Article
Green & Sustainable Science & Technology
Kunlin Li, Yu Tian, Xie Tang, Peng Gao, Xiao Peng, Ping Ning, Chi Wang, Fei Wang, Xin Sun, Kai Li
Summary: Efficient catalysts are needed for the simultaneous removal of hydrogen cyanide (HCN) and carbonyl sulfide (COS). In this study, ZnNiAl compounds doped with rare earth metals were synthesized and used for the hydrolysis of HCN and COS. The results showed that Ce doping changed the chemical state and electronic structure of ZnNiAl, resulting in abundant active species for the adsorption and dissociation of HCN and COS. Ce doping also significantly improved the catalytic performance of ZnNiAl.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Haolan Liu, Yuanyuan Jiang, Ruru Zhou, Zhili Chang, Zhaoyin Hou
Summary: In this study, a catalyst with abundant Cu sites and strong metal-support interaction was synthesized through controlled calcination and reduction. The catalyst demonstrated excellent activity and selectivity for the dehydrogenation of ethanol to acetaldehyde, and maintained its activity for a prolonged period of time.
Article
Chemistry, Physical
Dolores G. Gil-Gavilan, Daniel Cosano, Miguel Castillo-Rodriguez, Gustavo de Miguel, Dolores Esquivel, Cesar Jimenez-Sanchidrian, Jose R. Ruiz, Francisco J. Romero-Salguero
Summary: Hydrogen is being extensively studied as one of the main future energy sources, and efforts are being made to directly convert solar energy into H-2. Hydrotalcites, a type of two-dimensional material, have shown potential for the H-2 evolution reaction when used alone or in combination with other materials. This study focused on preparing composites of Co-Al hydrotalcite with carbon spheres or nanotubes and found that such composites generally improve H-2 production. The nature, structure, and characteristics of the different materials, as well as the role and mechanism of each component, were investigated.
APPLIED CLAY SCIENCE
(2023)
Article
Energy & Fuels
Yi Chen, Yongsheng Zhang, Wei Lin, Xianglin Cheng, Jianshe Wang, Xiaolong Liu, Chunbao Charles Xu, Renfeng Nie
Summary: In this study, two-dimensional Co-Al hydrotalcite catalysts were successfully fabricated for the conversion of biomass to value-added chemicals under mild conditions. The optimized CoAl-LDO600 catalyst achieved a high yield (94.2%) of octadecanol from oleic acid using iso-propanol as hydrogen donor at 200 degrees C. This catalyst exhibited excellent magnetic separability, stability, and versatility for various fatty acids with alcohol yields ranging from 89.1% to 96.7%.
Article
Environmental Studies
Sulgiye Park, Cameron L. Tracy, Rodney C. Ewing
Summary: China has dominated the global production of rare-earth elements (REE) since the 1990s, primarily due to domestic factors. The decline in US REE production, which facilitated China's market dominance, can be attributed to a misalignment between the US government and corporate interests. Strategic cooperation between China and the US in the REE sector could diversify and improve the resilience of supply chains, mitigating potential economic and national security risks.
Article
Chemistry, Physical
Irshad Ahmad, Shazia Shukrullah, Muhammad Yasin Naz, Ejaz Ahmed, Mukhtar Ahmad
Summary: This study investigated the use of zinc oxide-based heterojunction photocatalysts for improved hydrogen production from water splitting. The co-doped TS-ZnO/CNTs composite showed higher hydrogen evolution activity than other doped photocatalysts. When used with a sacrificial agent, the TS-ZnO/CNTs photocatalyst achieved a remarkable hydrogen evolution rate under visible light illumination. The study also deduced the photocatalytic mechanism involved in water splitting with TS-ZnO/CNTs photocatalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Weijun Qiao, Shuqian Yang, Lei Zhang, Yuan Tian, Honghao Wang, Caishun Zhang, Zhixian Gao
Summary: Different divalent metals were used to prepare Cu-Ce/M-Al catalysts for hydrogen production from methanol steam reforming, with Ce-Cu/Zn-Al catalyst showing the best performance. The dispersion, reduction temperature, and oxygen vacancies on the surface played key roles in determining the catalytic performance of the catalysts. At optimal conditions, the methanol conversion reached 100% and the H-2 production rate was 779.7 STP cm(3) kg(-1) s(-1).
