Article
Engineering, Environmental
Amr Abdalla, Mansour Mohammedramadan Tijani, Mohanned Mohamedali, Nader Mahinpey
Summary: This study investigated the effects of introducing WO3 into NiO/ZrO2 oxygen carriers for methane CLC, and found that the dual metal oxide oxygen carriers exhibited enhanced oxygen capacity and lower carbon formation compared to their monometallic counterparts. The introduction of WO3 into the NiO/ZrO2 lattice structure led to the formation of an intermediate phase (NiWO4) which improved oxygen carriers' reducibility and metal dispersion. Impregnation synthesis method showed superior performance in terms of cyclic stability and coking resistance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Applied
Xingyun Li, Zhishan Li, Chunqiang Lu, Danyang Li, Zhiqiang Li, Jian Gao, Jiali Wei, Kongzhai Li
Summary: This study proposes a modified NiO/LaFeO3 oxygen carrier to enhance the activity of lattice oxygen in methane partial oxidation. The results demonstrate that the loading of Ni has a significant impact on methane conversion rate and product selectivity, and 5 wt% Ni/ LaFeO3 oxygen carrier exhibits higher methane conversion rate and CO selectivity.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Fabio Blaschke, Marjan Bele, Brigitte Bitschnau, Viktor Hacker
Summary: The study focused on investigating the microscopic effects on the performance of the active catalytic system in the chemical looping process. Different materials were analyzed for their inhibiting and accelerating effects. ZrO2 doped with MgO and Y2O3 showed chemical inertness and formation of a porous morphology, which improved cyclic stability. The HT-XRD and DSC analyzes confirmed the role of microscopic phenomena in the process and their correlation to phase transition. Stabilization of the cubic/tetragonal crystal structure suppressed phase transition and exhibited the highest activity, revealing new principles for oxygen carrier design and understanding the influence of microscopic effects on stability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Electrical & Electronic
Qin Xie, Xinqiang Pan, Wenbo Luo, Yao Shuai, Chuangui Wu, Jiejun Wang, Shitian Huang, Wen Luo, Wanli Zhang
Summary: In this study, Ar+ irradiation was used to modulate the performance of memristors based on single-crystalline LiNbO3 (LN) thin film, effectively reducing energy consumption while maintaining the uniformity of device properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Jiaqi Zhang, Jin Li
Summary: In this study, ZnO/NiO composites with oxygen vacancies were prepared and the existence of phases, morphology, and oxygen vacancies in the material were effectively proven through various testing methods. The results showed that 10% Ni doped OZN-10 exhibited the best photocatalytic activity and gas sensitivity characteristics.
Article
Chemistry, Analytical
Merve Zeyrek Ongun, Sibel Oguzlar, Mustafa Erol
Summary: The performance of optical oxygen sensors can be improved by adding metal oxide semi-conductors (MOSs) additives. In this study, meso-tetraphenylporphyrin (H2TPP) dye was immobilized in a polymeric thin film and NiO, SnO2, and Ni:SnO2 metal oxide particles were added as additives to investigate oxygen-sensitive optical chemical sensor properties. The H2TPP combined with Ni:SnO2 semiconductor exhibited higher oxygen sensitivity, larger response range, higher Stern-Volmer constant, and faster response time compared to other forms.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Beibei Sheng, Dengfeng Cao, Chongjing Liu, Shuangming Chen, Li Song
Summary: Electrocatalysis is a significant process for energy conversion, with factors such as the electronic structure of electrocatalysts and the support playing complex roles in the catalytic process. Recent advances in support effects have been summarized, including the use of synchrotron radiation-based characterizations and in situ/operando studies to better understand the interaction between catalysts and supports. Future attention should focus on optimizing the support for practical applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Jin Li, Lei Wang, Jinrong Li, Yujie Shao, Ziang Liu, Guangzhe Li, Engin U. Akkaya
