Article
Engineering, Chemical
Mingyuan Hu, Hui Tian
Summary: A three-column process for catalytic distillation was established to efficiently convert cyclohexene to cyclohexanol, with simulation showing good advantages. Emphasis was placed on stable operation of the distillation system and design of the control scheme.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Wen Yao, Anqian Hu, Jieting Ding, Nanshu Wang, Ze Qin, Xianfeng Yang, Kui Shen, Liyu Chen, Yingwei Li
Summary: An etching-functionalization strategy was developed to construct a tannic-acid-functionalized MOF with a unique hollow-wall and 3D-ordered macroporous structure. This MOF can be further used as a precursor for the synthesis of cobalt supported on oxygen/nitrogen co-doped carbon composites with H-3DOM structures and hydrophilic surface. The resulting catalyst exhibits high electrocatalytic activity in the oxygen reduction reaction.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mengyao Yang, Yaquan Wang, Wenrong Liu, Jiaxin Lu, Mingxue Shi, Shuhui Wu, Lingzhen Bu, Yaqiong Zhi, Zhiqiang Wang, Juncai Sang, Kailiang Chu, Yitong Huang, Niandong Guo, Liping Qu
Summary: A series of hierarchical ZSM-11 nanorods aggregates were prepared by the addition of CTAB in a hydrothermal crystallization method. The addition of CTAB effectively increased the crystallinity of the zeolite, and the external specific surface areas and pore volume of the zeolite increased dramatically. The zeolite synthesized at the CTAB/SiO2 ratio of 0.015 exhibited the highest reaction rate with a cyclohexene conversion of 14.23%.
Article
Polymer Science
Wen-Shu Peng, Yang-Yang Lin, Yong-Jun Sun, Bing-Qi Zhu, Shi-Hai Li, Jing Li, Jian-Bo Qu
Summary: Hierarchically bicontinuous polystyrene monoliths (HBPMs) with homogeneous skeletons and glycopolymer surfaces have been fabricated for the first time using the medium internal phase emulsion (MIPE) templating method. These HBPMs exhibit a bimodal pore size distribution and excellent biocompatibility, homogeneous skeletons, strong mechanical strength, and high bed permeability, overcoming practical limitations of the second generation of polystyrene monoliths. The results suggest that HBPMs have great potentials in catalysis, separations, and biomedical applications.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Energy & Fuels
Zihan Meng, Neng Chen, Shichang Cai, Rui Wang, Weibin Guo, Haolin Tang
Summary: The study focuses on a 3D hierarchical porous bifunctional oxygen electrocatalyst synthesized using both soft and hard templates, showing superior performance in oxygen reduction reaction, oxygen evolution reaction, and rechargeable zinc-air battery applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Inorganic & Nuclear
Binhang Wang, Tianyu Wu, Guangrui Chen, Xinyao Liu, Wen Li, Qingxia He, Dong-Sheng Li, Bu Yuan Guan, Yunling Liu
Summary: Using a multistep molecule/ion-exchange strategy, Fe,Ni-doped CoSe/N-doped carbon nanoparticles with tunable pore structures and compositions were synthesized, showing enhanced electrocatalytic performance for oxygen evolution.
INORGANIC CHEMISTRY
(2021)
Article
Engineering, Chemical
Jitendra Diwakar, Selvamani Arumugam, Bhavna Saini, Anup Prakash Tathod, Nagabhatla Viswanadham
Summary: Mesoporous titanium-containing alumino-silicate materials with various Ti/Si ratios (AlSi-Ti(n); n = Ti/Si mole ratio) were synthesized using a novel single-step sodium-free method. The characterized materials showed ordered mesoporous structure and uniformly dispersed Ti species in +4 and +3 oxidation states, making them suitable for selective oxidation of allylic C-H bond. The prepared mesoporous Ti-AlSi(n) samples exhibited excellent activity in the oxidation of cyclohexene, achieving 100% conversion and 100% selectivity to ketone-alcohol (KA) oil under mild reaction conditions (35 degrees C and 30 min reaction time). The AlSi-Ti(0.05) material has potential as a promising catalyst for selective oxidation of cyclohexene.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Hangjin Miao, Wenshi Zhong, Huili Yuan, Wei Jiang, Gengshen Hu
Summary: Nitrogen-doped mesoporous carbons were successfully synthesized using cost-effective precursors such as TEOS, TEA, and TEAOH. The carbon material TUD-700, synthesized using a hard template method, exhibited excellent pore structure and surface area, suitable for supercapacitors, and also showed promising CO2 capture performance as solid amine sorbents.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Zeyang Liu, Yongjie Wang, Kaihong Liu, Shanshan Wang, Haocheng Liao, Yuanli Zhu, Baoming Hou, Chunxia Tan, Guohua Liu
Summary: This study developed a cost-efficient hydration/asymmetric transfer hydrogenation (ATH) process for the synthesis of valuable chiral alcohols from alkynes, achieving good yields with up to 99% ee values. The immobilized Ru/diamine catalyst could be recycled at least three times in the sequential reaction system, demonstrating a general method for sustainable organic synthesis through one-pot asymmetric sequential catalysis.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Zhengzheng Yang, Zhi Chen, Yumeng Huang, Na Zhang, Yunxiang Li, Huangwei Zhang
