Article
Chemistry, Multidisciplinary
Hao Fei, Ruoqi Liu, Jian Wang, Ting Guo, Zhuangzhi Wu, Dezhi Wang, Fangyang Liu
Summary: Electrocatalytic nitrogen reduction reaction (NRR) using MoS2 with controlled S vacancies (MoS2-Vs) as the catalyst shows high activity and selectivity. The optimized catalyst (MoS2-7H) with a suitable S vacancy concentration (17.5%) exhibits excellent NRR performance with a high NH3 yield rate (66.74 μg/h-1mg-1 at -0.6 V) and selectivity (14.68% Faradic efficiency at -0.5 V). Mechanistic study reveals that the NRR activity is enhanced by S vacancy-strengthened N-2 adsorption and reduced reaction energy barrier, while the selectivity is improved by limiting H-2 desorption kinetics, distinguishing it from other reported MoS2-based catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Pengyan Wang, Tingting Wang, Rui Qin, Zonghua Pu, Chengtian Zhang, Jiawei Zhu, Ding Chen, Dong Feng, Zongkui Kou, Shichun Mu, John Wang
Summary: The swapping of catalytic active sites from cationic Ni to anionic S in a hierarchical structure has shown to significantly enhance the intrinsic activity of the hydrogen evolution reaction. The new catalyst exhibits superior performance with a doubling in the intrinsic activity and a twofold increased turnover frequency compared to its pure NiS2 counterpart. Additionally, the NiS2/NiS2-NiS electrode also demonstrates outstanding activity in the oxygen evolution reaction and overall water splitting.
ADVANCED ENERGY MATERIALS
(2022)
Article
Engineering, Environmental
Can Feng, Heng Zhang, Yi Ren, Mengfan Luo, Siying Yu, Zhaokun Xiong, Yang Liu, Peng Zhou, Bo Lai
Summary: Copper sulfide was found to enhance the degradation of organic pollutants in the zerovalent iron/hydrogen peroxide system by accelerating the dissolution of iron and the cycling of Fe(III)/Fe(II). The introduction of copper sulfide resulted in a sustainable and high-efficiency iron-based oxidation system for the removal of organic contaminants. This study provides insights into the promotion effects of copper sulfide on zerovalent iron dissolution and Fe(III)/Fe(II) cycling in zerovalent iron-based Fenton-like processes.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
S. Swathi, R. Yuvakkumar, P. Senthilkumar, G. Ravi, Dhayalan Velauthapillai
Summary: This study successfully synthesized pristine and cationic surfactant assisted tungsten sulfide for hydrogen evolution reaction. The cationic surfactant assisted tungsten sulfide showed high catalytic activity and stability, making it suitable for large-scale applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Jiayi Wang, Zhuangzhi Wu, Dezhi Wang
Summary: This study reports a phase engineering strategy for MoS2 to enhance the activity of NRR and improve the selectivity by optimizing active sites and enhancing N2 adsorption. The optimal MoS2/C-0.4 electrocatalyst shows a high ammonia yield rate and Faradaic efficiency, outperforming other MoS2-based electrocatalysts. This work provides insights into synchronizing catalytic activity and selectivity. Rating: 8/10.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Chemistry, Multidisciplinary
Samar Batool, Marcel Langer, Stephen Nagaraju Myakala, Magdalena Heiland, Dominik Eder, Carsten Streb, Alexey Cherevan
Summary: This review summarizes prominent examples of thiomolybdate-based electro- and photocatalysis and provides a comprehensive analysis of their reactivities under homogeneous and heterogenized conditions. The study examines the active sites of thiomolybdates relevant for the hydrogen evolution reaction and discusses the shift from solution-phase to surface-supported thiomolybdates with a focus on applications in electrocatalysis and photocatalysis.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yan Zang, Baopeng Yang, An Li, Chengan Liao, Gen Chen, Min Liu, Xiaohe Liu, Renzhi Ma, Ning Zhang
Summary: A heterojunction of cobalt sulfide and Mo2N is designed for efficient hydrogen evolution reactions in both acid and alkaline electrolytes. The Mo-S bonds formed at the interface result in considerably enhanced hydrogen evolution reaction activity. This study provides a feasible strategy for designing hetero-based electrocatalysts with a tuned highly active interface.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Hai-Jun Liu, Shuo Zhang, Yong-Ming Chai, Bin Dong
