Article
Chemistry, Physical
Rui Jiang, Wenhao Li, Kaili Zhu, Wei Ye, Genping Zhu, Gan Jia, Fuchun Xu, Jun Wang, Ting Tao, Yikang Wang, Xianglong Kong, Xiaohong Wu, Shiyu Du, Peng Gao, Joseph S. Francisco
Summary: In this paper, a uniform beta-C3N4 layer is successfully prepared and coated on a TiO2 nanotube substrate via calcination treatment using ethylenediamine as the carbon nitride precursor. The TiO2/C3N4 composite material exhibits promising sunlight-driven overall water splitting ability, with N vacancy defects in beta-C3N4 serving as the active site for oxygen generation from water.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Yukari Yamazaki, Kohsuke Mori, Yasutaka Kuwahara, Hisayoshi Kobayashi, Hiromi Yamashita
Summary: The study revealed that the photocatalytic activity of rutile Pt/TiO2-x significantly increased with the reduction temperature, while the activity of anatase Pt/TiO2-x decreased and that of brookite Pt/TiO2-x remained unchanged. Electron-spin resonance analysis showed that rutile and brookite had similar defect sites after reduction, while anatase exhibited different resonance signals. The research demonstrated that the depth of inherent midgap states, depending on crystal phases, influences defect generation and subsequently impacts the photocatalytic performance of Pt/TiO2-x.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Environmental Sciences
Shanmugam Vignesh, Sharmila Chandrasekaran, Manickam Srinivasan, Radhakrishnan Anbarasan, Ramasamy Perumalsamy, Elangovan Arumugam, Mohd Shkir, H. Algarni, S. AlFaify
Summary: The g-C3N4/TiO2-CeO2 composite photocatalysts exhibit significantly improved photocatalytic performance, with a degradation efficiency of 97% for organic dyes, which is 6.1 to 2.6 times higher than traditional photocatalysts.
Article
Environmental Sciences
Vu Quang Hieu, Truong Chi Lam, Afrasyab Khan, Thu-Thao Thi Vo, Thanh-Quang Nguyen, Van Dat Doan, Dai Lam Tran, Van Thuan Le, Vy Anh Tran
Summary: The research utilized the titanium atom from Ti3C2 MXene to develop TiO2, forming a close heterostructure with semiconductors, while the high surface area of amorphous g-C3N4 contributed to light harvesting during photocatalytic activity. The optimized TTC-450 heterostructure demonstrated a higher H-2 generation efficiency compared to pure g-C3N4 and other samples.
Article
Biochemistry & Molecular Biology
Yanru Liu, Jingyun Mao, Yiwei Huang, Qingrong Qian, Yongjin Luo, Hun Xue, Songwei Yang
Summary: The Pt-chitosan-TiO2 charge transfer complex was synthesized and its photocatalytic activity under visible-light irradiation for H-2 production was evaluated. The optimal Pt-10%DD75-T200 showed a high H-2 generation rate. The excellent visible-light photocatalytic activity of Pt-chitosan-TiO2 was attributed to the CT complex formation between chitosan and TiO2.