Summary: In this study, a hierarchically porous ceria-zirconia composite with micrometer scaled macroporous structure, CZ-8, was developed for enhancing catalyst-soot contact efficiency and soot catalytic combustion performance. The CZ-8 catalyst showed definite micrometer scaled macroporous (0.5-5.0 mu m) and interconnected mesoporous (-20 nm) structure. Compared to conventional mesoporous ceria-zirconia catalysts, the CZ-8 catalyst allowed the entry of filamentous diesel soot particulate into micrometer-scaled pores, improving contact efficiency, and facilitating oxygen-soot contact through mesopores. The CZ-8 catalyst displayed a significantly lower light-off temperature and better soot catalytic combustion performance, suggesting the promising potential of hierarchically porous structures in controlling diesel exhaust particulate emissions.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Shouchao Zhong, Xingxiao Li, Yue Wang, Dong Han, Jing Peng, Yan Hao, Long Zhao, Jiuqiang Li, Maolin Zhai
Summary: A novel quaternary phosphonium-grafted hierarchically macro-/mesoporous silica material, HPS-C-P, showed high adsorption capacity for ReO4- with good radiation resistance and cyclic adsorption performance. It exhibited extremely high adsorption selectivity towards ReO4- in the presence of competitive anions, providing a new method for selectively removing Re from an aqueous solution even in a radiation environment.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Jianing Zhang, Shan Li, Jie Liu, Xuebing Ma
Summary: This study presents a universal strategy for the direct covalent immobilization of structurally different chiral organocatalysts upon hollow mesoporous organic polystyrene nanospheres (HMOPNs) via a one-pot tandem reaction. These supported chiral organocatalysts show excellent catalytic performances in the synthesis of natural products and pharmaceuticals, with high yields (76-96%) and excellent enantioselectivities (93-99% ee). This one-pot immobilization strategy provides a universal way for the low-cost production of chiral molecules.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Applied
Sheng Zhou, Jiayi Qin, Xueru Zhao, Jing Yang
Summary: This study presents a high-performance electrocatalyst CoFe/3D-NLG with superior ORR/OER activities, achieved by a 3D hierarchically porous graphene framework with pyridinic-nitrogen-cobalt active sites. The catalyst structure enhances reversible oxygen electrocatalysis performance, outperforming state-of-the-art noble-metal electrocatalysts, and demonstrates excellent performance in rechargeable Zn-air batteries.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Gao-Chen Yang, Qi-Yun Pan, Peng Yang, Yi-Si Liu, Yue Du, Kai Wang
Summary: A hierarchically macro/mesoporous phosphotungstic acid (HPW)/TiO2 composite was fabricated and applied as a catalyst in fuel oil desulfurization. The composite showed excellent catalytic performance with high removal rate and good catalytic activity stability.
Article
Chemistry, Inorganic & Nuclear
Jieru Wang, Ruiqin Gao, Qinggang Huang, Xiaojie Yin, Mu Lin, Shiwei Cao, Desheng Chen, Fangli Fan, Xiaolei Wu, Zhi Qin, Zhijun Guo, Jing Bai, Jian Chu, Wei Tian, Cunmin Tan, Bolin Li, Nianwei Cheng, Zimeng Jia
Summary: The HMMA material synthesized has hierarchical macro-/mesoporous structures with large surface area and high absorption capacity for Mo ions. The absorption mechanism involves strong interactions between Mo ions, hydroxyl groups on the surface of γ-Al2O3, and adjacent aluminum atoms. A Mo-99 generator prepared using HMMA showed high Tc-99m recovery rate for potential application in nuclear medicine.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Engineering, Environmental
Zhiyuan Wang, Lingbo Kong, Zewen Guo, Xinyu Zhang, Xiaomei Wang, Xu Zhang
Summary: The bamboo-like SiOx/C@C structure developed in this study provides a self-buffering space and prevents direct contact of the electrolyte with the interior of NT during lithiation-delithiation cycles, avoiding the accumulation of solid-electrolyte interphase (SEI) layer. The outer carbon coating also provides directional mechanical constraint for inward volume expansion and helps achieve a high electron transfer rate, leading to a large reversible capacity and durable cycle life. This unique and scalable structure shows potential value for diverse energy storage materials.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yingchun Guo, Feng Liu, Lei Feng, Xiaomei Wang, Xu Zhang, Jinsheng Liang
Summary: By elaborately designing, constructing ordered macro-mesoporous carbon with nonprecious metal single-atom sites can significantly improve catalytic performance, as demonstrated by the exceptional yield and selectivity for quinolines hydrogenation reaction and outstanding performance for the oxygen reduction reaction achieved in this study.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Liqing Cheng, Lingbo Kong, Xu Zhang, Xiangfei Kong
Summary: The study presents the design and construction of photo-thermal and electro-thermal dual-responsive nanocapsules, IPW@CLPS@PPy, which exhibit good shape stability, ideal phase change enthalpy, excellent thermal stability, and cyclability. The PPy functional outlayer provides the nanocapsules with excellent solar light absorption capacity and electrical conductivity, resulting in ideal photo-thermal and electro-thermal conversion efficiency.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Multidisciplinary
Wenchang Sun, Yueming Hou, Xu Zhang
Summary: A novel bi-functional microencapsulated phase change material (MEPCM) with both thermal energy storage and carbon dioxide photoreduction capabilities was successfully designed and fabricated. The results show that the material has good thermal properties and CO2 reduction efficiency, presenting a potential application in the field of temperature regulation and air purification.