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Jose L. Contreras, Anabel Figueroa, Beatriz Zeifert, Jose Salmones, Gustavo A. Fuentes, Tamara Vazquez, Deyanira Angeles, Leticia Nuno
Summary: Ni-Co/ex-hydrotalcite catalysts stabilized with tungsten oxides showed high performance in ethanol steam reforming reaction, with the catalyst having a Ni/Co atomic ratio of 2.22 displaying the best conversion and selectivity to H2. The cooperative action between Ni and Co, along with the stabilization effect of tungsten oxides, contributed to the stability and regeneration of the catalysts in situ at 600 degrees C.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Yezi Lu, Lulin Tang, Ping Wang, Miao He, Cheng Yang, Zhenxing Li
Summary: Rare earth-based alloy nanostructures show great potential as materials in the hydrogen evolution reaction (HER), with a relatively negative enthalpy of alloy formation compared to traditional transition metal alloys. They possess the advantages of transmission metal catalysts and perform better in selectivity and stability. However, the reduction potentials of the rare earth (RE) group are relatively low, and the synthesis methods of the RE alloy nanostructure are crucial.
Article
Chemistry, Physical
Muhammad Anees Ul Hasnain, Asif Hussain Khoja, Faaz Ahmed Butt, Mariam Ayesha, Faisal Saleem, Muhammad Taqi Mehran, Rabia Liaquat, Majid Ali, Zaki Ismail Zaki
Summary: In this study, partial oxidation of methane using Mg-Ni-Al (MNA) hydrotalcite promoted CeO2 catalyst was investigated. The CeO2@MNA catalyst showed good activity and stability, making it suitable for catalytic synthesis reactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Kartick Chandra Majhi, Mahendra Yadav
Summary: The water electrolysis process requires high input energy to accelerate the slow reactions of hydrogen and oxygen evolution. The development and application of efficient electrocatalysts are essential for these reactions. In this study, rare earth phosphate PrPO4 exhibited better catalytic activity than YPO4 catalyst for the hydrogen evolution reaction (HER) in an acidic medium.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Seong Chan Lee, Jae Hyung Choi, Chul Woo Lee, Seung Han Woo, Jaekyoung Lee, Hee Chul Woo
Summary: This study focuses on marine biomass as an alternative sustainable energy resource, specifically investigating the use of bio-oil from Saccharina japonica as a renewable H-2 source. The study demonstrates the importance of catalyst design in maximizing H-2 production rates.
Article
Engineering, Chemical
Mohan Lal Meena, Krishan Kumar, Pratibha Saini, Mukul Sethi, Surendra Saini, Anisha Mohapatra, Sudipta Som, Ruo-Yun Lin, Chih-Wei Chu, Chung-Hsin Lu, Shawn D. Lin, Vijay Parewa
Summary: In this study, a visible-light driven one-step protocol was developed to selectively convert aromatic carboxylic acids to aldehydes using water as a sustainable hydrogen source, urea as a hole scavenger, and Eu3+ doped Na2CaP2O7 phosphor as a viable photocatalyst. The work provides a 'waste-to-value' route for solar energy driven preparation of valuable chemicals by simultaneous photocatalytic treatment of urea-rich waste water.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Chemistry, Physical
Songjie Hu, Jia-nan Gu, Kan Li, Jianxing Liang, Yixin Xue, Xin Min, Mingming Guo, Xiaofang Hu, Jinping Jia, Tonghua Sun
Summary: A series of Zn-Al oxides calcined from ZnAl hydrotalcite-like catalysts were prepared and applied for COS removal. The catalyst doped with 20 wt% Sm showed better catalytic performance. The effects of different precipitation bases on the catalysts' activities were investigated, and it was found that KOH and K2CO3 as the precipitation base produced the catalyst with the best performance. Doping of rare earth metals weakened the crystallinity and the introduction of an appropriate amount of Sm ions significantly enhanced the proportion of adsorbed oxygen species, contributing to the increase of basic sites.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Hayk H. Nersisyan, Wan Bae Kim, Woo Seok Choi, Hwa-Young Woo, Soon-Jik Hong, Jong Hyeon Lee
Summary: This study investigates the formation of two-dimensional REB6 nanostructures from a specific reaction mixture, resulting in nanosheets with small thickness and large surface area that can be used as catalysts.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Yong Hu, Qian Xu, Xiujing Zou, Xueguang Wang, Hongwei Cheng, Xingli Zou, Xionggang Lu
Summary: Metal oxide-modified Ni/CaO dual functional materials (M-Ni/Ca DFMs) demonstrate excellent performance in CO2 capture and hydrogenation, especially La-Ni/Ca with the highest CO2 adsorption capacity, conversion, and CO yield. The addition of metal oxides increases the number of basic sites, playing a crucial role in efficient CO2 capture. The outstanding cyclic stability of La-Ni/Ca is attributed to the presence of La2O3, which inhibits the growth and sintering of CaO and Ni particles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Hongwei Cheng, Hongliang Chen, Chao Jin, Haili Bai
