Article
Chemistry, Multidisciplinary
Longcheng Zhang, Jie Liang, Yuanyuan Wang, Ting Mou, Yiting Lin, Luchao Yue, Tingshuai Li, Qian Liu, Yonglan Luo, Na Li, Bo Tang, Yang Liu, Shuyan Gao, Abdulmohsen Ali Alshehri, Xiaodong Guo, Dongwei Ma, Xuping Sun
Summary: MoS2/GF nanosheet on graphite felt shows promising catalytic performance in electrochemical reduction of NO for NH3 production, offering a potential environmentally friendly and efficient approach for nitrogen cycle restoration.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Analytical
Yanyan Sun, Shuang Li, Benjamin Paul, Lei Han, Peter Strasser
Summary: In this study, nitrogen and phosphorus dual-doped carbon nanosheet (NPCNS) catalyst was designed and prepared, showing high electrochemical ORR activity and selectivity for H2O2 production in alkaline medium. The unique 2D nanostructure and synergistic effect between nitrogen and phosphorus dopants contributed to the high practical H2O2 production rate and faradaic efficiency, indicating the potential applications in waste water treatment and pulp and paper industry.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Jie Liang, Qiang Zhou, Ting Mou, Hongyu Chen, Luchao Yue, Yongsong Luo, Qian Liu, Mohamed S. Hamdy, Abdulmohsen Ali Alshehri, Feng Gong, Xuping Sun
Summary: This paper introduces an FeP nanorod array on carbon cloth as an efficient catalyst for NO electroreduction to NH3. Under experimental conditions, the catalyst exhibits low onset potential, high Faradaic efficiency, and large NH3 yield, while maintaining good stability. Furthermore, the catalytic mechanism of the catalyst is investigated through theoretical calculations.
Article
Nanoscience & Nanotechnology
Lisi Xie, Shengjun Sun, Long Hu, Jie Chen, Jun Li, Ling Ouyang, Yongsong Luo, Abdulmohsen Ali Alshehri, Qingquan Kong, Qian Liu, Xuping Sun
Summary: This study presents a method for efficient NH3 synthesis under ambient conditions through in situ derivation of an amorphous Co2B layer on a Co3O4 nanosheet array on a Ti mesh. The Co2B@Co3O4/TM material exhibits excellent catalytic performance, with a maximum Faradaic efficiency of 97.0% and a remarkable NH3 yield of 8.57 mg/h/cm(2), along with durability for stable NO3--to-NH3 conversion over multiple recycling tests and electrolysis duration. The material also shows potential as an efficient cathode material for Zn-NO3- batteries, enabling NH3 production alongside electricity generation. The catalytic mechanisms are further explored through theoretical calculations.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Xianling Wu, Dumei Wang, Xueming Kang, Dongtang Zhang, Yong Yan, Guangsheng Guo, Zaicheng Sun, Xiayan Wang
Summary: The development of methanol-tolerant catalysts is essential for commercializing fuel cells. In this study, we reported a facile synthesis of graphene-supported Pt/Bi catalysts with high oxygen reduction activity and methanol poisoning tolerance. The catalyst showed great potential in the application of direct methanol fuel cells.
Article
Chemistry, Analytical
Wenjuan Shi, Ah-Hyeon Park, Young-Uk Kwon
Summary: In this work, carbon-supported (Pd,Cu)@Pt core-shell nanoparticles with tunable Pt shell thickness are successfully synthesized by reacting pre-formed PdxCuy NPs with Pt(IV) ions. The catalysts exhibit enhanced catalytic activities and superior long-term durability, providing guidance for the commercialization of proton exchange membrane fuel cells.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Qian Liu, Yiting Lin, Shuang Gu, Ziqiang Cheng, Lisi Xie, Shengjun Sun, Longcheng Zhang, Yongsong Luo, Abdulmohsen Ali Alshehri, Mohamed S. Hamdy, Qingquan Kong, Jiahong Wang, Xuping Sun
Summary: Cu3P nanoribbon is proposed as a highly efficient electrocatalyst for the conversion of nitrogen to ammonia. It shows excellent catalytic performance and stability under benign conditions and achieves high Faradaic efficiency and large yield.
