Article
Chemistry, Physical
Peng Long, Mengmeng Qin, Baocai Zhang, Qijing Liu, Fulai Zhao, Zijie Wu, Zhengyang Ni, Huitao Yu, Feng Li, Hao Song, Yiyu Feng, Wei Feng
Summary: By synthesizing CoFe-layered double hydroxides (LDH) on partially-reduced graphene oxide (p-rGO) via electrostatic interaction, the cathodic reduction efficiency of microbial fuel cells (MFCs) can be improved, and the power generation capacity can be increased.
Article
Materials Science, Multidisciplinary
Agung Nugroho, Eduardus Budi Nursanto, Sylvia Ayu Pradanawati, Haryo Satriya Oktaviano, Hanida Nilasary, Hartoto Nursukatmo
Summary: Graphitic carbon materials are synthesized by mixing petroleum coke with Fe-based catalysts and annealing at 1300 degrees C under N-2 atmosphere. Iron or iron oxide catalyst leads to similar graphitic structure formation during heat treatment, with iron oxide catalyst resulting in ordered graphitic structure. Iron-based catalyst decreases turbostratic peak and leads to higher ordered graphite peak. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) show similar morphology structure of graphite powder synthesized using iron or iron oxide. Full cell testing using NMC-622 cathode demonstrates good electrochemical properties of the synthesized sample, comparable to commercial graphite.
Article
Environmental Sciences
Ye Xiao, Vicente Montes, Josephine M. Hill
Summary: A new activation method was developed in this study to retain sulphur in high sulphur content petcoke and prepare transition metal sulphide catalysts simultaneously. The method effectively addressed the issue of handling carbonaceous waste containing sulphur and converting it into useful metal sulphide catalysts.
Article
Energy & Fuels
Hao Song, Haiping Yang, Chuang Zhao, Junhao Hu, Jun Zou, Peng Wu, Siqin Li, Hanping Chen
Summary: This study investigates the co-gasification and catalytic co-gasification of petroleum coke and coal at high temperatures. It compares the structural characteristics of high temperature petroleum coke and bituminous coal pyrolysis char, explores the effects of blending ratio on gasification reactivity and synergy, and studies the impact of catalyst on co-gasification. The results show that the gasification reactivity of the blends increases with the coal blending ratio, and a synergistic effect is observed as the co-gasification proceeds with temperature.
Article
Energy & Fuels
Xianyu Liu, Jiandong Ma, Qi Hong, Shiwei Ma, Huijun Ge, Tao Song
Summary: The study found that potassium can be used as a catalyst to accelerate coke conversion in the chemical looping gasification process, with good catalytic effects. Different potassium introduction modes have different effects on syngas yields and distribution, carbon conversion and potassium evolution. Using potassium to modify coke can achieve higher average carbon conversion rates.
Article
Energy & Fuels
Tongrui Hu, Wenfeng Zhang, Zijie Xia, Yunfeng Zhu, Yana Liu, Jiguang Zhang, Liquan Li
Summary: In this study, a novel α-MnO2/Co3O4 bifunctional composite catalyst was successfully prepared and applied in a rechargeable aluminum-air battery. The α-MnO2/Co3O4 catalyst exhibited better ORR/OER catalytic activity compared to α-MnO2 and Co3O4. The aluminum-air battery using the α-MnO2/Co3O4 catalyst showed excellent cycling performances.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Haiping Yang, Hao Song, Chuang Zhao, Junhao Hu, Siqin Li, Hanping Chen
Summary: This study investigated the high temperature catalytic gasification of petroleum coke pyrolysis char. Different catalysts were found to have varying effects on the gasification process, with NaAlO2 showing the highest catalytic performance. The addition of NaAlO2 significantly improved the gasification reactivity of petroleum coke pyrolysis char.
