Article
Nanoscience & Nanotechnology
Canjun Liu, Jian Zuo, Jie Zhang, Yong Pei, Shu Chen
Summary: Constructing heterojunction is an effective strategy to promote charge separation, but the contribution of crystal facet orientation (CFO) at the heterojunction interface remains unclear. In this study, by adjusting the CdS CFO, three types of TiO2/CdS heterojunction films with different CFOs were produced. The TiO2/CdS film with a mixed CdS CFO showed the highest photocurrent density and charge separation efficiency, while the film with a uniform CdS (100) performed the worst. The different electron transport times of these films are attributed to the varying Fermi levels of CdS CFO and the formation of different built-in electric fields when coupled with TiO2.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Le Wang, Prajwal Adiga, Jiali Zhao, Widitha S. Samarakoon, Kelsey A. Stoerzinger, Steven R. Spurgeon, Bethany E. Matthews, Mark E. Bowden, Peter Sushko, Tiffany C. Kaspar, George E. Sterbinsky, Steve M. Heald, Han Wang, Linda W. Wangoh, Jinpeng Wu, Er-Jia Guo, Haijie Qian, Jiaou Wang, Tamas Varga, Suntharampillai Thevuthasan, Zhenxing Feng, Wanli Yang, Yingge Du, Scott A. Chambers
Summary: Fe substitution in LaNi1-xFexO3 tunes the Ni oxidation state, leading to a volcano-like OER trend with x = 0.375 as the most active. High-valent Fe3+δ cationic species enhance TM 3d bandwidth and TM 3d-O 2p hybridization, boosting the OER activity. These findings deepen our understanding of structural and electronic contributions to enhanced OER activity in perovskite oxides.
Article
Materials Science, Multidisciplinary
Tongyu Han, Haifeng Shi, Yigang Chen
Summary: In this study, a novel S-scheme system was built by combining CuO with BiVO4 to activate PMS for antibiotic degradation. The system exhibited excellent visible light absorption performance and remarkable charge separation ability, suggesting its potential application in enhancing PMS activation and purifying antibiotics in water.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Multidisciplinary
Xiaoyu He, Yujia Ding, Zhennan Huang, Min Liu, Miaofang Chi, Zili Wu, Carlo U. Segre, Chunshan Song, Xiang Wang, Xinwen Guo
Summary: A photocatalyst TiO2/Ti-BPDC-Pt with a self-grown TiO2/Ti-MOF heterojunction, selectively anchored high-density Pt single-atomic cocatalysts on Ti-BPDC, achieves photocatalytic hydrogen evolution. The intimate heterojunction efficiently separates electrons and holes in a direct Z-scheme, and Pt is selectively anchored on Ti-BPDC in the form of single atoms. The tailored TiO2/Ti-BPDC-Pt exhibits significantly enhanced activity compared to other TiO2- or MOF-based catalysts, showing the importance of the balance of two simultaneously exposed domains of heterojunctions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Yuzhu Pan, Xin Wang, Yuhan Liao, Yubing Xu, Yuwei Li, Qing Li, Xiaobing Zhang, Jing Chen, Zhuoya Zhu, Zhiwei Zhao, Elias Emeka Elemike, Mamoru Furuta, Wei Lei
Summary: This study presents a simple strategy for designing low-cost and high-performance filter-free narrowband photodetectors using perovskite single-crystalline heterojunctions. The photodetectors show a continuously tunable spectral response range from blue to near infrared regions with ultra-narrow full width at half-maximum (<20 nm). Additionally, the photodetectors exhibit high charge collection efficiency under a large electric field, fast response speed, and long-term stability in ambient air.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yan Liang, Zhongke Xiang, Xiaojian Zhao, Peipei Yan, Li Xue, Lisheng Gu, Yongdong Long, Ting Yu, Yong Yang
Summary: This study focuses on the crystal facet design of a NiCo2O4/Fe2O3 p-n heterojunction for gas sensing applications. The results show that the heterojunction exhibits superior sensing properties compared to pristine NiCo2O4 and Fe2O3 materials. Theoretical calculations suggest that the electronic coupling effect in the heterojunction enhances the interaction between the heterojunction and the target gas, leading to improved gas sensing performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Jian Yu, Chao Chen, Qinghua Zhang, Jie Lin, Xiuyi Yang, Lin Gu, Hui Zhang, Zhi Liu, Yu Wang, Shuo Zhang, Xiaotian Wang, Lin Guo
