cost-effective metal catalysts, and emphasize the significance of hybrid catalytic systems for sustainable nitrate treatment. Future research needs are proposed to produce catalysts with industrial relevance.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Tianyun Cui, Yu Ling, Jipeng Meng, Ke Li, Changhai Liang, Chuang Li
Summary: The rational design of high-performance catalysts with resistance to metal leaching is a major challenge in the hydrogenation of nitrile butadiene rubber. This study demonstrates that the Pd-Pt bimetallic alloy nanocatalyst exhibits outstanding hydrogenation and selectivity, thanks to electron transfer and the formation of uniformly dispersed nanoparticles. The incorporation of inactive Pt species enhances metal-support interaction, reducing residual metal content in the rubber. This research provides a simple procedure for designing efficient bimetallic catalysts for the hydrogenation of unsaturated elastomer.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Ya Pan, Liuxin Xu, Wenxue He, Hongmei Li, Wei Chen, Zhihu Sun
Summary: Creating synergistic metal-oxide interfaces is a promising strategy for enhancing the catalytic performance of heterogeneous catalysts. This study presents a comprehensive investigation of the synergistic alloy-oxide interfaces in bimetallic Pt-Co/Al2O3 catalysts for CO oxidation. The Pt1Co0.5/Al2O3 catalyst exhibits the best catalytic performance, with the lowest complete conversion temperature and highest mass specific rate.
Article
Chemistry, Physical
Mohammad Zakaria Sarker, Mohammad Mahbubor Rahman, Hideto Minami, Toyoko Suzuki, Mohammad Abdur Rahman, Alam Khan, Sheikh Manjura Hoque, Hasan Ahmad
Summary: In this study, the catalytic activity and recycle stability of bimetallic Cu-Ni nanocatalyst were significantly improved by using a magnetic Fe3O4-SiO2-NH2 composite support. The prepared catalyst exhibited faster reaction rate and good recycle stability in the reduction of 4-nitrophenol.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Multidisciplinary
Fei Wu, Yueying Wang, Shunxin Fei, Gang Zhu
Summary: In this study, a series of CoxNiy (x + y = 6) bimetallic catalysts were successfully prepared and the promotion effect of Co on the catalytic olefin hydrogenation reactions was investigated. The results showed that bimetallic catalysts generally exhibited superior catalytic performance compared to pure metals, and Co3Ni3 exhibited the highest catalytic activity in the hydrogenation of cyclohexene. The improvement of catalytic activity and stability was attributed to the charge transfer from Co to Ni and the refinement of CoNi grains through alloying. Therefore, tuning the metal/metal atomic ratio of bimetals could potentially enhance the catalytic performance.
Article
Chemistry, Analytical
M. D. Obradovic, U. C. . Lacnjevac, V. V. Radmilovic, A. Gavrilovic-Wohlmuther, J. Kovac, J. R. Rogan, V. R. Radmilovic, S. Lj. Gojkovic
Summary: Two types of Cu-modified Pd catalysts, Cu@Pd/C and Pd-Cu/C, were prepared and studied for the ethanol oxidation reaction (EOR) in alkaline solution. The activity of the catalysts was enhanced by the intimate contact of Pd with Cu atoms, and the optimal atomic Pd:Cu ratio was found to be between 2:1 and 4:1. The Cu@Pd/C catalyst showed the highest activity under potentiodynamic conditions, while Pd-Cu/C was superior during the potentiostatic test. All bimetallic catalysts outperformed Pd/C in terms of mass activity. Pt/C exhibited higher EOR activity compared to Pd-based catalysts at low potentials, but with a significant decline over a 30-min potentiostatic stability test.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Mohammad Jamir Ahemad, Dong-Seog Kim, Thanh Duc Le, Lakshmana Reddy Nagappagari, Geun-Jae Oh, Gi-Seung Shin, Umar Ahmad, Sheikh A. Akbar, Yeon Tae Yu
Summary: In this study, thermally stable ZnO-supported AgPd bimetallic alloy core-shell nanoparticles were synthesized, which showed excellent gas sensing performance, including selectivity, anti-interfering response, repeatability, etc. The improved electronic structure, as a result of lattice mismatch, upshifts in the d-band center, and oxidation resistance behavior of AgPd alloy, enhanced the catalytic properties and gas sensing performances in AgPd alloy@ZnO nanoparticles.
