Article
Chemistry, Multidisciplinary
Zongyang Ya, Xinyu Jiang, Peng Wang, Jingjin Cai, Qiyou Wang, Haijiao Xie, Shanglin Xiang, Tingwei Wang, Dongyu Cai
Summary: This work presents a novel tubular g-C3N4 with a hierarchical core-shell structure achieved through the incorporation of phosphorous elements and nitrogen vacancies. The core is composed of randomly stacked ultra-thin nanosheets, enabling efficient electron/hole separation and visible-light absorption. This photocatalyst demonstrates outstanding performance in the photodegradation of rhodamine B and tetracycline hydrochloride under low intensity visible light, as well as remarkable hydrogen evolution rate under visible light. The introduction of phytic acid into the melamine and urea solution during hydrothermal treatment leads to the formation of this hierarchical structure, offering a facile and scalable approach for mass production.
Article
Energy & Fuels
Hui Peng, Zipeng Xing, Weifeng Kong, Chunxu Wu, Bin Fang, Yongqian Cui, Zhenzi Li, Haixia Liu, Wei Zhou
Summary: Ternary plasmon Ag/CuInS2/BiVO4 S-scheme core-shell heterostructures with decahedral morphology were synthesized using hydrothermal, solvothermal, and photodeposition strategies. The combination of these strategies increased the specific surface area and provided sufficient surface-active spots for the photocatalytic reaction. Under visible light irradiation, the photocatalytic degradation rate of plasmon Ag/CuInS2/BiVO4 for Bisphenol A in water was up to 98.8%, with a hydrogen yield of 6.493 mmol h-1, several times higher than that of pristine ones. The quantum efficiency at 420 nm light was 11.3%. Meanwhile, it exhibited a strong inhibitory effect on Escherichia coli and Staphylococcus aureus in water due to the unique broad-spectrum bactericidal effect of Ag nanoparticles and the bactericidal effect of reactive oxygen radicals. The robust photocatalytic performance can be attributed to the particular S-scheme core-shell heterojunction favoring spatial charge separation, the surface plasmon resonance of Ag nanoparticles extending long wavelength light response, and obvious photothermal effect. This study presents a new tactic for manufacturing efficient S-scheme heterojunction photocatalysts for solar energy conversion.
Article
Environmental Sciences
Ch. Venkata Reddy, Aashna Nagar, Nagaraj P. Shetti, I. Neelakanta Reddy, Soumen Basu, Jaesool Shim, Raghava Reddy Kakarla
Summary: In this study, novel g-C3N4/BiVO4 nanohybrid catalysts were prepared and characterized. The composite catalyst exhibited enhanced photocatalytic degradation efficiency of methylene blue and tetracycline pollutants.
Article
Chemistry, Physical
Wenjian Fang, Yang Yang, Junying Liu, Qihong Lu, Jiawei Yan, Wenfeng Shangguan
Summary: The self-assembled core-shell BixY1-xVO4@g-C3N4 (BYVO@PCN) photocatalyst was synthesized by in-situ polycondensation of melamine on the surface of BixY1-xVO4, forming a core-shell structure. The excessive unpaired O atoms on the surface of BYVO played a key role in the formation of the core-shell structure by absorbing intermediate products of polycondensation. Furthermore, BYVO@PCN achieved photocatalytic pure water splitting into H2 and O2 at a rate about 5 times higher than BixY1-xVO4, and solved the problem of low O2 evolution in pure water splitting by PCN. Additionally, BYVO@PCN formed an S-scheme heterojunction, significantly enhancing the separation of charge carriers.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Huijun Yu, Shasha Xu, Shijie Zhang, Shuguang Wang, Zuoli He
Summary: The study successfully constructed a core-shell structured TiB2TiO2@g-C3N4 heterojunction photocatalyst, which exhibited better photodegradation performance for organic pollutants RhB and 4-CP compared to pure g-C3N4. By building 'TiB2 bridges' on the surface of TiB2-TiO2 cores and a Z-scheme heterojunction with g-C3N4, fast electronic transmission channels were formed and recombination of photogenerated charges was effectively inhibited.
