Article
Chemistry, Multidisciplinary
Yan Zhang, Hulin Shi, Shuyi Zhao, Zhulei Chen, Yiyi Zheng, Gaomei Tu, Shuxian Zhong, Yuling Zhao, Song Bai
Summary: This study demonstrates the construction of a hollow plasmonic p-metal-n S-scheme heterojunction photoreactor with dual noble-metal-free cocatalysts for solar-to-chemical energy conversion. The design incorporates plasmonic Au and Fe(OH)(x) and Ti3C2 cocatalysts to accelerate charge transfer and recombination, generate hot electrons and holes, and enhance redox reactions. The optimized design results in significantly enhanced activity and selectivity in CH4 production.
Article
Optics
Yunliang Ren, Caiqing Luo, Ibrahim Sitiwaldi
Summary: We investigate Schwinger pair production in combined electric fields using quantum field theoretical simulations, where static and oscillating electric fields are finitely extended and spatially separated. We find that the pair production can be dynamically assisted until the two fields are separated much farther than one Compton length. We show the signature of dynamical assistance, based on the position-based production rate, in the position of both static and oscillating fields. Moreover, we investigate the impact of spatial width on dynamical assistance and show that the production rate is suppressed when the width of either field exceeds one Compton length and the potential heights are constant.
Article
Chemistry, Physical
Lijun Zhang, Xudong Jiang, Zhiliang Jin, Noritatsu Tsubaki
Summary: Inspired by natural photosynthesis, the development of high-efficiency and low-energy hydrogen production catalysts is crucial for mitigating environmental issues. This study focuses on the synthesis of CdS-MoS2 dumbbell structure and the construction of CdS-In2O3 S-scheme heterojunction, enabling directed transfer of photogenerated electrons and efficient separation of electron-hole pairs. The catalytic activity of the semiconductor photocatalysts is significantly enhanced. This work provides an effective strategy for designing metal sulfide-based photocatalysts with high activity and stability in water-splitting.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Engineering, Environmental
Xinxin Lu, Weijian Chen, Yin Yao, Xiaoming Wen, Judy N. Hart, Constantine Tsounis, Cui Ying Toe, Jason Scott, Yun Hau Ng
Summary: A series of MoS2-loaded CdS nanorods have been fabricated, with MoS2 spatially distributed on the tips or both tips and walls of the CdS NRs. The presence of a spatial electric field between CdS NRs and MoS2 tips strongly induces photogenerated electron-hole separation and electron transfer. MoS2 located on the tips of CdS NRs can better separate electron-hole pairs and suppress charge recombination, leading to superior photoactivity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Chrysanthi Patriarchea, Ioannis Vamvasakis, Eirini D. Koutsouroubi, Gerasimos S. Armatas
Summary: Modulating heterojunction interfaces at the nanoscale is crucial for developing efficient photocatalysts. The mesoporous heterojunction architectures made of MoS2 nanolayers and CdS nanocrystals showed high efficiency in solar energy to chemical fuel conversion, with a remarkable enhancement in photocatalytic hydrogen production activity. The optimized MoS2/CdS catalyst achieved a H2 production rate of up to 0.4 mmol h(-1) with 51.2% apparent quantum yield, demonstrating a 6.7x enhancement in H2 generation efficiency compared to unmodified CdS.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Energy & Fuels
Lianqing Yu, Xiang Li, Lijie Duan, Yaping Zhang, Haifeng Zhu
Summary: A composite photocatalyst consisting of cadmium sulfide dewdrops on ultrathin strontium titanate branches with oxygen vacancies was successfully constructed. The oxygen vacancies acted as electron traps, while the CdS provided active sites for the hydrogen evolution reaction. The nanocomposite achieved a hydrogen production rate over 50 times higher than that of the single SrTiO3 and over 750 times higher than that of pure SrTiO3.
