Article
Multidisciplinary Sciences
Liang Chen, Wenxing Wang, Jia Tian, Fanxing Bu, Tiancong Zhao, Minchao Liu, Runfeng Lin, Fan Zhang, Myongsoo Lee, Dongyuan Zhao, Xiaomin Li
Summary: A universal strategy for the synthesis of monodisperse core-shell structured COF nanocomposites remains challenging. The authors have developed a versatile dual-ligand assistant strategy for interfacial growth of COFs on functional nanoparticles with various properties for potential applications in PDT and chemotherapeutic drug delivery. The core@shell structured nanocomposites exhibit controllable shell-thickness and uniformity without agglomeration, making them promising for NIR-activated PDT with deep tissue penetration.
NATURE COMMUNICATIONS
(2021)
Article
Energy & Fuels
Subhasis Pati, Sonali Das, Nikita Dewangan, Ashok Jangam, Sibudjing Kawi
Summary: In this study, a catalytic membrane reactor combining an ultra-thin Pd-Ag alloy membrane with a coke-resistant Ni-SiO2@CeO2 core-shell catalyst was developed for high yield hydrogen production from dry reforming of methane (DRM). The performance of the membrane in the presence of CO, CO2, and CH4 was evaluated, showing little reduction in H-2 flux. The use of the membrane reactor resulted in improved methane conversion and suppression of the reverse water gas shift reaction.
Article
Chemistry, Multidisciplinary
Heike Lisa Kerstin Stephanie Stolle, Andrea Csaki, Jan Dellith, Wolfgang Fritzsche
Summary: In this study, two methods for modifying gold nanospheres by depositing palladium were investigated, including reduction with ascorbic acid and light-induced metal deposition utilizing the plasmonic effect. Both methods were found effective in depositing Pd on the surface of gold nanoparticles, with the light-assisted method resulting in thinner Pd layers compared to the reduction method with ascorbic acid. The plasmonic effect and hot electron play significant roles in Pd acetate reduction on the gold particle surface.
Article
Environmental Sciences
Minghui Li, Hang Liu, Chang Liu, Yan Ding, Caixia Fang, Rui Wan, Hongjie Zhu, Yaning Yang
Summary: In this study, Pd sub-nanolayer on Au core catalysts supported on Al2O3 (sub-Pd-Au/Al2O3) were designed for highly effective catalytic hydrogenation reduction of oxyanions. The optimized catalyst exhibited excellent catalytic activity for the reduction of Cr(VI), Br(V) and Se(IV) oxyanions.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Physical
Trenton Otto, Xiaoyu Zhou, Stacey I. Zones, Enrique Iglesia
Summary: A synthetic procedure was developed for encapsulating Au nanoparticles within titanium silicalite-1 (TS-1), allowing for the assembly of TS-1 frameworks around Au coordination complexes. Changes to established crystallization procedures for TS-1 led to successful encapsulation of small Au nanoparticles, which showed catalytic activity for propene epoxidation.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Analytical
Xiaoning Meng, Mingshu Bi, Qiuping Xiao, Wei Gao
Summary: In this study, Au@Pd/SnO2 nanocomposites were successfully synthesized and used for H2 sensing for the first time. The results showed that Au@Pd/SnO2 exhibited superior H2 sensitivity compared to Pd/SnO2, and Au@Pd-2/SnO2 showed excellent sensing properties with a response of 16.75 towards 100 ppm H2 at 100 C and a response/recovery time of 1/5 s. The enhanced sensing characteristics can be attributed to the synergistic effect of the Au@Pd bimetallic catalyst.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Nanoscience & Nanotechnology
Abdelrahman S. Khder, Hatem M. Altass, Rabab S. Jassas, Munirah M. Al-Rooqi, Menna A. Khder, Moataz Morad, Ahmed Gebreil, Ziad Moussa, Saleh A. Ahmed
Summary: In this study, five catalysts containing 1 wt % monometallic gold (Au), palladium (Pd), and bimetallic gold-palladium (Au-Pd) with different ratios supported by MgO were prepared using a modified impregnation approach. The structure of each catalyst was thoroughly examined, and their catalytic activity was evaluated using carbon monoxide oxidation. The results showed that loading Au and/or Pd nanoparticles (NPs) had no significant effects on the crystal size, surface area, or pore radius of MgO. The formation of Au/Pd alloy was observed at a Au/Pd ratio of 1:1, and Au-rich catalysts demonstrated superior catalytic performance toward CO oxidation compared to Pd-rich catalysts. The higher activity was attributed to the small particles of Au0 and the oxidized/partially oxidized species (Au+, Pd2+, and Pd delta+), which provided active sites and active oxygen necessary for CO2 formation.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Juan Chen, Lu-Qi Bai, Yi-Fei Dai, Li-Cheng Deng, Yu Wang, Tao Zhang, Kai-Jie Chen
Summary: Encapsulating the mononuclear iron complex [(TPA)FeII-2L]2+ in the metal-organic framework UiO-66 via a two-step ship-in-a-bottle strategy provides ideal space confinement, protecting it from dimerization and significantly increasing its stability compared to the un-confined state.