Article
Chemistry, Physical
Abdullah M. Asiri, Adil Raza, Muhammd Khuram Shahzad, Waheed A. Adeosun, Sher Bahadar Khan, Khalid A. Alamry, Hadi M. Marwani, Maha M. AlOtaibi, Shaik M. Zakeeruddin, Michael Graetzel
Summary: This study investigates the effects of Pt nanoparticles and Fe3O4 clusters on the photocatalytic behaviors of g-C3N4 and their application in CO2 photoreduction to solar fuels. The results show that the combination of Pt and Fe3O4 significantly improves the yield rate and selectivity of CH4, while inhibiting H2 formation. The optimized Pt/Fe3O4/g-C3N4 heterostructure demonstrates a significantly enhanced CO and CH4 yield rates compared to pure g-C3N4, attributed to the synergistic effects of Pt, Fe3O4, and g-C3N4.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Han Van Dang, Yen Han Wang, Jeffrey C. S. Wu
Summary: Researchers fabricated a Pt/GaP-C3N4 photocatalyst for solar-driven photocatalytic seawater splitting, showing high photoactivity and stability in various solutions.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Han Van Dang, Yen Han Wang, Jeffrey C. S. Wu
Summary: This study demonstrated the high photoactivity of the Z-scheme photocatalyst PGTSR for splitting pure water and artificial seawater, achieving significant hydrogen/oxygen evolution rates without sacrificial agents under simulated sunlight. The separated H-2 evolution from O-2 through the photocatalytic artificial seawater splitting in a twin photoreactor also showed promising results.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Materials Science, Multidisciplinary
Yuxin Bai, Shasha Xu, Jing Chen, Xun Sun, Shan Zhao, Jingcai Chang, Zuoli He
Summary: Ternary heterojunction photocatalysts show improved reduction and oxidation properties for environmental and energy applications due to enhanced transport and separation of photogenerated electrons and holes. In this study, Ti3C2@TiO2/g-C3N4 photocatalyst with optimized carrier transport and separation was successfully synthesized using electrostatic self-assembly. The ternary heterostructured photocatalyst exhibited higher photocatalytic degradation performance for removing rhodamine B and 4-chlorophenol. The synergistic effect of heterojunction and Schottky barrier suppressed the recombination of the photogenerated electron-hole pairs, while the Ti3C2 served as an active site for adsorption and activation of organic pollutants.
Article
Environmental Sciences
M. Vijayan, Velu Manikandan, Chellakannu Rajkumar, Ashraf Atef Hatamleh, Bassam Khalid Alnafisi, G. Easwaran, Xinghui Liu, K. Sivakumar, Haekyoung Kim
Summary: In recent years, the use of dyes and nanoparticles has increased significantly, posing a serious health risk to ecosystems. This study fabricated TiO2 and g-C3N4 nanosheets through co-precipitation and thermal polymerization techniques, respectively. The g-CN-TiO2 nanocomposite with different weight percentages exhibited enhanced photocatalytic performance against methylene blue (MB) dye under UV-visible light illumination. The optimized g-CN-TiO2 nanocomposite (3:1) showed the highest catalytic efficiency due to the low amount of TiO2 nanoparticles deposited on g-CN nanosheets and the development of a Z-scheme system between TiO2 and g-CN.
Article
Chemistry, Physical
Qian Chen, Jianfeng Huang, Xiaoyi Li, Mengfan Niu, Koji Kajiyoshi, Yong Zhao, Zhiwen Cheng, Ting Liu, Liyun Cao, Liangliang Feng
Summary: A novel Ni/VN hetero-nanosheets are reported as precious metal-free co-catalyst for g-C3N4, and the electronic coupling between Ni and VN greatly promotes the photocatalytic hydrogen production activity of g-C3N4. The Ni/VN cocatalysts exhibit excellent photocatalytic activity with high hydrogen production rates and stability.
SURFACES AND INTERFACES
(2023)
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
Environmental Sciences
Sadia Faryad, Umair Azhar, Muhammad Bilal Tahir, Wahid Ali, Muhammad Arif, Muhammad Sagir
Summary: Green synthesis of nanoparticles using eco-friendly and biodegradable materials is an effective method to reduce the negative environmental impacts of traditional synthesis methods. In this research, Spinacia oleracea leaves were used as a boron source to produce a visible light active photo-catalyst. The photocatalytic performance of boron-doped g-C3N4/TiO2 nanocomposites was examined for methylene blue dye degradation in water, and it was found that the composites showed better performance than other synthesized catalysts and composites. The research demonstrates that boron-doped g-C3N4/TiO2 composites can be used as an ideal solution for treating polluted water using visible light as a source to activate photocatalysts.
