Article
Chemistry, Physical
Feifan Wang, Fei Huang, Yingliang Yu, Shuangliu Zhou, Zhenghua Wang, Wu Zhang
Summary: The study demonstrates the efficient and recyclable use of monodisperse CuPd alloy nanoparticles supported on reduced graphene oxide as a catalyst for C(sp(3))-H acyloxylation of 8-methylquinolines. The catalytic system shows low palladium loading, good recycling ability, high atom efficiency, chemo and regioselectivity, as well as substrate compatibility for large-scale synthesis. Preliminary studies were conducted to investigate the heterogeneous catalysis mechanism.
CATALYSIS COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Qing Wei, Ling Wu, Meiwen Zhu, Zhipeng Wang, Zheng-Hong Huang, Ming-Xi Wang
Summary: Constructing high-performance enzyme-free biosensors for glucose detection is crucial for early diagnosis of diabetes. In this study, copper oxide nanoparticles (CuO@Cu2O NPs) were immobilized in porous nitrogen-doped reduced graphene oxide (PNrGO) to create a CuO@Cu2O/PNrGO/GCE hybrid electrode for sensitive glucose detection. The hybrid electrode demonstrated excellent glucose sensing performance, surpassing that of the pristine CuO@Cu2O electrode, due to the synergistic effects between the numerous high activation sites of CuO@Cu2O NPs and the unique properties of PNrGO, such as excellent conductivity and large surface area with accessible pores. The enzyme-free glucose biosensor exhibited a significant glucose sensitivity of 2,906.07 mA mM(-1) cm (-2), an ultralow limit of detection of 0.13 mM, and a wide linear detection range of 3 mu M-6.772 mM. Additionally, the glucose detection method displayed outstanding reproducibility, favorable long-term stability, and excellent selectivity. Importantly, this study provides promising results for the continuous improvement of non-enzyme sensing applications.
Article
Chemistry, Analytical
Huiting Wang, Li Dong, Ling Zhang, Xiangxiang Chen, Qian Zhang, Lixin Xia
Summary: A thermally responsive hybrid poly(NIPAm-b-BVIm[FcCOO])-rGO composed of block co-polymer poly(NIPAm-b-BVImBr), reduced graphene oxide (rGO) and electroactive anions was designed and synthesized to achieve electroactive functionality. The control over the polymeric ionic liquids (PILs) segment allowed for excellent thermally responsive electrocatalysis with reversible 'ON-OFF' effect, showcasing the potential for broad application in the field of intelligent electrochemical sensors and devices.
Article
Nanoscience & Nanotechnology
Chandra Sekhar Yellatur, Raghavendra Padmasale, T. Maiyalagan, Subramanyam Sarma Loka
Summary: In this study, bimetallic Pt-Pd nanoparticles with good homogeneity were fabricated using a solution phase chemical reduction method and supported on rGO. The Pt-Pd/rGO catalyst exhibited higher activity and stability towards ethanol electrooxidation reaction under acidic conditions, indicating its great potential for practical applications.
Article
Chemistry, Physical
Bathinapatla Sravani, Yenugu Veera Manohara Reddy, Jong Pil Park, Manthrapudi Venu, Loka Subramanyam Sarma
Summary: In this study, bimetallic Pt-Fe nanoparticles supported on reduced graphene oxide sheets (RGOs) were prepared via a simple surfactant-free chemical reduction method. The PtFe/RGO catalyst showed higher ORR mass activity and a noticeable positive half-wave potential compared to a commercial Pt/C catalyst.
Article
Chemistry, Physical
Changcun Tang, Longsheng Zhong, Renzhi Xiong, Yanhe Xiao, Baochang Cheng, Shuijin Lei
Summary: In this study, Ni/NiO/RGO composite electrocatalysts were prepared by anchoring regulable composition of Ni/NiO synergistic nanoparticles on reduced graphene oxide (RGO) using graphene oxide (GO) and nickel formate as precursors through in-situ autoredox. The as-prepared catalysts exhibited efficient electrocatalytic oxygen evolution performance in 1.0 M KOH electrolyte, with an overpotential of only 275 mV at a current density of 10 mA cm-2 and a small Tafel slope of 90 mV dec-1, comparable to commercial RuO2 catalyst. The catalytic capacity and structure remained stable after 2000 cyclic voltammetry cycles, and the electrolytic cell assembled with the best-performing sample as anode showed stable performance after 30 hours of continuous work.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Mei Zhang, You Xu, Hugang Zhang, Zhongyao Duan, Tianlun Ren, Ziqiang Wang, Xiaonian Li, Liang Wang, Hongjing Wang
Summary: Pd-based materials show great potential as alternatives to Pt for oxygen reduction reactions (ORR). By modifying the electronic structure and support effect, the performance of Pd-based catalysts in ORR can be significantly improved. The proposed synthetic method provides a feasible approach for the rational design of heteroatoms-doped carbon-metal composites with high performance in ORR and other energy applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Zhimin Song, Lang Qin, Yan Liu, Yongzhi Zhong, Qing Guo, Zhigang Geng, Jie Zeng
Summary: In this study, a CuPd nanoalloy catalyst was developed for ambient electroreduction of NO3- to NH3. By adjusting the atomic ratio of Cu to Pd, the hydrogenation steps during NH3 synthesis can be effectively controlled. The optimized CuPd catalyst showed a high Faradaic efficiency for NH3 and a high yield and partial current density at specific voltage.