APPLIED SURFACE SCIENCE
(2022)
Article
Food Science & Technology
Xingguang Chen, Beibei Chu, Qianhui Gu, Wenzhe Li, Rui Lin, Jiyang Chu, Zhengcong Peng, Jian Lu, Dianhui Wu
Summary: A protonated g-C3N4/oxygen-doped g-C3N4 composite was prepared and used to inhibit F. graminearum growth and DON accumulation in barley malt under visible light irradiation. The results showed that the inhibition rate of F. graminearum reached 100% after 2.5 h of visible light irradiation. The CNH/OCN composite material also had a significant photocatalytic inhibition effect on ergosterol and DON in malt.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Chemistry, Physical
Youmei Li, Chengxu Lai, Junbo Zhong, Jianzhang Li
Summary: Graphitic carbon nitrides (g-C3N4) have attracted researchers' attention for their special 2D laminar structure, competitive price, non-toxicity, suitable bandgap, and acceptable consistency. However, the practical application of g-C3N4 is still limited due to its low specific surface area and fast recombination of photo-generated charge pairs. In this study, Eu-doped g-C3N4 (Eu/CN) catalysts with different Eu/g-C3N4 ratios were synthesized and characterized, showing excellent H-2 generation capacity and stability under solar light. Eu doping widened the bandgap, changed the molecular structure, and formed more nitrogen defects in g-C3N4, leading to improved photocatalytic efficiency by inhibiting the recombination of photoinduced carriers. This study provides valuable insights for using rare earth metals to enhance the separation and transfer rate of photo-induced electrons and holes over g-C3N4.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Sciences
Mai S. A. Hussien, Ibrahim S. Yahia
Summary: The translation focuses on the fabrication and characterization of a nanostructured multifunctional photocatalytic based on core/shell g-C3N4@TiO2 heterojunction using pyrolysis of melamine. The study demonstrates the superior photocatalytic performance of g-C3N4@TiO2 photocatalysts and discusses the mechanism of photodegradation of methylene blue and amoxicillin, showing a significant increase in degradation rate compared to g-C3N4 under simulated solar irradiation, indicating potential applications in the treatment of pharmaceutical and dye contaminants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Priti Rohilla, Bonamali Pal, Raj Kumar Das
Summary: Photocatalytic degradation of toxic dyes in wastewater can be efficiently achieved using graphitic nitride (g-C3N4) loaded BiVO4 nanocomposites. The 10 wt% g-C3N4@BiVO4 hybrid exhibits the highest catalytic activity and stability, making it a promising catalyst for pollutant degradation.
Article
Nanoscience & Nanotechnology
Kaiyan Wang, Min Wang, Jingchao Yu, Dan Liao, Haiyang Shi, Xuefei Wang, Huogen Yu
Summary: The study developed a CupAu core-shell nanostructured cocatalyst to modify the BiVO4 photocatalyst, addressing the limitation of H2O2 production performance in Au/BiVO4 photocatalyst and achieving significant enhancement in photocatalytic performance.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Haiyang Shi, Yang Li, Xuefei Wang, Huogen Yu, Jiaguo Yu
Summary: In this study, a BiVO4 single crystal with selective comodification of ultra-thin g-C3N4 and Au was prepared for the first time to improve H2O2 production efficiency, achieving excellent performance in H2O2 production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Shuang Liang, Guozhe Sui, Dongxuan Guo, Ze Luo, Rongping Xu, Hong Yao, Jinlong Li, Chao Wang
Summary: Developing efficient heterojunctions with enhanced photocatalytic properties is a promising strategy for photocatalytic hydrogen production. In this study, graphitic carbon nitride-wrapped nickel-doped zinc oxide/carbon core-double shell heterojunctions were utilized as efficient photocatalysts through an innovative approach. The introduction of Ni doping enhances visible light absorption, while the core-double shell structure improves charge transfer rate and photon utilization efficiency. The constructed Z-scheme heterojunction facilitates electron-hole pair transport, and experimental results confirm the Z-scheme charge-transfer mechanism. The obtained photocatalyst exhibits a significantly higher hydrogen evolution rate compared to pristine ZnO. This work provides a pathway for the development of highly efficient photocatalysts with unique core-double shell structures.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Jiaqi Dong, Zhengqi Gong, Yingzhi Chen, Guodong Hao, Wenjie Zhou, Jiaxin Li, Mingqiang Yang, Rongsheng Deng, Lu-Ning Wang
Summary: It is reported a facile preparation of hierarchically porous g-C3N4 with uniform organic microstructure as a soft template. The in situ formed template in thiourea precursor solution effectively modifies the condensation of g-C3N4. The resulting g-C3N4 possesses hierarchical meso/macropores with higher surface area and pore volume, resulting in a 2.4-fold enhancement in photodegrading organic pollutant.
SCIENCE CHINA-MATERIALS
(2023)
Article
Engineering, Environmental
Feiyan Lu, Kao Chen, Qingge Feng, Huidong Cai, Dachao Ma, Dongbo Wang, Xiang Li, Chen Zuo, Sinan Wang
Summary: The study focuses on the synthesis of TiO2-based materials for photocatalysis in water treatment, emphasizing the need to address issues related to catalyst separation and carrier recombination. The research introduces a novel magnetical core-shell Fe3O4@SiO2@Sn-TiO2 composite photocatalyst with enhanced performance in tetracycline hydrochloride degradation. Sn2+ doping increases TiO2 content, resulting in improved photocatalytic activity and recyclability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Haohui Gu, Feng Liang, Xiaohan Wang, Shuaibing Wu, Gongye Lv, Haijun Zhang, Shaowei Zhang, Lilin Lu, Zhijun Dong
Summary: The synthesis of NT@CN core/shell structure S-scheme heterojunction photocatalyst was achieved by uniformly growing graphitic carbon nitride (g-C3N4) on the surface of nitrogen-doped rutile TiO2 (NT) nanorods. The as-synthesized heterojunction with 55 wt% g-C3N4 showed the highest CO2 photoreduction activity (33.35 μmol g(-1) for CO) without additional cocatalysts or external sacrificial agents, which was 7.1 times higher than that of bare NT nanorods. This improvement was attributed to the large surface area and impactful S-scheme heterostructure, enabling sufficient visible-light harvesting ability, segregation and transformation of charge pairs, and enhanced redox ability of carriers. Furthermore, the NT@CN photocatalyst displayed excellent reusability and stability. This work provides a new foundation for designing and preparing rutile TiO2-based S-scheme heterojunctions with enhanced CO2 reduction performance.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)