Summary: To modulate the properties of antiferromagnetic (AFM) materials, La0.92Sr0.08MnO3 (LSMO) films were deposited on different substrates, showing AFM metallic, AFM insulating, and ferromagnetic (FM) insulating states. The temperature-dependent Raman spectra revealed that the FM state of LSMO/MgO resulted from lattice distortion caused by large lattice mismatch. The LSMO/STO and LSMO/LAO films exhibited metal-insulator transitions (MIT) at different temperatures due to electron-phonon coupling induced by lattice distortion.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Chemical
Yanbo Liu, Tong Duan, Ning Wu, Wanyu Qiao, Wei Nie, Qiangchao Sun, Hongwei Cheng
Summary: A modified strategy is urgently needed to improve the oxygen permeation flux and stability of membranes under CO2 atmosphere. By doping with Al ions, the PSFAl OTM shows high oxygen permeability and stability, making it a promising candidate for CO2 capture.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Kun Wang, Dongyang Li, Xingli Zou, Hongwei Cheng, Chonghe Li, Xionggang Lu, Kuochih Chou
Summary: The Modified Quasichemical Model in the Pair Approximation (MQMPA) is effective for capturing the thermodynamic characteristics of binary solutions with Short-Range Ordering (SRO). When applied to ternary solutions, a geometric interpolation method is needed to extend the bond energy expression. This paper aims to implement such extension through a generic geometric interpolation approach.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Miaomiao Gong, Yukun Fu, Wenli Yao, Xianfa Rao, Qian Zhang, Shengwen Zhong, Qiangchao Sun, Hongwei Cheng
Summary: In this study, nano-Li2SnO3 coating coupled with Sn4+-doping was successfully synthesized to stabilize Co-free LiNi0.8Mn0.2O2 (NM-82) cathodes. The NM-82 electrode modified with 2 wt % Li2SnO3 (NM@ Sn-2) exhibited enhanced electrochemical reversibility and rate capability. The NM@Sn-2 cathode achieved the highest specific capacity and remarkable capacity retention, outperforming the NM-82 cathode. The improved performance of the NM@Sn-2 cathode can be attributed to its stronger structure, lower Li/Ni cation mixing degree, and faster Li+ kinetics.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Yong Hu, Qian Xu, Yao Sheng, Xueguang Wang, Hongwei Cheng, Xingli Zou, Xionggang Lu
Summary: Three-dimensional Ni/CaO networks were synthesized and used as dual functional materials for combined CO2 capture and catalytic hydrogenation. The addition of Ni dispersed in CaO substrate significantly lowered the reaction temperature and enhanced the conversion rate of calcium carbonate species, resulting in increased productivity of CO. Ni/CaO exhibited excellent cyclic stability due to the three-dimensional network structure inhibiting particle growth and sintering of CaO particles.
Article
Chemistry, Physical
Yanbo Liu, Qiangchao Sun, Tong Duan, Chaoyun Liu, Hongwei Cheng
Summary: The development of a perovskite-type oxygen transport membrane with high stability is important for thermochemical water splitting for hydrogen production. This study investigated the stability enhancement of a doped high valence ion (Nb5+) in the Pr0.6Sr0.4Fe0.9Nb0.1O3-delta (PSFN) oxygen transport membrane, considering the crystal structure, thermal expansion property, and roles of Fe3+/4+ ions. The introduction of Nb inhibits phase transition, thermal expansion, and lattice oxygen release, improving structural stability even in a reducing atmosphere. Additionally, a decrease in the average valence of Fe ions enhances the chemical stability of PSFN, with a Fe3+ to Fe4+ ratio close to 2:1 contributing to long-term stability in hydrogen production from water splitting.
Article
Electrochemistry
Chenteng Sun, Qiaoling Wang, Wen Tao, Aqiao Li, Qian Xu, Ying Li, Shenggang Li, Xingli Zou, Hongwei Cheng, Xionggang Lu
Summary: The anodic dissolution of hypoeutectic cast iron consisting of pearlite and ledeburite in sulfuric acid solution was investigated using electrochemical methods. The oxidation activities of the two phases in cast iron, ferrite and cementite, were evaluated based on their structural and electronic properties using first-principles calculations. The results indicate that ferrite undergoes anodic dissolution at a more negative potential compared to cementite. The microstructure of pearlite is more prone to crumbling during anodic dissolution compared to ledeburite due to the higher amount of ferrite dissolution from the pearlite framework. First-principles calculations demonstrate that the Fe 3d-band center of iron is closer to the Fermi level than that of cementite, indicating higher activity of iron atoms in ferrite and their susceptibility to electrophilic attack. This intrinsic reason explains why cementite is more stable than ferrite under anodic polarization in sulfuric acid solution.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Sha Chen, Hongwei Cheng, Yanbo Liu, Qiangchao Sun, Xionggang Lu, Shenggang Li
Summary: Density functional theory (DFT) calculations were used to investigate the reaction mechanism of CO oxidation on doped SrFeO3-delta-based perovskite materials. The results showed that metal doping affected the adsorption of CO molecules, and the reaction with lattice oxygen was inhibited by certain dopants while promoted by others. This study provided valuable insights into the interaction between CO and the surfaces of doped perovskite materials, which is important for thermochemical water splitting applications.
