Article
Engineering, Environmental
Selvaraj Seenivasan, Junhyeok Seo
Summary: This study demonstrates an active site optimization concept by redirecting destructive electrochemical reconstruction (ECR) towards a constructive path through the incorporation of iron ions, resulting in improved catalytic activity in the oxygen evolution reaction (OER).
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Hui-Qi Xie, Xuan Zheng, Qing-Yun Feng, Xiao-Ping Chen, Ze-Hua Zou, Qing-Xiang Wang, Jing Tang, Yi Li, Yun Ling
Summary: This study successfully synthesized Fe-based oxide composite nanoparticles with stable chemical states. The catalyst exhibited remarkable activity and selectivity in the nitrogen reduction reaction, with high faradaic efficiency and ammonia yield. Experimental characterization and theoretical calculations revealed the excellent charge transfer capability and the suppression of the competitive HER process by the catalyst.
Article
Chemistry, Multidisciplinary
Haiyan Huang, Tianyi Yang, Fang Sun, Zhaohui Liu, Qing Tang, Lingmei Liu, Yu Han, Jianfeng Huang
Summary: This study demonstrates that Pd(100)/SnO2 interfaces can significantly enhance the activity of formic acid oxidation (FAO), potentially making them suitable for use in direct formic acid fuel cells (DFAFCs). The Pd(100)/SnO2 nanocomposites obtained by a newly developed strategy show high activity due to lattice contraction, electron loss, and the presence of SnO2, which optimize intermediate binding and promote the elimination of the CO intermediate.
Article
Automation & Control Systems
Yan Sun, Yaxiong Zhang, Ning Ma, Yang Chen, Yiqiang You, Wei Li, Luteng Liu
Summary: Turbine blades of aero engines often require small-size and high depth-diameter ratio holes for film cooling. Existing methods have difficulty in rounding the sharp corners of film cooling holes with different spatial angles. In this study, an electrochemical machining (ECM) method based on insulated electrodes was proposed to round the sharp corners efficiently. The process parameters could be adjusted to control the size of the rounded corners. This method has potential applications in the field of aviation manufacturing.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Rokas Sazinas, Katja Li, Suzanne Z. Andersen, Mattia Saccoccio, Shaofeng Li, Jakob B. Pedersen, Jakob Kibsgaard, Peter C. K. Vesborg, Debasish Chakraborty, Ib Chorkendorff
Summary: In this study, the volatile degradation products in the tetrahydrofuran electrolyte of LiMEAS were qualitatively and quantitatively analyzed by adding different concentrations of oxygen. The results showed that the addition of optimal oxygen concentration can reduce the decomposition of products, improve the Faradaic efficiency and chemical stability of LiMEAS.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Engineering, Environmental
Hao Jiang, Lizhang Wang, Bai Gao, Yiran Li, Yadan Guo, Mengning Zhuo, Kaixuan Sun, Binyu Lu, Meiyu Jia, Xiaoxia Yu, Huidong Wang, Yongge Li
Summary: Utilizing OH- oxidation as a counter reaction to CO2 electroreduction can increase formate production rate and faradic efficiency. Alkaline anolyte helps stabilize catholyte pH, avoiding competitive hydrogen evolution reaction, and has the lowest power consumption compared to other anolytes.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Zaki N. Zahran, Eman A. Mohamed, Yuta Tsubonouchi, Manabu Ishizaki, Takanari Togashi, Masato Kurihara, Kenji Saito, Tatsuto Yui, Masayuki Yagi
Summary: Researchers have discovered a metal oxide film with excellent performance in the oxygen evolving reaction, achieving lower overpotentials and higher stability through synergistic coupling among ternary metal centers.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Jacob Wheaton, Steven Kmiec, Devon Schuler, Christopher Sorensen, Steve W. Martin
Summary: Thin-film glassy solid-state electrolyte ribbons of lithium metaphosphate were successfully prepared with identical structure and composition to bulk materials, showing stable electrochemical properties suitable for all-solid-state lithium batteries.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Gitanjali Pradhan, Yogesh Chandra Sharma
Summary: Glycerol carbonate is a trending value added chemical in various industries, with researchers focusing on its synthesis from glycerol as a by-product of biodiesel. The use of a highly efficient heterogeneous Mg/ZnO base catalyst for the transesterification of glycerol with dimethyl carbonate was successful in producing glycerol carbonate with high conversion rates.