Article
Chemistry, Physical
Xiang Liu, Binfen Wang, Qianqian Heng, Wei Chen, Xiying Li, Liqun Mao, Wenfeng Shangguan
Summary: The construction of a ternary 3D interconnected nanocomposite Ti3C2/MoS2/CdS with closely interfacial contact has been successfully achieved. This composite material exhibits excellent photocatalytic H-2 evolution activity by accelerating electron transfer and inhibiting carrier recombination.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Zhong-Yue Huang, Fei Wang, Chanwon Jung, Siyuan Zhang, Fangqiu Zu, Chongjian Zhou, Yuan Yu
Summary: In this work, we demonstrate that Ag-decorated dislocations can facilitate the dissolution of dopants into the PbTe matrix at elevated temperatures to optimize the carrier concentration. These spatially aligned and chemically decorated dislocations strongly scatter medium-to low-frequency phonons, while maintaining a high carrier mobility. As a consequence, a maximum thermoelectric figure-of-merit, zT, of 1.5 at 750 K and an excellent average zT value of 1.1 between 300 and 800 K are obtained in Sb and dilute Ag2Te co-doped n-type PbTe. This work shows that decorated dislocation networks can optimize the electrical and thermal transport properties of thermoelectrics over a wide temperature range.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Jia-hui Sun, Bin Liu, Ding Liang, Meng -lei Zhu, Xiao-niu Peng, Xi-na Wang, Hui Yuan, Zhong-Jian Yang, Ya-lan Wang
Summary: This study investigates the enhancement of photocatalytic hydrogen production efficiency in water splitting by modulating the structure of nano materials. The addition of Au nanorods and MoS2 quantum dots significantly improves the photocatalytic activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Peng Wang, Jiafan Qu, Yadong Wei, Hongyan Shi, Jian Wang, Xiudong Sun, Weiqi Li, Wenjun Liu, Bo Gao
Summary: This study systematically investigates the residues from alkali metal compounds in CVD growth, revealing their role in inducing the spontaneous n-doping effect on monolayer MoS2. It is found that the doping level can be controlled by varying the amount of promoter used in the growth process.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Junqin Zhang, Xupeng Gong, Hao Zhang, Yintang Yang
Summary: This article proposes a p-i-n-type MoS2/Ge heterojunction photodetector based on multilayer MoS2, and explores its features using simulations. The results show a low dark current, high photocurrent, and good performance in terms of average responsivity and noise equivalent power in a wide spectral range.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Chemistry, Physical
Khadijeh Pournemati, Aziz Habibi-Yangjeh, Alireza Khataee
Summary: In this research, MnMoO4 and MoO3 nanoparticles were integrated with TiO2 particles to synthesize nanocomposites with tandem n-n heterojunctions. The synthesized photocatalyst exhibited superior efficiency in degrading TC, MB, MG, and RhB, due to enhanced charge generation, separation, and migration.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Applied
Ben Chong, He Li, Baorong Xu, Guidong Yang
Summary: In this study, a hollow double-shell stacked photocatalyst was constructed to enhance the photocatalytic performance through the loading of cocatalysts. The compact heterojunction structure between the double shells and the synergistic effect of the cocatalysts promoted the separation of electron-hole pairs and suppressed the reverse reaction. This work provides a new approach for designing unique structure and high-performance photocatalysts for photocatalytic water splitting.
Article
Chemistry, Physical
Qiuyan Shen, Tianyi Xu, Gui-lin Zhuang, Yuan Zhuang, Liming Sun, Xiguang Han, Xiaojun Wang, Wenwen Zhan
Summary: By engineering the composition and morphology of a semiconductor-based photocatalyst, the spatial separation of photoinduced charge carriers on a nanoscale was achieved, leading to enhanced photocatalytic activity in organic transformations.
Article
Nanoscience & Nanotechnology
Xiaoning Han, Peiting Wen, Li Zhang, Wei Gao, Hongyu Chen, Feng Gao, Shihao Zhang, Nengjie Huo, Bingsuo Zou, Jingbo Li
Summary: A novel p-Ta-n heterojunction photodetector with high anisotropic ratio and self-powered detection across a wide range of wavelengths has been designed and optimized, demonstrating excellent stability and photocurrent response.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Chemical
Chengxin Zhou, Chunping Jiang, Ruilin Wang, Jinwei Chen, Gang Wang
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Materials Science, Multidisciplinary
Haowei Yang, Jinlong Fan, Chengxin Zhou, Yingfei Wan, Jin Zhang, Jinwei Chen, Gang Wang, Ruilin Wang, Chunping Jiang
Article
Chemistry, Multidisciplinary
Haowei Yang, Jinlong Fan, Chengxin Zhou, Rui Luo, Hongwei Liu, Yingfei Wan, Jin Zhang, Jinwei Chen, Gang Wang, Ruilin Wang, Chunping Jiang
Article
Chemistry, Physical
Hongwei Liu, Haowei Yang, Jinlong Fan, Chengxin Zhou, Jin Zhang, Yingfei Wan, Zengjian Liu, Jinwei Chen, Gang Wang, Ruilin Wang
CHEMICAL PHYSICS LETTERS
(2020)
Article
Chemistry, Physical
Jinwei Chen, Zhenjie Li, Yihan Chen, Jie Zhang, Yan Luo, Gang Wang, Ruilin Wang
CHEMICAL PHYSICS LETTERS
(2020)
Article
Engineering, Chemical
Jinwei Chen, Meng Huang, Wang Chen, Haiyan Tang, Yi Jiao, Jie Zhang, Gang Wang, Ruilin Wang