Article
Engineering, Multidisciplinary
Lingbo Kong, YaJing Li, Xiangfei Kong, ZhiYong Ji, Xiaomei Wang, Xu Zhang
Summary: A novel flexible superhydrophobic thermal energy storage coating without fluoride was developed, showing high enthalpy and good photothermal conversion efficiency. The coating exhibits excellent fluorine-free superhydrophobicity, corrosion resistance, and self-cleaning properties, ensuring sustainable photothermal conversion efficiency and good flexibility for practical applications.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Chemistry, Physical
Hao Han, Xiaomei Wang, Xu Zhang
Summary: This study presents a strategy for synthesizing a novel electrocatalyst with densely isolated single Fe atoms scattered on hierarchically ordered porous N and S codoped carbon. The catalyst exhibits superb oxygen reduction reaction (ORR) performance, methanol tolerance, and long-time stability in both alkaline and acidic electrolytes. It also outperforms Pt/C as a cathode catalyst in a zinc-air battery, achieving higher maximum power density and specific capacity. The synthesis strategy proposed in this work offers numerous opportunities for synthesizing high-performance ORR catalysts by combining delicate control of the catalyst structure with heteroatom doping.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yongli Cheng, Xiaomei Wang, Lei Feng, Xu Zhang
Summary: Hierarchical ordered porous weak cross-linked polystyrene solid acid catalysts were successfully prepared using dual template method, showing higher activity in acid-catalyzed reactions.
Article
Chemistry, Multidisciplinary
Xian Qi, Yaxian Du, Ziqiang Zhang, Xu Zhang
Summary: Janus particles for oil-water separation have been widely studied. In this study, bowl-shaped Janus particles were prepared using a thiol-ene click reaction and selective etching. These particles showed convex hydrophilic and concave oleophilic surfaces and exhibited high efficiency in separating micro-sized oil droplets from an emulsion within a short period of time. The underlying mechanism for the coalescence of oil droplets using these Janus particles was proposed based on experimental and theoretical results.
Article
Engineering, Environmental
Hongyan Nie, Panyu Yan, Xiaomei Wang, Xu Zhang
Summary: A bulk carbon adsorbent with a bionic structure was successfully synthesized. The carbon microcapsules with the internal structure of beef omasum were integrated by interconnected macropores to form the bulk carbon adsorbent ICM-BO. ICM-BO exhibited excellent adsorption capacity and reusability due to the hierarchical nanoscale needle-like structure, interconnected macropores, and monolith nature.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Composites
Qiguo Hao, Xu Zhang, Shuang Liu, Hongjun Peng, Pengyu Zhang, Shengyang Yu, Zhiyi Mao
Summary: By assembling mercapto-anchoring graphene oxide (GO) and epoxy-anchoring SiO2 nanoparticles (NPs) through mercapto-epoxy click chemistry, three-dimensional nanomaterials (GO-SiO2) were formed. The enhanced mechanical properties of epoxy composites were attributed to the improved interface compatibility and dispersion resulting from the covalent bonding between SiO2 NPs and GO.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Xinxin Sun, Zhiyuan Wang, Haohui Zhang, Kaize Si, Xiaomei Wang, Xu Zhang
Summary: In this study, a honeycomb-like SiOx/C nanoarchitecture with carbon coating based on a 3D ordered macroporous (3DOM) structure was developed. The carbon cladding buffers volume expansion and enhances electronic conductivity, resulting in high reversible capacity and good cycling stability in lithium-ion batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yingchun Guo, Xinxin Wang, Lei Feng, Feng Liu, Jinsheng Liang, Xiaomei Wang, Xu Zhang
Summary: This study presents a method for the large-scale and solvent-free preparation of hierarchical pore single-atom catalysts by combining ball milling and pyrolysis. The resulting Ni-SAs/NPs@BNCNTs exhibit excellent photothermal performance due to the carbonaceous species and plasmonic excitation of the Ni nanoparticles. The catalyst also shows prominent catalytic performance in CO2 fixation.
Article
Chemistry, Physical
Yingchun Guo, Weijia Chen, Lei Feng, Yanchen Fan, Jinsheng Liang, Xiaomei Wang, Xu Zhang
Summary: A synergistic photothermal catalytic system for CO2 cycloaddition has been constructed using hyper-cross-linked mesoporous poly(ionic liquid)s and nickel-based bamboo-like N-doped carbon nanotubes. The integrated bifunctional catalyst exhibits high activity and stability for CO2 conversion to cyclic carbonates under mild and co-catalyst/solvent-free conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)