Article
Chemistry, Physical
Shi He, Yufeng Chen, Mengdi Wang, Hanggai Nuomin, Peter Novello, Xueqian Li, Siyuan Zhu, Jie Liu
Summary: Ammonia is a promising hydrogen mediator that reduces the cost of hydrogen transportation, but improvements are needed for extracting hydrogen. Ammonia electrolysis is a convenient method for low-cost hydrogen production. Nickel-cobalt nitride nanosheets show high electrocatalytic activity for the ammonia oxidation reaction in non-aqueous solutions.
Article
Engineering, Chemical
Ying Quan, Qinfu Liu, Kuo Li, Hao Zhang, Liang Yuan
Summary: A novel and efficient electrochemical method was demonstrated for purifying natural coal graphite, with critical factors including the type of graphite anode, the electrolyte, and the applied voltage. The main purified products were found to be graphene mixed with graphite aggregates, with fewer structural defects post-purification. The addition of (NH4)2SO4 in the HF electrolyte reduced HF usage by over 50%, decreasing costs and environmental impact.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Jingjing Zhao, Fengyin Zhou, Hongya Wang, Shuaibo Gao, Dihua Wang, Huayi Yin
Summary: This research presents a straightforward and effective electrochemical method for the recovery of spent LiFePO4, which can convert LiFePO4 into FePO4 without using acids, release Li+ into Na2CO3 solution, and collect Li2CO3 in one step, with high leaching efficiency.
JOURNAL OF POWER SOURCES
(2023)
Article
Multidisciplinary Sciences
Chao Feng, Faze Wang, Zhi Liu, Mamiko Nakabayashi, Yequan Xiao, Qiugui Zeng, Jie Fu, Qianbao Wu, Chunhua Cui, Yifan Han, Naoya Shibata, Kazunari Domen, Ian D. Sharp, Yanbo Li
Summary: The study finds that cobalt can promote the self-healing of leached iron centers in borate-intercalated nickel-iron-cobalt oxyhydroxides, leading to the synthesis of an active borate-intercalated NiCoFe-LDH catalyst with self-healing ability under harsh OER conditions. The presence of both ferrous ions and borate ions in the electrolyte is crucial to the catalyst's self-healing, demonstrating its potential for integration into photoelectrochemical devices.
NATURE COMMUNICATIONS
(2021)
Article
Energy & Fuels
Yidan Ouyang, Bin Lei, Zhouqing Tan, Fen Hu, Zhao Wu, Jiaxue Wang, Yixuan Ma, Ran Zhang, Li Guo, Feifei Chen
Summary: Lignin waste can be upgraded into a catalyst with outstanding catalytic activity for transforming CO2 into high-value chemicals through the acid gradient grading method. The enriched COOH and Ar-OH groups in lignin contribute to the enhanced catalytic performance.
Article
Chemistry, Physical
Shi-jun Xie, Chun-Hua Zhen, Hai-wen Chen, De-quan Cao, Jing Zhang, Yao Zhou, Jun-Tao Li, Shi-Gang Sun
Summary: This study demonstrates the feasibility and advantages of charging the thermodynamically spontaneous galvanic replacement reaction for efficient hydrogen production from acidic or neutral seawater, addressing the issues of kinetic mismatch and high overpotential.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Business, Finance
Jiancheng Shen, John Griffith, Mohammad Najand, Licheng Sun
Summary: We examine the predictability of market emotions (fear, gloom, joy, optimism) on returns of S&P 500 Index and 10-year Treasury notes futures using VAR and TGARCH models. Our VAR models suggest that one of the four emotions (fear) has predictive power for stock index futures returns. Additionally, we find that joy and optimism measures of emotions influence Treasury futures market returns. Further analysis using a TGARCH model with an emotional sentiment measure (fear) reveals that fear significantly affects market returns and conditional volatility of futures markets.