Summary: This study discovered a single-atom enhanced Raman scattering (SAERS) effect based on noble metal single atoms anchored on amorphous C3N4 nanosheets. The SAERS effect exhibited excellent spectral stability and reproducibility, making it promising for applications in the field of enhanced Raman spectroscopy.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Fei Liu, Gang Ding, Zhuo Zheng, Zoufei Du, Jueying Sun, Long Yang, Yi Dan, Yun Huang, Long Jiang
Summary: The study synthesized flower-like perylenetetracarboxylic-Zn(II) superstructures with Zn2+ ions and constructed a step-scheme heterojunction with Bi2WO6. This heterojunction significantly improved the photocatalytic efficiency for tetracycline degradation compared with pure Zn-PTC and Bi2WO6. The step-scheme charge transfer pathway effectively inhibited the recombination of photo-generated charges and utilized the different oxidation and reduction abilities of Zn-PTC and Bi2WO6.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Peng Gao, Shaojiang Huang, Kang Tao, Zexin Li, Li Feng, Yongze Liu, Liqiu Zhang
Summary: This study reports an adjustable {312}/{004} facet heterojunction MWCNTs/Bi5O7I nanocomposite, which exhibits superior photocatalytic oxidation efficiency by accelerating the transport of spatial charge carriers. This work provides novel insights into the relationship between charge carrier transport and facet structure-property.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Yuwei Luo, Lengyuan Niu, Yifan Wang, Peipei Wen, Yinyan Gong, Can Li, Shiqing Xu
Summary: Cu2O films with (100) and (111) facets were fabricated by adjusting the pH value of the electrolyte. Cu2O(100) exhibited higher SERS activity and lower detection limit compared to Cu2O(111). (100) facet possessed lower electron work function and better adsorption ability for 4-NBT, resulting in efficient interfacial charge transfer and enhanced SERS activity.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
He Li, Cheng Lin, Yilong Yang, Chaoran Dong, Yulin Min, Xiaoqin Shi, Luyang Wang, Siyu Lu, Kan Zhang
Summary: By using inter-facet edge (IFE) rich WO3 arrays in an electrolyte containing CO32-, reactive oxygen species (ROS), H2O2, and OH. are efficiently generated by water oxidation with total Faraday efficiencies of more than 90%. The IFE favors the adsorption of CO32- and reduces the adsorption energy of OH., while suppressing surface hole accumulation. In situ selective oxidation of benzyl alcohol using the formed OH. achieves a benzaldehyde production rate of approximately 768 μmolh(-1) with near 100% selectivity. This work provides a promising approach to enhance the efficiency and value-added product of oxidation reactions in aqueous solar fuel systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Jian Yang, Qiangke Wang, Xuefeng Luo, Chuang Han, Yujun Liang, Gui Yang, Xiaorui Zhang, Zikang Zeng, Guangzhao Wang
Summary: A p-n oriented heterostructure with S-O chemically bonded interface is fabricated, which enables the spatially separated photocarrier transfer and improves the photocatalytic activity for contaminant removal under visible-light irradiation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Mi Gyoung Lee, Jin Wook Yang, Hoonkee Park, Cheon Woo Moon, Dinsefa M. Andoshe, Jongseong Park, Chang-Ki Moon, Tae Hyung Lee, Kyoung Soon Choi, Woo Seok Cheon, Jang-Joo Kim, Ho Won Jang
Summary: In this study, a crystal facet engineering approach was used to control the band structures of titanium dioxide nanostructures as hole blocking layers for bismuth vanadate. The results showed that the BiVO4/TiO2 heterostructure with nanoflowers exhibited significantly higher photocurrent density compared to nanorods. The enhancement was attributed to reduced charge recombination due to the formation of type II band alignment between BiVO4 nanodots and TiO2 nanoflowers. This work not only provides new insights into the interplay between crystal facets and band structures but also advances the design of highly efficient photoelectrodes.