Summary: This work presents a synergistic ligand modulation plus Co doping strategy to enhance the catalytic activity and durability of 1T-MoS2 catalyst for hydrogen evolution reaction (HER). The results show that the expanded interlayer spacing of 1T-MoS2 promotes active site exposure and accelerates water dissociation, leading to excellent stability and low overpotential for alkaline HER. The formation of three-dimensional metal-organic constructs weakens the hybridization between Mo-3d and S-2p orbitals, making S-2p orbital more suitable for hybridization with H-1s orbital.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Yuan Rui, Shen Zhang, Xuerong Shi, Xing Zhang, Ruihu Wang, Xiaoju Li
Summary: This study demonstrates the use of Pd doping to improve the electronic structure of tungsten disulfide and fabricate a core-shell structured Pd-WS2/W3O catalyst for the hydrogen evolution reaction. The catalyst shows excellent electrocatalytic performance with low overpotential and superior stability in acidic electrolyte, surpassing the benchmark of Pt/C and setting a new standard for WS2-based electrocatalysts in the field.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Yaqian Dong, Zhi Fang, Weiyou Yang, Bin Tang, Qiao Liu
Summary: This study presents a facile strategy to fabricate amorphous cobalt/nickel sulfide nanoflake arrays as integrated bifunctional electrocatalysts for efficient water splitting. The obtained catalyst exhibits excellent activities for both the oxygen evolution reaction and the hydrogen evolution reaction in alkaline solution. As an anode and a cathode in an alkaline electrolyzer, this catalyst shows low cell voltage and high water splitting current.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Thanh-Tung Le, Xiao Liu, Peijun Xin, Qing Wang, Chunyan Gao, Ye Wu, Yong Jiang, Zhangjun Hu, Shoushuang Huang, Zhiwen Chen
Summary: In this study, phosphorus-doped Fe7S8 nanowires integrated within carbon were successfully synthesized, with a typical porous structure providing abundant active sites, leading to reduced overpotentials for hydrogen and oxygen evolution reactions. The doping of phosphorus effectively enhanced the electron density of Fe7S8 and weakened Fe-H bonding, resulting in a decrease of adsorption free energy barrier on active sites.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ashish Gaur, Vikas Pundir, Takahiro Maruyama, Chandan Bera, Vivek Bagchi
Summary: The activity-enhancement of a new-generation catalyst is achieved by the collegial approach among specific solids, which exploit the mutual coactions of these materials for HER applications. The formation of the NiWO4-NiO interface, designed and synthesized through a three-step method, leads to the formation of abundant heterointerfaces. This catalyst exhibits superior HER activity and stability in an alkaline electrolyte.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Qikang Wu, Yuqin Zhu, Jiahui Guo, Songrui Wang, Xueqing Feng, Zheng Chen
Summary: By doping oxygen, enriching sulfur, and controlling the ratio of thiourea to sodium molybdate, the number of active sites in molybdenum sulfide can be increased, thereby improving its catalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Narges Atrak, Ebrahim Tayyebi, Egill Skulason
Summary: Density functional theory calculations are employed to analyze the active sites for CO2 reduction reaction (CO2RR) on TiO2/RuO2 and SnO2/RuO2 alloys. The results show that bridge Ru-Ti and bridge Ti-Ti sites are the active sites for CO formation, while bridge Ru-Ru sites are favorable for formic acid formation. Additionally, substitution of Cu for one bridge Ru atom in a RuO2 overlayer on TiO2 significantly decreases the overpotential for CO and formic acid formation. The knowledge gained from these calculations can be useful for engineering the active sites in order to enhance the catalytic performance.
Article
Engineering, Environmental
Junhao Lin, Qinxiong Liao, Yaping Hu, Rui Ma, Chongwei Cui, Shichang Sun, Xiangli Liu
Summary: This study found that temperature is a key factor affecting the evolution of sulfur-containing compounds during sludge gasification in supercritical water, with the decomposition of organic sulfur playing a dominant role in the conversion process. The unstable structure of organic sulfur was identified as the main cause of an increase in hydrogen sulfide content. Additionally, the strong solubility and oxidation properties of supercritical water facilitated the conversion of sulfur-containing organic compounds into sulfate crystals, aiding in the simultaneous immobilization of sulfur and heavy metals.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jong-Pil Jeon, Yu Jin Kim, Se Hun Joo, Hyuk-Jun Noh, Sang Kyu Kwak, Jong-Beom Baek