DALTON TRANSACTIONS
(2023)
Article
Engineering, Environmental
Li Zhang, Haitao Yu, Shengguang Gao, Huaqing Wang, Zhiwei He, Kun Huang
Summary: Pd nanoparticles supported by yolk-shell magnetic porous organic nanospheres exhibit high catalytic performance and excellent magnetic recyclability, allowing for rapid separation and recovery in various reactions using external magnetic fields.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Asbjorn Slagtern Fjellvag, David Waller, Thomas By, Anja Olafsen Sjastad
Summary: We have studied the grain reconstruction of Pd/Au alloys as Pt-catchment materials in lab-scale experiments and in an industrial ammonia oxidation plant. It is found that alloying Pd with Au reduces the grain reconstruction, and Pd/Au (50/50 at. %) alloy shows a low degree of restructuring in all experiments. However, a reduced Pt-catchment is observed in the industrial experiment. The mechanism for grain reconstruction and the role of the Kirkendall effect and internal porosity are discussed.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Taha Elgayyar, Josefine Schnee, Alain Tuel, Laurence Burel, Francoise Bosselet, Yves Schuurman, Frederic C. Meunier, Laurent Delannoy, Cyril Thomas
Summary: Direct decomposition of NOx at moderate temperatures is a challenge due to poisoning of noble metal surfaces by oxygen, but modifying Pd with Au allows for a highly stable catalyst at 450 degrees C without oxygen. Pd-Au alloy domains exhibit a wide range of compositions, with Pd content decreasing as the oxidizing nature of the feed increases.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yu -Ching Weng, Chieh-Lin Chiang
Summary: This study utilizes SECM to screen ternary metal catalyst arrays for formic acid oxidation. Pd-Co-Au and Pd-Co-Cu ternary metal catalyst arrays are prepared and reduced on a glassy carbon substrate. The optimal ratio of Pd2Co6Au2 and Pd2Co6Cu2 catalysts in the respective arrays is determined for efficient formic acid oxidation. The surface morphology of these catalysts is complex and diverse, mainly consisting of heterostructures of different metal oxides. These catalysts exhibit higher oxidation current and lower onset potential compared to a pure Pd catalyst. Electrochemical impedance spectroscopy analysis reveals their pseudo inductive behavior and the Pd2Co6Cu2 catalyst shows the lowest charge transfer resistance and removes adsorbates at the lowest overpotential.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Applied
Xiang Ji, Dongdong Chen, Lin Peng, Francesco Frison, Chiara Dalla Valle, Cristina Tubaro, Marco Zecca, Paolo Centomo, Daiqi Ye, Peirong Chen
Summary: The study utilized oxygen- and nitrogen-functionalized mesoporous carbons as supports for Pd nanoparticles, leading to high H2O2 productivity with suitable N groups enhancing Pd2+ fraction for achieving high selectivity in direct H2O2 synthesis.