NANO-MICRO LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Tao Li, Bin Li, Haoxiang Zhou, Jun Wang, Gang Ni, Wanli Ma, Chuanxiang Sheng, Jianyu Yuan, Haibin Zhao
Summary: This study reports on the ultrafast dynamics of charge transfer and exciton dissociation in single-material organic solar cells for the first time. It is found that the intramolecular interface in the block copolymer has a higher transfer rate, and the dilute PBDB-T-b-PTY6 film has faster exciton dissociation. By optimizing ordering, the power conversion efficiency of organic solar cells can be improved.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Huide Wang, Yonghong Zeng, FanXu Meng, Rui Cao, Yi Liu, Zhinan Guo, Tingting Wang, Haiguo Hu, Sidi Fan, Yatao Yang, S. Wageh, Omar A. Al-Hartomy, Abul Kalam, Yonghong Shao, Yu-Jia Zeng, Dianyuan Fan, Han Zhang
Summary: A black phosphorus/rhodamine 6G/molybdenum disulfide (BP/R6G/MoS2) photodiode with high responsivity has been achieved by utilizing interfacial charge transfer of R6G molecules between heterojunction layers. The formed vdWs interface efficiently separates the additional photogenerated electrons and holes generated by R6G molecules, resulting in high-performance photoresponse. By sensitizing the devices with the dye molecule R6G, enhanced photodetection performance is obtained without sacrificing the photoresponse speed, with R increasing by 14.8-20.4 times and specific detectivity (D*) increasing by 24.9-34.4 times. The proposed strategy of interlayer assembly of dye molecules may pave a new way for high-performance photodetection based on 2D vdWs heterojunctions with high responsivity and fast response speed.
Article
Engineering, Environmental
Zihao Cui, Yaqiang Wu, Shuhui Zhang, Hui Fu, Guoqiang Chen, Zaizhu Lou, Xiaolei Liu, Qianqian Zhang, Zeyan Wang, Zhaoke Zheng, Hefeng Cheng, Yuanyuan Liu, Ying Dai, Baibiao Huang, Peng Wang
Summary: In this study, a new lead-free perovskite solid solution Cs-3(BixSb1-x)(2)Br-9 with tunable band gap was prepared through a facile and efficient co-precipitation method. The introduction of Sb atoms in Cs3Bi2Br9 significantly broadened the absorption of visible light, making it a promising visible-light photocatalyst. The CBSB solid solution also exhibited excellent stability, showing no apparent decrease in catalytic activity in a five-cycle experiment. This research provides new insights into improving the carrier lifetime of lead-free perovskite materials, presents a new approach for selective photo-oxidation, and may have implications for other solar energy conversion areas related to halide perovskites.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Difei Xiao, Xiaolei Bao, Minghui Zhang, Zaiqi Li, Zeyan Wang, Yugang Gao, Zhaoke Zheng, Peng Wang, Hefeng Cheng, Yuanyuan Liu, Ying Dai, Baibiao Huang
Summary: This study successfully stabilized Cu+ and *CO intermediates and improved the production efficiency of C2H4 during CO2RR by designing and synthesizing the Pd-Cu2O catalyst.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yayang Xu, Shiqiang Yu, Fengxia Tong, Zeyan Wang, Peng Wang, Yuanyuan Liu, Hefeng Cheng, Yuchen Fan, Wei Wei, Ying Dai, Zhaoke Zheng, Baibiao Huang
Summary: The coupling of W18O49 and Au in W18O49-Au heterostructures enhanced the light absorption and carrier separation ability of this dual-plasmonic system, leading to highly enhanced performance for nitrophenol hydrogenation. The rate constant of W18O49-Au reached 0.2044 min(-1), which was 12 and 102 times higher than that of Au and W18O49, respectively. The hot electron injection process from W18O49 to Au, demonstrated by single-particle photoluminescence (PL) spectroscopy, was found to be beneficial for boosting the catalytic performance.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Longfei Lei, Yuanyuan Liu, Yujia Zhang, Caiyun Zhang, Yujie Li, Zeyan Wang, Peng Wang, Zhaoke Zheng, Hefeng Cheng, Ying Dai, Baibiao Huang
Summary: A new method to extend the light absorption and improve the photocatalytic activity of metal-organic frameworks (MOFs) with nitrogen-containing ligand is reported in this study, involving the protonation of nitrogen. The protonation of nitrogen in the thiazolyl ring in the MOFs was found to lead to a wider visible light absorption as well as improved charge separation and transfer, resulting in enhanced photocatalytic activity. This work provides a new idea for the design of nitrogen-containing Bi-based MOFs with enhanced photocatalytic performance.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yujia Zhang, Yan Liu, Ting Zhang, Xueqin Gong, Zeyan Wang, Yuanyuan Liu, Peng Wang, Hefeng Cheng, Ying Dai, Baibiao Huang, Zhaoke Zheng
Summary: A single-particle spectroscopy technique is used to quantitatively monitor the spatial distribution of oxygen vacancies (OVs) on different facets. Taking monoclinic BiVO4 as an example, by tracking the photoluminescence (PL) lifetimes and spectra of different facets before and after hydrogen treatment, we confirm that the PL emission originates from the OV state and determine that OVs are more likely to be generated on the {010} facets. This anisotropic defect engineering significantly prolongs the carrier lifetime and accelerates the activation of molecular oxygen.