JOURNAL OF BEHAVIORAL FINANCE
(2023)
Article
Chemistry, Multidisciplinary
Chen Wang, Panlong Zhai, Mingyue Xia, Wei Liu, Junfeng Gao, Licheng Sun, Jungang Hou
Summary: This study reports the reversible reconstruction behavior accompanied by copper dynamic evolution, leading to the formation of high-valent cobalt species in active sites during water-alkali electrolysis. The crucial roles of electronic structure evolution and oxygen-vacancy-site mechanism in catalyst activity are revealed through experimental and theoretical investigations.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Huimin Liu, Janis Timoshenko, Lichen Bai, Qinye Li, Martina Ruscher, Chenghua Sun, Beatriz Roldan Cuenya, Jingshan Luo
Summary: In this study, rhodium nanoflowers (Rh NFs) were designed as catalysts to reduce the overpotential required for electrocatalytic nitrate reduction to ammonia (NITRR), achieving efficient ammonia synthesis.
Article
Nanoscience & Nanotechnology
Sebastian Svanstrom, Alberto Garcia Fernandez, Tamara Sloboda, T. Jesper Jacobsson, Fuguo Zhang, Fredrik O. L. Johansson, Danilo Kuhn, Denis Ceolin, Jean -Pascal Rueff, Licheng Sun, Kerttu Aitola, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the band alignment and interfacial electric field variations of a fully functional lead halide perovskite solar cell structure under operating conditions were measured directly using hard X-ray photoelectron spectroscopy (HAXPES). The results showed that 70% of the photovoltage was generated at the back contact, with equal contributions from the hole transport material/gold interface and the perovskite/hole transport material interface.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Tianqi Liu, Shaoqi Zhan, Nannan Shen, Linqin Wang, Zoltan Szabo, Hao Yang, Marten S. G. Ahlquist, Licheng Sun
Summary: Inspired by biological systems, a Ru-based molecular water oxidation catalyst was designed to mimic enzymatic framework, utilizing a configurationally labile ligand that acts as both an electron donor and a proton acceptor. Through various analysis and calculations, it was demonstrated that the self-adaptive ligand enables fast catalytic kinetics with a turnover frequency comparable to natural photosynthesis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Rongmei Zhao, Peng Wang, Linqing Wang, Yuanju Zhao, Chenghao Ge, Licheng Sun, Lin Xie, Yong Hua
Summary: This study introduces an innovative approach using an in situ combined dual-hole transport layer with TIPS-Pn to improve the performance of perovskite solar cells (PSCs). The results show that this approach effectively extracts and transports hole carriers, resulting in a significant increase in the average power conversion efficiency of PSCs. Additionally, it improves the stability of PSCs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Dexin Chen, Yunxuan Ding, Xing Cao, Linqin Wang, Husileng Lee, Gaoxin Lin, Wenlong Li, Guoheng Ding, Licheng Sun
Summary: In this study, a bimetallic Ni-Cu electrocatalyst was developed to enhance the oxidation of 5-hydroxymethylfurfural (HMF) by passivating the oxygen evolution reaction (OER) process.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Electrochemistry
Seunghwa Lee, Lichen Bai, Jaehoon Jeong, David Stenzel, Simon Schweidler, Ben Breitung
Summary: High-entropy molybdates (HEMo) are electrochemically activated and used as oxygen evolution catalysts in alkaline media. The activated HEMo shows improved performance compared to the pristine HEMo, including lower overpotential and higher Tafel slope. The enhancement is likely due to the change in active sites and increased electrochemical surface area after activation. This study provides insights into the application of HEMo in electrocatalysis and the design of nanoparticles containing multiple cations, as well as the role of FeOOH as an active OER catalyst.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Zhuofeng Li, Linqin Wang, Tao Wang, Licheng Sun, Wenxing Yang
Summary: Developing alternative electrolysis techniques is crucial for advancing electrocatalysis. Recent studies have shown that pulse electrochemical CO2 reduction reaction (CO2RR) can improve the selectivity of CO2RR. This study reveals that pulse electrolysis improves the C(2+) selectivity of CO2RR through dynamic controls of the surface CuxO/Cu composition.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Weiyan Ni, Josephine Lederballe Meibom, Noor Ul Hassan, Miyeon Chang, You-Chiuan Chu, Anna Krammer, Songlan Sun, Yiwei Zheng, Lichen Bai, Wenchao Ma, Seunghwa Lee, Seongmin Jin, Jeremy S. Luterbacher, Andreas Schuler, Hao Ming Chen, William E. Mustain, Xile Hu
Summary: Hydroxide exchange membrane fuel cells (HEMFCs) are promising devices for energy conversion. Now, a porous nitrogen-doped carbon-supported PtRu catalyst for the hydrogen oxidation reaction is presented, consisting of Pt single atoms and PtRu nanoparticles that work synergistically. The catalyst enables a fuel cell that exceeds the US Department of Energy 2022 performance target.