Article
Electrochemistry
Meiying Wu, Xiuzhen Wu, Zeming Wang, Bingjie Hu, Huazhang Guo, Baohua Zhang, Liang Wang
Summary: A FeO-based ORR catalyst was successfully designed and synthesized to replace Pt-based materials, showing excellent electrocatalytic performance and long-term stability. The introduction of FeO nanodots improved the graphitization degree of the composite and formed Fe-N bonds in FeO/NCNSs, resulting in superior methanol tolerance and efficient ORR activity.
ELECTROCHIMICA ACTA
(2021)
Review
Chemistry, Physical
Qian Liu, Tong Xu, Yonglan Luo, Qingquan Kong, Tingshuai Li, Siyu Lu, Abdulmohsen Ali Alshehri, Khalid Ahmed Alzahrani, Xuping Sun
Summary: The review summarizes recent progress in strategies for improving NH3 selectivity in the electrochemical N-2 reduction reaction, including electrocatalyst tuning, electrolyte choice, and cell configuration design.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Article
Chemistry, Physical
Sorin Bunea, Manoj Coppens, Atsushi Urakawa
Summary: This work investigates the continuous electrochemical reduction of NO to produce ammonia in a proton exchange membrane (PEM) cell. A ruthenium-based catalyst is used at the cathode and an iridium oxide catalyst is used at the anode. The highest ammonia faradaic efficiency is observed at a cell voltage of 1.9 V. Adjusting the NO flow allows for 97% NO conversion and 93% ammonia faradaic efficiency in a 5.2% NO/He feed. The ammonia yield is 0.51 mmolcm(-2) h(-1), which is one of the highest reported values with the advantage of continuous operation. Experiments with a low NO concentration feed of 983 ppm show 98% conversion at 0V vs pseudo-RHE. Achieving this performance under such mild conditions indicates the great potential of PEM cells for NOx abatement applications and the production of valuable NH(3).
Article
Chemistry, Physical
Feng Bao, Chunyan Hu, Yankun Huang, Huichao Liu, Tang Zhu, Guangtao Cong, Jiali Yu, Caizhen Zhu, Jian Xu, Muwei Ji
Summary: This study proposes a facile strategy to grow Co nanoparticles/N-doped carbon nanotube heterostructure for efficient electrocatalysis on oxygen reduction reaction. Different Co-based complexes or metal-organic frameworks with special morphologies are prepared using various ligands and used as templates for the growth of Co nanoparticles/N-doped carbon nanotubes at high temperature. The resulting heterostructure exhibits high activity and capacity on oxygen reduction reaction, comparable to commercial Pt/C(20%).
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Feng Bao, Chunyan Hu, Yankun Huang, Huichao Liu, Tang Zhu, Guangtao Cong, Jiali Yu, Caizhen Zhu, Jian Xu, Muwei Ji
Summary: This paper presents a facile strategy for growing Co nanoparticles/N-doped carbon nanotube heterostructures with excellent electrocatalytic activity by synthesizing Co-based complexes as templates.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Review
Chemistry, Multidisciplinary
Bin Wu, Haibing Meng, Dulce M. Morales, Feng Zeng, Junjiang Zhu, Bao Wang, Marcel Risch, Zhichuan J. Xu, Tristan Petit
Summary: Nitrogen-doped carbons are a rapidly growing class of materials for oxygen electrocatalysis, offering low cost, environmental friendliness, excellent conductivity, and scalable synthesis. They have the potential to replace precious metal-based electrocatalysts and reduce costs in energy conversion and storage systems.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shulin Zhao, Yue Qin, Xuerong Wang, Chun Wang, Xin Chen, Yu Wang, Jie-Xiang Yu, Xiaojing Liu, Yuping Wu, Yuhui Chen
Summary: Reconstructed Bi2O2CO3 nanosheets (BOCR NSs) are synthesized by an in situ electrochemical anion exchange strategy from Bi2O2SO4, and achieve a high formate Faradaic efficiency (FEformate) of 95.7% at -1.1 V versus reversible hydrogen electrode (vs. RHE). The BOCR NSs also maintain FEformate above 90% in a wide potential range from -0.8 to -1.5 V in H-cell. The in situ spectroscopic studies reveal the anion exchange from Bi2O2SO4 to Bi2O2CO3 and the self-reduction to metallic Bi to construct Bi/Bi-O active site, facilitating the formation of OCHO* intermediate. This demonstrates the potential of anion exchange strategy in designing high-performance catalysts for CO2RR.
