Article
Chemistry, Physical
Yuan He, Chengwei Sun, Shidong Fang, Muhammad Shaban, Changlun Chen
Summary: A facile NTP treatment was conducted to modify NiCoLDH nanowires, introducing N-doping and oxygen vacancies for improved electrochemical performance. The optimized electrode (P-NiCoNW/CC-150) showed outstanding capacitance performance and excellent cycling stability. An asymmetric supercapacitor device assembled with the electrodes exhibited high energy density.
APPLIED SURFACE SCIENCE
(2024)
Article
Energy & Fuels
Jing Li, Yin Liu, Dan Zhan, Yongjin Zou, Fen Xu, Lixian Sun, Cuili Xiang, Jian Zhang
Summary: Transition metal oxides, such as NiCo2O4 embedded N-doped carbon (NC) composite, have been synthesized for energy storage applications, exhibiting high specific capacitance and specific energy. The superior electrochemical performance of the NiCo2O4@NC electrode is attributed to the microenvironment provided by NC for Faradic reaction of NiCo2O4, and the ultrahigh specific capacitance conferred by NiCo2O4 to the composite.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Wenxin Guo, Dong-Feng Chai, Jinlong Li, Jun Lv, Jinping Wang, Dongxuan Guo, Guozhe Sui, Jin Xing
Summary: This study successfully synthesized NiCo2O4-CoO hollow nanocubes with satisfactory conductivity and electrochemical reversibility as potential electrode materials for supercapacitors by manipulating oxygen vacancies and phosphate ions. The materials exhibited superior specific capacitance, decent charge/discharge behavior, and favorable lifespan.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Jian Xu, Zeshuo Meng, Zeyu Hao, Xucong Sun, Haoshan Nan, Hongxu Liu, Yanan Wang, Wei Shi, Hongwei Tian, Xiaoying Hu
Summary: A high oxygen vacancy alpha-Bi2O3 material was successfully constructed on activated carbon fiber paper, showing improved electrochemical performance, good cycle stability, and high specific capacity. This innovative strategy holds promise for applications in supercapacitors and aqueous batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Jiaqi Zhang, Jin Li
Summary: In this study, ZnO/NiO@NC electrode material was prepared using polyvinylpyrrolidone (PVP) as a structural guide and carbon source, and annealed under an N2 atmosphere to obtain an oxygen-vacancy-rich ZnO/NiO@N-doped carbon shell (ZnO/NiO@NC). The ZnO/NiO@NC electrode exhibited the highest specific capacitance (860.00 F/g), longer charge/discharge time, and lower impedance compared to other materials at a current density of 0.5 A/g. The excellent electrochemical performance can be attributed to the formation of an effective p-n heterostructure, surface oxygen vacancies, and a rich mesoporous structure, as well as the excellent electrical conductivity of the N-doped carbon shell.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Yu Zheng, Hongwei Che, Aifeng Liu, Xiaolin Liu, Tian Tian, Zengcai Guo, Jingbo Mu, Xiaoliang Zhang, Yanming Wang, Zhixiao Zhang
Summary: A vacancy engineering strategy coupled with a nanocomposite method was used to construct oxygen vacancy-rich CoAl-LDH nanosheets coupled with N-doped carbon nanotubes. The rich oxygen vacancy defects in CoAl-LDHs not only enhance the electrical conductivity but also reduce the surface adsorption barrier of electrolyte ions, resulting in fast charge storage kinetics. The obtained N-CNT@Ov-CoAl-LDH nanocomposites show a high specific capacity and excellent capacity retention, demonstrating the potential of this approach for designing improved LDHs-based electrodes.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Electrochemistry
Xingzhao Wang, Yan Zhou, Jiabing Luo, Fengchao Sun, Jun Zhang
Summary: In this study, 3D urchin-like V-doped NiCo2O4 was synthesized as an efficient electrocatalyst for OER. The effects of V dopants on the structural modulation of NiCo2O4 were systematically examined. The results showed that V3+ doping resulted in higher oxygen vacancies and Co2+ content, leading to improved OER catalytic activity and stability.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Lingdan Wang, Xianfa Li, Shanshan Xiong, Hongjun Lin, Yanchao Xu, Yang Jiao, Jianrong Chen
Summary: The study utilized plant polyphenol tannic acid to etch Co-based zeolitic imidazolate framework and prepare porous Co3O4@Co/NC hollow nanoparticles with rich oxygen vacancy defects. The nanomaterial exhibited excellent supercapacitor performance and electrocatalytic activity, showcasing high specific capacity and remarkable rate performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Rencheng Jin, Hailong Yue, Juan Xia, Congying Ren, Shanming Gao
Summary: In this work, a facile procedure was used to design and fabricate oxygen-vacancy abundant NiCo2O4 grown on N-doped carbon nanosheets. The special structure enhanced contact area, maintained structural integrity, and accelerated electron and lithium ion transfer, leading to good cycle stability and long cycle capability. This approach of constructing oxygen-vacancy abundant transition metal oxides with conductive N-doped carbon nanosheets holds promise for improving electrochemical performance.