Article
Chemistry, Inorganic & Nuclear
Zhixiang Zhou, Fengshou Yu, Yang You, Jiayu Zhan, Lu-Hua Zhang
Summary: By anchoring CoPc complex on an MXene support with different terminal groups (-F or -OH), the effect of the terminal groups on the performance of the electrochemical CO2 reduction reaction (ECRR) was systematically studied. The results showed that CoPc/MXene-OH exhibited a higher faradaic efficiency for CO formation (FECO) of 92.4% compared to CoPc/MXene-F (84.0%) under the same conditions. Mechanistic exploration indicated that the excellent performance was attributed to the electron-donating property of -OH, which enriched the electron density of Co and optimized the binding strength for intermediates.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Tong Yao, Lu-Hua Zhang, Jiayu Zhan, Zhixiang Zhou, Yang You, Zisheng Zhang, Fengshou Yu
Summary: In this study, a facile strategy was reported for constructing hybrid coordination configurations by combining functionalized graphene quantum dots (GQDs) with CoPc (CoPc/R-GQDs) for electrochemical CO2 reduction. The CoPc/NH2-GQDs achieved high faradaic efficiency for CO formation (FECO) and wide potential range. This work presents a novel approach for catalyst design and can be applied to other electrochemical reactions.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Qixian Xie, Dan Ren, Lichen Bai, Rile Ge, Wenhui Zhou, Lu Bai, Wei Xie, Junhu Wang, Michael Graetzel, Jingshan Luo
Summary: Nickel iron layered double hydroxide (NiFe LDH) is an excellent catalyst for oxygen evolution reaction (OER) in alkaline electrolytes, but it performs poorly in neutral electrolytes. This study used electrochemical measurements, operando surface enhanced Raman spectroscopy, and operando 57Fe Mossbauer spectroscopy to investigate the mechanism of NiFe LDH for OER in different pH electrolytes. The results showed that the rate-determining step (RDS) of OER on NiFe LDH is different in alkaline and neutral conditions, indicating the importance of pH in the OER mechanism.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Green & Sustainable Science & Technology
Guoheng Ding, Husileng Lee, Zhiheng Li, Jian Du, Linqin Wang, Dexin Chen, Licheng Sun
Summary: Ni2Fe8/Ni3S2/NF catalyst is fabricated on nickel foam by a simple one-pot hydrothermal reaction, exhibiting high current densities at low overpotential and outperforming noble metal-based catalysts. Coupled with Ni4Mo/MoO2/NF, the AEM-WE device shows high performance and durability, making the catalyst highly efficient and robust.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Chemistry, Physical
Seunghwa Lee, You-Chiuan Chu, Lichen Bai, Hao Ming Chen, Xile Hu
Summary: This study investigates the mechanism of the oxygen evolution reaction (OER) on Ni(OH)2 nanosheets, a widely used OER catalyst, using multiple operando spectroscopic tools. The spectroscopic data reveals the formation of two intermediates, Ni(III)-O∙ and Ni-OO-Ni, during the OER process. Ni-OO-Ni, a side-on superoxide, acts as a site for hole accumulation and drives the rate-determining step of the reaction. These findings provide new insights into the mechanism of Ni-based OER catalysts.
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