Article
Chemistry, Multidisciplinary
Pengyu Liu, Jie Liang, Jiaqian Wang, Longcheng Zhang, Jun Li, Luchao Yue, Yuchun Ren, Tingshuai Li, Yonglan Luo, Na Li, Bo Tang, Qian Liu, Abdullah M. Asiri, Qingquan Kong, Xuping Sun
Summary: A NiO nanosheet array on titanium mesh has been proposed as an efficient catalyst for electrocatalytic NO reduction, achieving high selectivity for NH3 production. Experimental and theoretical calculations reveal the high faradaic efficiency and NH3 yield of the catalyst.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Xiaoya Fan, Chaoqun Ma, Donglin Zhao, Zhiqin Deng, Longcheng Zhang, Yan Wang, Yongsong Luo, Dongdong Zheng, Tingshuai Li, Jing Zhang, Shengjun Sun, Qipeng Lu, Xuping Sun
Summary: In this study, a novel NO3RR electrocatalyst, Co3O4@TiO2/TP, was reported to exhibit excellent Faradaic efficiency and high NH3 yield, as well as strong electrochemical durability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiaoya Fan, Donglin Zhao, Zhiqin Deng, Longcheng Zhang, Jun Li, Zerong Li, Shengjun Sun, Yongsong Luo, Dongdong Zheng, Yan Wang, Binwu Ying, Jing Zhang, Abdulmohsen Ali Alshehri, Yuxiao Lin, Chengwu Tang, Xuping Sun, Yinyuan Zheng
Summary: A highly efficient electrocatalyst for electrochemical nitrate reduction reaction (NO3-RR) is presented in this study, which is constructed by anchoring Co nanoparticles on TiO2 nanobelt array on titanium plate (Co@TiO2/TP). The constructed Schottky heterostructures accelerate the rate determining step and facilitate NO3- adsorption, ensuring the selective conversion to NH3. The Co@TiO2/TP electrocatalyst achieves excellent Faradaic efficiency (96.7%) and high NH3 yield (800.0 mu mol h(-1) cm(-2)) under neutral solution. Moreover, the Co@TiO2/TP heterostructure catalyst exhibits remarkable stability in a 50-h electrolysis test.
Article
Chemistry, Physical
Jie Chen, Longcheng Zhang, Jun Li, Xun He, Yinyuan Zheng, Shengjun Sun, Xiaodong Fang, Dongdong Zheng, Yongsong Luo, Yan Wang, Jing Zhang, Lisi Xie, Zhengwei Cai, Yuntong Sun, Abdulmohsen Ali Alshehri, Qingquan Kong, Chengwu Tang, Xuping Sun
Summary: The use of nickel-iron sulfide nanosheet array on nickel foam as a bifunctional electrocatalyst demonstrates high-performance and cost-effective electrolysis of seawater for hydrogen production. It delivers a current density of 500 mA cm(-2) at overpotentials of 300 and 347 mV for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) in alkaline seawater respectively. Moreover, it only requires a cell voltage of 1.85 V to drive 500 mA cm(-2) in a two-electrode electrolyzer, and shows strong stability for at least 50 hours of electrolysis in alkaline seawater, outperforming recently reported catalyst electrodes for seawater splitting.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Jie Liang, Longcheng Zhang, Xun He, Yan Wang, Yongsong Luo, Dongdong Zheng, Shengjun Sun, Zhengwei Cai, Jing Zhang, Ke Ma, Yinyuan Zheng, Xuping Sun, Chengwu Tang
Summary: By introducing chlorine-cycle as a redox mediator, this study developed a simple approach to expand conversion sites from a limited electrode surface to the entire electrolyte, achieving efficient, economical, and environmentally friendly nitrate synthesis. The nitrate formation rates reach 115.45 mg cm(-2) h(-1) in a three-electrode system and 790.1 mg cm(-2) h(-1) in a two-electrode system, both significantly higher than the rates of state-of-the-art nitrogen electrooxidation, confirming the remarkable effectiveness of this strategy in producing nitrate homogeneously and electrochemically. Importantly, almost no side product nitrite is generated in this work. In addition, the structure changes of electrodes are investigated using (quasi)-in situ techniques.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiaoya Fan, Xun He, Xianchang Ji, Longcheng Zhang, Jun Li, Long Hu, Xiuhong Li, Shengjun Sun, Dongdong Zheng, Yongsong Luo, Yan Wang, Lisi Xie, Qian Liu, Binwu Ying, Xuping Sun
Summary: In this study, high-efficiency electrosynthesis of ammonia via nitrite reduction is achieved using an Ag nanoparticle-decorated TiO2 nanoribbon array on a titanium plate. The system demonstrates a large NH3 yield of 514.3 mu mol h(-1) cm(-2) and a high faradaic efficiency of 96.4% at -0.5 V vs. a reversible hydrogen electrode in 0.1 M NaOH containing 0.1 M NO2-. It also exhibits excellent durability for 12 hours of electrolysis.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Xiuhong Li, Xun He, Jie Yao, Kai Dong, Long Hu, Jie Chen, Longcheng Zhang, Xiaoya Fan, Zhengwei Cai, Shengjun Sun, Dongdong Zheng, Mohamed S. Hamdy, Qian Liu, Yonglan Luo, Yunwen Liao, Xuping Sun
Summary: In this study, Ni nanoparticles strutted 3D honeycomb-like porous carbon framework (Ni@HPCF) was fabricated and used as a high-efficiency electrocatalyst for the selective reduction of nitrite to ammonia. The Ni@HPCF electrode achieved a significant ammonia yield of 12.04 mg h(-1) mg(cat.)(-1) and a Faradaic efficiency of 95.1% in 0.1 M NaOH with nitrite, demonstrating good long-term electrolysis stability.