Review
Chemistry, Multidisciplinary
Eelco T. C. Vogt, Donglong Fu, Bert M. Weckhuysen
Summary: Hydrocarbon conversion catalysts can suffer from deactivation due to deposition or formation of carbon deposits, which is thermodynamically favored above 350 degrees C. Different mechanisms, such as carbenium-ion based mechanism, metal-induced soft coke formation, radical-mediated mechanism, and fast-growing carbon filament formation, contribute to the deactivation. The deactivation is caused by the blocking of pores and active sites by carbon deposits. Proper catalyst and process design can mitigate the effects of deactivation, and new analytical tools allow for direct observation of coke-type species distribution as a function of catalyst structure and lifetime.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Wu Hao, Sang-Hun Lee, Shaik Gouse Peera
Summary: This study presents a novel strategy for synthesizing nano-sized MnO nanoparticles and evaluates their physicochemical and electrochemical properties. The resulting MnO/N-doped carbon catalysts exhibit excellent crystallinity, adequate surface area and porosity, enhanced ORR activity, and excellent stability.
Article
Thermodynamics
Peng Lv, Jiaofei Wang, Yonghui Bai, Xudong Song, Weiguang Su, Guangsuo Yu, Yuan Ma
Summary: This study investigates the influence of iron-based waste catalyst (IWC) on the gasification reaction of petroleum coke (PC) with CO2. The results show that IWC acts as an efficient catalyst by reducing the activation energy of the gasification reaction, thus increasing the reaction rate.
THERMOCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Alexey Kameshkov, Viacheslav A. Rudko, Renat R. Gabdulkhakov, Maxim Yu Nazarenko, Maxim K. Starkov, Vladimir G. Povarov, Igor N. Pyagay
Summary: This study investigates the potential of producing petroleum coking additives from heavy petroleum residues, with experiments showing that the additives could replace coking coals in the production of metallurgical coke, meeting the required quality indicators.
Article
Chemistry, Multidisciplinary
Huimin Zhou, Liang Guo, Runhao Zhang, Lei Xie, Yang Qiu, Guoliang Zhang, Zhanhu Guo, Biao Kong, Feng Dang
Summary: A subcrystalline scheelite CoMoO4 catalyst with Mo-O octahedron is utilized in lithium-air batteries (LABs), achieving high performance with a specific capacity of 12,000 mAh g(-1) and ultralong cycle stability over 270 cycles in ambient air. The CoMoO4 catalyst demonstrates an ultrastable crystal structure and surface conditions, providing a highly stable catalytic surface for the oxygen evolution and oxygen reduction reactions. The induced octahedron enhances the adsorption energies to O-2 and LiO2, accelerating the catalytic reactions in air. This study represents a conceptual breakthrough in finding highly active cathode catalysts for LABs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Tianxu Shen, Jingcun Yan, Xiao Zhu, Lulu Wang, Laihong Shen
Summary: MFB-TGA is a micro fluidized bed thermogravimetric analysis technique with high accuracy and stability, which has the potential for extensive application in evaluating catalytic combustion and deducing oxidation mechanisms, oxygen migration pathways, and combustion kinetics. The measurement stability of MFB-TGA is influenced by various factors such as temperature distribution and gas disturbance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Agnieszka Korus, Adam Klimanek, Slawomir Sladek, Andrzej Szlek, Airy Tilland, Stephane Bertholin, Nils Erland L. Haugen
Summary: The process of petcoke conversion in chemical looping combustion technology requires detailed knowledge about the reactions with O-2, CO2, and H2O. Experimental results showed that the reaction with CO2 was slow, and kinetic parameters of petcoke gasification were determined by applying different models to the data obtained from a custom test rig.
Article
Thermodynamics
Tianhong Zhou, Lichao Ge, Qian Li, Long Yang, Longhui Mai, Jing Huang, Yang Wang, Chang Xu
Summary: Isothermal pyrolysis experiments were conducted to optimize the utilization of petroleum coke. Combustion characteristics and gasification properties of petroleum coke and its semi-coke were investigated. Results showed that gas production increased with higher pyrolysis temperatures. The graphitization degree of semi-coke showed a decreasing and then increasing trend, reaching its lowest at 650 degrees C. Combustion performance improved with increased oxygen concentration, while gasification rate was higher for semi-coke than petroleum coke.