ACS APPLIED NANO MATERIALS
(2022)
Review
Chemistry, Physical
Mohammad Gholinejad, Faezeh Khosravi, Mahmoud Afrasi, Jose M. Sansano, Carmen Najera
Summary: This review discusses the preparation and synthetic applications of bimetallic PdCu nanoparticles, highlighting their superior catalytic activity and selectivity compared to monometallic counterparts. Various preparation methods and support materials allow these nanomaterials to successfully perform a wide range of synthetic reactions and catalytic processes.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Haoyue Sun, Shangjun Chen, Wenjie Yang, Lizhuo Wang, Rui Tang, Xingmo Zhang, Rongkun Zheng, Shengshen Gu, Yijiao Jiang, Weibin Liang, Jun Huang
Summary: The Pd-Au bimetallic nanocatalyst, with photo-active Au nanoparticles, reaction-active Pd nanoparticles, and solar-adsorbing carbon nanospheres, shows significantly enhanced catalytic activities in alcohol oxidation under light irradiation compared to conventional catalysts. Additionally, it can be recycled multiple times without noticeable loss in catalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Yi Tang, Hongkun Li, Kuncheng Cui, Yongde Xia, Guoyuan Yuan, Jian Feng, Wei Xiong
Summary: The chemoselective hydrogenation of cinnamaldehyde to cinnamyl alcohol was accelerated by a Pt nanocatalyst supported on an amorphous coordination polymer. The prepared 1.0wt.%Pt/Co-Asp nanocatalyst exhibited excellent catalytic activity and selectivity, which can be attributed to the synergistic effect between Pt nanoparticles and the amorphous Co-Asp polymer.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
An Pei, Luna Ruan, Jianhua Liao, Huan Fu, Li Zeng, Jun Liu, Min Li, Bing Hui Chen, Lihua Zhu
Summary: Two series of catalysts with tuned nanostructures exhibited much more excellent catalytic performance than catalysts with platinum-transition metal alloy structures and transition metal/carbon for the selective hydrogenation of cinnamaldehyde. The Pt-CuNi/C-reduced catalyst also showed superior stability in cinnamaldehyde hydrogenation.
Article
Energy & Fuels
Kaijie Ni, Yingji Wu, Fatemeh Karimi, Fulya Gulbagca, Abdullah Seyrankaya, Elif Esra Altuner, Yilmaz Kocak, Fatih Sen
Summary: Palladium dopped Copper oxide nanoparticles (CuO@Pd NPs) were synthesized using a green synthesis method and used for hydrogen production experiments. Characterization techniques including UV-vis spectroscopy, SEM, FTIR, and XRD were employed to analyze the properties of the synthesized nanoparticles. The results showed that the CuO@Pd NPs exhibited a metal absorption peak at 422 nm, had a crystal size of approximately 4.426 nm in the cubic phase, and an average particle size of 26.2 nm. The catalytic properties of CuO@Pd NPs were evaluated through sodium borohydride hydrolysis reaction, and the activation parameters such as activation energy, enthalpy change, entropy change, and TOF were calculated. The reusability experiments demonstrated that CuO@Pd NPs maintained 70% catalytic activity after 4 cycles, indicating their potential for catalytic reactions.
