Xianghan Cheng

Dezhou University

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i-10 index

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Co-Authors

Longlong Geng

Dezhou University

Xiangyu Sun

Northwest A&F University

Xiuling Zhang

Dezhou University

Panpan Wang

Zhengzhou University

F. Geng

Shandong University of Technology

Tingting Ma

West China Hospital of Sichuan University

Qianyi Chen

University of Tennessee at Knoxville

Yulin Fang

Northwest A&F University

Taiji Kou

Xinjiang Agricultural University

Da‐Shuai Zhang

Dezhou University

Cooperative Institutions

Northwest A&F University

Dezhou University

Chinese Academy of Sciences

State Forestry and Grassland Administration

Henan University of Science and Technology

Beijing Institute of Technology

Ministry of Agriculture and Rural Affairs

Shandong University of Technology

Peking University

University of Chinese Academy of Sciences

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Tailoring Perovskite/C₆₀ Interface by Reactive Passivators for Stable Tandem Solar Cells

Advanced Functional Materials (2024)

Fengtao Pei Qianqian Wang Zejun Wei Xinmeng Zhuang Xianghan Cheng

Abstract Integrating perovskite solar cells with crystalline silicon bottom cells in a monolithic two‐terminal tandem configuration enables power conversion efficiency (PCE) surpassing the theoretical limits of single‐junction cells. However, wide bandgap (WBG) perovskite films face challenges related to phase stability and open circuit voltage ( V OC ) deficit, particularly due to severe non‐radiative recombination at the perovskite/C 60 interface. Here, the interfacial defects are passivated by incorporating a reactive passivator that reacts with lead halides to form low‐dimensional phases. The target product obtained by optimizing the reaction temperature not only suppresses recombination across the interface, but also facilitates the transfer of charge carriers. More importantly, this product can suppress phase segregation of WBG perovskite films under exposure to light illumination and moisture. This strategy enables a high V OC of 1.25 V for WBG perovskite device based on polymer hole transport layer and a certified stabilized PCE of 30.52% for a monolithic perovskite/silicon tandem solar cell. The unencapsulated tandem device retains 94% of its initial PCE over 200 h under continuous 1‐sun full spectrum illumination in air, demonstrating the improved phase stability.

Tandem

10.1002/adfm.202410737

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Triggering efficient redox cycling and electron transporting in CuCo spinel oxides via oxygen vacancy building for rapid degradation of antibiotics

Chemical Engineering Journal (2024)

Longlong Geng F. Geng Xianghan Cheng Man Yang Xiaoli Wang

Degradation

Cycling

10.1016/j.cej.2024.156731

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Foliar Phenylalanine Application Promoted Antioxidant Activities in Cabernet Sauvignon by Regulating Phenolic Biosynthesis

Journal of Agricultural and Food Chemistry (2020)

Xianghan Cheng Xuefei Wang Ang Zhang Panpan Wang Qianyi Chen

The effects of foliar phenylalanine application during veraison (FPV) on phenolic biosynthesis and correlation between phenolic compositions and antioxidant activities in Cabernet Sauvignon grown in field and greenhouse were investigated. Solutions with 69 and 138 mg N/vine phenylalanine (Pe1 and Pe2, respectively) and an aqueous solution without nitrogen (CK) were sprayed three times during veraison. FPV significantly improved antioxidant activities in grapes using the two culture methods. The most contributory phenolic compositions to antioxidant activities were anthocyanins and stilbenes following FPV compared with CK. Phenylalanine metabolism, abscisic acid content, and expression levels of VvPAL, VvCHS, VvF3H, VvUFGT, and VvSTS in the phenolic synthesis pathway were increased from the first FPV to harvest. Although Pe2 significantly increased total phenolic contents than Pe1, antioxidant parameters were not markedly affected by the phenylalanine dose. Our finding revealed that FPV was a useful fertilization method to enhance antioxidant activities in grapes in nitrogen-deficient vineyards.

Veraison

10.1021/acs.jafc.0c05565

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Citations (29)

Author response for "Anchoring Co-Fe alloy nano-grains on carbon fibers by in-situ alloying strategy to boost the catalytic performance for rapid oxidative degradation of emerging contaminants"

Man Yang Xianghan Cheng F. Geng Wenyuan Han Ping Niu

Degradation

10.1039/d4ta08657k/v2/response1

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Long-term warming altered soil physical structure and soil organic carbon pools in wheatland field

Experimental Agriculture (2024)

Rentian Ma Taiji Kou Xianghan Cheng Yu Ning

Summary The impacts of long-term warming on soil physical structure and soil organic carbon (SOC) pools are currently disputed and uncertain. We conducted an eleven-year warming experiment in wheatland field in Henan, China. We found that long-term warming significantly increased soil bulk density by 4.5%, and significantly decreased total porosity and non-capillary porosity by 3.4% and 5.0%, respectively. Besides, long-term warming decreased the >2 mm fraction proportion and increased <0.053 mm fraction proportion of dry and wet aggregates. The mean weight diameter value for dry and wet aggregates in long-term warming treatment was significantly decreased by 7.0% and 6.7%, respectively. Moreover, long-term warming significantly decreased the total SOC, very labile pool (F1) and labile pool (F2) content by 10.6%, 30.6%, and 43.6%, and significantly increased the less labile pool (F3) and non-labile pool (F4) content by 94.2% and 21.1%, respectively. Long-term warming increased the passive carbon pool percentage but decreased the active carbon pool (ACP) percentage. Our results suggest that long-term warming negatively affected the soil's physical structure and impaired soil ACP accumulation. The findings of this study help improve our understanding of the response of farmland soils in northern China to climate change and provide scientific basis for establishing carbon management measures in farmland.