COMPUTATIONAL AND THEORETICAL CHEMISTRY
(2023)
Review
Chemistry, Physical
Wei Nie, Hongwei Cheng, Qiangchao Sun, Shuquan Liang, Xionggang Lu, Bingan Lu, Jiang Zhou
Summary: Rechargeable aqueous Zn-ion batteries (AZIBs) are considered a promising alternative to traditional energy-storage devices due to their low cost, abundant resources, environmental friendliness, and safety. However, the use of Zn metal anodes in AZIBs faces several challenges including dendrite formation, hydrogen evolution, corrosion, and passivation. This review provides a comprehensive summary of these issues and proposes strategies to develop high-performance Zn anodes, including structurally designed Zn anodes, Zn alloy anodes, surface modification, electrolyte optimization, and separator design. It offers valuable insights and perspectives for the development and application of stable Zn metal anodes in power grid systems.
Article
Chemistry, Physical
Qiangchao Sun, Linhui Chang, Yanbo Liu, Wei Nie, Tong Duan, Qian Xu, Hongwei Cheng, Xionggang Lu
Summary: Based on the charge intercalation mechanism, an original chrysanthemum-like organic conductive polyaniline (PANI) intercalated hybridized cathode (PANI0.22 center dot V2O5 center dot 0.88H2O) is developed. The electrostatic interactions between Zn2+ and the V-O layer can be effectively weakened due to the pillars effects and unique pi-conjugated structure of PANI. The 3D micromorphology provides abundant active sites for Zn2+ transfer and intimate contact with electrolytes. The chrysanthemum-like PANI-intercalated V2O5 exhibits a high specific capacity and excellent cycling stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Yanshuai Yuan, Lei Wang, Qiangchao Sun, Wei Nie, Linhui Chang, Shuangqiang Chen, Hongwei Cheng
Summary: Nickel-rich layered oxides are highly promising cathode materials for efficient lithium-ion batteries, but their interfacial instability and structural degradation limit their large-scale applications. In this study, a multifunctional antispinel NiFe2O4 coated LiNi0.6Co0.2Mn0.2O2 material is synthesized, which improves the cycling stability of the Ni-rich material. The NiFe2O4 coating suppresses transition metal dissolution, prevents unwanted phase transitions, inhibits oxygen vacancy generation, and stabilizes the crystal structure. Additionally, it facilitates Li+ transport kinetics between particles. The optimized 2 wt% NiFe2O4@LiNi0.6Co0.2Mn0.2O2 sample shows higher capacity retention at high voltages and excellent rate capabilities, demonstrating the effectiveness of constructing a versatile bimetallic oxide protective layer for high-energy and safe lithium-ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Yu Lei, Xinbo Hu, Chuncheng Zhu, Chenteng Sun, Qian Xu, Hongwei Cheng, Xingli Zou, Xionggang Lu
Summary: The ultrasound-assisted copper cementation in zinc sulfate solution was studied, analyzing the effect of ultrasound on the morphology of the cemented product and Cu2+ removal efficiency. The results showed that ultrasound has a thermal effect on the solution, promoting copper cementation. Increasing ultrasound power enhances Cu removal and diffusion in the solution. However, ultrasound also increases the hydrogen evolution reaction between zinc and proton, leading to excessive zinc consumption and precipitation of basic zinc sulfates.
MINERALS ENGINEERING
(2023)
Article
Chemistry, Physical
Yong Hu, Qian Xu, Yao Sheng, Xueguang Wang, Hongwei Cheng, Xingli Zou, Xionggang Lu
Summary: It was found that the alkali metal-modified Ni/CaO dual-functional material (Na-Ni/CaO) exhibited stable CO2 capture-conversion activity over 20 cycles, with a high CO2 capture capacity of 10.8 mmol/g and a high CO2 conversion rate of 60.5% at 650°C. The improved CO2 capture capacity was attributed to the enhanced surface basicity of Na-Ni/CaO, and the incorporation of Na also contributed to the formation of double salts, which promoted the stability of the material.
Article
Chemistry, Physical
Zhen Wang, Chenteng Sun, Qian Xu, Xingli Zou, Hongwei Cheng, Xionggang Lu
Summary: This study thermodynamically evaluated the reaction between CO2 and Li2CaSiO4 and examined the CO2 adsorption performance of synthesized Li2CaSiO4 with and without alkali carbonates using thermal analyses. The results showed that alkali carbonates can improve the kinetics and facilitate the CO2 adsorption of Li2CaSiO4.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