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Energy & Fuels
Yan Luo, Jie Zhang, Jinwei Chen, Yihan Chen, Zhenjie Li, Junjie Shi, Gang Wang, Ruilin Wang
Article
Nanoscience & Nanotechnology
Jinwei Chen, Haiyan Tang, Meng Huang, Yong Yan, Jin Zhang, Honggang Liu, Jie Zhang, Gang Wang, Ruilin Wang
Summary: The thermodynamic stability of oxygen vacancy in catalytic oxidation of formaldehyde can be improved by nitrogen doping, leading to enhanced catalytic activity and stability of MnO2/C catalyst for HCHO oxidation. The nitrogen-doped MnO2/C catalyst can completely remove around 1 ppm of HCHO within 3 hours and remains highly active even after 5 cycles at room temperature, showing great potential for application in the field of HCHO oxidation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yihan Chen, Jinwei Chen, Jie Zhang, Yan Luo, Chenyang Zhang, Yali Xue, Gang Wang, Ruilin Wang
Summary: A Pt-MoO3/CNT-ALD catalyst with Pt nanoparticles supported on MoO3-modified carbon nanotubes via ALD technology shows significant improvements in catalytic activity and durability. The catalyst exhibits high activity for methanol oxidation and oxygen reduction reactions, along with excellent long-term stability. The enhanced performance is attributed to increased Pt-O bonds, optimized electronic structure, and strengthened MMOI.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Junsheng Luo, Jinqing Zhu, Fangyan Lin, Jianxing Xia, Hua Yang, Jinyu Yang, Ruilin Wang, Junyu Yuan, Zhongquan Wan, Ning Li, Christoph J. Brabec, Chunyang Jia
Summary: This study addresses the instability issue of Li-TFSI doping in perovskite solar cells and proposes a replacement, a fluorinated Fe(F20TPP)CI with hydrophobic property and high migration barrier. The optimized PSCs show high power conversion efficiency and long-term stability, meeting the demands of future photovoltaic applications.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Yihan Chen, Jinwei Chen, Jie Zhang, Yali Xue, Gang Wang, Ruilin Wang
Summary: This study proposes a novel Pt catalyst consisting of Pt nanoparticles on TiOx/C composites with abundant oxygen vacancies. The introduction of oxygen vacancies improves the dispersion and stability of Pt nanoparticles on the support, leading to enhanced catalytic activity and durability. Experimental results show that the catalyst retains a lower decay of maximum power density after 3000 accelerated durability test cycles compared to traditional Pt/C catalyst.
INORGANIC CHEMISTRY
(2022)
Article
Engineering, Chemical
Gang Li, Gang Wang, Shiguo Wei, Yan Yu, Xuesong Li, Jie Zhang, Jinwei Chen, Ruilin Wang
Summary: A sulfonated poly(ether ether ketone) (SPEEK) proton exchange membrane with side-chain grafted sulfamic acid (SA) was designed to enhance vanadium ion selectivity in vanadium redox flow batteries. Acid-base pairs and hydrogen bonds formed between the sulfonated side-chain grafted secondary amine (-NH-) group and the sulfonic (-SO3H) group inhibit the penetration of vanadium ions. The prepared SPEEK-SA-50 membrane showed high proton conductivity and significantly improved selectivity and efficiency compared to SPEEK and Nafion 212 membrane.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Weiyi Shi, Xinran Dong, Yan Luo, Ruilin Wang, Gang Wang, Jinwei Chen, Can Liu, Jie Zhang
Summary: In this study, a bifunctional activity-enhanced La(Ni-0.1)MnO3 perovskite decorated with N-doped carbon (NC) is developed by a B-site doping strategy. The resulting La(Ni-0.1)MnO3@NC catalyst possesses numerous benefits including unique morphology, controllable synthesis, high conductivity, bifunctional activity, and durability. The enhancement was attributed to the synergistic effect of N-doped porous carbon and [MnO6] with the incorporation of [NiO6], resulting in the regulated charge redistribution and disorder degree.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Yong Yan, Chenyang Zhang, Xin Deng, Jin Zhang, Yali Xue, Jie Zhang, Yingjian Luo, Fuwen Yang, Gang Wang, Ruilin Wang, Jinwei Chen
Summary: Water electrolysis is an environmentally friendly and sustainable method for hydrogen production. The design of the catalyst surface plays a crucial role in the oxygen evolution reaction (OER) during water electrolysis. In this study, a hydrogel consisting of poly(vinyl alcohol) (PVA) cross-linked with quaternized chitosan (HACC) was loaded on nickel foam (NF) to investigate the OER properties of iron (Fe) in organic molecules. The superhydrophilic Fe-HACC-PVA/NF exhibited excellent performance with a low overpotential and high stability, outperforming most Fe-based OER catalysts. This work demonstrates the effectiveness of introducing a superhydrophilic catalyst surface structure to enhance OER performance and provides a facile method for developing OER catalysts through the rational design of hydrophilic interface materials.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Chengxin Zhou, Chunping Jiang, Ruilin Wang, Jinwei Chen, Gang Wang
Summary: By regulating the reaction conditions, a Bi-0/BiOI(010)((+)/CdS((-)) structure was designed, which exhibited improved hydrogen evolution rate and photocatalytic activity. The electrostatic force promoted the formation of a p-n heterojunction between BiOI(010) and CdS((-)), facilitating electronic transport.
ACS APPLIED NANO MATERIALS
(2021)