Summary: Naphthalene endoperoxides are convenient sources of singlet oxygen but their potential as ground-state molecular oxygen carriers remains largely unexplored. A compound with a bimodular design, incorporating an endoperoxide and a physical quencher of singlet oxygen, produces exclusively ground-state molecular oxygen. This compound shows potential as a highly tunable and targetable oxygen carrier in cell culture experiments, enhancing and sustaining cell proliferation.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Engineering, Environmental
Bo Zhang, Huirong Zhao, Gen Liu, Hongzhi Zhang, Bolun Yang, Jianxuan Shang, Zhiqiang Wu
Summary: A large amount of greenhouse gas emissions has caused environmental issues, making it urgent to efficiently convert CO2. In this study, a multistage regeneration CO2 chemical looping conversion process was established and analyzed through simulation. The feasibility of the process was confirmed and additional energy input was required. The modified oxygen carrier showed improved reaction characteristics, and the kinetic parameters of the reaction were determined. This study provides new insights into the chemical looping conversion of CO2.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Yanhui Long, Zhenhua Gu, Shen Lin, Kun Yang, Xing Zhu, Yonggang Wei, Hua Wang, Kongzhai Li
Summary: Chemical looping combustion is a new combustion technology that can generate electricity and capture carbon dioxide for the long term. Research indicates that monolithic oxygen carriers exhibit better adaptability at high flow rates, and combining different orders of oxygen carriers can significantly enhance CH4 conversion and CO2 selectivity.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Engineering, Environmental
Ke Li, Yuanyuan Luo, Bo Liu, Hong Wang, Lei Gao, Guotao Duan
Summary: This study introduces oxygen vacancies into NiO to enhance its sensing performance towards H2S. Theoretical calculations and experimental results demonstrate that the oxygen vacancies can modify the electronic structure of NiO and reduce the reaction barriers of H2S species on the NiO surface, thereby improving the sensing performance. This research is significant for the design of oxygen vacancies in MOS sensors and the understanding of sensing mechanisms.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Yu-Sheng Hsiao, Cai-Wan Chang-Jian, Tzu-Yen Huang, Ying-Lin Chen, Jen-Hsien Huang, Nian-Jheng Wu, Shih-Chieh Hsu, Chih-Ping Chen
Summary: In this study, a novel NiO-based composite material was successfully prepared, which exhibited improved conductivity and cycling stability. By using the spray-drying technique, PANI:PSS/NiO (P-NiO) microspheres were synthesized, and MWCNTs decorated with Ni/NiO nanoparticles were fabricated. The modified MWCNTs in the ternary composite acted as an additive to reduce the external resistance between the electrodes, resulting in excellent capacitive performance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Materials Science, Multidisciplinary
Wei Xu, Xin Mao, Nan Zhou, Qing-Yu Zhang, Bo Peng, Yu Shen
Summary: The study investigated the plasma near the sputtering target using optical emission spectroscopy and found that the atomic oxygen density ([O]) plays a crucial role in the growth behavior and crystallinity of NiO films. By adjusting the sputtering mode and [O] value, it is possible to influence the orientation growth and crystallinity of NiO films.
Review
Biochemistry & Molecular Biology
Yuan Wen, Chenliang Zhou, Linfei Yu, Qiang Zhang, Wenxiu He, Quansheng Liu, Jean-Luc Renaud
Summary: This paper summarizes and analyzes the traditional modification, hydrophobic modification, and amphiphobic modification of catalysts in the Fischer-Tropsch olefin synthesis (FTO). It is found that hydrophobic and amphiphobic modifications have good effects on inhibiting the formation of carbon dioxide, increasing the diffusion rate of olefins, and inhibiting reabsorption.
Article
Energy & Fuels
Jie Gao, Ge Pu, Pengcheng Wang, Cong Yuan, Shuaihui Jia
Summary: This study improved the performance of NiFe2O4 oxygen carrier by doping Ce and loading inert carrier support, increasing hydrogen production efficiency and stability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
