Article
Chemistry, Multidisciplinary
Leyla Najafi, Reinier Oropesa-Nunez, Sebastiano Bellani, Beatriz Martin-Garcia, Lea Pasquale, Michele Serri, Filippo Drago, Jan Luxa, Zdenek Sofer, David Sedmidubsky, Rosaria Brescia, Simone Lauciello, Marilena Zappia, Dipak Shinde, Liberato Manna, Francesco Bonaccorso
Summary: The research focuses on synthesizing metallic rutile VO2 (VO2 (R)) nanosheets by topochemical transforming liquid-phase exfoliated VSe2, resulting in 2D non-layered materials with porous morphology and high catalytic activity for water splitting reactions in both acidic and alkaline media.
Article
Chemistry, Applied
Wenhua Xue, Wenxi Chang, Xiaoyun Hu, Jun Fan, Enzhou Liu
Summary: Two-dimensional mesoporous ultrathin Cd0.5Zn0.5S nanosheets with high photocatalytic hydrogen evolution reaction activity were fabricated, exhibiting remarkably high H-2 production activity in pure water. Ternary NiCo2S4 nanoparticles were utilized to facilitate charge separation and enhance the surface kinetics of H-2 evolution over NiCo2S4/Cd0.5Zn0.5S heterojunctions, with the Schottky junction being critical to the enhanced activity.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Haibing Che, Liyang Xiao, Wenyuan Zhou, QinQin Zhou, Hongyi Li, Peng Hu, Jinshu Wang, Xiaobo Chen, Huanli Wang
Summary: A facile hydrothermal method was developed to prepare a heterogeneous photocatalyst by decorating nanorod-assembled orbicular WO3.0.5 H2O on porous carbon nitride nanosheets. The catalyst shows enhanced photo-catalytic performance with a hydrogen generation rate significantly higher than that of pristine graphite carbon nitride, providing a new opportunity for exploring advanced catalysts with superior properties for renewable energy utilization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Keng Chen, Huazhang Guo, Jiye Zhang, Liang Wang, Minghong Wu
Summary: This work focuses on the development of a highly efficient photocatalyst for clean hydrogen production. The metal-free 2D/2D boron/g-C3N4 nanosheet heterojunction (B-CN) was designed and synthesized, which showed a hydrogen generation rate 35 times higher than g-C3N4. The tight heterojunction architecture allows for enhanced light absorption, increased carrier concentration, and efficient charge transfer, leading to improved photocatalytic activity.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Chemical
Jiaowei Yan, Lei Shi, Fangxiao Wang, Lizhu Yao
Summary: A novel photocatalyst was synthesized for efficient hydrogen production in pure water. However, the stability of the photocatalyst is low, and this issue can be resolved by adding hole trapping agent.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Energy & Fuels
Jiaowei Yan, Lei Shi
Summary: The photocatalytic hydrogen evolution of MnxCd1-xS in pure water has been achieved through suitable modification methods and efficient co-catalysts. This study investigates a Ni2P-modified P-doped MnxCd1-xS photocatalyst and finds that the addition of co-catalysts promotes the hydrogen evolution reaction, enhancing the hydrogen evolution performance of PNIMCS.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Environmental
Xin Wu, Shouwei Zuo, Mei Qiu, Yang Li, Yongfan Zhang, Pengfei An, Jing Zhang, Huabin Zhang, Jian Zhang
Summary: This study successfully locates isolated Co atoms on the surface of TiO2 nanosheets, providing efficient catalytic sites for photocatalytic hydrogen evolution. X-ray absorption fine structure measurements confirm that the Co atoms are successfully dispersed on the TiO2 surface via grafting. Experimental and theoretical results demonstrate that the isolated Co atoms can accelerate electron transfer and hydrogen evolution reactions through effective Co-O electronic coupling.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Dongbo Xu, Lijie Chen, Xiaowu Zhang, Lili Li, Qijia Ding, Guoxing Zhu
Summary: In this study, a photocatalyst was prepared by utilizing metal-organic framework derived metal oxides as catalysts, combined with niobate, showing enhanced photocatalytic activity for water splitting. The addition of Co3O4 as a co-catalyst further improved the photocatalytic performance of the catalyst.