Summary: In this study, four benzotrithiophene-based covalent organic frameworks (COFs) with different conjugations were designed and synthesized, and it was found that the degree of conjugation can tune the rate of photocatalytic hydrogen production. The electron affinity and charge trapping of the electron accepting units were identified as the main factors affecting the photocatalytic performance. This research provides important insights for designing efficient photocatalysts using covalent organic frameworks.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Rizky Gilang Kurniawan, Neha Karanwal, Jaeyong Park, Deepak Verma, Sang Kyu Kwak, Seok Ki Kim, Jaehoon Kim
Summary: A Ni-CoOx-Al2O3 catalyst was used to convert furfural to 1,5-pentanediol efficiently. The proximity between Ni-0 and oxygen-vacant CoOx sites facilitated hydrogen adsorption and spillover, enabling catalytic reactions. The catalyst showed high efficiency, low cost, and environmental friendliness.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2023)
Article
Chemistry, Physical
Hyo-Geun Kwon, Seung Min Lee, Jehyeon Ryu, Ju Hyun Park, Sang Kyu Kwak, Sang-Wook Kim
Summary: We demonstrated the phase transformation from colloidal Cs3Cu2Cl5 nanocrystals to CsMCl (M = Zn, Bi, Cd) through cation exchange reaction. Cs2ZnCl4, Cs3BiCl6, and CsCdCl3 were successfully synthesized, and the feasibility of phase transformations was confirmed by density functional theory calculations, showing their high thermodynamic stability. The reactivity difference between Zn, Bi, and Cd cations was demonstrated by adjusting reaction temperatures, and the interactions between Cl- and the three cations were considered using chemical softness calculations. Moreover, the thermodynamic stability, estimated by formation energy, played a role in the reactivity of each cation exchange reaction. The addition of Cu cations to Cs2ZnCl4, Cs3BiCl6, and CsCdCl3 solutions resulted in the formation of CsCu2Cl3 instead of Cs3Cu2Cl5, and transmission electron microscopy revealed that nanoparticles were involved in the formation process of CsCu2Cl3 particles.
CHEMISTRY OF MATERIALS
(2023)
Article
Electrochemistry
June Sung Lim, Jinjong Kim, Kug-Seung Lee, Young Jin Sa, Sang Hoon Joo
Summary: This study investigates the impacts of catalyst loading and metal center on the 2e(-) ORR activity and selectivity of M-N/C catalysts. It is found that meso-Co-N/C and meso-Ni-N/C catalysts exhibit the best 2e(-) ORR performance under acidic and alkaline electrolytes, respectively, at low catalyst loadings. However, the H2O2 production activity of meso-Co-N/C catalyst dramatically declines at high catalyst loadings, while the activity of meso-Ni-N/C catalyst is nearly insensitive to the catalyst loading.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Sang Eun Yoon, Yongjin Kim, Hyeongjun Kim, Hyo-Geun Kwon, Unjeong Kim, Sang Yeon Lee, Ju Hyun Park, Hyungtak Seo, Sang Kyu Kwak, Sang-Wook Kim, Jong H. Kim
Summary: The authors achieved metallic properties from semiconducting Cu-Fe-S colloidal nanocrystal (NC) solids through cation exchange method. By efficiently generating charge carriers onto a semiconducting Cu-S NC template via minimal Fe exchange, they realized an unprecedentedly high electrical conductivity. The obtained NC films exhibited metallic behaviour with high electrical conductivity, making them suitable for various optoelectronic devices.
Article
Chemistry, Multidisciplinary
Jun Yong Oh, Eunshil Choi, Batakrishna Jana, Eun Min Go, Eunji Jin, Seongeon Jin, Jinhyu Lee, Jong-hoon Bae, Gyeongseok Yang, Sang Kyu Kwak, Wonyoung Choe, Ja-Hyoung Ryu
Summary: In this study, protein corona-blocked Zr-6-based MOF (PCN-224) nanoparticles are used for targeted cancer therapy. The PCN-224 surface is precoated with GST-fused targetable affibody (GST-Afb) proteins to prevent unwanted interactions with external proteins. The effectiveness of the particles in inducing cell death in cancer cells is demonstrated both in vitro and in vivo using two different affibodies targeting HER2 and EGFR receptors. This study provides insights into regulating the protein-adhesive surface of MOF nanoparticles for the design of more effective targeted delivery systems.
Article
Engineering, Environmental
Myohwa Ko, June Sung Lim, Ji-Wook Jang, Sang Hoon Joo
Summary: Hydrogen peroxide (H2O2) is a valuable chemical used widely, but its current production methods are energy-intensive and environmentally unfriendly. The photoelectrochemical two-electron O2 reduction reaction (2e- ORR) and 2e- water oxidation reaction (2e- WOR) have emerged as promising alternatives to produce H2O2 in a bias-free, cost-effective, and environmentally benign manner. This Perspective reviews the photoelectrochemical routes to H2O2 production and its in situ application for valuable chemical synthesis, discussing design principles, benchmarking solar-to-chemical conversion efficiencies, and presenting future perspectives on this field.