Article
Chemistry, Physical
Induja M. Sundaram, Sivaprakash Kalimuthu, Gomathi P. Priya, Karthikeyan Sekar, Saravanan Rajendran
Summary: A novel hierarchical TiO2 spheroids decorated with g-C3N4 nanosheets has been synthesized for efficient solar-driven hydrogen evolution and water depollution photocatalyst. The as-prepared nanocomposite exhibits superior photocatalytic performance compared to pure TiO2 and g-C3N4, and provides new insights for constructing efficient catalysts for solar energy conversion, solar fuels, and other environmental applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yingying Qin, Jian Lu, Fanying Meng, Xinyu Lin, Yonghai Feng, Yongsheng Yan, Minjia Meng
Summary: By utilizing the design of 2D/2D Schottky-Ohmic junction, composite photocatalysts with outstanding photocatalytic performance were successfully prepared, leading to significant H-2 production. This remarkable enhancement of photocatalytic performance provides a successful paradigm for future research.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yanze Wei, Jiawei Wan, Jiangyan Wang, Xing Zhang, Ranbo Yu, Nailiang Yang, Dan Wang
Summary: La- and Rh-co-doped SrTiO3 (STO:La/Rh) hollow multishelled structures have expanded light absorption edge, improved light-harvesting capacity, and charge separation efficiency. When combined with BiVO4 nanosheets, a Z-scheme system enables stable overall water splitting under visible light and simulated sunlight, with a solar-to-hydrogen efficiency twice as high as nanoparticles.
Article
Chemistry, Multidisciplinary
Yafu Tang, Yuechao Yang, Shanmin Hou, Dongdong Cheng, Yuanyuan Yao, Shugang Zhang, Jiazhuo Xie, Xiaoqi Wang, Xiaoxiao Ma, Zhen Yu, Shan Li
Summary: The ecofriendly and multifunctional Fe-humic acid (HA) complex was successfully prepared using simply ball milling lignite with double-shelled Fe-N hollow mesoporous carbon microspheres (DS-Fe-NHC). The WHIF fertilizer obtained through this method showed higher stability of water-soluble HA and significantly promoted growth in peanuts by reducing iron deficiency symptoms. The results suggest a cost-effective and environmentally friendly solution for large-scale agriculture production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Wenqing Yao, Xian Jiang, Meng Li, Yulian Li, Yuanyuan Liu, Xun Zhan, Gengtao Fu, Yawen Tang
Summary: This study introduces a novel and efficient Pt-Ag DSNCs electrocatalyst with a double-shelled structure and optimized bimetallic chemical composition. The Pt-Ag DSNCs exhibit superior stability and specific activity for the electro-oxidation of methanol, showing potential for application in direct methanol fuel cells.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Materials Science, Multidisciplinary
Hao Zheng, Xiao Chen, Yun Yang, Lin Li, Chuan-Qi Feng, Shi-Quan Wang
Summary: The study successfully synthesized double-shelled Co3V2O8 hollow nanospheres using a simple method, showing excellent lithium storage performance. This structure can increase the contact area of the electrolyte/electrode interface, promote ion and electron diffusion, and slow down capacity loss.
Article
Chemistry, Analytical
Shuaijun Hao, Hong Wang, Ruisong Yang, Di Liu, Jiawei Wan, Xiaohua Liu, Qiang Zhang, Xinkuan Chen
Summary: Dandelion-like SiO2@SnO2/alpha-Fe2O3 hollow microspheres were successfully synthesized with mesoporous structure and catalytic effect, showing excellent sensitivity to acetone gas.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Fan Zhang, Zhi Li, Tong Cao, Kai Qin, Qunjie Xu, Haimei Liu, Yongyao Xia
Summary: This study presents multifunctional Ni2P hollow microspheres as sulfur host materials to overcome the shuttle effect caused by electrolyte-soluble polysulfides, enhancing the discharge capacity and cycle stability of lithium-sulfur batteries.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Haipeng Liu, Wen Lei, Zhaoming Tong, Keke Guan, Quanli Jia, Shaowei Zhang, Haijun Zhang
Summary: This paper investigates the application of double-shell hollow carbon fibers in lithium ion storage, which exhibits superior electrochemical performance and maintains high reversible capacity even after a large number of cycles. The unique structural advantages of DSHCFs facilitate the transport kinetics of lithium ions and electrons.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Qian Liang, Shuang Zhao, Zhongyu Li, Zhenyu Wu, Hong Shi, Hui Huang, Zhenhui Kang