Article
Chemistry, Multidisciplinary
Nan Wang, Wei Zhao, Miaolei Zhang, Pengfei Cao, Shengjun Sun, Houyi Ma, Meng Lin
Summary: Bismuth was introduced as an intermediate in the production of Au-X bimetallic nanoalloys through the galvanic replacement reaction. The resulting Au-X nanoalloys exhibited good activity for electrocatalytic reactions in alkaline media, providing an option for the formation of multimetal nanoalloys with similar electrochemical potentials and compositions.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Applied
Piaoping Yang, Lulu Li, Zhi-Jian Zhao, Jinlong Gong
Summary: This study investigates the crucial role of model and coverage effect on understanding the nature of active sites for CO2 reduction over Au and Pd NPs using DFT calculations. Different CO selectivity results on terrace and edge sites on Au and Pd NPs reveal the computational model effect on clarifying active site properties. The coverage effect is more significant for Pd catalysts, indicating the necessity of reasonable models in DFT calculations.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Shaoxin Song, Yang Liu, Xuejuan Liu, Jianping Ge, Dengteng Ge, Lili Yang
Summary: This study demonstrates a strategy to modulate the brightness of electrically-responsive photonic pixels through surface charge treatment of electrodes, leading to an increase in reflection intensity. Additionally, wide angle-independent photonic colors are achieved via electrophoretic movements of charged particles. This research provides insights for the design of electrically-responsive photonic devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Jieqiu Wang, Fei Pang, Qianqian Fu, Jianping Ge
Summary: Photonic crystal patterns with angle-dependent colors are a promising anti-counterfeiting material. Delicate PC patterns can be fabricated by silkscreen printing of photo-curable SiO2/monomer PC inks on the substrate, followed by UV irradiation to fix the PC structures. The resulting PC marks show noticeable angle effects, uniform color distribution, and good mechanical and chemical stabilities. Different silk screen stencils are investigated to achieve the best color intensity and printing resolution. As a demonstration of their anti-counterfeiting functions, the PC patterns exhibit color changes and reversible switches under different angles.
SCIENCE CHINA-MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xiaodong Lu, Xiaohui Wang, Xinyang Li, Liqin Chai, Guojin Liu, Jianping Ge, Jianzhong Shao
Summary: A novel approach to constructing patterned photonic crystals via screen printing was designed and achieved. Patterned PCs with high-saturation iridescent effect were prepared by printing a hydrophilic polymer paste on a hydrophobic fabric and scraping liquid photonic crystals on the fabric. Complex multistructural color patterns were achieved by adjusting the nanosphere size and using multistep printing and scraping.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Li-Han Luo, Yi-Hao Tong, Rui Jia, Yu-Zhe Wu, Qian Shen, Rui Han, Sun-Jie Xu, Hu Yang, Zhen-Liang Xu
Summary: This study proposes a new approach by using CCC post-treatment method to upgrade RO membranes and successfully establish a stable mixed matrix membrane structure, which enables efficient separation of inorganic salts from organic solvents. The treated TFN MMM exhibits stable performance and competitive capacity in organic solvent RO.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Wei Jin, Yu-Fei Lin, Zhen-Liang Xu, Ping-Ping Li, Jia-Yue Dai, Yi-Hao Tong, Xin Zhang
Summary: A new zwitterionic ultrafiltration membrane, synthesized using a zwitterionic polyethersulfone (PES), showed improved anti-fouling and antibacterial properties. The membrane exhibited higher water flux and protein rejection, and maintained excellent flux recovery and antibacterial effect.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Engineering, Chemical
Yin-Xin Fang, Yu-Fei Lin, Zhen-Liang Xu, Jia-Wei Mo, Ping-Ping Li
Summary: Covalent organic frameworks (COFs) membranes with highly ordered porous architecture have been widely used in wastewater treatment. However, the use of C2 monomers is limited and expensive. In this study, a novel clover-like structure COFs membrane was successfully fabricated using Meta-position monomer and interfacial polymerization method. The optimized membrane showed excellent water permeance and high rejection rates for Congo red and NaCl. This work provides a new approach for designing COFs membranes and improving water molecule transport paths.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Dengpeng Lan, Wenting Sheng, Qianqian Fu, Jianping Ge
Summary: A photonic crystal supported blue TiO2 photocatalyst (BTPC) was prepared, showing 5-6 times higher activity and improved CH4 selectivity compared to BT catalysts on quartz plate. The enhanced light absorption and increased surface electron density contributed to the superior catalytic performance, which were influenced by the reflection intensity and wavelength of PC support.