Review
Environmental Sciences
Muhammad Irfan, Xianhua Liu, Khalid Hussain, Suraya Mushtaq, Jonnathan Cabrera, Pingping Zhang
Summary: This study conducted a quantitative and qualitative bibliometric analysis on cadmium pollution research, highlighting the contributions of China, the USA, and India. The main sources of cadmium are mining, industry, wastewater, sedimentation, and agricultural activities. In developing countries, people are mainly exposed to cadmium through air, freshwater, and food.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Yunxue Li, Sitong Liu, Zhiyong Ji, Jun Sun, Xianhua Liu
Summary: This study systematically investigated the sorption behavior of two typical microplastics (PVC and PE) to Zn(II) and their combined toxic effects on Chlorella vulgaris. The results showed that different microplastics exhibited different adsorption capacities for Zn(II) and the combined exposure to Zn(II) and microplastics had distinct effects on cell growth and oxidative stress.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Xiao-Chen Chen, Cong-Cong Yao, Ao Wang, Zeng-Di Zhang, Long -Zhao Chen, Jian-Yu Zhang, Xian-Hua Liu, Hong-Bo Li
Summary: The study assessed the risks of two mobilising agents, Na2S2O4-EDTA and C6H8O7, in remediating As-contaminated soils. Both agents increased ecological risk but had opposite effects on health risk. Na2S2O4-EDTA increased As relative bioavailability and bioaccessibility while C6H8O7 reduced them and promoted As(III) methylation. This study provides important insights for mobilising agent selection and managing remediation sites.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Yubo Zhao, Yang Song, Kexun Li, Feiyong Chen, Bing Liu, Lun Meng
Summary: This study investigates the relationship between crystal microstructures of intercalation electrodes and desalination performance in the presence of naturally occurring organic matters (NOM), with a focus on the impact of humic acid (HA). The results show that HA has contrasting effects on the ion storage performances of tunnel and layered sodium manganese oxides (T-NMO and L-NMO) electrodes. HA causes capacity fading in T-NMO electrodes due to crystal lattice contraction, hinderance of ions diffusion, and electrode dissolution. On the other hand, HA insertion enlarges the interlayer distance and diminishes electrode dissolution in L-NMO electrodes, resulting in an improvement of ion storage capacity. These findings provide important guidance for the design and deployment of CDI in real-world applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Jingyu Li, Yexin Dai, Jinran Cui, Halayit Abrha, Ning Kang, Xianhua Liu
Summary: Overuse of antibiotics is a global threat to human health and the environment. This study synthesized a dual-luminescent material FS@UIO66 for the efficient detection and control of antibiotic pollution. The material demonstrated superior sensitivity, high selectivity, and excellent recyclability in sensing tetracycline (TET) and levofloxacin (LEV), with detection limits of 0.2444 μM and 0.2808 μM, respectively. Furthermore, the composites successfully detected TET and LEV in real water samples, indicating its potential as a great sensing platform for antibiotic detection.
Article
Chemistry, Physical
Peng Zhang, Mingming He, Fukuan Li, Dezhi Fang, Kexun Li, Hao Wang
Summary: Excessive phosphate in water bodies is a major concern, and electro-assisted adsorption technology shows great potential for wastewater treatment. In this study, bimetallic Ti-La active centers were created on hierarchically porous carbon electrode materials resulting in TLPC2, which exhibited exceptional phosphate removal capability. The coupling of electric field, ligand exchange, oxygen vacancy sites consumption, and electrostatic attraction contribute to the superior performance of TLPC2. This study provides insight into phosphate electrosorption and promotes the development of highly efficient electrode materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Analytical
Xu Zhang, Yihao Zhang, Wei Guo, Shipu Jiao, Xianhua Liu
Summary: Electrochemical microfluidic technology has been extensively studied in various fields, but there is a lack of bibliometric analysis in this area. This study conducted a bibliometric analysis of 457 publications related to electrochemical microfluidic technology and identified hot topics, major contributors, and applications in biomedicine, food safety, and environmental monitoring. Future challenges and research strategies were also discussed. This bibliometric review provides valuable insights for researchers in the field.
Article
Environmental Sciences
Jing Song, Xiuping Liu, Ningdong Xie, Jiaqian Li, Xianhua Liu, Biswarup Sen, Guangyi Wang
Summary: This study investigated the abundance, diversity, and community structure of heterotrophic protists known as Labyrinthulomycetes protists (LP) in the coastal zone of Hainan Island in the South China Sea. The results showed variations in LP abundance by location and depth, with the highest levels found in the middle layer offshore and the lowest in the bottom layer offshore. The LP community was dominated by the genus Aplanochytrium, and four different ecotypes were identified. These findings contribute to our understanding of LP in coastal ecosystems and raise questions about their potential ecological differentiation.