Article
Chemistry, Physical
Yangyang Li, Jun Hu, Mingshu Chen, Huilin Wan
Summary: The surface composition and structure of bimetallic catalysts play a crucial role in their catalytic performance. This study demonstrates that the addition of a small amount of Cu to PdxCuy/CeO2 catalysts can enhance the CO oxidation activity and promote the surface dispersion of Pd.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Jiaxin Liu, Chuang Li, Hongyu Niu, Changhai Liang
Summary: Transfer hydrogenation of carbonates using glucose to produce formates and gluconates is an attractive pathway for valorising waste streams. The investigation reveals a cooperative catalytic mechanism and composition-dependent behaviour of PtxPdy/CNTs catalysts. Insights into the mechanism will allow transfer hydrogenation of carbonates at room temperature to be widely utilized.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Metallurgy & Metallurgical Engineering
Yuejun Ouyang, Lin-Xin Li, Zhi-Hui Xie, Lili Tang, Fuhui Wang, Chuan-Jian Zhong
Summary: This study demonstrates a new strategy for constructing pH-responsive nanocontainers and successfully applying them to corrosion protection of magnesium alloy. A smart corrosion protection system was achieved by incorporating the synthesized nanocontainers into a self-assembled nanophase particle coating. Electrochemical tests and visual observations showed that the hybrid coating exhibited the best barrier properties and corrosion resistance.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Multidisciplinary Sciences
Zhi-Peng Wu, Dominic T. Caracciolo, Yazan Maswadeh, Jianguo Wen, Zhijie Kong, Shiyao Shan, Jorge A. Vargas, Shan Yan, Emma Hopkins, Keonwoo Park, Anju Sharma, Yang Ren, Valeri Petkov, Lichang Wang, Chuan-Jian Zhong
Summary: Alloying noble metals with non-noble metals can achieve high catalytic activity and reduce costs. The study shows that realloying plays a crucial role in enhancing the durability of certain multimetallic nanoalloys.
NATURE COMMUNICATIONS
(2021)
Review
Nanoscience & Nanotechnology
Shan Wang, Aolin Lu, Chuan-Jian Zhong
Summary: Hydrogen is a promising substitute for fossil fuels as a clean and renewable energy source. Efficient hydrogen production is a key challenge, with catalysis and electrocatalysis playing a critical role in achieving this goal.
Review
Chemistry, Multidisciplinary
Fei Xiao, Yu-Cheng Wang, Zhi-Peng Wu, Guangyu Chen, Fei Yang, Shangqian Zhu, Kumar Siddharth, Zhijie Kong, Aolin Lu, Jin-Cheng Li, Chuan-Jian Zhong, Zhi-You Zhou, Minhua Shao
Summary: The article summarizes the current development status of PEMFCs and AMFCs, including electrocatalyst design, catalyst layer optimization, and cell performance. It discusses and compares the activity, stability, and fuel cell performance of different types of electrocatalysts for the oxygen reduction and hydrogen oxidation reactions, while also exploring research directions for further development.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Hoda Ilkhani, Chuan-Jian Zhong, Maria Hepel
Summary: This study reports on the design and testing of a nanoparticle-grid based biosensing platform, aiming to aid in the development of new targeted drug nanocarriers. Dual transduction method enables efficient monitoring of drug loading, attaching, and release. The superparamagnetic properties of Fe2Ni@Au NPs facilitate constructing a dense sensor grid with high plasmonic enhancement.
Article
Biophysics
Han-Wen Cheng, Shan Yan, Guojun Shang, Shan Wang, Chuan-Jian Zhong
Summary: Harnessing the interparticle spatial properties of surface assembly of nanoparticles on flexible substrates for highly-sensitive strain sensors is a rapidly emerging area of research, with promising potential for wearable applications. The 3D structural tunability of interparticle spatial properties at both molecular and nanoscale levels in SANs is transformative for designing intriguing strain sensors. The controllability of nanoparticle size, shape, and composition, along with tunability of electrical properties through interparticle spatial properties, highlight the design advancements of SAN-derived strain sensors for wearable biosensors and bioelectronics.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Haval Kareem, Yazan Maswadeh, Zhi-Peng Wu, Asher C. Leff, Han-Wen Cheng, Shiyao Shan, Shan Wang, Richard Robinson, Dominic Caracciolo, Alex Langrock, David M. Mackie, Dat T. Tran, Valeri Petkov, Chuan-Jian Zhong
Summary: This study investigates the details of a ternary nanoalloy under propane oxidation conditions using high-energy synchrotron X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. The results reveal that subtle differences in phase structure and surface activity changes correlate with the Ni-composition-dependent catalytic activity of the nanoalloys, shedding light on the design of oxidation catalysts with enhanced activities.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Shan Yan, Dong K. Dinh, Guojun Shang, Shan Wang, Wei Zhao, Xin Liu, Richard Robinson, Jack P. Lombardi, Ning He, Susan Lu, Mark Poliks, Benjamin S. Hsiao, Ivan Gitsov, Chuan-Jian Zhong
Summary: This study demonstrates the creation of chemically responsive electro-functionality in nonconductive, hydrophobic, and free-contacted textile or fibrous network materials by embedding size-tunable gold nanoparticles and structurally sensitive dendrons as crosslinkers in an electrospun polymeric fibrous substrate. The resulting fibrous structure shows high sensitivity to molecular interactions and exhibits chemiresistive responses to vaporous alcohol molecules with different chain lengths and isomers. This approach utilizes the multifunctional tunability of the nano-filaments in a sensor array format, providing potential applications in breath and sweat sensing as well as environmental monitoring of air quality.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
John-Bruce D. Green, Eamonn Clarke, Marc D. Porter, Christie A. McDermott, Mark T. McDermott, Chuan-Jian Zhong, Adam Johan Bergren
Summary: The roughness of the gold surface can affect the properties of alkanethiolate monolayers as barriers for electron transfer, as shown in the formation of the adlayer and the size and density of structural defects.