Soil carbon

10.1017/s0014479723000236

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Facing Heavy Metal Stress, What Are the Positive Responses of Melatonin in Plants: A Review

Agronomy (2024)

Xianghan Cheng Xiaolei Liu Feifei Liu Yuantong Yang Taiji Kou

With the growth of the population and the development of modern industry and the economy, the problem of heavy metal pollution in cultivated soil has become increasingly prominent. Moreover, heavy metal poses a serious threat to plant growth due to its characteristics of difficult degradation, high mobility, easy enrichment, and potential toxicity and has become a social topic. Melatonin is a new type of plant hormone widely present in animals, plants, fungi, and bacteria, and its biological role has begun investigated in the last dozen years. Facing heavy metal stress, melatonin can play a pleiotropic role in the physiological processes of plants, such as stress resistance and growth regulation, mitigate the damage caused by stress on plants, and provide a new research idea for alleviating heavy metal stress in plants. From the aspects of the plant phenotype, physiology, element absorption, and molecular structure, this paper, therefore, mainly reviews the effects of melatonin on plants subjected to heavy metal stress and the mechanism of melatonin alleviating heavy metal stress and then puts forward future research directions. This information may be of great significance to the normal growth of crops under heavy metal stress and will provide an important theoretical basis for the genetic improvement of crop resistance in the future.

Environmental stress

Environmental Pollution

10.3390/agronomy14092094

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Foliar nitrogen application from veraison to preharvest improved flavonoids, fatty acids and aliphatic volatiles composition in grapes and wines

Food Research International (2020)

Xianghan Cheng Tingting Ma Panpan Wang Yanying Liang Junxiang Zhang

Veraison

Preharvest

Flavonols

10.1016/j.foodres.2020.109566

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Citations (33)

Unveiling the Formation Mechanism for Binary Semiconductor Nanoclusters: a Two-Step Pathway to a Double-Shell Structured Copper Sulfide Nanocluster

ACS Nano (2024)

Yuhao Jin Zhenyi Zhang Huijuan Zheng Xianghan Cheng Longlong Geng

This work represents an important step in the quest to unveil the formation mechanism of atomically precise binary semiconductor nanoclusters. In this study, we develop an acid-assisted C–S bond cleavage approach, wherein the C–S bonds in the metal thiolate precursor can be readily cleaved to release S2– with the assistance of a suitable acid in the presence of Cu2O as the catalyst. This process spontaneously fosters the formation of a [−Cu–S–Cu−] framework and promotes the structural growth into a high nuclearity assembly. Specifically, by employing Cu(I) tert-butyl thiolate ([CuStBu]∞) and carboxylate acid CH2═CHCOOH as the copper/sulfur precursor and C–S bond "scissor", a high-nuclearity nanocluster [S–Cu56] (Cu56S12(OOCCH═CH2)12(SC(CH3)3)20) featuring a double-shell configuration has been effectively prepared in high yield. Importantly, the [CuStBu]∞ precursor and the intermediate [S–Cu14] (Cu14(StBu)8(OOCCH═CH2)6) cluster have also been successfully isolated and structurally characterized, which ultimately enables the establishment of a two-step formation pathway for the [S–Cu56] nanocluster. Furthermore, in contrast to conventional reduction synthetic routes for metal nanoclusters containing Cu(0) or Cu(I), the acid-assisted C–S bond cleavage approach represents an oxidation process with respect to the constituent metals, yielding highly charged Cu(II) cations in the copper sulfide nanocluster.

Nanoclusters

Bond cleavage

Cleavage (geology)

Copper sulfide

10.1021/acsnano.4c13264

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Anchoring Co-Fe alloy nano-grains on carbon fibers by in-situ alloying strategy to boost the catalytic performance for rapid oxidative degradation of emerging contaminants

Journal of Materials Chemistry A (2024)

Man Yang Xianghan Cheng F. Geng Wenyuan Han Ping Niu

Advanced oxidation is regarded as the most promising pathways for the purification of hard-to-degrade contaminants. In this study, novel CoFe alloy-decorated carbon nanofibers (CoFe/CF) were constructed utilizing an alloy engineering...

Degradation

Carbon fibers

10.1039/d4ta08657k

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Reduction of methoxypyrazines with ‘vegetable-like’ odors in grapes by foliar nitrogen application

Scientia Horticulturae (2022)

Xianghan Cheng Panpan Wang Xiaolei Zhang Tingting Ma Rui Wang

Veraison

Vineyard

Isoleucine

10.1016/j.scienta.2022.111106

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Citations (3)