Article
Chemistry, Physical
Yellatur Chandra Sekhar, Padmasale Raghavendra, Thandavarayan Maiyalagan, Subramanyam Sarma Loka
Summary: This study investigates the potential of Pt-Ru nanoparticles deposited on a graphene oxide (RGO) and TiO2 composite support for the electrochemical oxidation of ethanol in acidic media. The Pt-Ru/RGO-TiO2 nanocomposite exhibits higher mass-specific activity compared to commercial Pt-Ru/C and Pt/C catalysts. The synergistic effects of RGO-TiO2 composite support and Pt-Ru ensemble contribute to the observed higher activity and stability. Furthermore, the optimization of RGO-TiO2 composite support offers opportunities for depositing other types of metallic nanoparticles for fuel cell electrocatalysis applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Md Humayun Kabir, Erik Marquez, Grace Djokoto, Maurice Parker, Talia Weinstein, William Ghann, Jamal Uddin, Meser M. Ali, Maksudul M. Alam, Max Thompson, Altug S. Poyraz, Huggins Z. Msimanga, Mohammed M. Rahman, Michael Rulison, John Cramer
Summary: This report describes and characterizes an enzymatic biofuel cell that is simple, mediator-free, and glucose-powered. It utilizes biocompatible materials and features a two-dimensional mesoporous thermally reduced graphene oxide (rGO) host electrode. The use of biocompatible, low-cost filter paper (FP) as a support material for the host electrode is also explored. The cell shows high power density and stable power output under ambient conditions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Gabriele Capilli, Yiwen Chen, Thomas Szkopek, Marta Cerruti
Summary: This study developed a 3D macroporous reduced graphene oxide scaffold with cobalt oxide particles selectively deposited, which allows water molecules to access catalytic particles but prevents the diffusion of ions such as chlorine. The electrodes generated oxygen from simulated seawater with high pH and exhibited low chlorine generation.
Article
Chemistry, Physical
Wonsang Jung, Jaewoo Jeong, Younghyun Chae, Woong Hee Lee, Young-Jin Ko, Keun Hwa Chae, Hyung-suk Oh, Ung Lee, Dong Ki Lee, Byoung Koun Min, Hyeyoung Shin, Yun Jeong Hwang, Da Hye Won
Summary: The use of bimetallic Cu-Pd-O-x alloy electrocatalysts can promote selective NH3 production from the electrochemical nitrate reduction reaction (eNO(3)RR), especially at low overpotential. The synergistic effect of Cu and Pd increases the NH3 yield and enhances its selectivity and production rate. This study sheds light on the mechanism of the catalytic eNO(3)RR and provides insights for the design of more advanced eNO(3)RR electrocatalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Nanoscience & Nanotechnology
Dang Du Nguyen, Yonas Tsegaye Megra, TaeGyeong Lim, Ji Won Suk
Summary: Free-standing graphene-based paper-like materials are of interest due to their tunable properties and unique structures. Understanding the interactions between graphene sheets is crucial for their applications. In this study, we characterize the interlayer cohesion energies in graphene papers through mechanical separation and chemical reduction. The interlayer cohesion energy is correlated with the oxygen content, interlayer spacing, and electrical conductivity of the graphene papers, providing insight into the potential tunability of interlayer interactions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Weiwei Xiao, Na Ni, Xiaohui Fan, Xiaofeng Zhao, Yingzheng Liu, Ping Xiao
Summary: This study reported an ambient flash sintering behavior of reduced graphene oxide/3 mol% yttria-stabilized ZrO2 composites, achieving dense and conductive composites at room temperature within a short time. The use of reduced graphene oxide as both a composite component and a conductive additive eliminates the need for vacuum and furnace, promising simplified fabrication equipment for energy and cost savings.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
L. Torrisi, M. Cutroneo, A. Torrisi, L. Silipigni
Summary: Measurements were conducted to determine nitrogen diffusion coefficients in graphene oxide (GO) and reduced graphene oxide (rGO) at different temperatures, showing significantly higher diffusion coefficients in rGO due to removal of water and functional oxygen groups leading to the opening of nanochannels. Thermal activation energy of nitrogen diffusion was evaluated for both materials.
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)