Article
Chemistry, Multidisciplinary
Richard Robinson, Virginia Krause, Shan Wang, Shan Yan, Guojun Shang, Justine Gordon, Serena Tycko, Chuan-Jian Zhong
Summary: There is an increasing need to reduce the silver content in silver-based inks or pastes and achieve low-temperature sintering for scalable and low-cost production of printed wearable electronics. This study reports a scalable wet chemical synthesis method for the preparation of bimetallic silver-copper alloy nanoinks with room temperature sintering properties. It is found that the nanoinks can sinter on paper substrates at room temperature.
Article
Chemistry, Analytical
Zaiqi Wang, Guojun Shang, Dong Dinh, Shan Yan, Jin Luo, Aimin Huang, Lefu Yang, Susan Lu, Chuan-Jian Zhong
Summary: This paper describes the design of a low-current, multichannel, handheld electronic device integrated with nanostructured chemiresistor sensor arrays. The device meets the requirements of low excitation current, low power consumption, and stability, making it promising for applications in air quality and biosensor fields.
Article
Materials Science, Multidisciplinary
Yue Liu, Feng Peng, Guang-Ling Yang, Zhi-Hui Xie, Wenxin Dai, Yuejun Ouyang, Liang Wu, Chuan-Jian Zhong
Summary: This study demonstrates the utilization of photoelectrochemical cathodic protection (PECCP) with a metallic nickel interlayer for the indirect corrosion protection of metals with low self-corrosion potential. By coupling a covalent organic framework decorated TiO2 photoanode with nickel coating on magnesium alloy, the PECCP efficiency is enhanced. The composite structure and the enhanced performance are characterized and a corrosion protection mechanism is proposed.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Review
Chemistry, Physical
Han-Wen Cheng, Shan Wang, Guanyu Chen, Zhengwang Liu, Dominic Caracciolo, Merry Madiou, Shiyao Shan, Jincang Zhang, Heyong He, Renchao Che, Chuan-Jian Zhong
Summary: This review emphasizes the latest insights into heterogeneous catalysts under relevant reaction conditions using in situ/operando transmission electron microscopic techniques. By discussing atomic-scale and nanoscale details, it highlights the challenges and opportunities in terms of catalytic properties and design applications.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Lichang Wang, Rotimi M. Ore, Peshala K. Jayamaha, Zhi-Peng Wu, Chuan-Jian Zhong
Summary: Activity, cost, and durability are the three main aspects of catalysis research for the electrochemical oxygen reduction reaction (ORR). This study focuses on the stability of a trimetallic PtPdCu catalyst using density functional theory (DFT) calculations, investigating the dissolution/deposition and diffusion processes and their role in stabilizing the catalyst.
FARADAY DISCUSSIONS
(2023)
Article
Chemistry, Physical
Yue Liu, Huan Yao, Liang Wu, Zhi-Hui Xie, Chuan-Jian Zhong
Summary: Using nanomaterials to design and prepare photoanodes can improve photoelectrochemical and photocathodic protection performances. This study focuses on the correlation between the detailed nanostructure and performance of a ZnO/TiO2 composite for the PCP of nickel-coated magnesium alloy. By manipulating the hydrothermal reaction temperature, a morphologically tunable nano-ZnO semiconductor was obtained, and the optimum photoelectrochemical and PCP capacities were achieved. The enhanced performance was attributed to the morphological regulation of nano-ZnO and the formation of staggered gap heterojunction between ZnO and TiO2.
APPLIED SURFACE SCIENCE
(2023)