Article
Chemistry, Inorganic & Nuclear
Chaoxin Yang, Kai Dong, Longcheng Zhang, Xun He, Jie Chen, Shengjun Sun, Meng Yue, Hui Zhang, Min Zhang, Dongdong Zheng, Yongsong Luo, Binwu Ying, Qian Liu, Abdullah M. Asiri, Mohamed S. Hamdy, Xuping Sun
Summary: We report a high-performance and stable seawater splitting electrocatalyst, Fe-NiS/NF, which consists of iron-doped NiS nanosheet array on Ni foam. This catalyst exhibits low overpotentials of 420 and 270 mV for oxygen evolution and hydrogen evolution reactions, respectively, in alkaline seawater. The two-electrode electrolyzer using this catalyst requires a cell voltage of 1.88 V for 1000 mA cm-2 and demonstrates excellent long-term electrochemical durability for 50 hours in alkaline seawater. In situ electrochemical Raman and infrared spectroscopy were employed to study the reconstitution process of NiOOH and the generation of oxygen intermediates under reaction conditions.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Xun He, Long Hu, Lisi Xie, Zerong Li, Jie Chen, Xiuhong Li, Jun Li, Longcheng Zhang, Xiaodong Fang, Dongdong Zheng, Shengjun Sun, Jing Zhang, Abdulmohsen Ali Alshehri, Yongsong Luo, Qian Liu, Yan Wang, Xuping Sun
Summary: Nitrite (NO2-), a nitrogen-containing pollutant, is widely present in aqueous solution and causes environmental and health problems. Electro-catalytic reduction of NO2- is a promising and sustainable method to remove NO2- and produce valuable ammonia (NH3). In this study, NiS2 nanoparticles decorated TiO2 nanoribbon array on titanium mesh (NiS2@TiO2/TM) is reported as an excellent electrocatalyst for ambient NH3 synthesis through NO2- reduction reaction (NO2-RR). NiS2@TiO2/TM demonstrates a satisfactory NH3 yield of 591.9 lmol h-1 cm-2 and a high Faradaic efficiency of 92.1% when tested in NO2--containing solution. Additionally, it exhibits remarkable stability during a 12-hour electrolysis test.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xianchang Ji, Chaoqun Ma, Fei Zhang, Xun He, Xiaoya Fan, Jun Li, Zixiao Li, Ling Ouyang, Longcheng Zhang, Tengyue Li, Donglin Zhao, Yan Wang, Jing Zhang, Zhengwei Cai, Shengjun Sun, Abdulmohsen Ali Alshehri, Qipeng Lu, Xuping Sun
Summary: The construction of Ni nanoparticles on TiO2 nanoribbon array with the Schottky junction resulted in highly selective reduction of NO2- to NH3. Density functional theory revealed that the Ni@TiO2 Schottky junction caused charge rearrangement and optimized adsorptive energy of intermediates, ensuring the selective conversion from NO2- to NH3. The catalyst achieved an impressive NH3 yield of 568.7 μmol h-1 cm-2 and an ultrahigh Faradaic efficiency of 98.5% under ambient conditions with good stability.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Analytical
Ling Li, Longcheng Zhang, Lichen Gou, Siqi Wei, Xiandeng Hou, Li Wu
Summary: Metal-semiconductor composites are widely used as SERS substrates, but their limited stability and poor active sites hinder their commercial application. In this study, a novel self-supporting flexible SERS substrate, Au@CoP/CC, was developed. The substrate exhibited excellent corrosion resistance and a low limit of detection using rhodamine 6G as a model dye. Finite-difference time-domain simulation results showed that the substrate can provide regions with intense local electric field enhancement. Moreover, the Au@CoP/CC substrate can degrade target organic dyes under visible light irradiation, enabling self-cleaning and reproduction of SERS-active substrates.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Shaorui Shi, Shengjun Sun, Xun He, Longcheng Zhang, Hui Zhang, Kai Dong, Zhengwei Cai, Dongdong Zheng, Yuntong Sun, Yongsong Luo, Qian Liu, Binwu Ying, Bo Tang, Xuping Sun, Wenchuang Hu