ACS ES&T ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Sewon Park, Gayoung Choi, Hyeong Yong Lim, Kyung Moon Jung, Sang Kyu Kwak, Nam-Soon Choi
Summary: In this study, a multifunctional electrolyte additive called BTSPFA was developed to enhance the interfacial stability of graphite anodes and Ni-rich cathodes in Li-ion cells. BTSPFA eliminates corrosive HF molecules, promotes the formation of a polar CEI on the Ni-rich cathode, and suppresses the reduction of the electrolyte. The synergistic effect of BTSPFA effectively prevents TM leaching from the cathode and unwanted TM deposition on the anode. LiNi0.8Co0.1Mn0.1O2/graphite full cells with 1 wt % BTSPFA showed enhanced discharge capacity retention of 79.8% after 500 cycles at 1C and 45°C.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Minhyeok Kim, Se Hun Joo, Meihui Wang, Sergey G. Menabde, Da Luo, Sunghwan Jin, Hyeongjun Kim, Won Kyung Seong, Min Seok Jang, Sang Kyu Kwak, Sun Hwa Lee, Rodney S. Ruoff
Summary: This study presents an electrochemical method for functionalizing single-crystal graphene on copper foils. The transfer-free method enables precise and efficient functionalization of graphene. The study also compares the reactivity of graphene on different facets and explains the differences in reaction rates using work function measurements.
Article
Multidisciplinary Sciences
Jung-Hui Kim, Kyung Min Lee, Ji Won Kim, Seong Hyeon Kweon, Hyun-Seok Moon, Taeeun Yim, Sang Kyu Kwak, Sang-Young Lee
Summary: In this study, a new cationic semi-interpenetrating polymer network (c-IPN) binder is proposed to regulate electrostatic phenomena and improve the performance of high-capacity positive electrodes for Li metal batteries. The c-IPN binder suppresses crack evolution and improves the dispersion state of electrode components by surface charge-driven electrostatic repulsion and mechanical toughness. It also immobilizes anions of liquid electrolytes inside the electrodes via electrostatic attraction, facilitating Li+ conduction and forming stable cathode-electrolyte interphases.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Hyang Mi Lee, Yong Woo Kim, Eun Min Go, Chetan Revadekar, Kyu Hwan Choi, Yumi Cho, Sang Kyu Kwak, Bum Jun Park
Summary: Lee et al. design a like-charged colloidal model and characterize the Debye interaction for the first time at the water-oil interface. The Debye interaction plays an important role in self-assembling processes in materials.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Du San Baek, Hyeong Yong Lim, Jinjong Kim, Jinyoung Lee, June Sung Lim, Dayeon Kim, Jong Hoon Lee, Ji-Wook Jang, Sang Kyu Kwak, Sang Hoon Joo
Summary: The activity of Ru nanoparticles in the alkaline hydrogen evolution reaction is found to be size-dependent, with 1.38 nm nanoparticles showing the highest activity. The high activity of these nanoparticles is correlated with their abundance in edge sites.
Article
Chemistry, Physical
Hoai Thu Luong, Ja Won Kim, Jiyun Lee, Yi Young Kang, Yumi Cho, Jae-Won Ka, Sang Kyu Kwak, Ji-Hoon Lee
Summary: Artificial materials with negative dispersion play a crucial role in the development of geometric phase retarders, compensation films, and augmented reality. However, there is still a lack of reported negative dispersion materials and a clear understanding of the correlation between dispersion and molecular structure. In this study, new H-shaped reactive molecules with different structures were synthesized, demonstrating an early conversion from positive to negative dispersion. The experimental and theoretical investigations revealed that the molecular structure affects the dispersion of retardation through molecular orientation and refractive index dispersion.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2023)
Article
Chemistry, Physical
Hyungsu Jang, Hyeong Yong Lim, Chan Beom Park, Jongdeuk Seo, Jung Geon Son, Taehee Song, Jaehwi Lee, Yun Seop Shin, Jina Roe, Sang Kyu Kwak, Dong Suk Kim, Jin Young Kim
Summary: In this study, Zn metal powder and Zn2+ were introduced to reduce Sn oxidation and decrease the intrinsic defects and lattice strain of Sn-based perovskite films. This led to improved efficiency of the perovskite solar cell.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Ho Young Kim, Minki Jun, Sang Hoon Joo, Kwangyeol Lee
Summary: Intermetallic nanoarchitectures have shown great potential as efficient electrocatalysts for energy conversion reactions. By generating well-defined nanoarchitectures, the performance of intermetallic catalysts can be significantly enhanced. These nanoarchitectures possess high intrinsic activity due to their unique structural factors, such as controlled facets, surface defects, and nanoscale confinement effects. Notable examples of intermetallic nanoarchitectures include facet-controlled intermetallic nanocrystals and multidimensional nanomaterials.
ACS NANOSCIENCE AU
(2023)
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.