Article
Chemistry, Physical
Mingchao Zhang, Xin Sui, Xin Zhang, Mang Niu, Cuiqing Li, Haiqin Wan, Zhen-An Qiao, Haijiao Xie, Xingyun Li
Summary: By using a mechano-chemical strategy with Na assisted milling, a multi-defective spinel catalyst D-NiCo2O4 was developed, which exhibited significantly elevated oxygen vacancies, raised active oxygen species, enhanced oxygen mobility, and increased specific surface area. This catalyst showed superb activity for propane catalytic oxidation, outperforming pristine NiCo2O4 and Co3O4 catalyst, making it one of the most outstanding non-noble metal catalysts for propane oxidation. This work set a paradigm for enhancing the VOCs oxidation performance of metal oxide catalyst by multi-defects engineering.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yashi Chen, Danlian Huang, Lei Lei, Sha Chen, Xigui Liu, Min Cheng
Summary: In this study, a facile method was used to synthesize oxygen vacancy-rich doped CDs@graphite felt-600 heterostructure with outstanding electrochemical properties and high energy density. Electron spin resonance provided clear evidence of abundant oxygen vacancies in the heterostructure, explaining the superior capacitive performance. Density functional theory calculations were employed to determine the charge storage mechanism at the interface of CDs@graphite felt-600.
Article
Green & Sustainable Science & Technology
Qinggang Du, Panpan Su, Zezhong Cao, Jie Yang, Cameron Alexander Hurd Price, Jian Liu
Summary: This study successfully prepared N and Fe co-doped CoO nanoparticles with high OER activity at low cost, originating from oxygen vacancies and interface effects, providing new insights into the active sites of Co-based catalysts.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2021)
Article
Chemistry, Physical
Jingxuan Zheng, Xiangfeng Peng, Zhao Wang
Summary: Defect control using cold plasma to enhance electrocatalytic performance of metal oxides has been proven successful. Introducing oxygen vacancies through plasma treatment with different plasma-forming gases can improve charge transfer and electrocatalytic performance. Plasma-induced N-doping in NiCo2O4 shows enhanced electrocatalytic performance for oxygen reduction reaction, with improvements in current density and onset potential.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Analytical
Kan Liu, Wenli Zhang, Man Tang, Zhipeng Wang, Yanqin Yang, Songzhan Li, Hao Long
Summary: In this study, NiCo2O4@NC/Co composite electrodes were prepared through a special synthesis method, showing excellent electrochemical performance and cycling stability in supercapacitors. These electrodes demonstrate great potential for high-performance energy storage systems.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Electrochemistry
Qianqian Pan, Chao Yang, Wentao Qi, Haoming Wei, Rui Ling, Na Jiao, Shuhua Yang, Xiaowei Li, Bingqiang Cao
Summary: The study explores a novel method to regulate the structure of bismuth ferrite through V doping and electrochemical induction, improving its structural stability and oxygen vacancies after charge/discharge cycles. This approach enhances the electrode's rate capability and Li+ diffusion coefficient, providing insights for the design of flexible energy storage micro-devices.
ELECTROCHIMICA ACTA
(2021)
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)