Summary: In this study, an iron doped cobalt carbonate hydroxide nanowire array on nickel foam (Fe-CoCH/NF) was reported as a high-efficiency oxygen evolution reaction (OER) electrocatalyst in seawater. It exhibited a lower overpotential and better stability compared to CoCH/NF in alkaline seawater. When paired with Pt/C/NF, it achieved a large current density with a low cell voltage in alkaline seawater, surpassing RuO2/NF & PAR;Pt/C/NF.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Lisi Xie, Qian Liu, Xun He, Yongsong Luo, Dongdong Zheng, Shengjun Sun, Asmaa Farouk, Mohamed S. Hamdy, Jun Liu, Qingquan Kong, Xuping Sun
Summary: A brush-like Cu2O-CoO core-shell nanoarray on copper foam (Cu2O-CoO/CF) has been developed for efficient oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance in alkaline seawater electrolyte. The Cu2O-CoO/CF exhibits low overpotentials of 315 and 295 mV at 100 mA cm(-2) for the OER and HER respectively. It also maintains stability for at least 50 hours of electrolysis at 1.82 V and 100 mA cm(-2) in a two-electrode electrolyzer. The excellent performance and hierarchical structure advantages of Cu2O-CoO/CF provide insights for efficient seawater splitting electrocatalyst design.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Hang Qiu, Qiuyue Chen, Jing Zhang, Xuguang An, Qian Liu, Lisi Xie, Weitang Yao, Xuping Sun, Qingquan Kong
Summary: In this study, efficient catalysts C-NiWO4 nanoparticles grown on nickel foam were reported for electrochemical reduction of nitrite (NO2-RR) to generate ammonia (NH3) and remove environmental pollutants from wastewater. The NH3 yield of C-NiWO4/NF catalyst in 0.1 M NaOH containing 0.1 M NO2- was 10,974.36 μg h(-1) cm(-2) at -0.4 V with a Faraday efficiency of 97.6%. Additionally, a Zn-NO2- battery with a C-NiWO4/NF as cathode exhibited a high peak power density of 5.55 mW cm(-2) and provided a simultaneous NH3 yield of 2,194.54 μg h(-1) cm(-2). The NO2-RR mechanism of C-NiWO4/NF was elucidated by theoretical calculations.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Longcheng Zhang, Jie Liang, Xun He, Qin Yang, Yongsong Luo, Dongdong Zheng, Shengjun Sun, Jing Zhang, Hong Yan, Binwu Ying, Xiaodong Guo, Xuping Sun
Summary: We report a cascade chlorine evolution-nitric oxide (NO) oxidation system for the homogeneous synthesis of nitrate, in which NO can be efficiently converted to nitrate by reacting with the active chlorine species. This highly efficient nitrate synthesis system was demonstrated by using a RuO2 nanoparticle-decorated TiO2 nanobelt array on a titanium plate (RuO2@TiO2/TP) under ambient conditions, capable of attaining a high nitrate yield of 95.22 mg cm(-2) h(-1) at 2.1 V versus the reversible hydrogen electrode in NO-saturated 0.5 M NaCl + 0.01 M HClO4. Electrochemical in situ Raman spectroscopy studies reveal the adsorption of Cl-O species on the electrode surface and the key role of high-valence Rux+ (x > 4) at high potentials. The electron paramagnetic resonance results confirmed the existence of chlorine radicals and hydroxyl radicals generated by RuO2@TiO2/TP in the electrolyte.
INORGANIC CHEMISTRY FRONTIERS
(2023)