Article
Energy & Fuels
Yang Li, Shipu Jiao, Yexin Dai, Jiao Wang, Jingyu Li, Ning Kang, Muhammad Irfan, Xianhua Liu
Summary: Evaporation driven power generation technology attracts global interest, but its lower performance, discontinuity of power generation, and limited function hinder its wide application. We constructed a spontaneous sustainable multifunctional transpiration generator to achieve continuous power generation and simultaneous production of freshwater and salt from seawater evaporation. The device showed promising potential with high performance and multi-functions, producing electricity, freshwater, and salt simultaneously.
Article
Engineering, Environmental
Chen Li, Zheng Fang, Benqiang Cen, Peng Zhang, Fukuan Li, Dezhi Fang, Mingming He, Changhua Zhang, Jia Liu, Xiaoping Mo, Kexun Li
Summary: This study demonstrates the efficient removal of nitrate from water using a novel stirring capacitive deionization (CDI) system with nitrogen-doped carbon spheres (NCS) as the electrode material. The NCS-900 electrodes exhibited an interconnected framework and controllable mesoporous structure, which enhanced the transfer and diffusion of nitrate ions and resulted in excellent specific capacitive properties. The CDI system achieved an ultrahigh nitrate electrosorption capacity and rapid removal rate, surpassing previously reported nitrate capture electrodes. Furthermore, the stability and selectivity of nitrate electrosorption were well maintained in comprehensive conditions and actual sewage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Shipu Jiao, Yihao Zhang, Yang Li, Bushra Maryam, Shuo Xu, Wanxin Liu, Miao Liu, Jiaxuan Li, Xu Zhang, Xianhua Liu
Summary: Collecting energy from natural water evaporation can alleviate pollution and energy problems globally. In this study, a hydrovoltaic generator was developed using a nano-Al2O3 coated polyethylene terephthalate film, which achieved an open circuit voltage of 1.7 V under ambient conditions. By connecting multiple devices, the energy output can be further improved. The electrical performance is influenced by environmental conditions, solution properties, and film morphology.
Article
Chemistry, Physical
Shipu Jiao, Ning Kang, Yihao Zhang, Yang Li, Bushra Maryam, Xu Zhang, Pingping Zhang, Xianhua Liu
Summary: The combination of POMs and MOFs in the synthesis of T-POMs@ZIF-67 was found to enhance the power density of the catalyst anode, suggesting significant potential for use in the fuel cell industry.
Article
Chemistry, Physical
Xu Dong, Yuankai Shao, Xiaoning Ren, Zhenguo Li, Kaixiang Li, Yindong Tong, Xianhua Liu, Yiren Lu
Summary: By constructing atomic-scale crystal/amorphous WO3/Bi2WO6 nanoparticles, photochromic films and colorimetric cards are developed to visually sense the intensity of ultraviolet (UV) radiation from sunlight, thereby protecting human health.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Xu Dong, Yiren Lu, Zhengyu Wu, Xianhua Liu, Yindong Tong
Summary: Understanding photochromism is crucial for developing new ways to modulate the optical responses of materials. In this study, ammonium tungsten bronze (NH4)xWO3 with a unique flower-like hierarchical structure was prepared, leading to a significant advance in photochromism. The large surface area exposed more photoactive sites, resulting in a high color difference. The study also revealed the essential surface structure-breaking behaviors of hydrogen bonds between NH4+ and tunneled WO3 frameworks. Furthermore, the energy-saving window based on hydrogen ammonium tungsten bronze coating showed great potential for reducing indoor air temperature and temperature difference between various indoor areas.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Weizhe Zhang, Fukuan Li, Peng Zhang, Wei Zhang, Shuai Liu, Cuicui Lv, Kexun Li
Summary: This study investigates the synergistic effect of Co3O4 and Mn on the electroreduction of nitrate. The results show that the electrodes doped with Mn, such as Mn1.5Co1.5O4 and 3-Mn/Co, exhibit significantly higher nitrate removal efficiency compared to Co3O4, confirming the existence of the Co-Mn coeffect.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