Article
Chemistry, Physical
Yuyin Mao, Minghui Zhang, Shenghe Si, Guangyao Zhai, Xiaolei Bao, Kepeng Song, Lirong Zheng, Yuanyuan Liu, Zeyan Wang, Zhaoke Zheng, Peng Wang, Ying Dai, Hefeng Cheng, Baibiao Huang
Summary: In this study, two different nickel single-atom catalysts (Ni-SACs) were constructed on WO2.72 nanowires, including bulk doping of single Ni atoms in WO2.72 (B-Ni-1/WO2.72) and surface anchoring of single Ni atoms on WO2.72 (S-Ni-1/WO2.72), to explore the electronic structure manipulation for enhancing CO2 photoreduction. The results showed that B-Ni-1/WO2.72 exhibited superior photocatalytic performance compared to S-Ni-1/WO2.72, achieving a CO yield of 80.5 mmol g(-1) h(-1) with a selectivity of 98.7%. This study provides valuable insights into the optimization of site-related electronic structures for efficient single-atom catalysts in artificial photosynthesis.
Article
Chemistry, Physical
Fahao Ma, Zaiqi Li, Riming Hu, Zengqi Wang, Junpeng Wang, Jinkai Li, Yong Nie, Zhaoke Zheng, Xuchuan Jiang
Summary: This study presents a waste-treating-waste strategy that converts PET plastic and CO2 wastes into formic acid. Engineered electrocatalysts enable high selectivity of formic acid at ultralow potentials. Experimental and theoretical results reveal the significant effects of oxygen vacancies and interface electron transfer on catalytic performance.
Article
Chemistry, Inorganic & Nuclear
Zhaoqi Wang, Shuhua Wang, Xiaolei Liu, Yayang Xu, Dujuan Dai, Shuang Zhao, Peng Wang, Zhaoke Zheng, Yuanyuan Liu, Hefeng Cheng, Ying Dai, Zeyan Wang, Baibiao Huang
Summary: Recently, a highly active BiVO4-tartaric acid (C4H6O6) PEC fuel cell with efficient charge and energy transfer paths has been investigated. The complexation mechanism between BiVO4 and C4H6O6 is explored through theoretical calculations and experiments. The optimal metal complexation site of C4H6O6 is found to be crucial for enhancing the PEC performance, leading to improved photoelectric conversion and energy release. The research also suggests that other materials with similar complexation sites and energy band configurations can achieve enhanced PEC activity. This work provides an in-depth understanding of the complexation mechanism in C4H6O6-based PEC fuel cell and has potential for inspiring the design of efficient PEC fuel cells.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Lingtong Lin, Danning Xing, Caiyun Zhang, Yuanyuan Liu, Zeyan Wang, Peng Wang, Zhaoke Zheng, Hefeng Cheng, Ying Dai, Baibiao Huang
Summary: Alpha-Fe2O3 is a promising photocatalytic material with low cost and excellent visible light absorption, but its efficiency is limited by charge recombination. This study introduces Ga in the form of Fe2-xGaxO3 solid solution to improve the electronic structure and photoelectrical activity. The introduction of Ga reverses the electron spin state, suppressing carrier recombination. Experimental results support the theoretical calculations, and Fe1.96Ga0.04O3 shows the best photothermal activity for CO2 reduction, with a CO evolution rate 2.4 times higher than pure Fe2O3. This work provides an alternative approach to enhance the activity of alpha-Fe2O3.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Xuesen Qin, Huiliang Li, Zeyan Wang, Zhaoke Zheng, Peng Wang, Hefeng Cheng, Yuanyuan Liu, Yuchen Fan, Ying Dai, Baibiao Huang
Summary: Metal nitrides are usually prepared by high temperature nitridation with metal oxide precursors under an NH3 atmosphere. However, the preparation of oriented nitride nanostructures is challenging due to the differences in crystal structures between oxide precursors and nitride products. This work systematically investigates the endotaxial growth process of TaON from a LiTaO3 single crystal substrate and proposes a plausible growth mechanism. It contributes to a better understanding of the unique endotaxial growth process and facilitates the fabrication of other oriented nitride nanostructures.