SURFACES AND INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Bingbing Zhao, Shun Zhang, Zehui Zhang, Jianfeng Wang, Zhonghua Zhang, Jie Zhang, Haixia Liu
Summary: The synthesis of NiFe-based (oxy)hydroxide and selenide nanosheets anchored on a stainless steel mesh (SSM) by an element-incorporation strategy exhibits outstanding hydrogen and oxygen evolution reaction activities in 1 M KOH. These materials are important for conquering the energy crises and environmental pollution.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Analytical
Hao Sun, Boxuan Jin, Shuyi Cao, Jinghan Zhang, Tianhang Li, Xiaojing Liu, Guihua Liu, Jingde Li
Summary: This study developed a low-cost and high-performance electrocatalyst for water splitting, which is crucial for hydrogen production. By introducing oxygen-deficient CeO2 nanoparticles on (Ni, Co)2P nanosheets, a high-performance hydrogen and oxygen evolution reaction bifunctional electrocatalyst was created. The introduction of defective CeO2 modulated the electronic structure of the CeO2@(Ni, Co)2P/NF interface, resulting in a synergistic effect that promotes the HER/OER reaction in alkaline water splitting.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Daochuan Jiang, Taotao Wang, Muqing Chen, Jinbao Wu, Pingwu Du
Summary: Accelerating charge separation and transfer and increasing visible light absorption are crucial for efficient photocatalytic hydrogen production via water splitting. In this study, we fabricated an in-plane graphited nanocarbon-conjugated polymeric carbon nitride (GNC-C3N4) nanosheet heterostructure photocatalyst for the first time. The incorporation of GNC into the conjugate network of C3N4 significantly enhanced light harvesting and improved charge separation and transfer through the built-in electric field and intimate interface. The optimized GNC-C3N4 photocatalyst exhibited over 15-fold enhancement in photocatalytic hydrogen evolution from water under visible light irradiation compared to C3N4.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Peijing Guo, Zhangyi Xiong, Shaoyu Yuan, Kaihong Xie, Haijun Wang, Yongjun Gao
Summary: In this study, a low-cost and environmentally friendly photocatalyst was developed using a simple calcination process with natural materials, achieving high hydrogen evolution rate. The hybrid structure of cobalt ingredients is essential for excellent photocatalytic performance, reducing the free energy for hydrogen adsorption and facilitating H2 production.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Hui Chen, Mingxia Li, Jinyu Gao, Decai Yang, Zhenzi Li, Haixia Liu, Ying Xie, Liping Guo, Wei Zhou
Summary: Surface and interface engineering are used to improve the photocatalytic hydrogen evolution. In this study, a Ni/ZnIn2S4 nanosheet assembly with sulfur vacancy and Schottky junction is fabricated, which shows high photocatalytic H-2 evolution rate and stability.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Zehao Zang, Xuewei Wang, Xiang Li, Qingling Zhao, Lanlan Li, Xiaojing Yang, Xiaofei Yu, Xinghua Zhang, Zunming Lu
Summary: This study presents a novel heterostructure catalyst Co9S8/Cu2S/CF with low overpotentials for water splitting. The strong interfacial interaction promotes water molecule dissociation, achieving efficient alkaline water splitting.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Chemical
He Li, Nathan Wells, Ben Chong, Baorong Xu, Jinjia Wei, Bolun Yang, Guidong Yang
Summary: Layered metal phosphorus trichalcogenides are being reconsidered as promising candidates for hydrogen evolution reaction photocatalysts due to their high tunability, with cadmium phosphorus trisulfide identified as a notable example. An N-doped CdPS3 nanosheet has been reported as a viable candidate for visible light hydrogen production, showing remarkable stability and comparable yield to other MPCh(3) photocatalysts. Insights into the electronic structure of this novel material are provided.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Ning Gao, Fengmei Wang, Jianwei Ding, Marshet G. Sendeku, Peng Yu, Xueying Zhan, Shuangfei Cai, Chunhui Xiao, Rong Yang, Jun He, Zhenxing Wang
Summary: In this study, a two-dimensional AuNP-in-PdNS electrocatalyst was designed to reduce CO2 to formate acid under a wide potential window, using Au nanoparticles intercalated in Pd nanosheets. The intercalated Au nanoparticles effectively prevented CO formation and promoted formate production on the surface of Pd nanosheets by regulating its electronic structure.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Physics, Applied