Summary: The research demonstrates that Co/In2O3 nanotubes as a photocatalyst show excellent performance in the reduction of CO2, achieving efficient conversion in organic wastewater. By capturing and stabilizing photogenerated electrons, the Co nanoparticles on the Co/In2O3 double-shell heterostructure serve as the sites for CO2 reduction.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biophysics
Yang Zang, Rong Cao, Chenyang Zhang, Qin Xu, Zhanjun Yang, Huaiguo Xue, Yizhong Shen
Summary: The novel photoelectrochemical immunosensor effectively monitored CEA by utilizing TiO2 NPs and DS-ZnCdS hollow nanospheres for improved photoelectric conversion efficiency, along with HCR-mediated signal cascade for enhanced detection sensitivity. The immunosensor demonstrated a desirable linear range, low detection limit, excellent selectivity, stability, and feasibility in early clinical diagnosis, making it a promising tool for CEA detection.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Engineering, Environmental
Yan Zhou, Zixin Jia, Siyuan Zhao, Peng Chen, Youning Wang, Tong Guo, Liyuan Wei, Xiangmei Cui, Xiaoping Ouyang, Xin Wang, Junwu Zhu, Jingwen Sun, Shugang Pan, Yongsheng Fu
Summary: Designing novel electrode materials with controlled structure and composition is challenging, but a triple-shelled hollow nanostructure has been successfully designed here, showing improved electrochemical activity, fast electronic/ion transport, mechanical stability, and enhanced charge storage. This electrode material delivers high specific capacity and outstanding cyclic stability, leading to a long cycle life and high energy density in all-solid-state hybrid supercapacitors.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Yongqiang Ren, Xiuyan Li, Yinan Wang, Qinghua Gong, Shaonan Gu, Tingting Gao, Xuefeng Sun, Guowei Zhou
Summary: Hollow ternary metal oxides, such as Mo-doped NiCo2O4 porous spheres with yolk-shell structure, show promising potential in LIBs due to their intricate composition and ample active defect sites. The porous core with unique pores of about 85 nm in diameter contributes to enhanced electrolyte infiltration and efficient transmission of Li+ and e(-), resulting in outstanding electrochemical performance with high reversible capacity, satisfactory cycle life, and exceptional rate capability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Neng-Fei Yu, Wen Huang, Kai-Lin Bao, Hui Chen, Kai Hu, Yi Zhang, Qing-Hong Huang, Yusong Zhu, Yu-Ping Wu
Summary: The study demonstrated a highly efficient bifunctional oxygen electrocatalyst with excellent reactivity and cycling stability. The double-shelled nanocages not only provide more reaction sites, but also enhance the transport environment for reactants, improving the catalyst's activity.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Akbar Mohammadi Zardkhoshoui, Bahareh Ameri, Saied Saeed Hosseiny Davarani
Summary: Mixed metal selenides have attractive structural characteristics and unique physicochemical properties, making them promising electrode materials for energy storage devices. Multi-shelled nickel-manganese selenide hollow spheres and double-shell nickel-iron selenide hollow spheres were successfully fabricated for supercapacitors, demonstrating excellent electrochemical performance and desirable longevity.
Review
Chemistry, Multidisciplinary
Zijian Wang, Jian Qi, Nailiang Yang, Ranbo Yu, Dan Wang
Summary: Three factors in designing an excellent heterogeneous tandem catalyst include sequencing, proximity, and compatibility, which can be achieved by changing the packing style or designing the nano/micro structure. Core-shell structures are considered ideal candidates for heterogeneous tandem catalysts due to their excellent capacity to balance the aforementioned three factors.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Liyong Du, Dongxue Wang, Kuikun Gu, Mingzhe Zhang
Summary: A facile method was employed to synthesize pure and PdO-loaded double-shell ZnSnO3 hollow microspheres, whose structure and morphology were characterized. The gas sensor based on PdO-loaded double-shell ZnSnO3 hollow microspheres exhibited excellent sensing performance towards n-propanol, with high response, rapid response and recovery speed, repeatability, and long-term stability, attributed to the unique double-shell structure and the catalytic and sensing effect of PdO.
INORGANIC CHEMISTRY FRONTIERS
(2021)
