Chemical Scissors Tailored Nano-Tellurium with High-Entropy Morphology for Efficient Foam-Hydrogel-Based Solar Photothermal EvaporatorsOACSTPCD
Chemical Scissors Tailored Nano-Tellurium with High-Entropy Morphology for Efficient Foam-Hydrogel-Based Solar Photothermal Evaporators
The development of tellurium(Te)-based semiconductor nanomaterials for efficient light-to-heat conversion may offer an effective means of harvesting sunlight to address global energy concerns.However,the nanosized Te(nano-Te)materials reported to date suffer from a series of drawbacks,including limited light absorp-tion and a lack of surface structures.Herein,we report the preparation of nano-Te by electrochemical exfoliation using an electrolyzable room-temperature ionic liquid.Anions,cations,and their corresponding electrolytic prod-ucts acting as chemical scissors can precisely intercalate and functionalize bulk Te.The resulting nano-Te has high morphological entropy,rich surface functional groups,and broad light absorption.We also constructed foam hydrogels based on poly(vinyl alcohol)/nano-Te,which achieved an evaporation rate and energy efficiency of 4.11 kg m-2 h-1 and 128％,respectively,under 1 sun irradiation.Furthermore,the evaporation rate was maintained in the range 2.5-3.0 kg m-2 h-1 outdoors under 0.5-1.0 sun,providing highly efficient evaporation under low light conditions.
Chenyang Xing;Zihao Li;Ziao Wang;Shaohui Zhang;Zhongjian Xie;Xi Zhu;Zhengchun Peng
State Key Laboratory of Radio FrequencyHeterogeneous Integration,Shenzhen University,Shenzhen 518060,People's Republic of China||Center for Stretchable Electronics and NanoSensors,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,People's Republic of ChinaSchool of Science and Engineering,The Chinese University of Hong Kong,Shenzhen,Shenzhen 518172,People's Republic of ChinaInternational Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education,Institute of Microscale Optoelectronics,Shenzhen University,Shenzhen 518060,People's Republic of ChinaInstitute of Pediatrics,Shenzhen Children's Hospital,Shenzhen 518038,Guangdong,People's Republic of China
TelluriumHigh entropyElectrochemical modificationSolar absorptionEvaporation rate
《纳微快报（英文）》 2024 (003)
149-168 / 20
The authors thank Mr.Yu Zhang at the Instrumental Analysis Center of Shenzhen University for assis-tance with the TEM analyses and gratefully acknowledge the Materials and Devices Testing Center of the Graduate School at Shenzhen,Tsinghua University in Shenzhen.This work was supported in part by the Science and Technology Innovation Council of Shenzhen(Grant Nos.JCYJ20200109105212568,KQTD20170810105439418,JCYJ20200109114237902,20200812203318002,and 20200810103814002),the National Nat-ural Science Foundation of China(Grant No.12274197),and the Guangdong Basic and Applied Basic Research Foundation(Grant Nos.2023A1515030240,2019A1515010790,2021A0505110015).
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