Science BulletinPub Date : 2026-10-30Epub Date: 2026-08-24DOI: 10.1016/j.scib.2026.08.053
Zhenbei Yang, Zhe Wang, Han Liu, Xiaoyan Jin, Qitong Ye, Zhe Lu, Ruojie Xu, Beibei Yu, Yifan Zhang, Kexin Kong, Yipu Liu, Seong-Ju Hwang, Zhijuan Pan, Liang Li
{"title":"Precise engineering of bimetallic sites via molecular coordination strategy for enhanced bifunctional oxygen electrocatalysis","authors":"Zhenbei Yang, Zhe Wang, Han Liu, Xiaoyan Jin, Qitong Ye, Zhe Lu, Ruojie Xu, Beibei Yu, Yifan Zhang, Kexin Kong, Yipu Liu, Seong-Ju Hwang, Zhijuan Pan, Liang Li","doi":"10.1016/j.scib.2026.08.053","DOIUrl":"10.1016/j.scib.2026.08.053","url":null,"abstract":"<div><div>Dual-atom catalysts show great promise for catalyzing both the oxygen reduction and evolution reactions (ORR and OER). However, the controllable synthesis and precise engineering of their atomic configurations remain challenging. Here, we develop Ni-Fe bimetallic sites with tunable local atomic structure, ranging from isolated FeN<sub>4</sub>/NiN<sub>4</sub> dual-atom sites, to a Fe<sub>4</sub> nanocluster-decorated FeN<sub>4</sub>/NiN<sub>4</sub> heterostructure (FeN<sub>4</sub>-Fe<sub>4</sub>-NiN<sub>4</sub>), and finally to NiFe alloy nanoparticles, via a dicyandiamide-mediated coordination strategy. The coordination behavior between organic molecules and metal precursors precisely modulates the dispersion of iron and nickel species and their local structure on the porous carbon fiber network. The unique FeN<sub>4</sub>-Fe<sub>4</sub>-NiN<sub>4</sub> catalyst exhibits remarkable ORR and OER performance, significantly surpassing those of FeN<sub>4</sub>/NiN<sub>4</sub>, NiFe alloy, and benchmarks Pt/C and RuO<sub>2</sub>. Spectroscopic characterizations combined with density functional theory calculations suggest that Fe<sub>4</sub> nanoclusters modulate the local coordination/electronic environment of neighboring FeN<sub>4</sub>/NiN<sub>4</sub> sites, optimize *O/*OH adsorption at the rate-determining steps, and thereby accelerate both ORR and OER kinetics. Moreover, a zinc-air battery equipped with FeN<sub>4</sub>-Fe<sub>4</sub>-NiN<sub>4</sub> as the cathode catalyst demonstrates exceptional cycling stability for over 3300 h. This work offers a general molecular coordination strategy for the precise engineering of local atomic structure in multi-metal catalysts.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"71 20","pages":"Pages 5226-5237"},"PeriodicalIF":20.7,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hydrolysis gaming chemistry to regulate TiO2 deposition for high-performance perovskite solar cells","authors":"Gaofeng Li, Yongzhe Li, Zhenyu Shi, Chi Zhang, Hongjie Lei, Zijie Yi, Youhan Lin, Xinyue Zhang, Qixian Zhang, Huicong Liu, Weiping Li, Wei Ma, Zhike Liu, Haining Chen","doi":"10.1016/j.scib.2026.09.040","DOIUrl":"10.1016/j.scib.2026.09.040","url":null,"abstract":"<div>A hydrolysis gaming chemistry strategy is developed to tame the violent TiCl<sub>4</sub> hydrolysis by systematically tuning solvent nucleophilicity. This mild, controlled deposition process yields compact, oxygen-vacancy-suppressed TiO<sub>2</sub> films with reduced work function and optimized energy level alignment, enabling planar perovskite solar cells with a record efficiency of 26.15% and outstanding operational stability.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (154KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"71 20","pages":"Pages 5159-5163"},"PeriodicalIF":20.7,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149079425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Science BulletinPub Date : 2026-10-30Epub Date: 2026-09-11DOI: 10.1016/j.scib.2026.09.034
Zhen Hao, Feng Ling, Junguo Liu, Giles Foody, Jinwei Dong, Xin Li, Xiaobin Cai, Hong Chi, Lihui Wang, Yun Du, Xue Yan, Yong Ge