Zhaolou Sun, Peng Yu, Feng Wang, Fengmei Wang, Yuyu Yao, Xueying Zhan, Zhenxing Wang, Jun He
Summary: UV PDs based on In4/3P2Se6 nanoflakes exhibit high light switching ratio and ultrafast light response time, showing excellent performance in the field of UV PDs.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Peng Yu, Jun Meng, Fengmei Wang, Marshet Getaye Sendeku, Binglan Wu, Xinyu Sui, Ning Gao, Xueying Zhan, Xiaoding Lou, Zhenxing Wang, Jun He
Summary: In this study, the use of carbonate ions as hole mediators in photocatalysis enables efficient charge separation and prevents photocorrosion. The accelerated hole transfer reduces the recombination of electron-hole pairs and improves the photostability of catalysts, resulting in sustainable and continuous H2 production. The carbonate-ion-mediated hole-transfer strategy provides a new paradigm for designing cost-effective and advanced photosynthetic systems in practical applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Engineering, Environmental
Tianshui Li, Xiuping Zhao, Marshet Getaye Sendeku, Xingheng Zhang, Ling Xu, Zhaolei Wang, Shiyuan Wang, Xinxuan Duan, Hai Liu, Wei Liu, Daojin Zhou, Haijun Xu, Yun Kuang, Xiaoming Sun
Summary: This work presents phosphate-decorated Ni3Fe-layered double hydroxides grown on cobalt phosphide nanoarray as an electrode for direct seawater splitting. The electrode exhibits high intrinsic activity and 100% selectivity towards seawater oxidation in a near neutral electrolyte. The phosphate layer on the catalyst surface weakens the adsorption of Cl- and resists local pH changes, leading to prolonged stable seawater splitting.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Hai Liu, Guoying Tan, Mengxuan Li, Zhuang Zhang, Marshet Getaye Sendeku, Yaping Li, Yun Kuang, Xiaoming Sun
Summary: Hydrogen evolution reaction (HER) is a crucial reaction in the electrocatalytic water splitting process, which enables the storage of renewable energy as hydrogen fuel. However, high current densities required for grid-scale water splitting can lead to changes in local pH on the electrode surface, posing stability risks for cathodic catalysts. In this study, a single atomic Ru-doped WO3 catalyst was developed, exhibiting excellent HER activity with low overpotentials of 28.0, 17.6, and 83.0 mV in acidic, alkaline, and neutral media, respectively. The catalyst also demonstrated robust stability for 100 hours at ampere-level current density. Synchrotron radiation and density functional theory (DFT) calculations revealed that defective oxygen and strong electron transfer from W sites to Ru contributed to the catalyst's superior HER activity and stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Inorganic & Nuclear
Mohamed Bahri, Shushay Hagos Gebre, Mohamed Amin Elaguech, Fekadu Tsegaye Dajan, Marshet Getaye Sendeku, Chaker Tlili, Deqiang Wang
Summary: Graphene, with its high carrier mobility, thermal conductivity, optical transparency, and mechanical flexibility, is expected to find applications in environmental remediation, energy harvesting and storage, and medical gadgets. Chemical vapor deposition (CVD) is a promising method for synthesizing large-area graphene, and this review focuses on the design principles and applications of CVD techniques based on different conditions. The review also discusses recent advances and challenges in the growth of high-quality graphene for energy harvesting, environmental remediation, and health-related applications.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Fekadu Tsegaye Dajan, Marshet Getaye Sendeku, Binglan Wu, Ning Gao, Eyaya Fekadie Anley, Jing Tai, Xueying Zhan, Zhenxing Wang, Fengmei Wang, Jun He
Summary: In this work, researchers introduced Ce atom into the amorphous iron oxyhydroxide nanosheet to improve the electrocatalytic activity and stability for oxygen evolution reaction (OER). The CeFeOxHy electrode showed low overpotential and small Tafel slope at a current density of 100 mA cm(-2), and it can work continuously for over 300 hours. This study provides a design strategy for highly active, low-cost, and durable materials by interfacing high valent metals with earth-abundant oxides/hydroxides.