Article
Chemistry, Multidisciplinary
Wenyuan Yu, Yanxuan Zhao, Wenting Sheng, Jianping Ge
Summary: Electrically responsive photonic crystals (ERPC) are promising materials for various applications, but high working voltage limits their use due to poor performance. A method utilizing nanoparticle modification of electrodes is proposed to enhance ERPC performance, lowering working voltage and improving color saturation, stability, and reversibility. Additionally, this method allows for the fabrication of electrically triggered tags with a pattern showing/hiding effect for anti-counterfeiting purposes.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xin Zhang, Tian Yin, Jianping Ge
Summary: In this study, a multilayer thermochromic film was developed for thermal printing, which exhibited fast thermal response and stable performance. It enabled high-resolution and grayscale printing, and improved the user experience.
ADVANCED MATERIALS
(2023)
Article
Engineering, Chemical
Xiao-Gang Jin, Meng-Meng Tang, Xin Tang, Miao Yu, Tian-Xiang Ren, Xiao-Hua Ma, Zhen-Liang Xu
Summary: High-performance nanofiltration (NF) membranes were successfully prepared using hydrogen bonding and host-guest interactions. These membranes have an ultra-thin and highly cross-linked polyamide selective layer, which exhibits surprising permeability and selectivity. This approach provides an elegant and efficient method for improving NF membrane performance without major modifications to existing manufacturing processes.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Chemical
Ping-Ping Li, Zhen-Liang Xu, Yin-Xin Fang, Dibakar Pandaya, Ling-Lin Gao, Rui Ding
Summary: Poly (m-phenyleneisophthalamide) (PMIA) is modified by introducing amino-epoxide crosslinkers, and the crosslinked PMIA (CPMIA) thin-film is successfully prepared via casting coupled solvent evaporation. The TFC-CPE membrane with CPMIA active layer is generated for the first time via the thin-film liftoff (T-FLO) technique. It exhibits excellent dye desalination performance, thermal resistance, anti-fouling capability, and long-term stability, showing great potential for in-situ dye wastewater treatment.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Pingping Li, Zhenliang Xu, Dibakar Pandaya, Yinxin Fang, Linglin Gao, Rui Ding, Kaiqi Yu
Summary: For the first time, the ion permeance of a thin film made of Poly (m-phenylene isophthalamide) (PMIA) was explored and a novel TFC membrane with PMIA active layer was successfully fabricated. The mechanism of using PMIA as the active layer was illustrated by SEM, FTIR, and XPS. The resulting TFC-P10 membrane exhibited excellent dye filtration performance and stability, providing guidance for in-situ dye effluent treatment and novel TFC membrane fabrication.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Guangyang Bao, Wenyuan Yu, Qianqian Fu, Jianping Ge
Summary: This study reports a method of fabricating an electrically responsive photonic crystal (ERPC) in weak polar media. The ERPC shows good performance due to less screening of Coulombic interaction. By using aniline as a weak polar solvent, the ERPC is fabricated without any charge-controlling agent. The resulting SiO2/ANI ERPC exhibits a broad reflection wavelength tuning range (230 nm) and a low working potential (1.4 V), leading to improved stability and reversibility of the electrical tuning.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Engineering, Chemical
Tian-Xiang Ren, Ming-Xiao Zhang, Zhen-Liang Xu, Ping-Ping Li, Dibakar Pandaya, Xiao-Gang Jin, Xiao-Hua Ma
Summary: The effects of various solvents on the performance of CTA FO membranes were systematically investigated in this study, and a new method for designing and developing high-performance FO membranes was proposed.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yi-Hao Tong, Yu-Zhe Wu, Zhen-Liang Xu, Li-Han Luo, Rui Jia, Sun-Jie Xu
Summary: This study developed a loose nanofiltration membrane with outstanding performance for effective dye sieving and dye/salt separation, which could recycle valuable resources during textile wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