{"title":"Satellite imagery reveals rapid expansion of human-regulated reservoirs globally","authors":"Zhen Hao, Feng Ling, Junguo Liu, Giles Foody, Jinwei Dong, Xin Li, Xiaobin Cai, Hong Chi, Lihui Wang, Yun Du, Xue Yan, Yong Ge","doi":"10.1016/j.scib.2026.09.034","DOIUrl":"10.1016/j.scib.2026.09.034","url":null,"abstract":"<div><div>Human-regulated reservoirs play a crucial role in water resource management, yet their global distribution and expansion remain poorly understood. Utilizing satellite imagery, we conducted a comprehensive analysis of reservoir dynamics from 2000 to 2018. We identified 425,023 (419,982 in 2018, 387,823 in 2000) on-channel reservoirs ≥0.01 km<sup>2</sup>. We found small reservoirs (<0.1 km<sup>2</sup>) expanded rapidly (8.1% increase in area), while large reservoirs remained relatively stable. This expansion, primarily driven by anthropogenic factors rather than climatic variability, led to a net increase in global reservoir capacity, particularly in Asia. While most reservoirs remained stable, distinct hotspots of construction and disappearance were observed. We highlight the impact of reservoir expansion on hydrological regimes. River flow regulation has intensified, particularly in headwater streams, a phenomenon largely underestimated in previous assessments. We suggest that continued reservoir construction may have complex implications for water availability and ecosystem health. Our findings provide critical insights into the global distribution and growth of human-regulated reservoirs, informing future water resource planning and policy-making.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"71 20","pages":"Pages 5281-5290"},"PeriodicalIF":20.7,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149079362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Science BulletinPub Date : 2026-10-30Epub Date: 2026-09-08DOI: 10.1016/j.scib.2026.09.015
Yang Li, Xiwen Song, Di Wu, Xiu Chen, Yi Su, Yuzhe Liu, Yifei Tan, Tao Huang, Jianmin Ma, Qing Li
{"title":"Unequal gains from China’s Clean Air Actions: widening urban-rural disparity in PM2.5 exposure","authors":"Yang Li, Xiwen Song, Di Wu, Xiu Chen, Yi Su, Yuzhe Liu, Yifei Tan, Tao Huang, Jianmin Ma, Qing Li","doi":"10.1016/j.scib.2026.09.015","DOIUrl":"10.1016/j.scib.2026.09.015","url":null,"abstract":"<div><div>Urban-rural disparity in fine particulate matter (PM<sub>2.5</sub>) exposure undermines health equity, yet the trends in long-term exposure remain unclear. Here, we systematically quantify income-stratified PM<sub>2.5</sub> exposure across urban and rural populations in China from 2005 to 2019, integrating field-measured source-specific toxicity profiles with modeled PM<sub>2.5</sub> exposure. Paradoxically, the urban-rural PM<sub>2.5</sub> exposure disparity broadened by 55.6%, despite drastic reductions in PM<sub>2.5</sub> mass during China’s Clean Air Actions (2013–2019). Rural residents experienced 3.2-fold higher PM<sub>2.5</sub> exposure than urban residents across the Chinese mainland in 2019. After accounting for source-specific toxicity, this ratio increased to 15.0-fold, primarily due to residential burning (>85.2%). Scenario analysis indicates that a 20% reduction in residential emissions could achieve 88.9% inequality mitigation in developed regions, compared to a more limited effect from a 60% cut in low-income areas. More focus on low-income rural households during the clean energy transition is recommended to advance health-equitable air policies and achieve broader social welfare.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"71 20","pages":"Pages 5291-5301"},"PeriodicalIF":20.7,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149056674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}