Article
Multidisciplinary Sciences
Zhaolei Wang, Wenhai Xu, Guoying Tan, Xinxuan Duan, Bichen Yuan, Marshet Getaye Sendeku, Hai Liu, Tianshui Li, Fengmei Wang, Yun Kuang, Xiaoming Sun
Summary: Electrocatalytic two-electron water oxidation with titanium dioxide containing single atoms of Ru was used for efficient production of H2O2. The introduction of Ru single atoms allowed tuning the adsorption energy of OH intermediates, resulting in superior H2O2 production under high current density. A Faradaic efficiency of 62.8% and an H2O2 production rate of 24.2 lmol min-1 cm-2 (>400 ppm within 10 min) were achieved at a current density of 120 mA cm-2. This study demonstrates the possibility of high-yield H2O2 production under high current density and highlights the importance of regulating intermediate adsorption in electrocatalysis.
Article
Chemistry, Physical
Hai Liu, Zhuang Zhang, Jinjie Fang, Mengxuan Li, Marshet Getaye Sendeku, Xian Wang, Haoyang Wu, Yaping Li, Junjie Ge, Zhongbin Zhuang, Daojin Zhou, Yun Kuang, Xiaoming Sun
Summary: In this study, an insoluble niobium-incorporated ruthenium oxide catalyst was designed as an iridium-free anode catalyst for proton exchange membrane water electrolysis. The catalyst exhibited a low overpotential and superb stability, with enhanced oxygen intermediate adsorption and electron transfer mechanisms. This research shows promising potential for high-performance and long-lasting PEM water electrolysis systems.
Article
Chemistry, Multidisciplinary
Lei Yin, Ruiqing Cheng, Shurong Pan, Wenqi Xiong, Sheng Chang, Baoxing Zhai, Yao Wen, Yuchen Cai, Yuzheng Guo, Marshet Getaye Sendeku, Jian Jiang, Weitu Liao, Zhenxing Wang, Jun He
Summary: This study reports the scalable atomic-scale patterning in 2D superionic cuprous telluride and demonstrates controllable piezoelectricity-like multilevel switching and bipolar switching, as well as their application in image enhancement. The research expands the known classes of patternable crystals and atomic switching devices, and opens up a new frontier for image processing with memristors.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jinwen Yu, Kadi Hu, Zhengyi Zhang, Liang Luo, Yiwei Liu, Daojin Zhou, Fengmei Wang, Yun Kuang, Haijun Xu, Hui Li, Haohong Duan, Xiaoming Sun
Summary: Bubble evolution in electrolysis, commonly originating from nanobubbles (NBs), usually gives rise to the extra overpotential due to a high internal pressure generated in these ultrasmall sized bubbles. The study on the growth of interfacial NBs is crucial, but nanobubble evolution during electrolysis is still vague. Herein, we employ the in situ electrochemical surface plasmon resonance imaging method, combined with atomic force microscopy measurement, to visualize the formation and growth of interfacial NBs during the initial stage of the hydrogen evolution reaction. We find that NB growth originates from pancake shaped ones, followed by increasing the coverage and roughly pinned three-phase boundaries, increasing the contact angle and height; but the coverage remains almost unchanged after reaching the equilibrium state. Further increasing the overpotential leads to the increase of the NB curvature (potential shift), as well as a higher gas outflux rate, namely, higher background current. As confirmed by molecular dynamics simulations, the pin-rise growth mode and the quantitative influence of NBs on the electrochemical performance have been revealed.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Binglan Wu, Xueying Zhan, Peng Yu, Jun Meng, Marshet Getaye Sendeku, Fekadu Tsegaye Dajan, Ning Gao, Wenjia Lai, Ying Yang, Zhenxing Wang, Fengmei Wang
Summary: A novel In4/3P2Se6 nanosheet photocatalyst was synthesized and found to exhibit high yield and selectivity for the simultaneous production of hydrogen gas and N-benzylidenebenzylamine in water and acetonitrile solvents.
Review
Chemistry, Applied
Shushay Hagos Gebre, Marshet Getaye Sendeku
Summary: The advancement of nanotechnology has led to the realization of new multi-metallic nanostructures, which exhibit improved performance in catalytic applications. Trimetallic nanostructures with synergistic combination of three different metals show unique physiochemical properties and demonstrate better performance and durability in electrocatalytic fuel cells.
JOURNAL OF ENERGY CHEMISTRY
(2022)
